体外循环系统中使用阻隔器连接压力换能器或机械压力表测压的准确性评价的离体实验  

Comparison of isolator and pressure transducer for monitoring pressure during extracorporeal circulation

作　　者：陈洁[1] 贾在申[1] 刘锋[1] 孙志全[1] 李蛟[1] Chen Jie;Jia Zaishen;Liu Feng;Sun Zhiquan;Li Jiao(Department of Extracorporeal Circulation,Center for Cardiac Intensive Care,Beijing Anzhen Hospital,Capital Medical University,Beijing Institute of Heart,Lung and Blood Vessel Diseases,Beijing 100029,China)

机构地区：[1]首都医科大学附属北京安贞医院体外循环与机械循环辅助科成人心脏危重症中心北京心肺血管疾病研究所

出　　处：《中国体外循环杂志》2019年第6期356-359,共4页Chinese Journal of Extracorporeal Circulation

摘　　要：目的评价体外循环(ECC)系统中使用阻隔器与压力换能器或机械压力表连接测压的准确性。方法在成人或婴儿ECC系统中,不同流量下通过钳夹动脉微栓过滤器远端的管路改变所测管路的压力,从而将阻隔器连接机械表和阻隔器连接换能器测压与应用压力换能器所测读数进行比较;在不同流量下调节负压辅助静脉引流(VAVD)输出的负压,比较阻隔器连接换能器和应用压力换能器测压与VAVD输出的负压的差别。结果成人或婴儿ECC环路测正压过程中,阻隔器连接的机械表读数、阻隔器连换能器读数与压力换能器读数均具有相关性,差异无统计学意义;成人或婴儿ECC环路测负压过程中,阻隔器连换能器读数与VAVD输出的负压数具有相关性,差异有统计学意义;压力换能器读数与VAVD输出的负压数具有相关性,差异无统计学意义。结论在ECC中监测正压时考虑到经济问题是可以用阻隔器,而在测量负压时由于误差较大,不宜使用阻隔器。Objective The aim of this study was to evaluate the accuracy of isolator versus pressure transducer for monitoring pressure during extracorporeal circulation(ECC).Methods Adult ECC system and infant ECC system were used in our study.The results of isolator and pressure transducer for monitoring positive or negative pressure were compared.Results When monitoring positive pressure in adult ECC system and infant ECC system,the results of isolator were comparable to those of pressure transducer.However,when monitoring negative pressure in adult ECC system and infant ECC system,the results of isolator were significantly higher than those of vacuum-assist venous drainage(VAVD),and the results of pressure transducer were comparable to those of VAVD.Conclusion Isolator was cheap and could be applied for monitoring positive pressure in ECC system,but not suitable for monitoring negative pressure due to significant error.

关 键 词：体外循环 测压 阻隔器 压力换能器 循环管路 负压 

分 类 号：TB5[理学—物理]