[Prognostic value on recovery rates for the application of sperm preparation techniques and their evaluation in sperm function]. / Valor pronóstico en las tasas de recuperación para la aplicación de técnicas de preparación seminal y su evaluación en la función espermática.

OBJECTIVE: To evaluate sperm recovery and total sperm motility in three different sperm preparation techniques (density gradient, simple washing and swim-up). PATIENTS AND METHODS: A total of 290 subjects were randomly evaluated from November 2001 to March 2003. The density gradient method required Isolate (upper and lower layers). Centrifugation was performed at 400 g for 10 minutes and evaluation was done using the Makler counting chamber. The simple washing method included the use of HTF-M complemented with 7.5% of SSS, with centrifugation at 250 g, obtaining at the end 0.5 mL of the sperm sample. The swim-up method required HTF-M complemented with 7.5% of SSS, with an incubation period of 60 minutes at 37 degrees C. RESULTS: The demographic characteristics evaluated through their standard error, 95% ICC, and 50th percentile were similar. The application of multiple comparison tests and analysis of variance showed significant differences between the sperm preparations before and after capacitation. It was observed a superior recovery rate with the density gradient and swim-up methods; nevertheless, the samples used for the simple washing method showed a diminished sperm recovery from the original sample. CONCLUSIONS: Sperm preparation techniques have become very useful in male infertility treatments allowing higher sperm recovery and motility rates. The seminal parameters evaluated from the original sperm sample will determine the best sperm preparation technique in those patients who require it.

Estado actual del taponamiento uterino con sonda de Foley en sangrado incoercible / Present states of uterine tamponade with Foley catheter in incoercible bleeding Hospitalary experience in Mexico

Dentro de la obstetricia, el taponamiento uterino se ha usado en el control de la hemorragia, sin embargo, el manejo puede ser difícil recurriendo a manejo radical como la histerectomía. Presentamos cuatro casos de sangrado profusos durante la realización de legrados los cuales no se controlaron con manejo médico convencional y fueron exitosamente tratados con el uso de la sonda de foley la cuál es dejada en cavidad por 12 a 24 horas. No existieron complicaciones atribuibles al método. El taponamiento uterino con sonda de foley es una opción terapéutica útil previo a la realización de trapia radical o ablativa

Esternosis aórtica y embarazo: presentación de un caso y revisión fisiopatológica / Aortic stenosis and pregnancy: pressentation of casse, and physiopathologic review

Se presenta un caso de una paciente de 31 años de edad con el diagnóstico de estenosis aórtica, prolapso de la válvula mitral, insuficiencia aórtica y embarazo. Se revisa la literatura haciendo un análisis del manejo de este tipo de padecimiento.