Braillon A, Calès P, Jirón M I, Lebrec D
Gastroenterol Clin Biol. 1984 Jan;8(1):47-51.
In patients with portal hypertension the azygos system collects the main part of superior portosystemic shunts; accordingly, azygos blood flow might be a reflection of this collateral circulation. Azygos blood flow, estimated by the continuous thermodilution method with a catheter inserted into the azygos arch, was measured in 20 patients with cirrhosis. The variability of baseline measurements was 6.9 +/- 3.0 p. 100 and the reproducibility was 5.7 +/- 5.8 p. 100. In patients with cirrhosis, azygos blood flow ranged from 0.22 to 1.25 l/min (0.64 /+- 0.30 l/min; mean +/- SD) and was significantly higher than in patients without portal hypertension (0.13 +/- 0.04 l/min). In this series of patients, azygos blood flow was significantly correlated with the hepatic venous pressure gradient but neither with hepatic blood flow nor with cardiac output. This study shows that azygos blood flow may be estimated with the continuous thermodilution method and that azygos blood flow is approximately six times higher in cirrhotic patients than in controls. This result suggests that blood flow through the superior portosystemic shunts is very high.
在门静脉高压患者中，奇静脉系统收集了大部分的上腔静脉-门静脉分流；因此，奇静脉血流可能反映了这种侧支循环。通过将导管插入奇静脉弓采用连续热稀释法对20例肝硬化患者的奇静脉血流进行了测量。基线测量的变异性为6.9±3.0%，可重复性为5.7±5.8%。肝硬化患者的奇静脉血流范围为0.22至1.25升/分钟（0.64±0.30升/分钟；平均值±标准差），显著高于无门静脉高压的患者（0.13±0.04升/分钟）。在这组患者中，奇静脉血流与肝静脉压力梯度显著相关，但与肝血流量和心输出量均无相关性。本研究表明，采用连续热稀释法可估算奇静脉血流，且肝硬化患者的奇静脉血流比对照组高约6倍。这一结果提示，通过上腔静脉-门静脉分流的血流量非常高。
