The incidence and prevalence of PsA in this Latin American country was similar to that reported in other studies from Europe and the USA.

The renal function, including sodium excretion rates, were studied in 27 patients with early essential hypertension, before and during angiotensin infusions. The patients had a preparatory period of salt loading for four days taking a supplement of 7 g of NaCl. Determinations were made during two 30-minute periods before the angiotensin and for two 30-minute periods afterward. Arterial blood pressure was increased in all 27 patients and renal plasma flow decreased in 25. The glomerular filtration rate changes were not statistically significant, showing some increase in 15 and a decrease in 11 patients. When the group was divided into those in which there was a decrease in sodium excretion (11 patients), and those in which there was an increase in sodium excretion (16 patients), with angiotensin infusion, a correlation with the control blood pressure was evident. The patients in whom an increase occurred had a control mean blood pressure greater than 136 mm Hg, and those exhibiting a decrease of sodium excretion, a blood pressure less than 136 mm Hg. Salt excretion did not correlate with the increment in blood pressure or renal resistance changes. The minor changes in glomerular filtration of sodium of the two groups could not explain the different excretory patterns which are attributed to an alteration of the tubular transport of sodium.

Objetivo: Describir las complicaciones maternas de la cesárea en gestantes a término en periodo expulsivo en un hospital general. Material y métodos: Estudio descriptivo, observacional, retrospectivo, tipo serie de casos, realizado en el Hospital Nacional Cayetano Heredia entre el 1 de enero de 2011 hasta el 31 diciembre de 2012. Se incluyeron 67 gestantes a término operadas en periodo expulsivo. Se revisaron las historias clínicas de las pacientes, se registraron las características clínicas y las complicaciones maternas. Resultados: En el periodo de estudio se realizaron 4 218 cesáreas, siendo el 1,84% hechas en periodo expulsivo. En general, 59/ 67 (88,1%) presentaron algún tipo de complicación. Se observaron 8 casos de hipotonía uterina (11,9%) y 2 (2,9%) de atonía. En 5 (7,4%) pacientes ocurrieron desgarros de segmento adyacente a la histerotomía, siendo 2 de ellos asociados a compromiso de cuerpo uterino y vagina, y 4 (5,9%) casos a laceración de arteria uterina, uno fue bilateral. No se produjeron lesiones en tracto urinario ni digestivo y tampoco hubo necesidad de reintervención quirúrgica. Cuatro pacientes presentaron hemorragia puerperal, dos asociados a hipotonía uterina post cesárea. En 56 (83,5%) casos ocurrió anemia post operatoria. Hubo 1 (1,5%) caso de endometritis, 3 (4,5%) infecciones de herida operatoria. Conclusiones: La cesárea realizada en período expulsivo ocasiona complicaciones frecuentes, algunas muy severas.1fe

No abstract