Yau K I, Miyasaka K
Department of Pediatrics, College of Medicine, National Taiwan University, Taipei, R.O.C.
J Formos Med Assoc. 1990 Apr;89(4):305-9.
Advances in intensive care medicine has made us more depend on infusion pumps to deliver accurate amounts of fluids to sick newborns, children and adults. When infusing rapid-acting critical drugs to patients, it is important not only to deliver accurate fluid-volume amounts over a specified time, but also to deliver the fluid at a constant rate with minimal fluctuation. The accuracy of drop delivery in four infusion pumps (IVAC 530, IVAC 560, IMED 922 and IMED 960) at different infusion rates were examined in a laboratory setting by using a photoelectric sensor and a computer. When it was not in its cassette-filling period, the IMED 960 was the most accurate at delivering fluid-drops, with a coefficient of variance (CV) of less than 10% at each flow rate. Yet, like other piston-cylinder cassette pumps, its cassette filling time and stabilizing period after cassette filling were longer at lower flow rates. Both the IVAC 530 and the IMED 922 delivered fluids irregularly with large coefficients of variance (CVs). IVAC 560 had the best results for consistency of drop-delivery over a 4-hour period.
重症监护医学的进展使我们更加依赖输液泵来向患病的新生儿、儿童和成人输送精确数量的液体。当给患者输注速效关键药物时，不仅要在规定时间内输送精确的液体量，而且要以恒定速率输送液体，波动最小。在实验室环境中，通过使用光电传感器和计算机，对四种输液泵（IVAC 530、IVAC 560、IMED 922和IMED 960）在不同输液速率下的滴注准确性进行了检查。当IMED 960不在其药盒填充期时，它在输送液滴方面最准确，在每个流速下的变异系数（CV）小于10%。然而，与其他活塞-气缸药盒泵一样，在较低流速下，其药盒填充时间和药盒填充后的稳定期更长。IVAC 530和IMED 922输送液体都不规则，变异系数（CVs）很大。IVAC 560在4小时内的滴注一致性方面效果最佳。
