Objective To study the diagnostic values of electronic cardiometry(EC)for cardiac function monitoring in critically ill preterm infants.Methods From January 2023 to August 2023,critically ill preterm infants admitted to NICU of our hospital were prospectively enrolled and assigned into two groups based on echocardiographic results:decreased cardiac function group(decrease group)and normal cardiac function group(normal group).The following parameters were compared between the two groups:cardiac output(CO),stroke volume(SV),cardiac index(CI),index of contractility(ICON),left ventricular ejection time(LVET),thoracic fluid content(TFC)and systemic vascular resistance(SVR).The receiver-operating characteristic(ROC)curve was drawn to compare the diagnostic values of different hemodynamic parameters for cardiac function monitoring.Results A total of 138 infants were enrolled,including 36 in decrease group and 102 in normal group.Decrease group showed significantly lower parameters including CO,SV,CI,ICON and LVET,while higher TFC than normal group(all P＜0.05).No significant difference existed in SVR between the two groups(P＞0.05).ROC curves revealed that area-under-curve(AUC)for CO,SV,CI,ICON and LVET in diagnosing cardiac decompensation in critically preterm infants were 0.718(95％CI 0.608-0.828),0.790(95％CI 0.699-0.882),0.875(95％CI 0.779-0.935),0.786(95％CI 0.694-0.878)and 0.890(95％CI 0.829-0.952)with optimal cut-offs to be 0.47 L/min,4.02 ml,2.86 L/(min·m2),119.85 and 140 ms,respectively.The sensitivities were 63.9％,86.1％,86.1％,77.8％and 86.1％.The specificities were 79.4％,66.7％,78.4％,70.6％and 77.5％.Conclusions EC method can effectively monitor hemodynamic parameters and is helpful determining cardiac function in critically ill preterm infants.
关键词
电子心力测量法/危重早产儿/心功能减退/诊断价值
Key words
Electronic cardiometry/Critically preterm infants/Cardiac decompensation/Diagnostic value
维普
万方数据