منابع مشابه
Portal vein prostacyclin activity in experimental portal hypertension in rats.
1. Portal hypertension was produced experimentally in rats by partial ligation of the portal vein. 2. One week later portal veins of these animals were shown to release significantly greater amounts of prostacyclin than control animals. 3. It is postulated that if this response occurs in man, local vasodilatation and inhibition of platelet aggregation may be exacerbatory factors in the severity...
متن کاملPortal circulation and portal hypertension.
During the last 25 years, there have been important developments in visualising the portal vein, in examining its contents, and in measuring the pressure of blood flowing within it. Radiologists have set the scene and now is the time of the scanner. These technical advances have been applied to the diagnosis and treatment of patients with portal hypertension, and many ingenious surgical techniq...
متن کاملProtection of estrogen in portal hypertension gastropathy: an experimental model.
CONTEXT Portal hypertension is a complication secondary to cirrhosis that is characterized by increased blood flow and/or vascular resistance in the portal system, causing the appearance of a hyperdynamic collateral circulation. Partial portal vein ligation is an experimental model used in rats to study the pathophysiological mechanisms involved in pre-hepatic portal hypertension. Estrogen E2 i...
متن کاملSURGICAL EXPERIENCE WITH PORTAL HYPERTENSION DUE TO HEPATOPORTAL SCLEROSIS (NONCIRRHOTIC PORTAL FIBROSIS)
Hepatoportal sclerosis or idiopathic portal hypertension has a worldwide distribution with prevalence in developing and temperate countries. Of 64 patients with this disease seen during a twelve year period, 36 underwent splenectomy or a shunt procedure. The indications for surgical intervention were severe hypersplenism and persistent left upper abdominal pain andlorhistory of frequent ep...
متن کاملGastric mucosal resistance to acute injury in experimental portal hypertension.
1. The gastric mucosa of portal hypertensive rats exhibits important microvascular changes and a nitric oxide (NO)-dependent hyperemia. This study analyses whether portal hypertensive mucosa exhibits changes in its ability to withstand aggression. 2. Portal hypertension was induced by partial portal vein ligation (PPVL) or common bile duct ligation (CBDL) and gastric damage was induced by oral ...
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ژورنال
عنوان ژورنال: Annals of Surgery
سال: 1957
ISSN: 0003-4932
DOI: 10.1097/00000658-195710000-00014