Newton Haley S, Niles Scott D, Ploessl James, Richenbacher Wayne
University of Iowa Hospitals and Clinics, Iowa City 52242, USA.
J Extra Corpor Technol. 2007 Mar;39(1):39-42.
The development of electrostatic potentials generated during cardiopulmonary bypass (CPB) procedures using polyvinylchloride (PVC) tubing in conjunction with roller pumps has been previously documented. The resulting damage from the electrostatic discharge (ESD) has been reported to affect gas transfer devices, but details of potential damage to electronic components commonly used during extracorporeal circulation have not been similarly described. The purpose of this study was to measure the ability of a triboelectric potential to be generated from a primed, circulating, adult CPB pump before the initiation of CPB. Two identical adult CPB circuits were assembled: one incorporating a roller pump and the second incorporating a centrifugal pump mechanism. Primed pumps were circulated (1-6 LPM), and evidence of generated triboelectric potentials was evaluated using a digital multimeter (Fluke 8062 A). The ESD generated from an adult CPB circuit using a roller head configuration elicited a charge in excess of 600 DC V. An identical circuit constructed with a centrifugal pump mechanism did not produce any measurable charge. Sensitive electrical components in the CPB hardware platform may be damaged by ESD potential spikes of this magnitude. Preventative measures, such as circuit charge dissipation, may reduce the potential for such damage when using PVC tubing.
先前已有文献记载，在使用聚氯乙烯（PVC）管材与滚压泵相结合的体外循环（CPB）手术过程中会产生静电势。据报道，静电放电（ESD）造成的损害会影响气体传输装置，但对于体外循环期间常用电子元件潜在损害的细节尚未有类似描述。本研究的目的是在CPB开始前，测量已预充、正在循环的成人CPB泵产生摩擦电势的能力。组装了两个相同的成人CPB回路：一个包含滚压泵，另一个包含离心泵机制。对预充后的泵进行循环（1 - 6升/分钟），并使用数字万用表（福禄克8062 A）评估产生摩擦电势的证据。使用滚压头配置的成人CPB回路产生的ESD引发了超过600直流伏的电荷。采用离心泵机制构建的相同回路未产生任何可测量的电荷。CPB硬件平台中的敏感电子元件可能会被这种量级的ESD电势尖峰损坏。当使用PVC管材时，诸如回路电荷消散等预防措施可能会降低此类损害的可能性。
