| 释义 |
portacaval, a. Surg.|pɔətəˈkeɪvəl|
Also portocaval, and with hyphen.
[f. portal a. (+ -o) + cava + -al.]
Applied to an anastomosis between the portal vein and one of the venæ cavæ, esp. an artificial one made so that blood in the former bypasses the liver.
1945Ann. Surg. CXXII. 488 Every one of the ten cases of portacaval shunts..went through a successful postoperative convalescence. 1958A. H. Hunt Contrib. Study Portal Hypertension xii. 99 The history of the modern operative treatment of portal hypertension begins with Ecle who suggested in 1877 that his portacaval anastomosis applied to human beings would provide the correct treatment for portal stasis. 1961Lancet 19 Aug. 389/2 Portocaval anastomosis sometimes offers a way out of this quandary. 1968Passmore & Robson Compan. Med. Stud. I. xxx. 47/1 The tributaries of the portal vein anastomose in certain sites with adjacent caval veins which return blood to the heart through either the superior or the inferior vena cava. Little blood passes through these porto-caval anastomoses in health. 1974Marin & Ostrow in F. P. Brooks Gastrointestinal Pathophysiol. vi. 205 Surgeons have expended much time and effort in attempts to reduce portal hypertension by bypassing the hepatic sinusoidal bed, especially with portocaval shunts. |