RESUMO
Objetivo: Estudiar los factores de riesgo cardiovascular del personal docente y administrativo de la Universidad Nacional de Salta interesados en participar en un ensayo clínico para evaluar el efecto de un suplemento dietario naringina sobre los niveles de colesterolemia. Metodología: Se realizó una convocatoria por correo electrónico. Se realizó una revisión clínica, antropométrica, impedancia bioeléctrica y estudio bioquímico en dos etapas para preseleccionar la muestra del ensayo clínico con criterios de inclusión y exclusión pre-establecidos. Los resultados se analizaron estadísticamente con diferencia de medias, chi2 y prueba de Fisher. Resultados: Se incluyeron 38 mujeres y 16 varones de 40 a 60 años. 50 por ciento refirió tener antecedentes familiares de hipercolesterolemia. 61 por ciento de los participantes no realizó actividad física. 16% y el 93% respectivamente presentó patologías asociadas e Índice de cintura cadera (ICC) en riesgo y 69% índice de masa corporal (IMC) superior a lo normal. 32 mujeres y 12 hombres presentaron grasa intrabdominal en exceso. En la segunda etapa (n=45), 15% presentó valores de colesterol superiores a 240 mg/dl (alto riesgo) y 55 por ciento hasta 219 mg/dl (bajo riesgo). 62 por ciento HDL colesterol
Assuntos
Humanos , Doenças Cardiovasculares , Colesterol , Grau de Risco , Universidades , ArgentinaRESUMO
We examined the magnitude of the hypoxic metabolic response in golden-mantled ground squirrels to determine whether the shift in thermoregulatory set point (T(set)) and subsequent fall in body temperature (T(b)) and metabolic rate observed in small mammals were greater in a species that routinely experiences hypoxic burrows and hibernates. We measured the effects of changing ambient temperature (T(a); 6--29 degrees C) on metabolism (O(2) consumption and CO(2) production), T(b), ventilation, and heart rate in normoxia and hypoxia (7% O(2)). The magnitude of the hypoxia-induced falls in T(b) and metabolism of the squirrels was larger than that of other rodents. Metabolic rate was not simply suppressed but was regulated to assist the initial fall in T(b) and then acted to slow this fall and stabilize T(b) at a new, lower level. When T(a) was reduced during 7% O(2), animals were able to maintain or elevate their metabolic rates, suggesting that O(2) was not limiting. The slope of the relationship between temperature-corrected O(2) consumption and T(a) extrapolated to a T(set) in hypoxia equals the actual T(b). The data suggest that T(set) was proportionately related to T(a) in hypoxia and that there was a shift from increasing ventilation to increasing O(2) extraction as the primary strategy employed to meet increasing metabolic demands under hypoxia. The animals were neither hypothermic nor hypometabolic, as T(b) and metabolic rate appeared to be tightly regulated at new but lower levels as a result of a coordinated hypoxic metabolic response.
Assuntos
Regulação da Temperatura Corporal/fisiologia , Metabolismo Energético , Hipóxia , Consumo de Oxigênio/fisiologia , Sciuridae/fisiologia , Animais , Dióxido de Carbono/análise , Eletromiografia , Frequência Cardíaca , Masculino , Mamíferos , Músculo Esquelético/inervação , Músculo Esquelético/fisiologia , Valores de Referência , Respiração , Fatores de TempoRESUMO
Dra, Zimmer describes in this work the evolution of general anaesthesia for surgeries, quoting the recorded invention patents, since the 1st one performed in France - an ether anaesthesia - in 1846, 2 years after Wells had used nitrous oxide as gas for a surgery (december 1844).