Krenzischek D A, Tanseco F V
Johns Hopkins Hospital, Baltimore, Md, USA.
Am J Crit Care. 1996 Nov;5(6):427-32.
The purpose of this study was to examine the effects of variations in technique on measurements of hemoglobin level done at the bedside and to compare these results with laboratory measurements of hemoglobin.
In accordance with hospital policy, procedure, and protocol, various techniques were used to obtain samples of capillary and venous blood and of blood from arterial and central venous catheters. Levels of hemoglobin were measured at the bedside and in the laboratory, and the results were compared.
The Johns Hopkins Hospital adult postanesthesia care unit.
A total of 187 blood samples were obtained from 62 adults who had undergone general surgery. Group I comprised 20 subjects with capillary and venous blood samples. Group II comprised 21 subjects with arterial blood samples. Group III comprised 21 subjects with central venous blood samples.
The results showed that the amount of blood to be discarded before obtaining samples of arterial and central venous blood need not be any larger than double the dead space of the catheter, and that shaking the blood sample for 10 seconds was sufficient to mix the sample before measurement of hemoglobin levels. Results of bedside and laboratory measurements of hemoglobin level were comparable.
Bedside measurement of hemoglobin increases efficiency in patient care, decreases risk of blood-transmitted infection for staff, and decreases cost to the patient. However, the persons who perform the assay must be responsible in adhering to the standard of practice to minimize errors in the measurements.
本研究旨在探讨不同技术对床边血红蛋白水平测量结果的影响，并将这些结果与实验室血红蛋白测量结果进行比较。
根据医院政策、程序和方案，采用多种技术获取毛细血管血、静脉血以及动脉和中心静脉导管血样本。在床边和实验室测量血红蛋白水平，并对结果进行比较。
约翰霍普金斯医院成人麻醉后护理单元。
从62名接受普通外科手术的成年人中总共获取了187份血样。第一组包括20名有毛细血管血和静脉血样本的受试者。第二组包括21名有动脉血样本的受试者。第三组包括21名有中心静脉血样本的受试者。
结果表明，在获取动脉血和中心静脉血样本之前需要丢弃的血量不必大于导管死腔的两倍，并且在测量血红蛋白水平之前将血样摇晃10秒钟足以混合样本。床边和实验室血红蛋白水平测量结果具有可比性。
床边血红蛋白测量可提高患者护理效率，降低工作人员血液传播感染风险，并降低患者费用。然而，进行检测的人员必须负责遵守操作规范，以尽量减少测量误差。
