Chen P P, Short T G, Leung D H, Oh T E
Department of Anaesthesia and Intensive Care, Faculty of Medicine, Chinese University of Hong Kong.
Anaesth Intensive Care. 1992 Nov;20(4):497-500. doi: 10.1177/0310057X9202000419.
The 'Hemocue' device for rapid estimation of haemoglobin concentration was evaluated in a clinical setting. Repeatable accuracy of capillary, venous and arterial samples was examined and then compared with standard laboratory venous haemoglobin estimates using a 'Coulter JT' analyser in 42 patients. The mean values for haemoglobin (g/l) and coefficient of variation were capillary 108.2 (8.0); venous 104.9 (2.2); arterial 105.9 (2.0); and laboratory venous 104.6 (1.3). Although the mean haemoglobin values were similar, capillary samples were significantly less repeatable than venous or arterial samples (Pitman test, P < 0.001). Comparison of variance between the laboratory sample and each sampling technique demonstrated that capillary samples were significantly more variable than venous or arterial samples. Peripheral skin temperature did not influence the accuracy of capillary samples. Hemocue estimations of venous samples were found to be as accurate as laboratory estimations. The lack of repeatable accuracy of capillary estimations was sufficiently large that their use cannot be recommended in clinical practice.
在临床环境中对用于快速估算血红蛋白浓度的“Hemocue”设备进行了评估。检测了毛细血管血、静脉血和动脉血样本的可重复性准确性，然后在42例患者中使用“库尔特JT”分析仪将其与标准实验室静脉血红蛋白估算值进行比较。血红蛋白（g/l）的平均值和变异系数分别为：毛细血管血108.2（8.0）；静脉血104.9（2.2）；动脉血105.9（2.0）；实验室静脉血104.6（1.3）。尽管血红蛋白的平均值相似，但毛细血管血样本的可重复性明显低于静脉血或动脉血样本（皮特曼检验，P<0.001）。实验室样本与每种采样技术之间的方差比较表明，毛细血管血样本的变异性明显大于静脉血或动脉血样本。外周皮肤温度不影响毛细血管血样本的准确性。发现静脉血样本的Hemocue估算值与实验室估算值一样准确。毛细血管血估算值缺乏足够的可重复性准确性，以至于在临床实践中不推荐使用。
