Errey B B, Edwards I S
Fertil Steril. 1986 Jun;45(6):843-6. doi: 10.1016/s0015-0282(16)49404-5.
Leaving open the testicular end of vas at vasectomy could reduce symptoms of epididymal congestion and improve the success rate of vasovasostomy but might have the disadvantage of increasing the incidence of painful sperm granulomas and spontaneous recanalization. In 4330 open-ended vasectomies the rate of epididymal congestion was significantly less than in 3867 standard vasectomies. The rate of painful sperm granulomas was not increased: it was significantly reduced. Spontaneous recanalization was rare in both groups. Whether or not open-ended vasectomy improves the success rate of vasovasostomy, it represents an improvement in technique because it reduces the rate of complications after vasectomy. Closure of the sheath over the prostatic end of vas is essential if recanalization is to be prevented.
输精管结扎术中保留输精管的睾丸端开放，可减轻附睾淤积症状并提高输精管吻合术的成功率，但可能存在增加疼痛性精子肉芽肿发生率和自发再通的缺点。在4330例开放端输精管结扎术中，附睾淤积发生率显著低于3867例标准输精管结扎术。疼痛性精子肉芽肿的发生率并未增加，反而显著降低。两组中自发再通均少见。无论开放端输精管结扎术是否能提高输精管吻合术的成功率，它都代表了一种技术改进，因为它降低了输精管结扎术后的并发症发生率。若要防止再通，输精管前列腺端鞘膜的闭合至关重要。
