Yazigi A, Madi-Jebara S, Haddad F, Hayek G, Jawish D
Anesthesia and Intensive Care Department, Hotel-Dieu de France Hospital, Saint-Joseph University, Beirut, Lebanon.
Acta Anaesthesiol Scand. 2002 Feb;46(2):173-5. doi: 10.1034/j.1399-6576.2002.460208.x.
Radial arterial pressure underestimates the pressure in the aorta in several clinical situations. A central-to-radial pressure gradient was attributed to intense vasodilation. The aim of this study was to evaluate the accuracy of radial pressure monitoring during controlled hypotension achieved with profound arterial vasodilation.
Ten patients with ASA physical status I and II undergoing maxillofacial surgery under general anesthesia were enrolled in this prospective study. Radial and femoral arteries were cannulated and connected to a pressure monitoring system. Controlled hypotension was achieved with an infusion of nicardipine titrated to maintain MAP between 50 and 60 mmHg. Simultaneous radial and femoral systolic, mean and diastolic arterial pressures were recorded before, during and after controlled hypotension. Results were expressed as mean +/- SD. Concomitant radial and femoral pressures were compared by a paired Student's test, P < 0.05 being significant.
In all, 150 sets of arterial pressures measurement were obtained. There were no statistically significant differences between radial and femoral arterial pressures measured before, during or after controlled hypotension.
Radial arterial pressure is an accurate measure of central arterial pressure during controlled hypotension achieved with arterial vasodilation.
在几种临床情况下，桡动脉压会低估主动脉压力。中心至桡动脉的压力梯度归因于强烈的血管舒张。本研究的目的是评估在通过深度动脉血管舒张实现控制性低血压期间桡动脉压监测的准确性。
本前瞻性研究纳入了10例美国麻醉医师协会（ASA）身体状况为I级和II级、在全身麻醉下接受颌面外科手术的患者。将桡动脉和股动脉插管并连接至压力监测系统。通过输注硝苯地平进行控制性低血压，滴定剂量以维持平均动脉压（MAP）在50至60 mmHg之间。在控制性低血压之前、期间和之后记录桡动脉和股动脉同时的收缩压、平均压和舒张压。结果以平均值±标准差表示。通过配对t检验比较同时的桡动脉和股动脉压力，P<0.05具有统计学意义。
总共获得了150组动脉压测量值。在控制性低血压之前、期间或之后测量的桡动脉和股动脉压力之间无统计学显著差异。
在通过动脉血管舒张实现控制性低血压期间，桡动脉压是中心动脉压的准确测量指标。
