目的：总结吻合器痔上黏膜环切术（PPH）治疗痔病的经验。探讨该术式的有关问题，以便提高疗效。方法：回顾性分析了2001～2006年8月收治痔病541例，其中PPH术42例的临床资料。本组均为Ⅲ度或Ⅳ度痔。局部合并症共22例次：血栓外痔愈合后遗留皮赘14例，肛裂2例。有关全身合并症：前列腺增生7例，慢性泌尿系统感染1例。结果:42例中，35例术后2～5天出院，6例自愿留院到7天，1例慢性尿路感染者术后2～7天多次便血，再次手术后28日痊愈出院。随访13～24个月：32例恢复满意，10例有肛门包块感及包块排粪时轻度脱出，其中3例经进一步处理缓解，另7例观察治疗。结论:(1)PPH手术简单易行，疼痛轻，住院时间短，效果好。(2)为了提高效果术中应注意：①禁忌症为单个痔块脱出和肛管皮肤不平滑并纤维化的Ⅳ度病变者外。我们还发现慢性泌尿系统感染未彻底治愈者也应视为相对禁忌。明显前列腺增生者也应慎重。②术中按经典PPH手术的要求进行操作，扩肛器插入前后，不宜扩肛和下牵痔块。③个别巨大痔块及皮赘性痔块（tag）宜先行切除，再行本术。④重度脱出者，黏膜切除应宽大，必要时切除部分肛垫。
ObjectiveTo summarize the research progression of Doppler-guided hemorrhoidal artery ligation in the treatment of hemorrhoids. MethodsThe related literatures in recent years were reviewed, and to investigate the operation principle, operation process, the indications and effects, and existing problems of Doppler-guided hemorrhoidal artery ligation. ResultsThe surgical principle of Doppler-guided hemorrhoidal artery ligation make use of Doppler ultrasound looking for hemorrhoidal artery, and ligation it directly.It's best indication is Ⅱ or Ⅲ degree hemorrhoids or mixed hemorrhoid with grade Ⅰ or Ⅲ mainly, especially for bleeding hemorrhoids disease curative effect is better.This surgical method has lots of advantages, such as less invasive, quick recovery, and low incidence of complications.But it is no significant treatment effect for the external hemorrhoids, therefore, the procedure does not apply to external hemo-rrhoids and mixed hemorrhoids dominated by external hemorrhoids. ConclusionsDoppler-guided hemorrhoidal artery ligation has the advantage of minimally invasive, it is a safe and effective treatment for Ⅱ and Ⅲ degree internal hemorr-hoids or Ⅱ and Ⅲ degree mixed hemorrhoids dominated by internal hemorrhoids.