StatPal II pH与血气分析系统评估。

StatPal II pH and Blood Gas Analysis System evaluated.

作者信息

Wong R J, Mahoney J J, Harvey J A, Van Kessel A L

机构信息

Stanford University Hospital, Division of Pulmonary and Critical Care Medicine, Department of Pulmonary Physiology, CA 94305.

出版信息

Clin Chem. 1994 Jan;40(1):124-9.

PMID:8287519

Abstract

We evaluated a new portable instrument, the PPG StatPal II pH and Blood Gas Analysis System, designed for "point-of-care" measurements of blood gases and pH. Inaccuracy (% of target value) and imprecision (CV%) were assessed by blood tonometry and comparison with a Corning 178. Within-day results for PCO2 inaccuracy and imprecision ranged from 98.2% to 102.9% and 3.3% to 3.9%, respectively; for PO2, these were 95.5% to 102.3% and 2.3% to 3.0%, respectively. Between-day results for PCO2 inaccuracy and imprecision ranged from 99.2% to 99.3% and from 2.9% to 3.2%, respectively; for PO2, the ranges were 96.2% to 98.2% and 2.6% to 3.0%, respectively. Two PCO2 outliers (in 645 samples = 0.3%) were observed. In general, tonometry recovery, measurement stability, and pH bias results for the StatPal II and Corning 178 were comparable. We conclude that the StatPal II performs within acceptable ranges of inaccuracy and imprecision.

摘要

我们评估了一种新型便携式仪器——PPG StatPal II 血气及pH分析系统，该系统专为“即时检测”血气和pH值而设计。通过血液测压法并与康宁178型仪器进行比较，评估了测量的不准确性（占目标值的百分比）和不精密度（变异系数%）。PCO₂的日内不准确性和不精密度结果分别在98.2%至102.9%和3.3%至3.9%之间；PO₂的日内不准确性和不精密度结果分别在95.5%至102.3%和2.3%至3.0%之间。PCO₂的日间不准确性和不精密度结果分别在99.2%至99.3%和2.9%至3.2%之间；PO₂的日间不准确性和不精密度范围分别为96.2%至98.2%和2.6%至3.0%。观察到两个PCO₂异常值（645个样本中有2个 = 0.3%）。总体而言，StatPal II和康宁178型仪器在测压法恢复、测量稳定性和pH偏差结果方面具有可比性。我们得出结论，StatPal II在可接受的不准确性和不精密度范围内表现良好。