重症患者血培养最优采血量的初步探讨  

Study on the optimal blood volume in severe patients'blood culture

作　　者：张惠媚[1] 张春雷[1] 李瑜珍[1] 曾学辉[1] 蔡闯闯 ZHANG Huimei;ZHANG Chunlei;LI Yuzhen(Department of Clinical Laboratory,Shenzhen Traditional Chinese Medicine Hospital,Guangdong Shenzhen 518000)

机构地区：[1]深圳市中医院医学检验科,广东深圳518000

出　　处：《医学检验与临床》2022年第12期44-47,共4页Medical Laboratory Science and Clinics

摘　　要：目的:探讨血流感染患者血培养采血量与阳性率的关系,以及采血量对报阳时长的影响,为重症患者制定血培养个性化采血量提供依据。方法:回顾性分析2020年深圳市中医院4905例血培养,分析不同采血量区间阳性率的异同,以及不同病原菌的采血量和报阳时长之间的相关性。结果:采血量5~6ml区间(阳性率14.1%)与采血量8~9ml区间(阳性率9.8%)和11-12ml区间(阳性率7.5%)相比较,有统计学意义(P<0.05),采血量和报阳时长之间存在弱相关性,r分别为0263、0.219,P<0.05,病原菌为大肠埃希菌和金黄色葡萄球菌的血培养采血量与报阳时长之间无明显相关性。结论:为减少检验性失血,可将重症患者血培养采血量定为5~6ml,采血量对报阳时长的影响不显著。Objective:To investigate the relationship between blood volume and positive rate in blood culture,and the influence of blood volume on positive alarm time,to provide a reference for making a personalized volume of blood for special needs patients.Methods:A retrospective analysis of 4905 cases of adult blood culture with blood volume recorded in Shenzhen Traditional Chinese Medicine Hospital in 2020 was performed,the positive rate of each interval blood volume and the correlation between blood volume with positive alarm time.Results:The positive rate of blood volume in the interval of 5~6 mL was 14.1%,and the positive rate of blood volume in 8~9 mL and 11~12 mL was 9.8% and 7.5%(PV0.05).There was no significant diference in the positive rate of blood volume in the other intervals.There was a weak correlation between blood volume and the positive alarm time in positive aerobic culture(r=0.263,P<0.05)and positive anaerobic culture(r=0.219,P<0.05),there was no significant correlation between the blood volume with the positive alarm time in Escherichia coli and Staphylococcus aureus.Conclusion:To reduce blood loss from tests,the blood culture volume of severe patients can be set at 5~6 ml,and the influence of blood volume on positive alarm time is not obvious.

关 键 词：血培养 最优采血量 报阳时长 检验性失血 

分 类 号：R459.7[医药卫生—急诊医学] R446.1[医药卫生—治疗学]