目的：研究无创连续心脏指数(continuous cardiac index, CCI)、冠心病危险因素与左心室射血分数(left ventricular ejection fraction, LVEF)的相关性。方法：回顾性分析2022年1月至3月本院特需门诊拟行无痛胃肠镜检查的90例麻醉前评估病人。使用无创实时动脉血压及血流动力学监测系统测定CCI。收集3组冠心病危险因素。根据心脏超声检查测量的LVEF结果将病人分为3组：40%~49%组(n=15)、50%~59%组(n=38)和>60%组(n=37)。结果：与其他2组相比，LVEF 40%~49%组病人的吸烟史(60.0%)、高血压(80.0%)、糖尿病(73.3%)、高脂血症(86.6%)、肥胖症(53.3%)、早发心血管疾病家族史(33.3%)，以及冠心病危险因素≥3个(80.0%)的比例均为最高(P<0.05)。LVEF 40%~49%组病人的CCI值在3组中最低(P<0.05)，CCI值与LVEF值呈显著正相关(r>0.95, P<0.05)。结论：应用无创实时动脉血压及血流动力学监测系统行麻醉评估显示，CCI与LVEF相关，有利于提高麻醉安全性。

Objective To study both non-invasive continuous cardiac index (CCI) and risk factors of coronary heart disease related with left ventricular ejection fraction (LVEF). Methods Retrospective study was done at VIP Health Center with 90 patients with preanesthesia assessment for gastrointestinal endoscopy under intravenous anesthesia between January and March 2022 in our hospital. CCI was measured using non-invasive real-time arterial blood pressure and hemodynamic monitoring system. Risk factors of coronary heart disease were collected. There were three groups of patients according to the results of LVEF gotten from echocardiography examination including group of LVEF 40%-49% (n=15), group of LVEF 50%-59% (n=38) and group of LVEF >60% (n=37). Results The group of LVEF 40%-49% had the highest rate of smoking (60.0%), hypertension (80.0%), diabetes (73.3%), hyperlipidemia (86.6%), obesity (53.3%), family history of early onest cardiovascular disease (33.3%) and the highest rate of ≥3 risk factors of coronary heart disease (80.0%)(P<0.05). The CCI in the group of LVEF 40%-49% was the lowest among three groups (P<0.05). There was a significant positive correlation between CCI and LVEF (r>0.95, P<0.05). Conclusions It was suggested that non-invasive real-time arterial blood pressure and hemodynamic monitoring system could be used for preanesthesia assessment, and CCI related to LVEF, which improves the safety of anesthesia for patients.