Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 113
Filter
1.
Ciênc. cuid. saúde ; 21: e57088, 2022. tab
Article in Portuguese | LILACS, BDENF | ID: biblio-1384520

ABSTRACT

RESUMO Objetivo: descrever o perfil dos pacientes com crise hipertensiva atendidos em uma Unidade de Pronto Atendimento. Método: estudo transversal descritivo, realizado por meio da análise de 80 prontuários de pacientes com quadro de crise hipertensiva, atendidos em uma unidade de pronto atendimento, entre o período de março de 2018 a fevereiro de 2019. Os dados foram coletados por meio de roteiro estruturado e receberam tratamento estatístico descritivo. Resultados: Após a análise dos 80 prontuários, constatou-se que a média de idade entre os pacientes atendidos foi de 58,03, sendo a faixa etária adulta a mais prevalente (53,8%). Constatou-se que a média da pressão arterial sistólica foi significativamente maior em homens em relação às mulheres (p=0,013). Quanto à sintomatologia, a cefaleia foi a mais prevalente, com 35,0%. Verificou-se que durante o atendimento da crise hipertensiva, a maioria dos pacientes fez uso de apenas uma droga para redução da PA, sendo o inibidor adrenérgico de ação central o mais citado. Quanto ao desfecho, grande parte dos pacientes recebeu alta (93,8%) logo após o atendimento, porém, 6,3% permaneceram em internamento de curta permanência até a estabilização do quadro. Considerações finais: Este estudo possibilitou a caracterização da população com crise hipertensiva atendida em um pronto atendimento, a qual evidencia uma possível fragilidade existente entre a articulação dos níveis de atenção à saúde.


RESUMEN Objetivo: describir el perfil de los pacientes con crisis hipertensiva atendidos en una Unidad de Pronta Atención. Método: estudio transversal descriptivo, realizado por medio del análisis de 80 registros médicos de pacientes con cuadro de crisis hipertensiva, atendidos en una unidad de pronta atención, entre el período de marzo de 2018 a febrero de 2019. Los datos fueron recogidos por medio de guion estructurado y recibieron tratamiento estadístico descriptivo. Resultados: después del análisis de los 80 registros médicos, se constató que el promedio de edad entre los pacientes atendidos fue de 58,03, siendo la franja etaria adulta la más prevalente (53,8%). Se constató que el promedio de la presión arterial sistólica fue significativamente mayor en hombres que en las mujeres (p=0,013). En cuanto a la sintomatología, la cefalea fue la más prevalente, con 35,0%. Se verificó que, durante la atención de la crisis hipertensiva, la mayoría de los pacientes hizo uso de solo una droga para reducción de la PA, siendo el inhibidor adrenérgico de acción central el más relatado. Respecto al resultado, gran parte de los pacientes recibió el alta (93,8%) inmediatamente después de la atención, sin embargo, el 6,3% permaneció en internamiento de corta estancia hasta la estabilización del cuadro. Consideraciones finales: este estudio posibilitó la caracterización de la población con crisis hipertensiva atendida en una pronta atención, la cual evidencia una posible fragilidad existente entre la articulación de los niveles de atención a la salud.


ABSTRACT Objective: to describe the profile of patients with hypertensive crisis treated at an Emergency Care Unit. Method: descriptive cross-sectional study carried out through the analysis of 80 medical records of patients with hypertensive crisis, treated at an emergency care unit, between March 2018 and February 2019. Data were collected using a structured script and were subjected to descriptive statistical treatment. Results: after analyzing the 80 medical records, it was found that the mean age of the treated patients was 58.03, with the adult age group being the most prevalent (53.8%). It was found that the mean systolic blood pressure was significantly higher in men than in women (p=0.013). As for symptoms, headache was the most prevalent, with 35.0%. It was found that during the treatment of the hypertensive crisis, most patients used only one drug to reduce BP, with centrally acting antiadrenergic drugs being the most cited. Regarding the outcome, most of the patients were discharged (93.8%) soon after treatment; however, 6.3% remained in short-term hospitalization until their condition stabilized. Final considerations: this study made it possible to characterize the population with hypertensive crisis treated in an emergency room, showing a possible fragility in the articulation between health care levell


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Patients/psychology , Health Profile , Emergency Medical Services/statistics & numerical data , Emergency Service, Hospital/statistics & numerical data , Hypertension/diagnosis , Hypertension/drug therapy , Medical Records/statistics & numerical data , Cross-Sectional Studies/methods , Nursing/statistics & numerical data , Delivery of Health Care/statistics & numerical data , Emergency Service, Hospital/standards , Arterial Pressure , Arterial Pressure/drug effects , Clinical Study , Hospitals, Packaged/statistics & numerical data , Hypertension/nursing , Hypertension/epidemiology
2.
Rev. bras. med. esporte ; 27(2): 147-150, Apr.-June 2021. tab, graf
Article in English | LILACS | ID: biblio-1280062

ABSTRACT

ABSTRACT Introduction: The indiscriminate use of androgenic steroids may have deleterious effects on human tissue. Objectives: Evaluate the effects of chronic administration of the steroid nandrolone decanoate (DECA) on autonomic cardiovascular modulation, kidney morphometry and the association between these variables in Wistar rats subjected to physical training with swimming. Methods: Thirty-two male Wistar rats aged 20 weeks were distributed among four experimental groups according to the training received: sedentary control (SC), sedentary treated with DECA (SD), trained control (TC) and trained treated with DECA (TD). The hemodynamic parameters, including blood pressure and variations in systolic blood pressure (SBPV) and diastolic blood pressure (DBPV), and kidney morphometry were evaluated. The level of significance adopted was 5%. Results: The SD group had higher baseline SBP and DBP values when compared to the SC, TC and TD groups, which were similar to each other. The rats in the SD group had higher systolic blood pressure (SBPV) and diastolic blood pressure (DBPV) variation values and higher absolute and normalized values in the LF band of the DBPV when compared to the animals in the SC, TC and TD groups. The animals in the SD group had a significantly higher rate of kidney fibrosis compared to the SC, TC and TD groups. There were no significant differences between the sympathetic modulation of SBPV through the LF component and kidney fibrosis. Conclusions: Physical training with swimming was effective in preventing the increase in blood pressure levels and lowering the occurrence of kidney fibrosis in animals treated with anabolic steroids. Level of Evidence IV; Series of cases .


RESUMEN Introducción: El uso indiscriminado de esteroides androgénicos puede tener consecuencias nocivas para el organismo. Objetivo: Evaluar los efectos de la administración crónica del esteroide decanoato de nandrolona (DECA) en ratones Wistar sometidos a entrenamiento físico con natación, sobre la modulación autonómica cardiovascular, morfometría renal y asociación entre esas variables. Métodos: Fueron utilizados 32 ratones Wistar machos con edad de 20 semanas, distribuidos en 4 grupos experimentales de acuerdo con el tratamiento recibido: sedentarios controles (SC), sedentarios que recibieron el DECA (SD), entrenados controles (EC) y entrenados que recibieron el DECA (ED). Se evaluaron parámetros hemodinámicos, como presión arterial y variación de la presión arterial sistólica (VPAS) y diastólica (VPAD) y morfometría renal. El nivel de significancia adoptado fue de 5%. Resultados: El grupo SD presentó valores basales mayores de PAS y PAD cuando comparados a los grupos SC, EC y ED, los cuales fueron semejantes entre sí. Los animales del grupo SD tuvieron valores mayores de la variancia de VPAS y VPAD y valores absolutos mayores y normalizados de la banda LF de la VPAD, en comparación con los animales de los grupos SC, EC y ED. El grupo SD tuvo tasa significativamente mayor de fibrosis renal en comparación con los animales de los grupos SC, EC y ED. No se evidenciaron diferencias considerables entre la modulación simpática de la VPAS a través del componente LF y fibrosis renal. Conclusiones: El entrenamiento físico con natación fue efectivo en prevenir el aumento de niveles presóricos y disminuir la ocurrencia de fibrosis renal en animales tratados con esteroide anabolizante. Nivel de Evidencia IV; Serie de casos .


RESUMO Introdução: O uso indiscriminado de esteroides androgênicos pode ter consequências deletérias no organismo. Objetivo: Avaliar os efeitos da administração crônica do esteroide decanoato de nandrolona (DECA) em ratos Wistar submetidos a treinamento físico com natação sobre a modulação autônoma cardiovascular, morfometria renal e associação entre essas variáveis. Métodos: Foram utilizados 32 ratos Wistar machos com idade de 20 semanas, distribuídos em 4 grupos experimentais de acordo com o tratamento recebido: sedentários controles (SC), sedentários que receberam o DECA (SD), treinados controles (TC) e treinados que receberam o DECA (TD). Avaliaram-se parâmetros hemodinâmicos, como pressão arterial e variação da pressão arterial sistólica (VPAS) e diastólica (VPAD) e morfometria renal. O nível de significância adotado foi de 5%. Resultados: O grupo SD apresentou valores basais maiores de PAS e PAD quando comparado aos grupos SC, TC e TD, os quais foram semelhantes entre si. Os animais do grupo SD tiveram valores maiores da variância da VPAS e VPAD e valores absolutos maiores e normalizados da banda LF da VPAD, em comparação com os animais dos grupos SC, TC e TD. O grupo SD teve taxa significativamente maior de fibrose renal em comparação com os animais dos grupos SC, TC e TD. Não se evidenciaram diferenças consideráveis entre a modulação simpática da VPAS através do componente LF e fibrose renal. Conclusões: O treinamento físico com natação foi efetivo em prevenir o aumento de níveis pressóricos e diminuir a ocorrência de fibrose renal em animais tratados com esteroide anabolizante. Nível de Evidência IV; Série de casos .


Subject(s)
Animals , Male , Rats , Autonomic Nervous System/drug effects , Swimming , Cardiovascular System/drug effects , Nandrolone Decanoate/adverse effects , Anabolic Agents/adverse effects , Kidney Diseases/chemically induced , Physical Conditioning, Animal , Rats, Wistar , Disease Models, Animal , Arterial Pressure/drug effects , Kidney Diseases/prevention & control
3.
Int. j. cardiovasc. sci. (Impr.) ; 33(3): 208-214, May-June 2020. tab, graf
Article in English | LILACS | ID: biblio-1134363

ABSTRACT

Abstract Backgroud: Recent studies show that women on combined oral contraceptives (COC) present abnormal fasting lipid profile, increased postprandial lipemia, plasma C-reactive protein (CRP) and blood pressure (BP) compared to women not on combined oral contraceptives. Plasma renin is one of the factors responsible for abnormal BP. Objectives: To assess plasma renin levels in women using or not using COC, the correlation between renin and CRP, as well as divergences in lipid profile. Methods: A cross-sectional study with apparently healthy women aged 20 to 30, eutrophic, irregularly active, and with fasting triglycerides < 150 mg/dL. The sample was stratified into two groups: the No Combined Oral Contraceptive Group (NCOCG), comprised of women who did not use any type of hormone contraceptive, and the Combined Oral Contraceptive Group (COCG) comprised of women on low-dose COC for at least one year. After a 12-hour fast, 5 ml of blood was collected for renin dosing and PCR. Data were analyzed by the t-Test and bidirectional Mann-Whitney Test, both with significance < 0.05. Results: We evaluated 44 women equally distributed between the groups, age 23 ± 1.2 years, BMI 21.0 ± 3.2 kg/m2. Median and interquartile deviation of renin in the NCOCG and the COCG were, respectively, 0.5 (0.1-1.0) and 3.0 (2-6) (p < 0.01). A positive correlation between PCR and renin (p < 0.01 and r = 0.68) was found. Conclusion: The plasma renin levels of women using COC were higher, with a strong correlation with CRP.


Subject(s)
Humans , Female , Adult , Young Adult , Renin/drug effects , Renin/blood , Contraceptives, Oral, Combined/adverse effects , Arterial Pressure/drug effects , Renin-Angiotensin System/drug effects , Cross-Sectional Studies , Contraceptives, Oral, Combined/pharmacology , Heart Disease Risk Factors , Hypertension/etiology
5.
Int. j. morphol ; 37(2): 739-743, June 2019. tab, graf
Article in Spanish | LILACS | ID: biblio-1002287

ABSTRACT

La preeclampsia (PE) es un trastorno hipertensivo inducido por el embarazo donde se reduce la presión de la perfusión uterina. Investigaciones avalan el uso de dosis baja de aspirina (DBAAS) y su utilidad en la prevención de PE en gestantes con factores de riesgo. Sus beneficios en modelos animales sometidos a esta reduccción no están determinados. El objetivo de la investigación fue analizar la presión arterial sistémica y los hallazgos morfológicos a nivel renal en fetos de ratas con reducción de la presión de perfusión uterina (RPPU) expuestas a DBAAS en comparación a las no expuestas. Se conformaron cuatro grupos de ratas hembras preñadas Sprague Dawley (n=5). A los 14,5 días post-concepción (dpc), vía quirúrgica se indujo RPPU, ligando arterias uterinas, conformándose el grupo RPPU y el grupo RPPU+DBAAS al que se le administró 5 mg/kg/día de aspirina vía oral. El grupo control lo conformaron las no operadas y el grupo DBAAS se le administró aspirina en igual dosis desde el 14,5 dpc. A los 18,5 dpc, previo a la eutansia se midió la presión arterial sistémica con pletismógrafo caudal Insight v2.11 y se extrajeron los fetos. Se midió la longitud céfalo-caudal (LCC), se procesaron y tiñeron con hematoxilina-eosina, describiéndose cortes histológicos transversales a nivel renal. Se determinó que en la presión arterial media, hubo diferencias significativas entre el grupo RPPU y RPPU+DBAAS (p<0,05). El tamaño de los fetos fue menor en el grupo RPPU (p<0,0001), donde 1 feto presentó hernia umbilical congénita. La cuantificación de vesículas renales también fue menor (p<0,005). En conclusión, la administración de DBAAS disminuye los efectos inducidos por la RPPU en cuanto al tamaño fetal, morfología renal y malformaciones congénitas como hernia umbilical. En cuanto a la presión arterial sistémica, tendría efectos sólo en presión arterial media.


Preeclampsia (PE) is a hypertensive disorder induced by pregnancy where there is a reduction in the uterine perfusion pressure. Research supports the use of low dose aspirin (LDAAS) and its usefulness in the prevention of PE in pregnant women with risk factors. Their benefits in animal models subject to RUPP are not determined. The objective of the investigation was to analyze the systemic blood pressure and the morphological findings at renal level in fetuses of rats with reduction of uterine perfusion pressure (RUPP) exposed to LDAAS compared to those not exposed. Four groups of pregnant female rats Sprague Dawley (n=5) were formed. At 14.5 days post-conception (dpc), surgical RUPP was induced, ligating uterine arteries, with the RUPP group and RUPP+LDAAS group being given 5 mg/kg/day of aspirin orally. The control group was made up of those not operated and the LDAAS group was administered aspirin in the same dose from 14.5 dpc. A 18.5 dpc, prior to euthanasia systemic blood pressure was measured with flow plethysmograph Insight v2.11 and fetuses were extracted. The cephalo-caudal length (CCL) was measured, processed and stained with hematoxylin-eosin, describing transverse histological sections at the kidney level. It was determined that in the mean arterial pressure, there were significant differences between the group RUPP and RUPP+LDAAS (p <0.05). The size of the fetuses was lower in the RUPP group (p <0.0001), where one fetus presented congenital umbilical hernia. The quantification of renal vesicles was also lower (p <0.005). In conclusion, the administration of LDAAS decreases the effects induced by RUPP in terms of fetal size, renal morphology and congenital malformations such as umbilical hernia. Regarding the systemic blood pressure, effects would only mean arterial pressure.


Subject(s)
Animals , Female , Pregnancy , Rats , Blood Pressure/drug effects , Aspirin/administration & dosage , Hypertension, Pregnancy-Induced/drug therapy , Perfusion , Regional Blood Flow , Uterus/blood supply , Aspirin/pharmacology , Prospective Studies , Longitudinal Studies , Rats, Sprague-Dawley , Fetus , Arterial Pressure/drug effects
6.
Salud(i)ciencia (Impresa) ; 23(4): 314-324, mar. 2019. tab
Article in English, Spanish | LILACS, BINACIS | ID: biblio-1009999

ABSTRACT

Introduction: Hypertension is one of the most common cardiovascular risk factors but the medication\r\nadherence rate among hypertensive patients is low. Objectives: To develop, validate and test the reliability of Medication Adherence Questionnaire (MAQ) in hypertensive patients. Materials and methods: A\r\ncross-sectional study was conducted among hypertensive patients in Department of General Medicine\r\nfor eight months. The MAQ was prepared by referring to the previously validated questionnaires and\r\nother related medication adherence studies. It was validated by the expert committee and tested for\r\ntest-retest reliability. The medication adherence data It was validated collected from patients who have\r\nbeen receiving at least one antihypertensive medication in the past three months. Results: The mean\r\nmedication adherence score for the test and re-test are 66.25 ± 19.49 were 67.50 ± 19.19 respectively,\r\nand the test-retest reliability of MAQ was 0.979. Out of 299 patients, 180 (60.20%) were males, and\r\n118 (39.46%) were females. In our study population, most of the patients were found to have medium\r\nmedication adherence (53.84%) followed by low medication adherence (39.13%) and high medication\r\nadherence (7.02%). Conclusion: The self-reported 8-item MAQ It was validated developed and tested\r\nfor reliability in South Indian hypertensive patients.The mean medication adherence of the study population was 71.77 ± 13.94, which indicates low medication adherence to antihypertensive treatment


Introducción: La hipertensión es uno de los factores de riesgo cardiovascular más frecuentes y el índice\r\nde adhesión al tratamiento entre los pacientes hipertensos es bajo. Objetivos: Elaborar, validad y evaluar\r\nla fiabilidad del Medication Adherence Questionnaire (MAQ) en pacientes hipertensos. Materiales y métodos: Se llevó a cabo un estudio transversal durante ocho meses en pacientes hipertensos atendidos en\r\nel Departamento de Medicina General. El MAQ fue elaborado con referencia a cuestionarios validados\r\ncon anterioridad y de acuerdo con lo hallado en otros estudios relacionados con la adhesión al tratamiento farmacológico. La validación del MAQ fue realizada por el comité de expertos y analizada en\r\ntérminos de fiabilidad prueba-repetición de la prueba. La información sobre la adhesión al tratamiento\r\nfarmacológico fue recabada mediante la evaluación de los pacientes que habían recibido al menos una\r\ndroga antihipertensiva durante los últimos tres meses. Resultados: El puntaje medio correspondiente a la\r\nadhesión al tratamiento ante la prueba y la reiteración de la prueba fue 66.25 ± 19.49 y 67.5 ± 19.19,\r\nrespectivamente, y la fiabilidad del MAQ fue 0.979. De los 299 pacientes, 180 (60.2%) fueron de sexo\r\nmasculino y 118 (39.46%) fueron de sexo femenino. En nuestra población en estudio, la mayoría de los\r\npacientes presentaron un nivel intermedio de adhesión al tratamiento farmacológico (53.84%), seguido\r\npor el nivel bajo (39.13%) y elevado de adhesión al tratamiento farmacológico (7.02%). Conclusión: El\r\ncuestionario autoadministrado MAQ de ocho ítems fue creado y evaluado en términos de fiabilidad en\r\npacientes hipertensos residentes en el sur de la India. El puntaje medio correspondiente a la adhesión al\r\ntratamiento farmacológico en la población en estudio fue 71.77 ± 13.94, lo cual indica un nivel bajo de\r\nadhesión al tratamiento con drogas antihipertensivas


Subject(s)
Humans , Arterial Pressure/drug effects , Treatment Adherence and Compliance , Hypertension/drug therapy , Antihypertensive Agents
7.
J. bras. pneumol ; 45(3): e20170164, 2019. tab, graf
Article in English | LILACS | ID: biblio-1012550

ABSTRACT

ABSTRACT Objective: To evaluate the pulmonary alterations of animals with Hepatopulmonary Syndrome (HPS) submitted to Biliary Duct Ligature (BDL), as well as the antioxidant effect of Melatonin (MEL). Methods: Sixteen male Wistar rats, divided into four Sham groups: BDL group, Sham + MEL group and BDL + MEL. The pulmonary and hepatic histology, lipoperoxidation and antioxidant activity of lung tissue, alveolar-arterial O2 difference and lung / body weight ratio (%) were evaluated. Results: When comparing the groups, could be observed an increase of vasodilation and pulmonary fibrosis in the BDL group and the reduction of this in relation to the BDL + MEL group. It was also observed significant changes in the activity of catalase, ApCO2, ApO2 in the LBD group when compared to the other groups. Conclusion: The use of MEL has been shown to be effective in reducing vasodilation, fibrosis levels and oxidative stress as well as gas exchange in an experimental HPS model.


RESUMO Objetivo: Avaliar as alterações pulmonares de animais com Síndrome Hepatopulmonar (SHP), submetidos à ligadura de ducto biliar (LDB), bem como o efeito antioxidante da Melatonina (MEL). Métodos: Dezesseis ratos machos da espécie Wistar, divididos em quatro grupos: Sham, Grupo LDB, Grupo Sham + MEL e LDB + MEL. Foram avaliadas a histologia pulmonar e hepática, a lipoperoxidação e atividade antioxidante do tecido pulmonar, diferença álveolo-arterial de O2 e relação peso pulmonar/peso corporal (%). Resultados: Quando comparados os grupos, observamos um aumento da vasodilatação e fibrose pulmonar no grupo LDB e a redução deste em relação ao grupo LDB+MEL. Observamos ainda alterações significativas na atividade da catalase, PaCO2, PaO2 no grupo LBD quando comparado aos demais grupos. Conclusões: A utilização da MEL demonstrou-se eficaz na redução da vasodilatação, níveis de fibrose e estresse oxidativo assim como na troca gasosa em modelo experimental de SHP.


Subject(s)
Animals , Male , Hepatopulmonary Syndrome/drug therapy , Lung/drug effects , Melatonin/pharmacology , Antioxidants/pharmacology , Bile Ducts/surgery , Blood Gas Analysis , Lipid Peroxidation/drug effects , Catalase/analysis , Hepatopulmonary Syndrome/physiopathology , Hepatopulmonary Syndrome/pathology , Disease Models, Animal , Arterial Pressure/drug effects , Glutathione Transferase/analysis , Ligation , Liver/drug effects , Liver/pathology
8.
Acta cir. bras ; 34(9): e201900905, 2019. tab, graf
Article in English | LILACS | ID: biblio-1054693

ABSTRACT

Abstract Purpose: To investigate efficacy of combined use of parecoxib and dexmedetomidine on postoperative pain and early cognitive dysfunction after laparoscopic cholecystectomy for elderly patients. Methods: The present prospective randomized controlled study included a total of 80 patients who underwent laparoscopic cholecystectomy surgery during January 2016 to November 2017 in our hospital. All patients were randomly divided into 4 groups, the parecoxib group, the dexmedetomidine group, the parecoxib and dexmedetomidine combined group, and the control group. Demographic data and clinical data were collected. Indexes of heart rate (HR), mean arterial pressure (MAP), levels of jugular venous oxygen saturation (SjvO2) and jugular venous oxygen pressure (PjvO2) were recorded at different time points before and during the surgery. The mini-mental state examination (MMSE) score, Ramsay score and Visual Analogue Score (VAS) were measured. Results: Levels of both SjvO2 and PjvO2 were significantly higher in parecoxib group, dexmedetomidine group and the combined group than the control group. Meanwhile, levels of both SjvO2 and PjvO2 in the combined group were the highest. VAS scores were significantly lower in the combined group than all other groups, and total patient controlled intravenous analgesia (PCIA) pressing times within 48 h after surgery were the lowest in the combined group. Both Ramsay and MMSE scores were the highest in the combined group compared with other groups, while were the lowest in the control group. Conclusion: The combined use of parecoxib and dexmedetomidine could reduce the postoperative pain and improve the postoperative sedation and cognitive conditions of patients after laparoscopic cholecystectomy.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Aged, 80 and over , Pain, Postoperative/drug therapy , Cholecystectomy, Laparoscopic/adverse effects , Cyclooxygenase 2 Inhibitors/administration & dosage , Adrenergic alpha-2 Receptor Agonists/administration & dosage , Isoxazoles/administration & dosage , Time Factors , Pain Measurement , Prospective Studies , Analysis of Variance , Treatment Outcome , Drug Therapy, Combination , Arterial Pressure/drug effects , Heart Rate/drug effects
9.
Rev. chil. obstet. ginecol. (En línea) ; 84(2): 112-121, 2019. tab
Article in Spanish | LILACS | ID: biblio-1013820

ABSTRACT

RESUMEN OBJETIVO: Establecer la utilidad de la furosemida en el control de la hipertensión arterial posparto en preeclámpticas severa. MÉTODOS: Se realizó un estudio de casos y controles en el Hospital Central "Dr. Urquinaona", Maracaibo, Venezuela. Se incluyeron pacientes con preeclampsia severa, las cuales durante el posparto fueron asignadas al azar para ser tratadas con furosemida, alfametildopa y cloruro de potasio oral (grupo A) o alfa-metildopa oral (grupo B) por 48 horas. Los parámetros evaluados fueron: variaciones en los valores de presión arterial y frecuencia cardiaca, persistencia de hipertensión, parámetros de laboratorio y efectos adversos. RESULTADOS: Para el análisis final estaban disponibles los datos de 198 pacientes en el grupo A y 197 pacientes en el grupo B en cada uno de los grupos. Luego de 48 horas de tratamiento se observaron disminuciones estadísticamente significativas en los valores de presión arterial sistólica y diastólica entre las pacientes tratadas con furosemida y las pacientes del grupo control (p < 0,0001). Se observó persistencia de la hipertensión en 52 pacientes (26,3 %) del grupo A y en 134 pacientes (68,0 %) del grupo B (p < 0,0001). No se encontraron diferencias entre los grupos en la frecuencia cardiaca, valores de laboratorio y efectos adversos (p = ns). CONCLUSIÓN: La furosemida produce disminuciones significativas en los valores promedios de presión arterial sistólica y diastólica, al igual que en la frecuencia de persistencia de hipertensión postparto en preeclámpticas severas.


ABSTRACT OBJECTIVE: To establish the utility of furosemide in the control of postpartum blood pressure in severe preeclamptic patients. METHODS: A case-control study was conducted at the Central Hospital "Dr. Urquinaona", Maracaibo, Venezuela. Patients diagnosed with severe preeclampsia were included, who during the postpartum period were randomized to be treated with furosemide, alpha-methyldopa and oral potassium chloride (group A) or oral alpha-methyldopa (group B) for 48 hours. The parameters evaluated were: variations in blood pressure and heart rate values, the persistence of hypertension, laboratory parameters and adverse effects related to treatment. RESULTS: Data of 198 patients in group A and 197 patients in group B in each of the groups were available for the final analysis. After 48 hours of treatment, statistical significant decreases were observed in the values of systolic and diastolic blood pressure between patients treated with furosemide and patients in the control group (p <0.0001). Persistence of hypertension was observed in 52 patients (26.3 %) of group A and in 134 patients (68.0 %) of group B (p < 0.0001). No differences were found between the groups in heart rate, laboratory values and adverse effects (p = ns). CONCLUSION: Furosemide produces significant decreases in the mean values of systolic and diastolic blood pressure, as well as in the frequency of persistence of postpartum hypertension in severe preeclamptic patients.


Subject(s)
Humans , Female , Pregnancy , Adult , Diuretics/therapeutic use , Furosemide/therapeutic use , Hypertension/drug therapy , Pre-Eclampsia/drug therapy , Case-Control Studies , Postpartum Period , Diuretics/adverse effects , Arterial Pressure/drug effects , Furosemide/adverse effects
10.
Rev. cient. Esc. Univ. Cienc. Salud ; 5(1): 41-49, ene.-jun. 2018. tab
Article in Spanish | LILACS | ID: biblio-979935

ABSTRACT

Diclofenaco es un fármaco de variado uso por su libre venta en todos los países. Es un derivado de fenil-acético con propiedades analgésicas, antiinflamatorias y antipiréti-cas, debido a su mecánismo de acción: inhi-bición de las ciclooxigenasas con mediana selectividad hacia la ciclooxigenasa. Su principal indicación es para dolor de leve a moderado. El tiempo de uso del diclofenaco dependerá de la forma y objetivo de aplica-ción; los efectos adversos están estrecha-mente relacionados con el tiempo de uso y la idiosincrasia de cada persona. Algunas de las consecuencias destacables se manifies-tan en el sistema gastrointestinal, hematoló-gico, hepático, cardiaco, renal, sistema nervioso central y piel. El uso prescrito del diclofenaco, es de 3 - 5 días y se relaciona con la inducción de dispepsia, esofagitis, náuseas, vómitos, cefaleas e hipercoagula-bilidad, mientras que el uso crónico, alrede-dor de 90 días, puede inducir el desarrollo de hipertensión arterial, accidente cerebro vascular, infarto agudo al miocardio, hepati-tis fulminante, hemorragias gástricas, úlce-ras pépticas, fallo renal agudo, entre otras. El síndrome de Steven-Johnson y la necró-lisis epidérmica tóxica, son reacciones de hipersensibilidad relacionados con el tiempo de uso de este fármaco. Entre otros efectos del diclofenaco encontramos el bloqueo de los canales de sodio, calcio y potasio depen-dientes de voltaje, mecanismo por el cual causa analgesia sin la inhibición de la forma ción de prostaglandinas...(AU)


Subject(s)
Humans , Diclofenac/adverse effects , Stroke/complications , Arterial Pressure/drug effects , Drug Misuse/adverse effects
11.
J. appl. oral sci ; 26: e20180048, 2018. graf
Article in English | LILACS, BBO | ID: biblio-954519

ABSTRACT

Abstract Objective: Periodontitis is associated with endothelial dysfunction, which is clinically characterized by a reduction in endothelium-dependent relaxation. However, we have previously shown that impairment in endothelium-dependent relaxation is transient. Therefore, we evaluated which mediators are involved in endothelium-dependent relaxation recovery. Material and methods: Rats were subjected to ligature-induced experimental periodontitis. Twenty-one days after the procedure, the animals were prepared for blood pressure recording, and the responses to acetylcholine or sodium nitroprusside were obtained before and 30 minutes after injection of a nitric oxide synthase inhibitor (L-NAME), cyclooxygenase inhibitor (Indomethacin, SC-550 and NS- 398), or calcium-dependent potassium channel blockers (apamin plus TRAM- 34). The maxilla and mandible were removed for bone loss analysis. Blood and gingivae were obtained for C-reactive protein (CRP) and myeloperoxidase (MPO) measurement, respectively. Results: Experimental periodontitis induces bone loss and an increase in the gingival MPO and plasmatic CRP. Periodontitis also reduced endothelium-dependent vasodilation, a hallmark of endothelial dysfunction, 14 days after the procedure. However, the response was restored at day 21. We found that endothelium-dependent vasodilation at day 21 in ligature animals was mediated, at least in part, by the activation of endothelial calcium-activated potassium channels. Conclusions: Periodontitis induces impairment in endothelial-dependent relaxation; this impairment recovers, even in the presence of periodontitis. The recovery is mediated by the activation of endothelial calcium-activated potassium channels in ligature animals. Although important for maintenance of vascular homeostasis, this effect could mask the lack of NO, which has other beneficial properties.


Subject(s)
Animals , Male , Periodontitis/physiopathology , Periodontitis/metabolism , Vasodilation/physiology , Potassium Channels/metabolism , Prostaglandin-Endoperoxide Synthases/metabolism , Nitric Oxide/metabolism , Time Factors , Vasodilation/drug effects , Vasodilator Agents/pharmacology , C-Reactive Protein/analysis , Nitroprusside/pharmacology , Potassium Channels/drug effects , Acetylcholine/pharmacology , Random Allocation , Alveolar Bone Loss/physiopathology , Alveolar Bone Loss/metabolism , Cyclooxygenase Inhibitors/pharmacology , Prostaglandin-Endoperoxide Synthases/drug effects , Rats, Wistar , Peroxidase/analysis , NG-Nitroarginine Methyl Ester/pharmacology , Potassium Channel Blockers/pharmacology , Arterial Pressure/drug effects , Arterial Pressure/physiology , Ligation
12.
Rev. cuba. anestesiol. reanim ; 16(2): 28-39, may.-ago. 2017. ilus
Article in Spanish | LILACS, CUMED | ID: biblio-960306

ABSTRACT

Introducción: La preeclampsia en Cuba tiene una incidencia de 10 a 12 y una mortalidad neonatal de 35 por ciento. Hay escasa evidencia acerca de si es adecuado el tratamiento estándar. Se acepta el uso de anestesia epidural en la preeclampsia grave porque, entre otros beneficios, estabiliza la presión arterial. Objetivo: Evaluar la eficacia de la anestesia epidural continua como coadyuvante en el control posoperatorio de la tensión arterial en pacientes con preeclampsia grave. Métodos: Se realizó un estudio experimental en el hospital Dr. Agostinho Neto en el periodo 2013-2016. Se incluyeron 180 gestantes entre 15 y 40 años con preeclampsia grave intervenidas por cesárea, ASA III; asignadas aleatoriamente a un grupo de estudio y otro de control. En ambos se procedió según la norma cubana de obstetricia para el tratamiento de la preeclampsia. El grupo control recibió analgesia posoperatoria según recomendaciones del protocolo hospitalario, mientras se empleó anestesia epidural continua con 12,5 mg/h de bupivacaína al 0,125 por ciento en el grupo de estudio. Se midió la tensión arterial sistólica, diastólica y media durante las ocho primeras horas posoperatorias: Resultados: La tensión arterial sistólica y diastólica se controló en 93 por ciento y 88 por ciento, respectivamente. En el grupo control, 47 por ciento necesitó tres drogas antihipertensivas, 6 por ciento evolucionó hacia la eclampsia. Se controlaron los síntomas en el 97 por ciento del grupo de estudio. La taquicardia fue el efecto secundario esperado más frecuente de la anestesia epidural. Conclusiones: La anestesia epidural con bupivacaína al 12,5 mg/h es eficaz como coadyuvante en el control de la tensión arterial en el posoperatorio de pacientes con preeclampsia grave(AU)


Introduction: Preeclampsia in Cuba has an incidence of 10 to 12 and a neonatal mortality of 35 percent. There is little evidence about the standard treatment. The use of epidural anesthesia in severe preeclampsia is accepted because, among other benefits, it stabilizes blood pressure. Objective: To evaluate the effectiveness of continuous epidural anesthesia as an adjuvant in the postoperative control of blood pressure in patients with severe preeclampsia. Method: An experimental study was performed at Dr. Agostinho Neto Hospital in the period 2013-2016. We included 180 pregnant women aged 15-40 and with severe preeclampsia undergoing cesarean section (ASA III), randomly assigned to a study group and a control group. In both cases, we used the Cuban obstetrical standard for treating preeclampsia. The control group received postoperative analgesia according to the recommendations of the hospital protocol, while continuous epidural anesthesia was used with 12.5 mg/h of bupivacaine 0.125 percent in the study group. Systolic, diastolic and mean arterial pressure were measured during the first eight postoperative hours. Results: Systolic and diastolic blood pressure was controlled in 93 percent and 88 percent, respectively. In the control group, 47 percent needed three antihypertensive drugs, while 6 percent evolved towards eclampsia. Symptoms were controlled in 97 percent of the study group. Tachycardia was the most common expected side effect of epidural anesthesia. Conclusions: Epidural anesthesia with 12.5 mg/h of bupivacaine is effective as an adjuvant in controlling postoperative blood pressure in patients with severe preeclampsia(AU)


Subject(s)
Humans , Female , Pregnancy , Adolescent , Adult , Young Adult , Pre-Eclampsia/drug therapy , Arterial Pressure/drug effects , Anesthesia, Epidural/methods , Bupivacaine/therapeutic use
13.
Clin. biomed. res ; 37(4): 323-329, 2017. tab, graf
Article in English | LILACS | ID: biblio-876698

ABSTRACT

Introduction: Important changes in human dietary pattern occurred in recent decades. Increased intake of processed foods leads to obesity, which is related with the development of chronic diseases such as type 2 diabetes mellitus, hypertension, as well as cardiovascular and chronic kidney diseases. The prevalence of hypertension has also dramatically increased in recent years, and high sodium intake contributes to this scenario. In healthy individuals, kidneys are the primary end-organs that regulate sodium homeostasis. This study aims to evaluate renal function parameters and systolic blood pressure measurements in an animal model of obesity. Methods: Sixty-day-old male Wistar rats (n=30) were divided into two groups: standard (SD) and cafeteria diet (CD). Cafeteria diet was altered daily and was composed by crackers, wafers, sausages, chips, condensed milk, and soda. All animals had free access to water and chow and the experiment was carried out for 6 weeks. Weight gain, sodium and liquid intake control, systolic blood pressure measurements, and renal function parameters were evaluated. Results: Animals exposed to cafeteria diet had an increase of 18% in weight compared to the control group. Sodium intake was increased by cafeteria diet and time (F(1,28)=773.666, P=0.001 and F(5,28)=2.859, P=0.02, respectively) and by the interaction of both factors (F(6,28)=2.859, P=0.02). On liquid intake occurred only effect of cafeteria diet and time (F(1,28)=147.04, P=0.001 and F(5,28)=3.996, P=0.003, respectively). Cafeteria diet exposure also induced an increase on creatinine serum levels (P=0.002), however this effect was not observed on creatinine urine levels (P>0.05) nor on systolic pressure measurements (Students' t test, P>0.05). Conclusions: Obesity induced by cafeteria diet exposure increases liquid intake and alters creatinine serum levels, an important renal function marker. Considering the high consumption of hypercaloric food currently in the world, further studies are required to elucidate the modifications on renal function triggered by this diet over time (AU)


Subject(s)
Animals , Male , Rats , Creatinine/blood , Diet, Western/adverse effects , Drinking/drug effects , Hypertension/chemically induced , Kidney/physiopathology , Arterial Pressure/drug effects , Creatinine/urine , Disease Models, Animal , Kidney/drug effects , Obesity/blood , Obesity/etiology , Rats, Wistar , Sodium, Dietary/adverse effects
14.
Braz. J. Pharm. Sci. (Online) ; 53(4): e17077, 2017. tab, graf
Article in English | LILACS | ID: biblio-1039032

ABSTRACT

The aim of this study is to investigate the effectiveness of intravenous administration of Berberis vulgaris root bark aqueous extract (BRBD) on the cardiovascular and renal functions of healthy normotensive rats. The different doses of BRBD 1, 10 and 20 mg/kg were administered intravenously (i.v) in normal rats. Blood pressure, diuretic activity and serum renal profile were analyzed. Intravenous injection of BRBD at the different doses of 1, 10 and 20 mg/kg showed a dose-dependent reduction in mean arterial blood pressure (P<0.001). At different doses of 1, 10 and 20 mg/kg, the hypotensive effect remained for more than one hour. Single dose administration of BRBD at doses of 10 and 20 mg/kg caused a significant increase in urine output (P<0.001) as compared to the control rats. Serum renal profile test (albumin, Urea, Uric Acid, creatinine and BUN) did not show any significant alteration. The authors conclude that the BRBD is a potent hypotensive and possesses diuretic potential


Subject(s)
Animals , Male , Female , Rats , Plant Extracts/adverse effects , Berberis vulgaris/adverse effects , Administration, Intravenous/instrumentation , Plant Bark , Arterial Pressure/drug effects
15.
Ciênc. cuid. saúde ; 15(2): 321-327, Abr.-Jun. 2016. tab
Article in Portuguese | LILACS, BDENF | ID: biblio-974840

ABSTRACT

RESUMO Atualmente as doenças crônicas não transmissíveis são as principais causas de morte no mundo. Consideradas doenças multifatoriais, têm em comum fatores de riscos modificáveis tais como inatividade física, colesterol elevado, excesso de peso, tabagismo, consumo excessivo de bebidas alcoólicas e alimentação não saudável. Com o objetivo de verificar o impacto por um programa de Gerenciamento de Doenças Crônicas, após dois anos de acompanhamento, surgiu esta pesquisa. Trata-se de programa desenvolvido com um grupo de clientes de uma autogestão localizada no estado de São Paulo. É um estudo transversal realizado durante os anos de 2014-2015 com dados de prontuário eletrônico que foram comparados parâmetros clínicos e hábitos de vida de 1.509 indivíduos participantes de um programa de gerenciamento de doenças em dois momentos: na entrada ao programa e após dois anos de participação. Observaram-se resultados satisfatórios na melhora de parâmetros clínicos relacionados aos níveis pressóricos e à dosagem de glicemia em jejum, assim como diminuição do sedentarismo em indivíduos abaixo dos 60 anos.


RESUMEN Actualmente las enfermedades crónicas no transmisibles son las principales causas de muerte en todo el mundo. Consideradas enfermedades multifactoriales, tienen en común factores de riesgo modificables, tales como inactividad física, colesterol alto, sobrepeso, tabaco, exceso de alcohol y alimentación poco sana. Con el objetivo de averiguar el impacto por un programa de Gestión de Enfermedades Crónicas, tras dos años de acompañamiento, se hizo esta investigación. Se trata de un programa desarrollado con un grupo de clientes de una autogestión ubicada en el estado de São Paulo, Brasil. Es un estudio transversal realizado durante los años de 2014-2015 con datos de registros médicos electrónicos, comparándose los parámetros clínicos y hábitos de vida de 1.509 personas que participan en un programa de gestión de enfermedades en dos ocasiones: cuando entran en el programa y después de dos años de participación. Se observaron resultados satisfactorios en la mejora de los parámetros clínicos relacionados con los niveles de presión arterial y a la dosificación de glucemia en ayunas, así como la disminución de la inactividad física en personas con edad abajo de 60 años.


ABSTRACT Currently, non-transmissible chronic diseases are leading causes of death worldwide. Considered as multifactorial diseases, they have common modifiable risk factors such as physical inactivity, high cholesterol, overweight, smoking, excessive alcohol consumption, and unhealthy diets. Aiming at verifying the impact of theChronic Disease Management program, this study arose after two years of follow-up. This is a program developed with a group of customers in a self-management platform in the state of São Paulo. This was a cross-sectional study carried out during 2014 and 2015 with electronic medical record data through the comparison ofthe clinical and lifestyle parameters of 1,509 individuals participating in a disease management program in two moments: at the program'sentry and two years after participation. Satisfactory results in the improvement of clinical parameters related to blood pressure and blood glucose levels in fasting were observed as well as decreased physical inactivity in individuals under 60 years of age.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Health Programs and Plans/standards , Chronic Disease/nursing , Prepaid Health Plans/standards , Health Promotion/standards , Tobacco Use Disorder/prevention & control , Blood Glucose/analysis , Blood Pressure/drug effects , Aging/drug effects , Alcohol Drinking/adverse effects , Cholesterol/analysis , Cause of Death/trends , Glycemic Index/drug effects , Diabetes Mellitus, Type 2/nursing , Diet/statistics & numerical data , Overweight/metabolism , Electronic Health Records/statistics & numerical data , Arterial Pressure/drug effects , Noncommunicable Diseases/classification , Hypertension/nursing , Motor Activity/drug effects
16.
Braz. j. med. biol. res ; 48(4): 370-376, 4/2015. tab
Article in English | LILACS | ID: lil-744355

ABSTRACT

Myocardial ischemia, as well as the induction agents used in anesthesia, may cause corrected QT interval (QTc) prolongation. The objective of this randomized, double-blind trial was to determine the effects of high- vs conventional-dose bolus rocuronium on QTc duration and the incidence of dysrhythmias following anesthesia induction and intubation. Fifty patients about to undergo coronary artery surgery were randomly allocated to receive conventional-dose (0.6 mg/kg, group C, n=25) or high-dose (1.2 mg/kg, group H, n=25) rocuronium after induction with etomidate and fentanyl. QTc, heart rate, and mean arterial pressure were recorded before induction (T0), after induction (T1), after rocuronium (just before laryngoscopy; T2), 2 min after intubation (T3), and 5 min after intubation (T4). The occurrence of dysrhythmias was recorded. In both groups, QTc was significantly longer at T3 than at baseline [475 vs 429 ms in group C (P=0.001), and 459 vs 434 ms in group H (P=0.005)]. The incidence of dysrhythmias in group C (28%) and in group H (24%) was similar. The QTc after high-dose rocuronium was not significantly longer than after conventional-dose rocuronium in patients about to undergo coronary artery surgery who were induced with etomidate and fentanyl. In both groups, compared with baseline, QTc was most prolonged at 2 min after intubation, suggesting that QTc prolongation may be due to the nociceptive stimulus of intubation.


Subject(s)
Aged , Female , Humans , Male , Middle Aged , Androstanols/administration & dosage , Anesthesia, General/methods , Coronary Vessels/surgery , Electrocardiography/drug effects , Intubation/adverse effects , Neuromuscular Nondepolarizing Agents/administration & dosage , Anesthetics, Intravenous/therapeutic use , Arrhythmias, Cardiac/epidemiology , Arrhythmias, Cardiac/etiology , Arterial Pressure/drug effects , Double-Blind Method , Etomidate/therapeutic use , Fentanyl/therapeutic use , Heart Rate/drug effects , Intubation/methods , Laryngoscopy , Statistics, Nonparametric
17.
Rev. chil. cardiol ; 34(1): 18-27, abr. 2015. tab
Article in Spanish | LILACS | ID: lil-749424

ABSTRACT

Antecedentes: Inadecuado control de presión arterial (PA) y baja adherencia a tratamiento farmacológico (Rx) en hipertensos son problemas persistentes globales y en Chile. Factores socioeconómicos y psicosociales han sido frecuentemente mencionados, pero escasamente en Chile. Objetivo: Evaluar control de la PA y adherencia a Rx en hipertensos seguidos en el Programa de Salud Cardiovascular (PSCV) y su asociación con factores clínicos, socioeconómicos y psicosociales. Métodos: Muestra randomizada de 1.794 hipertensos seguidos por 1 año en PSCV en Región Metropolitana. Se evaluó la asociación de edad, sexo, educación, ingreso familiar, Rx, diabetes, obesidad, tabaquismo, consumo problemático de alcohol y actividad física con el control de la PA (<140/90 mmHg) y adherencia. Además, en 600 pacientes, se evaluó la asociación con estrés emocional/depre-sión, relación médico-paciente y apoyo social. Se obtuvieron Odds Ratio (OR) mediante análisis de regresión logística multivariante. Resultados: PA controlada se comprobó en 56,5% y adherencia en 37,3% sin documentarse asociación entre ambas (OR 1,01 [IC 95% 0,78 - 1,32]). Factores asociados a PA no controlada y no adherencia fueron: edad, bajo ingreso familiar, inadecuada relación medico-paciente y alto nivel de estrés emocio-nal/depresión. Rx múltiple y obesidad se asociaron a PA no controlada; sexo masculino y baja educación a no adherencia. Conclusiones: El control de la PA (56,5%) fue similar a resultados de países desarrollados y supera ampliamente cifras de la Encuesta Nacional de Salud 2010 (16,9%). Estos resultados y la falta de asociación entre el control de la PA y la adherencia, sugieren la favorable influencia de otros factores posiblemente relacionados al PSCV.


Background: Unsatisfactory blood pressure (BP) control and low adherence to antihypertensive pharmacotherapy (Rx) in hypertensive populations are persistent problems worldwide and also in Chile. Socioeconomic and psychosocial factors have been frequently mentioned, but with limited contributions from Chile. Objective: The assessment of BP control and adherence to Rx in hypertensive patients followed in the Cardiovascular Health Program (CVHP) and to determine their association with clinical, socioeconomic and psychosocial characteristics. Methods: A randomized sample of 1,794 hypertensive patients followed for 1 year under the CVHP in Metropolitan Region. Association of BP control (<140/90 mmHg) and adherence with age, gender, education, income, Rx, diabetes, obesity, smoking, alcohol use problem and physical activity were analyzed. In a subgroup of 600 patients additional analysis included the association with emotional stress and depression, patient-physician relation and social support. Odds Ratio (OR) were obtained by multivariate logistic regression. Results: BP control was achieved in 56.5% and adherence in 37.3%. No association was found between them (OR 1.01 [CI 95% 0.78-1.32]). Uncontrolled BP and no adherence were associated to advanced age, low income, poor patient-physician relation and high stress-depression. Obesity and multiple Rx were associated to uncontrolled BP. Male gender and low education, were associated to no adherence. Conclusions: BP control (56.5%) was similar to results obtained in developed countries and is strikingly higher than the results reported in the 2010 Chilean National Health Survey (16.9%). These results and the lack of association between BP control and adherence suggest the favorable influence of unaccounted factors, possibly related to the CVHP.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Primary Health Care , Patient Compliance , Arterial Pressure/drug effects , Hypertension/drug therapy , Physician-Patient Relations , Socioeconomic Factors , Logistic Models , Multivariate Analysis , Surveys and Questionnaires , Medication Adherence , Life Style , Antihypertensive Agents/therapeutic use
18.
Braz. j. med. biol. res ; 48(2): 128-139, 02/2015. tab, graf
Article in English | LILACS | ID: lil-735856

ABSTRACT

The rat posterodorsal medial amygdala (MePD) links emotionally charged sensory stimuli to social behavior, and is part of the supramedullary control of the cardiovascular system. We studied the effects of microinjections of neuroactive peptides markedly found in the MePD, namely oxytocin (OT, 10 ng and 25 pg; n=6/group), somatostatin (SST, 1 and 0.05 μM; n=8 and 5, respectively), and angiotensin II (Ang II, 50 pmol and 50 fmol; n=7/group), on basal cardiovascular activity and on baroreflex- and chemoreflex-mediated responses in awake adult male rats. Power spectral and symbolic analyses were applied to pulse interval and systolic arterial pressure series to identify centrally mediated sympathetic/parasympathetic components in the heart rate variability (HRV) and arterial pressure variability (APV). No microinjected substance affected basal parameters. On the other hand, compared with the control data (saline, 0.3 µL; n=7), OT (10 ng) decreased mean AP (MAP50) after baroreflex stimulation and increased both the mean AP response after chemoreflex activation and the high-frequency component of the HRV. OT (25 pg) increased overall HRV but did not affect any parameter of the symbolic analysis. SST (1 μM) decreased MAP50, and SST (0.05 μM) enhanced the sympathovagal cardiac index. Both doses of SST increased HRV and its low-frequency component. Ang II (50 pmol) increased HRV and reduced the two unlike variations pattern of the symbolic analysis (P<0.05 in all cases). These results demonstrate neuropeptidergic actions in the MePD for both the increase in the range of the cardiovascular reflex responses and the involvement of the central sympathetic and parasympathetic systems on HRV and APV.


Subject(s)
Animals , Male , Arterial Pressure/drug effects , Baroreflex/drug effects , Corticomedial Nuclear Complex/drug effects , Heart Rate/drug effects , Neuropeptides/pharmacology , Wakefulness , Analysis of Variance , Angiotensin II/administration & dosage , Brain/anatomy & histology , Cardiovascular System/innervation , Corticomedial Nuclear Complex/metabolism , Hemodynamics/drug effects , Microinjections , Neuropeptides/administration & dosage , Oxytocin/administration & dosage , Parasympathetic Nervous System/drug effects , Rats, Wistar , Statistics, Nonparametric , Somatostatin/administration & dosage , Sympathetic Nervous System/drug effects , Vascular Access Devices
19.
Acta cir. bras ; 30(1): 67-72, 01/2015. tab
Article in English | LILACS | ID: lil-735703

ABSTRACT

PURPOSE: To assess the bispectral index (BIS) and recovery in calves anesthetized with xylazine, midazolam, ketamine and isoflurane and subjected to CRI of lidocaine. METHODS: Xilazine was administered followed by ketamine and midazolam, orotracheal intubation and maintenance on isoflurane using mechanical ventilation. Lidocaine (2 mg kg-1 bolus) or saline (0.9%) was administered IV followed by a CRI (100 µg kg-1 minute-1) of lidocaine (L) or saline (C). Were recorded BIS, heart rate (HR), mean arterial pressure (MAP) and rectal temperature (RT) before administration of premedication (TB) and 15 minutes after (TX), before administering lidocaine (T0) and 20, 40, 60 and 80 minutes after the start of the CRI . Time do sternal recumbency (SRE) and standing (ST) and plasma lidocaine concentration also evaluated. RESULTS: In both treatments BIS decreased significantly at all times compared to TB. TX was higher than the subsequent times. HR decreased from baseline at all times and decreased from T40 in L compared to C. SRE was higher in L compared to C. CONCLUSIONS: Bispectral index values were consistent with the degree of hypnosis of the animals. Lidocaine did not potentiate isoflurane anesthesia assessed by BIS in unstimulated calves anesthetized with constant E´Iso. Lidocaine increased the time to sternal recumbency. .


Subject(s)
Animals , Cattle , Male , Anesthesia Recovery Period , Anesthesia/veterinary , Anesthetics/administration & dosage , Consciousness/drug effects , Hypnotics and Sedatives/administration & dosage , Anesthesia/methods , Arterial Pressure/drug effects , Consciousness Monitors , Heart Rate/drug effects , Intermittent Positive-Pressure Ventilation , Infusions, Intravenous/veterinary , Isoflurane/administration & dosage , Ketamine/administration & dosage , Lidocaine/administration & dosage , Midazolam/administration & dosage , Monitoring, Intraoperative/veterinary , Reproducibility of Results , Time Factors , Xylazine/administration & dosage
20.
Rev. chil. cardiol ; 34(2): 100-105, 2015. ilus, tab
Article in Spanish | LILACS | ID: lil-762610

ABSTRACT

Introducción: El efecto de prostanoides inhalatorios sobre la función auricular derecha (AD) en hipertensión arterial idiopática (HAP) no ha sido estudiado. Objetivo: Evaluar cambios agudos en la función AD y función diastólica del ventrículo derecho en pacientes con HAP post uso de Iloprost inhalatorio. Métodos: Se incluyeron pacientes con HAP sin uso previo de prostanoides. Se realizó un ecocardiograma transtorácico basal y 30 min posterior a la inhalación de iloprost. Se midió dimensión AD, relación E/e' y strain de la AD por speckle tracking, registrando la onda negativa de contracción auricular (SaAD) y la onda positiva de la fase de reservorio (SsAD). Se midió el tiempo de inicio de la fase de reservorio AD durante el sístole ventricular. Resultados: Se estudiaron 16 pacientes (15 mujeres), con edad promedio 44 ± 7,8 años. Post Iloprost disminuyó el volumen AD (basal: 140ml, post Iloprost: 109 ml; p 0,008) y las presiones de llenado (E/e’ basal: 13, post Iloprost: 9,8; p 0,028). No se registraron diferencias en el SaAD (basal: -8,4%, post Iloprost: -8,5%; p 0,834). El SsAD fue mayor post Iloprost (basal: 8,6%, post Iloprost: 11,7%; p 0,002) iniciándose antes durante el sístole ventricular (basal: 445ms, post Iloprost: 368ms; p 0,001). Conclusión: Con Iloprost inhalatorio en pacientes con HAP se observa una reducción aguda en el tamaño de la AD y en las presiones de llenado del VD. La deformación durante la fase de reservorio de la AD aumenta y se inicia significativamente antes. Esto sugiere que el Iloprost podría mejorar en forma aguda el trabajo mecánico de la AD en paciente con HAP.


Background: The effects of inhaled prostanoids on right atrial (RA) function in patients with Pulmonary Arterial Hypertension (PAH) have not been studied. We evaluated acute changes in RA function and right ventricular diastolic function after inhaled iloprost. Methods: We included PAH patients without prior prostanoid treatment. A surface echocardiogram was performed at baseline and 30 minutes after iloprost inhalation. Measurements included RA dimensions, right E/e’ ratio and RA strain by speckle tracking, registering a RA contraction wave (RASa) and RA reservoir wave (RASs). RA time to peak of deformation during the reservoir phase was also measured. Results: We included 16 patients (15 females, aged 44±7.8 years. Post iloprost there was a reduction in RA volume (baseline: 140ml, post iloprost: 109ml; p 0.008) and right ventricular filling pressure (baseline E/e’: 13, post iloprost: 9.8; p 0.028). There was no difference in the magnitude of the RASa wave (baseline: -8.4%, post iloprost: -8.5%; p 0.834). The RASs wave was larger post iloprost (baseline: 8.6%, post iloprost: 11.7%; p 0.002), and began earlier (baseline RA time to peak of deformation during reservoir phase: 445ms, post iloprost: 368ms; p 0.001). Conclusion: Inhaled iloprost acutely reduces RA size and right ventricular filling pressure in patients with HAP It also significantly increases the magnitude of RA systolic deformation as well as making it occur earlier in RA filling phase. This suggests that iloprost might improve RA mechanical performance.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Atrial Function, Right/drug effects , Iloprost/administration & dosage , Hypertension, Pulmonary/drug therapy , Vasodilator Agents/administration & dosage , Administration, Inhalation , Echocardiography , Cross-Sectional Studies , Arterial Pressure/drug effects , Hypertension, Pulmonary/physiopathology
SELECTION OF CITATIONS
SEARCH DETAIL