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1.
Rev. esp. enferm. dig ; 111(9): 662-666, sept. 2019. tab
Artigo em Espanhol | IBECS | ID: ibc-190348

RESUMO

Introducción: la relación entre la gastrectomía vertical laparoscópica (GVL) y el reflujo gastroesofágico (RGE) es aún controvertida, por lo que su investigación tiene gran interés para llegar a conclusiones definitivas. Nuestro objetivo es determinar si la GVL modifica el RGE pH-métrico de los pacientes obesos y, en caso de que así sea, analizar algunos factores que pudieran explicarlo. Pacientes y métodos: incluimos los primeros 26 pacientes que recibieron una GVL en nuestro centro. Se realizaron un tránsito baritado, una pH-metría ambulatoria de 24 horas y una manometría intraluminal esofágica (MIE) con cuatro canales previamente y al año de la operación. Resultados: de los datos pH-métricos, el índice de DeMeester mostró un aumento significativo (p = 0.028) tras la intervención, mientras que los demás parámetros fueron similares. Por otra parte, se observó que el 50% de los pacientes con RGE pH-métrico preoperatorio mostraron tasas normales al año de la operación. En la MIE objetivamos que la presión del esfínter esofágico inferior (EEI) disminuyó, así como la amplitud media de las ondas en el tercio distal esofágico (p = 0,007 y p = 0,025, respectivamente). En el estudio radiológico la tasa de hernias de hiato "de novo" fue del 36,4%. Conclusión: la GVL determina un aumento leve del RGE, probablemente relacionado con la aparición de hernias de hiato así como con una disminución de la presión del EEI y de la capacidad de barrido esofágico. Sin embargo, no debe contraindicarse la GVL a pacientes con RGE preoperatorio pH-métrico pues puede negativizarse tras la operación


Introduction: the relationship between laparoscopic vertical gastrectomy (LVG) and gastroesophageal reflux (GER) is still controversial. Therefore, its study is of great interest in order to obtain definitive conclusions. The goal of the study was to establish whether LVG modifies pH-metric GER in obese patients and to analyze the associated factors. Patients and methods: the first 26 patients who underwent LVG in our institution were enrolled in the study. A barium swallow, 24-hour ambulatory pH-metry and four-channel intraluminal esophageal manometry (IEM) were all performed before and one year after surgery. Results: among the pH-metric data, there was a significant increase in the DeMeester index after the procedure (p = 0.028), while other parameters remained unchanged. Furthermore, 50% of patients with preoperative pH-metric GER had normal values at one year after surgery. IEM showed a decrease in lower esophageal sphincter (LES) pressure and in the mean wave amplitude at the distal third of the esophagus (p = 0.007 and p = 0.025, respectively). The rate of newly-developed hiatal hernias in the radiographic study was 36.4%. Conclusion: LVG mildly increases GER, which is likely related to the development of hiatal hernias and a decrease in LES pressure and esophageal sweep. However, LVG should not be contraindicated for patients with preoperative pH-metric GER, as this may clear after the procedure


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Refluxo Gastroesofágico/cirurgia , Gastrectomia/estatística & dados numéricos , Laparoscopia/estatística & dados numéricos , Obesidade Mórbida/cirurgia , Refluxo Gastroesofágico/fisiopatologia , Alcalinização/análise , Concentração de Íons de Hidrogênio , Manometria/métodos , Estudos Prospectivos
2.
Apunts, Med. esport ; 48(179): 83-88, jul.-sept. 2013. graf
Artigo em Espanhol | IBECS | ID: ibc-116982

RESUMO

Introducción: Valores bajos del pH salival están fuertemente relacionados con un mayor riesgo de caries dental. El objetivo del presente estudio fue valorar los cambios en los valores del pH salival tras la realización de ejercicio anaeróbico máximo, su posible relación con el valor de lactato sanguíneo, y el análisis del estado de la cavidad bucal en atletas de disciplinas de carácter anaeróbico. Material y métodos: Estudio de naturaleza experimental, con la participación de 6 sujetos (3 hombres, 3 mujeres; edad 21,67 ± 5,32 años; peso 61 ± 7,18 kg; altura 1,70 ± 0,05 m), atletas de nivel alto, no de élite. Los sujetos realizaron 2 sesiones (S1, S2) de ejercicio anaeróbico láctico con los mismos criterios (máximo número de series de 300 m en pista al 90% de la intensidad máxima individual). Se tomaron muestras de saliva total, no estimulada, en 3 momentos: a) justo antes del ejercicio; b) inmediatamente después de cada serie, y c transcurridos 30 min después del ejercicio, para la medición del pH salival. También se tomaron muestras de lactato sanguíneo inmediatamente después de cada serie. Resultados: La variación del pH salival basal respecto al pH de la última serie es estadísticamente significativa en ambas sesiones (S1: p = 0,028; S2: p = 0,044). Conclusiones: Los datos obtenidos sugieren una respuesta alcalinizante de las glándulas salivales durante la realización de ejercicio anaeróbico láctico. Sería interesante estudiar las modificaciones cualitativas en la composición de la saliva durante la realización de ejercicio anaeróbico y la prolongación del efecto de dichas modificaciones en el tiempo (AU)


Introduction: A low salivary pH is strongly associated with the incidence of dental caries. The aim of this study was to determine if high intensity anaerobic exercise could affect the salivary pH response, and to determine if there is correlation between salivary pH and blood lactate values. Additionally, we also aim to determine the state of oral health in anaerobic events athletes. Material and methods: Six healthy and physically active subjects, high-level athletes (3 men and 3 women; age 21.67 ± 5.32 years; weight 61 ± 7.18 kg; height 1.70 ± 0.05 m) performed a clinical trial consisting of two sessions of anaerobic lactic acid-producing exercise. Each session consisted of running the maximum number of sets of 300 meters at 90% of the individual maximal intensity. Non-stimulated whole saliva samples were collected from all subjects at three different times: (I) before the exercise; (II) immediately after each 300 m set, and (III) 30 minutes after the exercise. Blood lactate was measured after each 300 m set to assess the anaerobic character of the test. Results: Salivary pH increased significantly after the exercise in both sessions of the study (S1: P = 0.028; S2: P = 0.044). Conclusion: Our results suggest that performing anaerobic lactic acid-producing exercise has an effect on saliva alkalinization. More research is needed to assess the qualitative modifications in saliva due to performing anaerobic exercise and their effect on dental health (AU)


Assuntos
Humanos , Masculino , Feminino , Exercício Físico/fisiologia , Saliva/química , Concentração de Íons de Hidrogênio , Ácido Láctico/análise , Cárie Dentária/epidemiologia , Alcalinização/análise
3.
Med. oral patol. oral cir. bucal (Internet) ; 16(7): 1014-1016, .nov. 2011.
Artigo em Inglês | IBECS | ID: ibc-93503

RESUMO

Objectives: The aim of this study was to evaluate microleakage of white mineral trioxide aggregate (WMTA) after its exposure to a range of alkaline environments during hydration.Study Design: Seventy single-rooted teeth were divided into 4 experimental and 2 control groups. All the teeth were instrumented, and their apices were resected. Root-end cavities were filled with WMTA in the experimental groups. In the control groups, root-end cavities were not filled. Root-end fillings were exposed to alkaline environments with pH values of 7.4, 8.4, 9.4, or 10.4 for 3 days. Microleakage was evaluated by bovine serum albumin.Evaluations were carried out at 24-hour intervals for 80 days. Data were analyzed by one-way analysis of variance and a post hoc Tukey test at the 0.05 level of confidence.Results: The number of days (mean ± standard deviation) needed for color change at pH values of 7.4, 8.4, 9.4, and10.4 were 78.53 ± 5.68, 80.00 ± 0.00, 68.93 ± 19.00, and 34.46 ± 12.73, respectively. The time needed for leakageto occur was significantly shorter in samples stored at a pH value of 10.4 (P<0.001).Conclusions: Within the limits of this study, it can be concluded that pH values greater than 9.4 may jeopardizethe sealing ability of WMTA during hydration (AU)


Assuntos
Humanos , Alcalinização/análise , Selantes de Fossas e Fissuras/farmacocinética , Fissuras Dentárias/terapia , Resinas Sintéticas/farmacocinética
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