Scrotal hypothermia and testicular blood flow in the dog. Absence of thermal regulation.
Two clinically tolerable methods of producing testicular hypothermia have been studied in dogs. Evaporative cooling produced a 3.7 degree fall and ice water a 9.7 degree fall in intratesticular temperatures. Scrotal skin blood flow (mls/100 gm/min) fell from 4.9 +/- 4.6 to 2.3 +/- 1.2 and 1.3 +/- .05 with the two techniques and was associated with increased vascular resistance. In contrast, no significant change was noted in testicular blood flow. These data show that testicular blood flow cannot be altered by clinically tolerable hypothermia.
D000818:Animals; D001833:Body Temperature Regulation; D004285:Dogs; D007036:Hypothermia, Induced; D008297:Male; D012611:Scrotum / Q000502:physiology*; D013091:Spermatogenesis; D013737:Testis / Q000098:blood supply*