Department of Emergency Medicine, UR UM 103 (IMAGINE), Nîmes University Hospital, Montpellier University, Nîmes, France.
Department of Medical Imaging, IPI Platform, Nîmes University Hospital, Medical Imaging Group Nîmes, IMAGINE, University of Montpellier, Nîmes, France.
PLoS One. 2024 Aug 12;19(8):e0308580. doi: 10.1371/journal.pone.0308580. eCollection 2024.
Assessment of left ventricular ejection fraction (LVEF) is one of the primary objectives of echocardiography. The gold standard assessment technique in emergency medicine is eyeballing. A new tool is now available on pocket ultrasound devices (PUD): automatic LVEF. The primary aim of this study was to evaluate the concordance between LVEF values estimated by automatic LVEF with PUD and by cardiac magnetic resonance imaging (MRI).
This was a prospective, monocentric, and observational study. All adult patients with an indication for cardiac MRI underwent a point-of-care ultrasound. Blinded to the MRI results, the emergency physician assessed LVEF using the automatic PUD tool and by visual evaluation.
Sixty patients were included and analyzed. Visual estimation of LVEF was feasible for all patients and automatic evaluation for 52 (87%) patients. Lin's concordance correlation coefficient between automatic ejection fraction with PUD and by cardiac MRI was 0.23 (95% CI, 0.03-0.40).
Concordance between LVEF estimated by the automatic ejection fraction with PUD and LVEF estimated by MRI was non-existent.
评估左心室射血分数（LVEF）是超声心动图的主要目标之一。在急诊医学中，金标准评估技术是目测。现在，掌上超声设备（PUD）上有了一种新工具：自动 LVEF。本研究的主要目的是评估自动 LVEF 与心脏磁共振成像（MRI）测量的 LVEF 值之间的一致性。
这是一项前瞻性、单中心、观察性研究。所有有心脏 MRI 适应证的成年患者均接受了即时超声检查。在不知道 MRI 结果的情况下，急诊医生使用自动 PUD 工具和目测评估来评估 LVEF。
共纳入 60 例患者并进行了分析。所有患者均可行目测 LVEF，52 例（87%）患者可行自动评估。自动 PUD 与心脏 MRI 测量的射血分数之间的 Lin 一致性相关系数为 0.23（95%CI，0.03-0.40）。
自动 PUD 与 MRI 测量的 LVEF 之间无一致性。
