Zacharoulis A A, Evans T R, Ziady G M, Coltart D J, Shillingford J P
Br Heart J. 1975 Jan;37(1):20-5. doi: 10.1136/hrt.37.1.20.
Stroke volume was determined from the pulmonary artery pressure record by application of the pulse contour method. Pulmonary artery pressure records were obtained in 17 patients using a high fidelity catheter-tip pressure transducer and simultaneous measurements of cardiac output were obtained from indicator dilution curves. The formula used was SV = KP sa (i plus T s/Td) where Psa is the planimetered area beneath the systolic portion of the pulmonary artery pressure curve. Ts and Td are the durations of systole and diastole, and K is a constant. Stroke volume was altered by isometric handgrip exercise and/or pharmacological agents in 15 patients. Serial measurementswere made in 2 patients in acute pulmonary oedema after myocardial infarction. Comparison of a wide range of values of stroke volume by the pulse contour method with those obtained from dye dilution curves showed a good correlation (r plus 0.97, P smaller than 0.001) regression line y = 1.01 times - 0.47. Measurement of stroke volume from the pulmonary artery pressure contour is a technique of potential value in serial haemodynamic monitoring.
每搏输出量通过应用脉搏轮廓法从肺动脉压力记录中确定。使用高保真导管尖端压力传感器获取了17例患者的肺动脉压力记录，并通过指示剂稀释曲线同时测量了心输出量。所使用的公式为SV = KP sa (i加Ts/Td)，其中Psa是肺动脉压力曲线收缩期部分下方的面积计测量面积。Ts和Td分别为收缩期和舒张期的持续时间，K为常数。15例患者通过等长握力运动和/或药物改变了每搏输出量。对2例心肌梗死后急性肺水肿患者进行了连续测量。通过脉搏轮廓法获得的广泛每搏输出量值与通过染料稀释曲线获得的值进行比较，显示出良好的相关性（r = 0.97，P < 0.001），回归线为y = 1.01x - 0.47。从肺动脉压力轮廓测量每搏输出量是一种在连续血流动力学监测中具有潜在价值的技术。
