Levy R D, Cunningham D, Shapiro L M, Wright C, Mockus L, Fox K M
Br Heart J. 1986 Apr;55(4):336-43. doi: 10.1136/hrt.55.4.336.
A transducer tipped catheter and simple recording system were used for the continuous measurement of ambulatory pulmonary artery pressure. The pulmonary artery pressure was recorded on a miniaturised tape recorder and replayed via an optical writer. Pulmonary arterial systolic and diastolic pressures can be analysed on a beat to beat basis. Continuous ambulatory monitoring was performed for a total 288 hours in 13 patients who were undergoing routine investigation for coronary artery disease. There was less than 1% zero drift and 0.25% linearity error per full scale pressure. The frequency response of the entire system was flat to 8 Hz with a linear phase delay. The transducer tipped catheter and a conventional fluid-filled system were used to measure left ventricular and pulmonary artery end diastolic pressures in eight patients. The correlation between the results obtained by the two methods was excellent. This method could be used at any centre equipped for ambulatory electrocardiographic monitoring.
使用一种带有换能器的导管和简单记录系统来连续测量动态肺动脉压。肺动脉压记录在一台小型磁带录音机上，并通过光学记录仪回放。肺动脉收缩压和舒张压可逐搏进行分析。对13例行冠状动脉疾病常规检查的患者进行了总计288小时的连续动态监测。每满量程压力的零漂移小于1%，线性误差为0.25%。整个系统的频率响应在8Hz以内是平坦的，具有线性相位延迟。使用带有换能器的导管和传统的充液系统测量了8例患者的左心室和肺动脉舒张末期压力。两种方法所获结果之间的相关性极佳。该方法可在任何具备动态心电图监测设备的中心使用。
