Apparent fertility of human spermatozoa from the caput epididymidis.

摘要: Fifty-one patients with obstructive azoospermia caused by blockage at the caput epididymidis have been followed for 4 years after undergoing "specific tubule" vasoepididymostomy, bypassing corpus and cauda. The patency rate was 73%, pregnancy 31%. There no correlation between sperm count rate, but there a strong motility. With less than 20% motility, only 15% of became pregnant, greater motility postoperatively, 58% pregnant. If wife over 30 old, 21% got under 30, 67% "Redo" cases were just as likely to succeed "first-time" attempts. In "patent" cases, 43% spermatozoa that never reached or traversed cauda produced pregnancy. Spermatozoa from proximal 33% whereas distal 50% rate. One-half pregnancies occurred more 2 postoperatively.