Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 62
Filtrar
1.
Curr Probl Diagn Radiol ; 46(3): 177-180, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28162863

RESUMO

Preprocedural evaluation of patients in an interventional radiology (IR) clinic is a complex synthesis of physical examination and imaging findings, and as IR transitions to an independent clinical specialty, such evaluations will become an increasingly critical component of a successful IR practice and quality patient care. Prior research suggests that preprocedural evaluations increased patient's perceived quality of care and may improve procedural technical success rates. Appropriate documentation of a preprocedural evaluation in the medical record is also paramount for an interventional radiologist to add value and function as an effective member of a larger IR service and multidisciplinary health care team. The purpose of this study is to examine the quality of radiology resident notes for patients seen in an outpatient IR clinic at a single academic medical center before and after the adoption of clinic note template with reminders to include platelet count, international normalized ratio, glomerular filtration rate, and plan for periprocedural coagulation status. Before adoption of the template, platelet count, international normalized ratio, glomerular filtration rate and an appropriate plan for periprocedural coagulation status were documented in 72%, 82%, 42%, and 33% of patients, respectively. After adoption of the template, appropriate documentation of platelet count, international normalized ratio, and glomerular filtration rate increased to 96%, and appropriate plan for periprocedural coagulation status was documented in 83% of patients. Patient evaluation and clinical documentation skills may not be adequately practiced during radiology residency, and tools such as templates may help increase documentation quality by radiology residents.


Assuntos
Assistência Ambulatorial/normas , Documentação/normas , Radiologia Intervencionista/educação , Radiologia Intervencionista/normas , Competência Clínica , Educação de Pós-Graduação em Medicina , Humanos , Indicadores de Qualidade em Assistência à Saúde , Encaminhamento e Consulta , Estudos Retrospectivos
2.
Dig Dis Sci ; 47(4): 831-6, 2002 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-11991618

RESUMO

The role of H. pylori infection in increasing the risk of ischemic heart diseases (IHD) is still debated. We determined serologically the prevalence of overall H. pylori and CagA-positive H. pylori infection in 63 consecutive patients with IHD and 189 gender- and age-matched controls. We also determined in patients the influence of the infection and the CagA serological status on the results of an exercise ECG test and other parameters considered possible variables that may enhance the risk of IHD. The prevalence of H. pylori infection in patients and controls was 79.3% and 73.0%, respectively (P = 0.403) and that of CagA-positive H. pylori infection was 69.8% and 42.3%, respectively (P = 0.0002). The scores of the ECG S-T segment and T-wave abnormalities in the course of an exercise ECG in uninfected patients and in patients infected by CagA-negative and CagA-positive H. pylori strains were (mean +/- SD): 1.59 +/- 0.67, 1.92 +/- 0.64, and 2.19 +/- 0.70, respectively; (P = 0.011, 95% confidence limits of difference 0.15-1.07, CagA-positive infected vs uninfected patients). There was no intergroup difference in the levels of peripheral white blood cells, glucose, cholesterol, triglycerides, creatinine, and systolic and diastolic pressure. In conclusion, genetic heterogeneity of H. pylori could possibly explain some conflicting results concerning the association of H. pylori infection with IHD. Coronary vessels of IHD patients infected by CagA-positive H. pylori strains may be damaged more severely than those of uninfected patients.


Assuntos
Antígenos de Bactérias , Proteínas de Bactérias/metabolismo , Infecções por Helicobacter/complicações , Helicobacter pylori/metabolismo , Isquemia Miocárdica/microbiologia , Adulto , Idoso , Eletrocardiografia , Teste de Esforço , Infecções por Helicobacter/epidemiologia , Helicobacter pylori/genética , Humanos , Pessoa de Meia-Idade , Isquemia Miocárdica/etiologia , Isquemia Miocárdica/fisiopatologia , Prevalência , Fatores de Risco
3.
Contraception ; 64(3): 145-8, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11704092

RESUMO

Increases in blood pressure and weight are consequences of increased fluid retention following oral contraceptives administration. Hypertension and weight increase are particularly frequent in women over 35 years of age. The aim of the present study was to evaluate the clinical and hormonal effects of a new extra-low dose oral contraceptive [15 microg ethinyl estradiol (EE) and 60 microg gestodene (GSD)] on the renin-aldosterone system in a group of women aged 35-39 years treated for 3 months compared with a formulation containing the same hormones at a higher dose. Eighteen healthy women, age 35-39 years, were divided into two groups. The first group (10 women) used Arianna, Schering, 15 microg EE/60 microg GSD (EE15/GSD60); the second group (8 women) used Fedra, Schering, 20 microg EE/75 microg GSD (EE20/GSD75). Blood samples were obtained before the study and after 3 months of contraceptive use for assay of renin and aldosterone. Blood pressure was also measured on both occasions. No significant changes in plasma renin activity (PRA) or plasma concentrations of aldosterone were observed between the two groups after 3 months of contraceptive use. The mean increase in body weight after 3 months of contraceptive use was 350 +/- 100 g for EE20/GSD75 and 300 +/- 50 g for EE15/GSD60. There was a mean increase of 4 mm Hg for systolic pressure and 2 mm Hg for diastolic pressure in women on EE20/GSD75 and corresponding increases of 3 and 2 mm Hg in women on EE15/GSD60. The changes were not significant in any case. The results of the present study show that the formulations were well tolerated and provided good control of the menstrual cycle in all 18 women. The contraceptive formulations EE20/GSD75 and EE15/GSD60 have no clinical impact on blood pressure, PRA, or aldosterone in this age group.


Assuntos
Aldosterona/sangue , Pressão Sanguínea/efeitos dos fármacos , Peso Corporal/efeitos dos fármacos , Anticoncepcionais Orais/administração & dosagem , Anticoncepcionais Orais/efeitos adversos , Avaliação de Medicamentos , Etinilestradiol/administração & dosagem , Etinilestradiol/efeitos adversos , Hipertensão/induzido quimicamente , Norpregnenos/administração & dosagem , Norpregnenos/efeitos adversos , Renina/sangue , Adulto , Feminino , Humanos
4.
Can J Cardiol ; 17(5): 571-7, 2001 May.
Artigo em Inglês | MEDLINE | ID: mdl-11381279

RESUMO

BACKGROUND: Hypertension is a major cardiovascular risk factor in the development of coronary artery disease (CAD); therefore, evaluating the presence of CAD is a primary clinical goal. However, the noninvasive tests that are commonly used have poor diagnostic specificity, particularly in patients with left ventricular hypertrophy. OBJECTIVES: To assess the prognostic value of dipyridamole stress echocardiography (DET) for ischemic events in a subset of patients with hypertension with left ventricular hypertrophy, chest pain and resting electrocardiographic repolarization abnormalities. PATIENTS AND METHODS: Eighty-two patients (48 men and 34 women; average age 65+/-7.2 years with left ventricular hypertrophy documented echocardiographically (left ventricular mass index greater than 50 g/h(2.7)), and resting ST segment shift of 0.1 mV or more from baseline at 80 ms after J point in at least two contiguous leads, were submitted to DET according to high-dosage protocol and coadministered with atropine. RESULTS: The follow-up period was 25.11+/-8.3 months. The stress test produced positive results in 30 patients (36.5%); 16 (53%) and three (5%) cardiac events occurred in positive and negative stress test groups, respectively. At multivariate analysis, only positive DET response (P=0.000002), left ventricular mass index (P=0.028) and a family history of CAD (P=0.037) were independent predictors. The two-year event-free survival rates were 95% and 47% (log-rank 21.093, P=0.00001) for negative and positive stress test results, respectively. CONCLUSIONS: DET is a useful tool in the prognostic assessment of coronary events in this particular subgroup of patients with hypertension.


Assuntos
Dor no Peito/complicações , Doença das Coronárias/diagnóstico , Dipiridamol , Ecocardiografia/métodos , Hipertensão/complicações , Hipertrofia Ventricular Esquerda/complicações , Idoso , Doença das Coronárias/etiologia , Eletrocardiografia , Técnicas Eletrofisiológicas Cardíacas , Teste de Esforço/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Medição de Risco
5.
Int J Cardiol ; 75(2-3): 227-32, 2000 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-11077138

RESUMO

Atrial fibrillation is associated with a prothrombotic state and endothelial dysfunction. To understand whether the prothrombotic state was correlated with endothelial dysfunction and whether the latter was related to atrial dimension (endocardial damage), we studied systemic hemocoagulative activity and markers of endothelial dysfunction in 45 patients with chronic nonrheumatic atrial fibrillation and in 35 controls. We assessed fibrinogen, antithrombin III, protein C, markers of platelet activation (platelet factor 4 and beta-thromboglobulin) as markers of fibrinolysis, and D-dimer, tissue plasminogen activator, plasminogen activator inhibitor, von Willebrand's factor and soluble thrombomodulin as endothelial dysfunction. Plasma fibrinogen (P<0. 005), platelet factor 4 (P<0.001), thromboglobulin (P<0.001), D-dimer (P<0.03), tissue plasminogen activator (P<0.006), plasminogen activator inhibitor (P<0.04) and both von Willebrand's factor (P<0.0001) and soluble thrombomodulin (P<0.03) were significantly higher in the patients than in the controls. Positive significant linear correlations were found between fibrinogen and markers of endothelial dysfunction and left atrial volume and fibrinogen or markers of endothelial dysfunction. These findings confirm that chronic nonrheumatic atrial fibrillation is associated with a prothrombotic state but also suggest that there is a correlation between endothelial dysfunction, coagulation factors and left atrial dimension.


Assuntos
Fibrilação Atrial/fisiopatologia , Endotélio Vascular , Átrios do Coração/patologia , Idoso , Fibrilação Atrial/sangue , Fibrilação Atrial/patologia , Biomarcadores , Doença Crônica , Feminino , Fibrinogênio/análise , Hemodinâmica , Humanos , Masculino , Pessoa de Meia-Idade , Inativadores de Plasminogênio/análise , Ativação Plaquetária , Fator de von Willebrand/análise
6.
Am J Hypertens ; 13(6 Pt 1): 593-600, 2000 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10912740

RESUMO

To assess whether aerobic exercise training is an effective and an alternative method to control blood pressure (BP) in hypertension, 32 uncomplicated, never treated patients suffering from mild-to-moderate essential arterial hypertension (EAH) were included in an aerobic exercise training program using a regular standardized cycle ergometer exercise for 3 months. In all EAH patients, before and after the exercise training period, ambulatory BP monitoring (ABPM) was performed and several metabolic variables were assessed. Before exercise, in 20 EAH patients, a 48-h ABPM showed a normal day-night rhythm, with nocturnal BP decrease, according to a dipper-type hypertension, whereas in 12 EAH patients 48-h ABPM profile indicated a nondipper-type hypertension. After exercise, EAH dippers presented a significant decrease in the daytime systolic and diastolic BP, whereas EAH nondippers did not show any change in daytime and nighttime systolic and diastolic BP. Our study confirms the controversy about the postulated BP lowering effect of dynamic exercise in EAH patients, in the sense that only EAH dipper patients seem to obtain a beneficial diurnal lowering BP effect deriving from exercise, possibly through a reduction in sympathetic tone. On the contrary, physical activity seems to fail in reducing diurnal and nocturnal BP values in EAH nondippers, suggesting that in nondipper-type hypertension, other "masking" endogenous or exogenous factors could interfere with and prevail over the adrenergic-vagal balance that modulates the day-night BP synchronism.


Assuntos
Pressão Sanguínea/fisiologia , Terapia por Exercício , Hipertensão/reabilitação , Aptidão Física/fisiologia , Adulto , Monitorização Ambulatorial da Pressão Arterial , Ritmo Circadiano/fisiologia , Teste de Esforço , Feminino , Humanos , Hipertensão/fisiopatologia , Masculino , Índice de Gravidade de Doença , Falha de Tratamento
7.
J Cardiovasc Pharmacol ; 35(6): 926-31, 2000 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10836728

RESUMO

Recent studies showed that in diabetic hypertensive patients, administration of angiotensin-converting enzyme (ACE)-inhibitors or calcium antagonists can effectively lower blood pressure (BP) and prevent diabetes-related cardiovascular complications with no adverse metabolic effects. We sought to assess the antihypertensive and metabolic effects of the new dihydropyridine calcium antagonist manidipine (M) in patients with diabetes mellitus and essential hypertension as compared with the ACE inhibitor enalapril (E). After 3 weeks of placebo, 101 (62 men; age range, 34-72 years) hypertensives with type II diabetes mellitus were randomized to M 10-20 mg or E 10-20 mg, od, for 24 weeks. At the end of the placebo period and the active-treatment phase, BP was measured with a mercury sphygmomanometer (office, O) and over the 24 h by ambulatory (A) monitoring. ABP recordings were analyzed to obtain 24-h, day (6 a.m. to midnight), and night (midnight to 6 a.m.) average systolic (S) and diastolic (D) BP and heart rate (HR) values. Homogeneity of the antihypertensive effect over the 24 h was assessed by the smoothness index [SI: i.e., the ratio between the average of the 24 hourly BP changes after treatment and the corresponding standard deviation (the higher the SI, the more uniform is the BP control by treatment over the 24 h]. The O SBP and DBP were significantly (p < 0.01) and similarly reduced by M (16 +/- 10 and 13 +/- 6 mm Hg, n = 49) and E (15 +/- 10 and 13 +/- 6 mm Hg, n = 45). The percentage of patients whose O DBP was reduced < or = 85 mm Hg (i.e., the value indicated to be the optimal DBP goal in diabetic hypertensives) was similar for M (37%) and E (40%). The reduction of 24-h BP also was similar between M (n = 38) and E (n = 38) for both drugs (systolic, 6 +/- 11 and 8 +/- 10 mm Hg; diastolic, 5 +/- 8 and 5 +/- 7; NS, M vs. E). The antihypertensive effect was distributed in a similar homogeneous fashion throughout the dosing interval, as shown by the similar SI values (M, 0.6 +/- 1.2 for SBP and 0.6 +/- 0.9 for DBP; E, 0.6 +/- 0.8 for SBP and 0.5 +/- 0.7 for DBP; NS, M vs. E). O and A HR were unchanged by either treatment. Markers of glucose and lipid metabolism and renal function were not significantly modified by treatment both with M and with E. In the diabetic hypertensives, M was as effective and metabolically neutral as the ACE-inhibitor E.


Assuntos
Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Anti-Hipertensivos/uso terapêutico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Di-Hidropiridinas/uso terapêutico , Enalapril/uso terapêutico , Hipertensão/tratamento farmacológico , Adulto , Idoso , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Pressão Sanguínea/efeitos dos fármacos , Monitorização Ambulatorial da Pressão Arterial , Colesterol/metabolismo , LDL-Colesterol/efeitos dos fármacos , LDL-Colesterol/metabolismo , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/fisiopatologia , Diástole , Método Duplo-Cego , Hemoglobinas Glicadas/efeitos dos fármacos , Hemoglobinas Glicadas/metabolismo , Frequência Cardíaca/efeitos dos fármacos , Humanos , Hipertensão/complicações , Hipertensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Nitrobenzenos , Piperazinas , Sístole , Resultado do Tratamento , Triglicerídeos/metabolismo , Ácido Úrico/metabolismo
8.
J Hypertens ; 15(12 Pt 1): 1511-8, 1997 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-9431859

RESUMO

OBJECTIVES: To compare 24 h ambulatory blood pressure and trough office blood pressure lowerings after 8 weeks of therapy with 75 mg irbesartan once a day, 150 mg irbesartan once a day , and 75 mg irbesartan twice a day versus placebo; and to assess safety and tolerability of irbesartan therapy. DESIGN: Multicenter, double-blind, randomized, placebo-controlled trial. SETTING: Sixteen centers in Italy. PATIENTS: Caucasian patients (n = 215) aged > or = 18 years with seated diastolic blood pressure 95-110 mmHg and ambulatory diastolic blood pressure (ADBP) > or = 85 mmHg. PRIMARY OUTCOME: Mean 24 h ADBP after 8 weeks of irbesartan therapy. RESULTS: Mean changes (value before treatment minus value after treatment) in ADBP for placebo, 75 mg irbesartan once a day, 150 mg irbesartan once a day, and 75 mg irbesartan twice a day were -0.2, -5.4, -7.2, and -7.2 mmHg, respectively; respective changes in ambulatory systolic blood pressure were +1.6, -8.3, -10.5, and -9.7 mmHg. All irbesartan regimens reduced trough office seated diastolic blood pressure and seated systolic blood pressure after 2 and 8 weeks of treatment (all P < 0.01, versus placebo except for seated systolic blood pressure in patients in the 75 mg irbesartan once a day group). Trough: peak ratios were > or = 55% with 150 mg irbesartan once a day. Percentages of patients whose blood pressures were normalized with 150 mg irbesartan once a day (45%) and 75 mg irbesartan twice a day (47%) were greater than those with placebo (14%, P < 0.01) and with 75 mg irbesartan once a day (19%, NS, versus placebo). Adverse events with irbesartan were similar to those with placebo. CONCLUSIONS: All irbesartan regimens significantly reduced mean 24 h ADBP and ambulatory systolic blood pressure, and were well tolerated. Administration of 150 mg irbesartan once a day provided significant reduction of blood pressure for 24 h, equivalent to that obtained with the same daily dose divided into two separate administrations.


Assuntos
Anti-Hipertensivos/administração & dosagem , Compostos de Bifenilo/administração & dosagem , Determinação da Pressão Arterial/métodos , Pressão Sanguínea/efeitos dos fármacos , Ritmo Circadiano/fisiologia , Monitorização Ambulatorial , Tetrazóis/administração & dosagem , Idoso , Anti-Hipertensivos/sangue , Anti-Hipertensivos/uso terapêutico , Compostos de Bifenilo/sangue , Compostos de Bifenilo/uso terapêutico , Método Duplo-Cego , Esquema de Medicação , Feminino , Humanos , Irbesartana , Masculino , Pessoa de Meia-Idade , Tetrazóis/sangue , Tetrazóis/uso terapêutico , Resultado do Tratamento
9.
G Ital Cardiol ; 26(5): 519-25, 1996 May.
Artigo em Italiano | MEDLINE | ID: mdl-8767775

RESUMO

BACKGROUNDS: Various cardiac abnormalities have been described in patients with Behçet's disease. The number of reports remains small, but increasing awareness have widened the spectrum of manifestations. We report our evaluation of cardiac involvement in 15 patients affected by Behçet's disease, diagnosed according to the criteria for the International Study Group for Behçet's Disease. PATIENTS AND METHODS: All the patients have been examined by a clinical, biochemical and instrumental point of view. Six patients resulted to be affected by heart diseases, in particular by mitral valve prolapse; moreover one of them presented an unexpected dilatative cardiomyopathy. CONCLUSIONS: The authors affirm that the pathological heart features are not so uncommon as previously reported in literature, emphasizing the necessity of a constant evaluation for the cardiovascular system also in the asymptomatic patients.


Assuntos
Síndrome de Behçet/complicações , Cardiopatias/etiologia , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
10.
Arch Gerontol Geriatr ; 22 Suppl 1: 113-8, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-18653017

RESUMO

In elderly hypertensive patients (HP) blood pressure (BP) and heart rate (HR) control and variability seem to be affected by a reduced baroreceptor sensitivity, or autonomic dysfunction, and concomitant cardiovascular diseases. Therefore, the aim of present study was to investigate the circadian profiles and variability of BP and HR, by means of a 24-hour ambulatory BP monitoring, in a group of 22 elderly HP compared with those of a group of 24 middle aged patients with essential hypertension. Many differences in BP and HR profile and variability were observed in elderly HP when compared to those of middle aged HP, such as significantly lower diurnal diastolic BP values, lower nocturnal BP fall, lower diurnal HR but with a greater diurnal variability. Conversely, in middle aged HP a significantly greater diurnal systolic BP variability was observed, and a significant correlation was found between hourly diastolic BP and hourly HR values, while in elderly HP this correlation was not detectable. The changes in BP and HR profile and variability observed in elderly HP may play a role as risk factors for cardiovascular complications and indicate a dysfunction of autonomic and nonautonomic factors in BP control.

12.
Miner Electrolyte Metab ; 21(1-3): 77-81, 1995.
Artigo em Inglês | MEDLINE | ID: mdl-7565468

RESUMO

Primary hyperparathyroidism (HPTH) is frequently associated with hypertension. To date, the relationship between these two conditions is still not clear. We have studied 34 consecutive patients with primary HPTH due to a parathyroid adenoma. The diagnosis was later surgically confirmed in 32 cases. Ten of thirty-four HPTH patients were hypertensive. Before adenomectomy (PTHX) and 1-2 months after PTHX, we measured the following parameters in all patients: circulating levels of total and ionized Ca, intact immunoreactive parathormone (iPTH) (1-84), plasma renin activity (PRA), aldosterone, and daily total urinary catecholamine excretion. Moreover, 10 hypertensive HPTH patients, 10 normotensive HPTH patients, compared to 10 to 10 sex- and age-matched healthy normotensive subjects, underwent an acute norepinephrine test to assess vascular reactivity to a pressor agent. Before PTHX, no significant difference was observed between normotensive and hypertensive patients in all the above-mentioned variables, except for PRA and plasma aldosterone levels which were higher in hypertensive patients. Furthermore, the pressor response to the norepinephrine test was significantly greater in hypertensive HPTH patients than in the other 2 groups. After PTXH, serum Ca and intact iPHT (1-84) levels were reduced to normal values in all patients, while blood pressure, PRA and plasma aldosterone levels became normal in 8 of 10 hypertensive patients. The pressor response to the norepinephrine test was similar in the 2 groups. These results are consistent with the hypothesis of a direct effect of PTH on renin secretion which could contribute to the pathogenesis of hypertension and to the vessels sensitization to pressor agents.


Assuntos
Adenoma/fisiopatologia , Hiperparatireoidismo/fisiopatologia , Hipertensão/fisiopatologia , Neoplasias das Paratireoides/fisiopatologia , Sistema Renina-Angiotensina/fisiologia , Adenoma/complicações , Idoso , Estudos de Casos e Controles , Feminino , Humanos , Hiperparatireoidismo/etiologia , Hipertensão/complicações , Masculino , Pessoa de Meia-Idade , Neoplasias das Paratireoides/complicações , Valores de Referência
14.
Minerva Cardioangiol ; 41(9): 387-95, 1993 Sep.
Artigo em Italiano | MEDLINE | ID: mdl-8259235

RESUMO

The aim of this study was to evaluate age, plasmatic renin activity (PRA), plasma aldosterone levels and the total quantity of urinary catecholamines (TOT. UR. CAT.) in a large population of out-patients suffering from essential arterial hypertension (EAH). A total of 986 patients were examined (540 women and 426 men aged between 15 and 87 years) suffering form slight or moderate EAH (WHO stage 1-2). After a wash-out period of two weeks, systolic and diastolic arterial pressure was measured together with heart rate in clino- and orthostatism. Blood samples were collected to determine PRA and plasma aldosterone, and lastly a 24-hour urine collection was made to measure the total quantity of catecholamines. It emerged that there was a significant increase in systolic pressure, whereas heart rate and PRA diminished significantly when correlated with age; diastolic pressure was also considerably lower, but did not reach statistical significance. Moreover, it was found that there was a significant positive correlation between PRA and TOT. UR. CAT., whereas no correlation was found between age and plasma aldosterone and between blood pressure and the various endocrine parameters examined. These data confirm the changes in the biological, hemodynamic and endocrine profiles observed in elderly hypertensive patients in comparison to young hypertensive patients, and suggests that age may be an important predictive factor of the activity of both the renin-angiotensin and sympathetic nervous system which appear to be closely connected and gradually attenuated by age.


Assuntos
Envelhecimento , Hipertensão/fisiopatologia , Sistema Renina-Angiotensina/fisiologia , Sistema Nervoso Simpático/fisiopatologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Aldosterona/sangue , Pressão Sanguínea , Catecolaminas/urina , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Renina/sangue
15.
Minerva Urol Nefrol ; 45(2): 37-45, 1993 Jun.
Artigo em Italiano | MEDLINE | ID: mdl-8235930

RESUMO

The following parameters were studied in a group of patients suffering from essential arterial hypertension complicated by chronic renal insufficiency (CRI), mean age = 64.31 +/- 1.84, with creatinine clearance (CrC) ranging between 30 and 60 ml/min: blood pressure (systolic and diastolic arterial pressure), heart rate, plasmatic renin activity (PRA), plasma levels of aldosterone (ALDO) both in clino- and orthostatism, as well as some metabolic parameters. All parameters were compared with those in a group of age- and sex-matched patients with slight or moderate essential arterial hypertension. Before starting the study all patients completed a wash-out period of one week to annual the effects of other drugs which might interfere with the RAA system. PRA levels were within the norm, whereas plasma levels of ALDO were high both in clino- and orthostatism. ALDO levels were also found to be inversely correlated with those of CrC. From these data it emerges that hyperaldosteronism, as observed in these patients with CRI, is a relatively reliable marker of the extent of CRI and may occur independently of the activation of the RAA system, given that other factors, such as orthostatic stimulation, alterations in the acid-base equilibrium, and the degree of aldosterone hepatic and urinary clearance, contribute to its pathogenesis.


Assuntos
Aldosterona/fisiologia , Hiperaldosteronismo/etiologia , Hipertensão/fisiopatologia , Falência Renal Crônica/fisiopatologia , Hormônio Adrenocorticotrópico/sangue , Idoso , Pressão Sanguínea/fisiologia , Cátions/metabolismo , Creatinina/sangue , Feminino , Humanos , Hidrocortisona/sangue , Hipertensão/complicações , Falência Renal Crônica/complicações , Masculino , Pessoa de Meia-Idade , Sistema Renina-Angiotensina/fisiologia , Ácido Úrico/sangue
16.
Kyobu Geka ; 45(12): 1052-6, 1992 Nov.
Artigo em Japonês | MEDLINE | ID: mdl-1405121

RESUMO

The continuous warm blood cardioplegia (CWBC) was used for myocardial protection during aortic cross clamping in two cases of repeat aortic valve operations with good results. Case 1: A 46-year-old man, who underwent an aortic valve replacement because of the rheumatic aortic regurgitation (AR) in 1978, have suffered from orthopnea due to para-prosthetic valvular regurgitation since 1983. He was revealed to have bi-ventricular hypertrophy with myocardial damage on ECG, EF 0.27 on UCG, PCWP 20 mmHg and severe AR on cardiac catheterization. Case 2: A 43-year-old man, who had an aortic valvuloplasty for the non-rheumatic incompetency in 1981, have had a recurrent regurgitation, resulting in left ventricular hypertrophy accompanied by chest pain. Both cases were reoperated upon, having aortic valve replacement with mechanical prosthetic valves through the re-median sternotomy, utilizing CWBC with good recovery. CWBC provides an ideal circumstances for myocardial oxygen utilization during aortic cross clamping and moreover a benefit that needs not the wide dissection of the heart in a redo case because it has no need of topical cooling and ventricular defibrillation following aortic declamping. In conclusion, CWBC is very useful in a repeat aortic valve surgery.


Assuntos
Insuficiência da Valva Aórtica/cirurgia , Parada Cardíaca Induzida/métodos , Próteses Valvulares Cardíacas , Cardiopatia Reumática/cirurgia , Adulto , Valva Aórtica/cirurgia , Insuficiência da Valva Aórtica/fisiopatologia , Sangue , Soluções Cardioplégicas/uso terapêutico , Eletrocardiografia , Humanos , Masculino , Pessoa de Meia-Idade , Reoperação , Cardiopatia Reumática/fisiopatologia
17.
Kyobu Geka ; 45(7): 619-22, 1992 Jul.
Artigo em Japonês | MEDLINE | ID: mdl-1619826

RESUMO

A 65-year-old man with chronic type B dissecting aortic aneurysm, complicated by variant from of angina pectoris without any coronary artery obstructed disease on preoperative angiogram was operated upon through left posterolateral thoracotomy under the left heart bypass with Bio-pump system using preoperative Ca antagonists and intraoperative nitroglycerin infusion. Shortly before the end of operation the patient suddenly developed shock status definitely due to coronary artery spasm, associated with ST-elevation in II, III, aVF and bradycardia, then ventricular tachycardia, finally cardiac arrest. The patient was resuscitated by cardiac massage and administration of nifedipine and nitroglycerin. Such attacks repeated five times at ten or twenty minutes intervals. The coronary artery spasm could be successfully suppressed with the additive use of noradrenaline infusion. The patient had no attacks at all postoperatively and was discharged with good success. This case suggests that the prevention of intraoperative coronary artery spasm is essential, but if it occurs, additive use of noradrenaline infusion is effective for the cessation of coronary artery spasm.


Assuntos
Aneurisma Aórtico/cirurgia , Dissecção Aórtica/cirurgia , Vasoespasmo Coronário/terapia , Complicações Intraoperatórias/terapia , Idoso , Prótese Vascular , Vasoespasmo Coronário/etiologia , Massagem Cardíaca , Humanos , Infusões Intravenosas , Masculino , Nifedipino/administração & dosagem , Nitroglicerina/administração & dosagem , Norepinefrina/administração & dosagem
18.
Kyobu Geka ; 45(8 Suppl): 677-81, 1992 Jul.
Artigo em Japonês | MEDLINE | ID: mdl-1405143

RESUMO

Comparative studies of the changes in left ventricular (LV) function immediately after aortocoronary bypass graftings (CABG) and early postoperative results were carried out in two groups of patients with severe LV dysfunction (ejection fraction less than 0.4), which consisted of 9 patients received internal mammary artery grafts (IMAG) to at least LAD and 14 with saphenous vein grafts (SVG) only. The utilization of IMAG was limited to the patients with stable preoperative hemodynamics, whereas SVGs were used even in the emergency CABG. Free flow of IMAG measured during operation was 55.7 +/- 25.5 ml/min, which was significantly lower than that (83.5 +/- 27.3) of SVG to LAD. Cardiac index, LV stroke volume index and LV stroke work index immediately after surgery were sufficiently maintained and recovered almost similarly in both groups. Postoperative peak CK-MB (19.7 +/- 10.4 IU/L) in IMAG group was significantly lower than that (23.9 +/- 10.7) in SVG group. There was no significant difference between the two groups in the incidences of postoperative IABP and noradrenaline dependence. There were two hospital deaths in SVG group, whereas no hospital death was experienced in IMAG group. These results indicate that an application of IMAG to LAD in the patients with severe LV dysfunction surely induces satisfactory recovery of hemodynamics immediately after CABG as well as SVG, provided that use of IMAG is limited to the patients with stable preoperative hemodynamics.


Assuntos
Ponte de Artéria Coronária , Doença das Coronárias/cirurgia , Artéria Torácica Interna/transplante , Veia Safena/transplante , Função Ventricular Esquerda , Idoso , Ponte de Artéria Coronária/métodos , Doença das Coronárias/fisiopatologia , Estudos de Avaliação como Assunto , Humanos , Pessoa de Meia-Idade , Período Pós-Operatório
19.
Minerva Cardioangiol ; 40(5): 169-78, 1992 May.
Artigo em Italiano | MEDLINE | ID: mdl-1528503

RESUMO

As is well known, genetic factors play a decisive role in the pathogenesis of essential hypertension (EH), even if they are closely related to environmental factors; it is therefore not possible to quantify with any degree of certainty the role and importance of each in the onset of hypertensive disease. The aim of the present study was to ascertain the presence of hypertensive 1st and 2nd degree ascendant, collaterals and descendants in a group of 355 out-patients with EH (167 males, 188 females; mean age: 52.9 +/- 0.7 years) using an anamnestic analysis. The results of this study confirmed the high prevalence of the hereditary component in EH: familial hypertension was found in 60.6% of the group. From a detailed analysis of the group, with regard to hypertensive ascendant, the hereditary transmission of EH by the mother was significantly higher than that by the father, both the parents and the forefathers, even if it is worth pointing out that the penetration of the genetic character was not always sex-related and was equally distributed between male and female descendents. In addition, it was observed that patients with a familial pattern of hypertension in common with collateral relatives showed significantly enhanced levels of systolic and diastolic pressure in relation to those with another hereditary component. These findings serve to underline the importance of evaluating the effective incidence of EH with regard to an entire family nucleus and not only in individual terms, in order to identify the various means of genetic transmission and possible interactions with environmental factors.


Assuntos
Hipertensão/genética , Feminino , Humanos , Hipertensão/epidemiologia , Masculino , Pessoa de Meia-Idade , Fatores Sexuais
20.
Minerva Cardioangiol ; 40(3): 57-64, 1992 Mar.
Artigo em Italiano | MEDLINE | ID: mdl-1630676

RESUMO

The aim of the present study was to evaluate a number of parameters in a group of patients with essential hypertension and then compare the results with those in a group of healthy normotensive subjects. One hundred and fifty-six patients with essential hypertension (EH) in the non-complicated form (73 males, 83) females; mean age: 54.8 +/- 0.9 years) were selected and compared with 150 normotensive subjects matched for age and sex. After a 2-week period of wash-out during which patients followed a diet with normal sodium and calorie content, body mass index, systolic and diastolic arterial pressure (AP), mean arterial pressure (MAP), heart rate in clino- and orthostatism were measured and blood was collected to assay glycemia, total cholesterolemia, LDL and HDL cholesterolemia and triglycerides. In the group of patients suffering from EH all the above parameters were found to be significantly higher than in normotensive control subjects. In particular, in the hypertensive population the prevalence of obesity was 21.3%, hyperglycemia 26.9%, hypercholesterolemia 65.1% and smoking 36.4%. When the possible relation between one or more risk factors and AP values was assessed, it was found that in hypertensive patients the presence of hyperglycemia alone or in association with other metabolic disorders led to the highest MAP findings. Moreover, having studied the correlation rate of the various parameters, it was seen that in both the hypertensive and normotensive populations systolic AP measured in clinostatism positively correlated with glycemia, total cholesterolemia, and age, whereas correlations were not found between clinostatic diastolic AP and the above parameters.(ABSTRACT TRUNCATED AT 250 WORDS)


Assuntos
Hipertensão/sangue , Análise de Variância , Glicemia/análise , Colesterol/sangue , Feminino , Hemodinâmica , Humanos , Hipertensão/epidemiologia , Hipertensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Postura/fisiologia , Triglicerídeos/sangue , Ácido Úrico/sangue
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...