Reevaluation of limited side-to-side portacaval shunt.
Although the results of limited side-to-side portacaval shunt were better than those of other shunts, postoperative encephalopathy still occurred in 10.2% of the patients. To determine the relationship between the diameter of anastomotic stoma and the development of postoperative encephalopathy, animal experiments and clinical observations were carried out. In 4 of 8 dogs in 3 months after limited side-to-side portacaval shunt and in 6 patients with postoperative encephalopathy, there was significant augmentation of the diameter of anastomotic stoma. To prevent the widening of anastomotic stoma caused by blood flow under high pressure, a limiting ring of 10 mm in diameter was put around the anastomotic site during operation in 21 patients with portal hypertension. Follow-up for 3-15 months (average 6 months) showed that there was no evidence of postoperative encephalopathy and rebleeding. A ring of same kind was put around the dilated anastomotic stoma during exploration in the 6 patients, and all their cerebral symptoms and signs disappeared completely soon after the second operation.
Wang
Y
Y
Department of Surgery, Beijing Friendship Hospital.
Xu
Y D
YD
Du
W
W
Tang
Z C
ZC
D000818:Animals; D004285:Dogs; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006501:Hepatic Encephalopathy / Q000209:etiology / Q000517:prevention & control; D006801:Humans; D006975:Hypertension, Portal / Q000601:surgery*; D011167:Portacaval Shunt, Surgical / Q000009:adverse effects / Q000379:methods