Objective : to investigate the effect of pumpless portosystemic bypass in clinical piggyback liver transplantation . methods : after catheterized inferior mesenteric vein , the silastic catheter ( filled with heparin saline ) was connected with the catheterized tube of internal jugular vein or subclavian vein in four piggyback liver transplantation patients . the channel was opened after the portal vein was occluded . the portal vein blood poured into the superior vena cava through the pumpless channel . the changes of mesenteric congestion , portal vein pressure , blood pressure and pulse were observed . results : during the occlusion of portal vein , the portal vein pressure was increased greatly , the intestine was congested and swelled obviously and the blood pressure and pulse fluctuated gently . after the pumpless bypass opened , intestinal congestion and swell were abated markedly , the portal pressure , blood pressure and pulse gradually returned to normal range . conclusions : pumpless portosystemic bypass shows a great effect on clinical piggyback liver transplantation . it is a feasible and economical method 目的探討背駝式原位肝移植術中采用體外門-體靜脈無泵轉(zhuǎn)流的臨床效果.方法4例行背駝式原位肝移植患者,腸系膜下靜脈屬支插管經(jīng)體外硅膠管(充滿肝素鹽水)與頸內(nèi)靜脈或鎖骨下靜脈插管相接,在阻斷門靜脈后開通腸系膜下靜脈插管,門靜脈血從體外無泵轉(zhuǎn)流管流入上腔靜脈,觀察轉(zhuǎn)流前后腸道瘀血、門靜脈壓、血壓、脈搏等變化情況.結(jié)果門靜脈阻斷后腸道明顯瘀血、腫脹,門靜脈壓力明顯升高,血壓、脈搏有不同程度的波動,無泵門靜脈轉(zhuǎn)流開放后,腸道瘀血、腫脹明顯好轉(zhuǎn),門靜脈壓力逐漸恢復正常水平,血壓、脈搏恢復正常.結(jié)論背駝式原位肝移植術中體外門-體靜脈無泵流具有方便、經(jīng)濟、實用等優(yōu)點,具有良好的臨床效果