Consistent observation of cardiac output in severe patients monitored continuously by LiDCO and PiCCO
10.3760/cma.j.cn431274-20241031-01641
- VernacularTitle:LiDCO与PiCCO连续监测重症患者心输出量的一致性观察
- Author:
Yaqi XU
1
;
Yongyi CHEN
;
Dezhi REN
;
Chen LI
;
Jun DUAN
Author Information
1. 中日友好医院（中日友好临床医学研究所）/北京协和医学院/中国医学科学院，北京 100730
- Publication Type:Journal Article
- Keywords:
Hemodynamic monitoring;
Pulse wave analysis;
Cardiac output
- From:
Journal of Chinese Physician
2025;27(3):373-376
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate whether continuous cardiac output (CO) parameters obtained by LiDCO in hemodynamic monitoring of severe patients are consistent with pulse index continuous cardiac output (PiCCO).Methods:From May 18, 2024 to January 10, 2025, 12 critically ill patients who were monitored by PiCCO in the Intensive Care Unit Department of China-Japan Friendship Hospital were prospectively collected. The PiCCO and LiDCO systems were simultaneously connected to the same critically ill patient, injected with ice saline for external calibration, and the average of paired continuous CO measurements were collected. Bland-Altman was used to analyze whether the two were consistent, and Spearman was used to analyze the correlation between norepinephrine dosage and bias.Results:In the data series of 70 pairs, the CO measured by PiCCO was 5.55±1.74, and the CO measured by LiDCO was 4.40(2.90, 6.50), with a bias of 0.52(95% CI: 0.07-0.96) and an upper limit of agreement of 4.2(95% CI: 3.4-4.9), the lower limit of the conformance limit was -3.1(95% CI: -3.9 to -2.4), and the percentage error was 66%, exceeding the clinically acceptable 45%. In the data series where norepinephrine was continuously pumped at the time of data collection, there was a moderate positive correlation between norepinephrine dosage and absolute bias ( r=0.47, P<0.05). There were statistically significant differences in absolute values of bias between groups defined as 0.5 μg/(kg·min) and 1 μg/(kg·min) ( P<0.05). Conclusions:There is no clinically acceptable consistency between LiDCO and PiCCO for continuous CO monitoring in severe patients, and the size of bias may be related to the dosage of norepinephrine.
