How to Reconstruct Middle Hepatic Vein Branches With Explanted Portal Vein and Inferior Mesenteric Vein Graft: A Case Report.

OBJECTIVE: The middle hepatic vein reconstruction is one of the crucial parts in adult living donor liver transplantation. Numerous techniques had been reported by using cadaveric iliac vessel or synthetic graft. The limitations of reported techniques are availability of the vessel and complication of synthetic graft. We report the technique of using explanted portal vein and inferior mesenteric vein graft in sequential fashion. PATIENTS AND METHODS: The recipient was a 54-year-old man with chronic hepatitis B cirrhosis and multiple hepatocellular carcinomas. He underwent living donor liver transplantation with modified right lobe graft from spouse. The venous drainages of segments 5 and 8 were reconstructed by explanted left portal vein and inferior mesenteric vein from the donor. The operative time was 9 hours 30 minutes. RESULTS: The postoperative course was uneventful. The recipient did not show any signs of small-for-size syndrome such as ascites or hyperbilirubinemia. He recovered well and showed no signs of recurrent disease 1 year after his transplantation. CONCLUSION: The explanted portal vein graft can be used with another autogenous vein graft such as inferior mesenteric vein for reconstruction of all middle hepatic vein branches.

Effects of moderate acute isovolaemic haemodilution on myocardial function in patients undergoing coronary surgery under volatile inhalational anaesthesia.

When myocardial oxygen demand is increased by elevated heart rate in patients undergoing coronary artery surgery under total intravenous anaesthesia, acute isovolaemic haemodilution may be associated with a deterioration of cardiac function. We investigated the effects of acute isovolaemic haemodilution during volatile inhalational anaesthesia. Forty patients undergoing coronary surgery were randomly assigned to two groups according to the rate of atrioventricular pacing (Group 70 at 70.min(-1) and Group 90 at 90.min(-1)). While paced at the fixed heart rate, acute isovolaemic haemodilution was performed before the start of cardiopulmonary bypass. In both groups mean (SD) stroke volume increased with haemodilution (from 65 (9) to 83 (10) ml.min(-1) (p < 0.01) in Group 70 and from 65 (9) to 81 (9) ml.min(-1) (p < 0.01) in Group 90) as a result of a decrease in systemic vascular resistance (from 1175 (231) to 869 (164) dynes.s.cm(-5) (p < 0.01) and from 1060 (185) to 849 (146) dynes.s.cm(-5) (p < 0.01), respectively) and an increase in end-diastolic volume (from 1049 (234) to 1405 (211) ml (p < 0.01) and from 1078 (106) to 1438 (246) ml (p < 0.01), respectively). Left ventricular pressure-derived data remained unchanged with acute isovolaemic haemodilution in both groups.

Continuous cardiac output measurement: arterial pressure analysis versus thermodilution technique during cardiac surgery with cardiopulmonary bypass.

This study compared cardiac output measured with an arterial pressure-based cardiac output measurement system and a thermodilution cardiac output measurement system. We studied 36 patients undergoing cardiac surgery with cardiopulmonary bypass. Simultaneous arterial pressure-based and thermodilution cardiac output measurements were compared before and after cardiopulmonary bypass, and after phenylephrine administration. Bland-Altman analysis showed good overall agreement between the two methods. Bias (limits of agreement) before and after cardiopulmonary bypass were - 0.21 (- 2.97-2.55) lxmin(-1) and 0.01 (- 3.79-3.81) lxmin(-1), respectively. Phenylephrine administration decreased thermodilution cardiac output by a mean (SD) of 11 (16)% and increased arterial pressure-based cardiac output by 55 (34)%. We conclude that arterial pressure-based cardiac output and thermodilution cardiac output measurement systems yield comparable results during cardiac surgery with cardiopulmonary bypass. However, after phenylephrine administration, the two measurement systems provided opposing results.