Key result
Emergency physician-performed cardiac ultrasound yields ~94% sensitivity to rule out diastolic dysfunction in suspected acute heart failure.
Why the study?
Does emergency physician-performed focused cardiac ultrasound accurately diagnose left ventricular diastolic dysfunction in adult emergency department patients with suspected acute heart failure?
Meta-Analysis (n=298)
Does emergency physician-performed focused cardiac ultrasound accurately diagnose left ventricular diastolic dysfunction in adult emergency department patients with suspected acute heart failure?
Emergency physician-performed focused cardiac ultrasound possesses excellent sensitivity for ruling out diastolic dysfunction in suspected acute heart failure, but its moderate specificity precludes its standalone use as a definitive rule-in diagnostic test.
Answers are grounded in this paper and cite their sources.
May support emergency physician ultrasound as a diastolic dysfunction rule-out tool in suspected acute heart failure; leaves open need for prospective validation trials.
Background: This study compared the accuracy of diagnosing left ventricular diastolic dysfunction (DD) between emergency physician (EP)-performed focused cardiac ultrasound (FCU) and cardiologist-interpreted reference standards in adult patients presenting to the emergency department (ED) with suspected acute heart failure (HF). Methods: PubMed, Embase, and the Cochrane Central Register of Controlled Trials were systematically searched for studies focusing on adult ED patients with symptoms of acute HF that compared the accuracy of DD diagnosis between EP-performed FCU and reference standards including cardiologist-reviewed FCU clips, formal transthoracic echocardiography, or invasive hemodynamics without language/date restrictions. Results: Meta-analysis of four eligible observational studies (327 patients enrolled; 298 analyzed) demonstrate excellent sensitivity of EP-performed FCU compared with the standards (94%, 95% CI: 87 to 97%) but moderate specificity (59%, 95% CI: 42 to 74%) in diagnosing DD patients with suspected acute HF. Three of the four studies showed a high risk of overall bias. Conclusions: EP-performed FCU exhibited excellent sensitivity and low negative likelihood ratios, supporting its use as an effective initial triage tool for ruling out DD in ED patients with suspected acute HF. However, its moderate specificity and limited positive likelihood ratios hamper its standalone use as a definitive diagnostic modality for ruling in DD (PROSPERO: CRD420251046794).
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Huang et al. (2025) conducted a meta-analysis in Suspected acute heart failure / Left ventricular diastolic dysfunction (n=298). Emergency physician-performed focused cardiac ultrasound (EP-FCU) vs. Cardiologist-interpreted reference standards (formal TTE, reviewed FCU clips, or invasive hemodynamics) was evaluated on Sensitivity for diagnosing left ventricular diastolic dysfunction (Sensitivity 94%, 95% CI 87 to 97). Emergency physician-performed focused cardiac ultrasound exhibited 94% sensitivity for diagnosing diastolic dysfunction in suspected acute heart failure, supporting its use as a rule-out triage tool.
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