摘要
【摘要】目的探讨阻抗法测量新生儿,输出量的准确性。方法对30例新生儿同时使用无创血流动力学监测系统（NICaS）和多普勒超声心动图（ECHO）测量心输出量（CO），采用Bland—Ahman法比较2种方法的一致性。结果30例新生儿平均孕周为（37．5±1．9）周，出生体重为（2913＋423）g，男性比例为56．7％（17／30）。ECHO测量的每搏输出量（ECHO—SV）与NICaS测量的sV（NICaS．SV）分别为（4．45＋0．78）mL和（4．54＋0．81）mL，差值平均值一0．09mL，一致性区间（LoA）为（一1．92，1．73）mL，矫正后的精准度为：27．3％。ECHO测量的心输出量（ECH—O—CO）与NICaS测量的CO（NICaS—CO）分别为（0．62_＋0．12）L／min和（0．61±O．12）L／rain，差值平均值0．01L／min，LoA为（一033，0．31）L／rain，矫正后的精准度为：28．3％。结论阻抗法与ECHO测量心输出量一致性良好，但还需要通过更多病例数来进一步验证。
Objective To explore the accuracy and precision of impedance technique cardiac out- put measurement. Methods A total of 30 neonates with 30 pairwise cardiac output （CO） measurements of impedance technique and echocardiogram （ECHO） were performed. Data analysis was used to study the con- sistency between impedance technique from NICaS and ECHO cardiac output measurements, and results are presented in Bland-Ahman plot. Results The mean gestational age were （37.5±1.9） weeks, mean birth weight were （2913±423） g, and seventeen neonates were male （17/30）. The stroke volume （SV） by ECHO （ECHO-SV） and by NICaS （NICaS-SV） were （4.45±0.78） mL and （4. 54±0. 81） mL, respec- tively. The bias and limits of agreement （LoA） of NICaS-SV were 0.09 mL, （ -1.92, 1.73） mL, respec- tively. The true precision of NICaS-SV is 27.3%. The cardiac output （CO） by ECHO （ECHO-CO） and by NICaS （NICaS-CO） were （0.62＋0.12） L/min and （0.61±0.12） L/min, respectively. The bias and LoA of NICaS-CO were 0.01L/min and （ -0.33, 0.31） L/min, respectively. The true precision of NICaS- CO is 28.3%. Conclusions Agreement between the impedance technique and ECHO in the cardiac output measurement is acceptable. Because of lack of a large number of patients, the accuracy and precision need to be further estimated.
作者
吴文燊
何晓光
谢彩璇
马可泽
李金凤
李建波
邓碧滢
刘绍基
李宁
林淑莲
Wu Wen-shen;He Xiaoguang;Lin Shulian;Xie Caixuan;Ma Keze;Li Jinfen;Li Jianbo;Deng Biying;Liu Shao-ji;Li Ning(Department of N1CU,Dongguan Children＇s Hospital,Guangdong Medi-cal University.Guangdong,china;Department of Ultrasound,Dongguan Children＇s Hospital,Guangdong Medical University.Guangdong,chin)
基金
东莞市社会科技发展(一般)项目立项(编号:2018507150281400)
