Philip J H, Philip B K
Med Instrum. 1985 Sep-Oct;19(5):232-5.
The IVAC Variable Pressure Volumetric Pump, Model 560, was evaluated for hydrostatic and central venous pressure (CVP) measurement. In bench tests, 4 per cent of IVAC systems failed a +/- 2 mm Hg accuracy test. When measurements were inaccurate, errors were small (SD = 0.49 mm Hg). In simultaneous clinical measurements with a standard electronic transducer system, the correlation coefficient between the IVAC and transducer measurements was 0.95. A potential drawback of the IVAC 560 for CVP measurement is the lack of waveform display. The IVAC system is simple to operate and less expensive per use than the standard electronic system.
对型号为560的IVAC可变压力容积泵进行了用于测量静水压力和中心静脉压（CVP）的评估。在台架试验中，4%的IVAC系统未通过±2毫米汞柱的精度测试。当测量不准确时，误差较小（标准差=0.49毫米汞柱）。在与标准电子换能器系统同时进行的临床测量中，IVAC与换能器测量值之间的相关系数为0.95。IVAC 560用于CVP测量的一个潜在缺点是缺乏波形显示。IVAC系统操作简单，每次使用的成本比标准电子系统低。
