真空负压静脉采血方法的探讨

Venous Blood Sampling by Vacuum Negative Pressure

目的探讨采用真空负压静脉采血方法的临床效果。方法将200例住院患者按随机数字表法分为观察组与传统组,每组100例。观察组在穿刺点处进行静脉穿刺,见回血后放松止血带,嘱患者握拳5 s后进行采血;传统组穿刺回血后不放松止血带。观察采血效果。结果观察组采血一次成功率为100%,传统组78%,差异有统计学意义(P<0.05);观察组采血时间(90±5)s,传统组为(160±8)s,差异有统计学意义(P<0.05);观察组无痛率为90%,传统组为34%,差异有统计学意义(P<0.05)。观察组患者静脉穿刺处基本无淤血,传统组患者穿刺处多有明显的淤血。结论真空负压方法可有效采集静脉血。

Objective To investigate the clinical effect of vacuum negative pressure on venous blood sampling.Methods Two hundred in-patients were randomly divided into two groups,with 100 patients in each group.In observation group,the vein was punctured,and the tourniquet was loosened after seeing blood,then blood was drawn after patients made a tightly clenched fist for 5 seconds.In traditional group,blood was drawn directly without loosening the tourniquet.ResultsCompared with traditional group（78%）,one-time success rate of blood sampling in observation group（100%） increased significantly（P0.05）.Blood sampling time was（90±5） and（160±8） seconds in observation group and traditional group,respectively,and there were significant differences between the two groups（P0.05）.Painless rate in observation group（90%） was obviously higher than that in traditional group（34%,P0.05）.Furthermore,there was almost no congestion at vein puncture point in observation group,but obvious congestion in traditional group.Conclusion The use of vacuum negative pressure is effective for blood sampling.