Diagnostic accuracy of hospitalist-performed hand-carried ultrasound echocardiography after a brief training program.
Academic Article
Overview
abstract
BACKGROUND: The duration of training needed for hospitalists to accurately perform hand-carried ultrasound echocardiography (HCUE) is uncertain. OBJECTIVE: To determine the diagnostic accuracy of HCUE performed by hospitalists after a 27-hour training program. DESIGN: Prospective cohort study. SETTING: Large public teaching hospital. PATIENTS: A total of 322 inpatients referred for standard echocardiography (SE) between March and May 2007. INTERVENTION: Blinded to SE results, attending hospitalist physicians performed HCUE within hours of SE. MEASUREMENTS: Diagnostic characteristics of HCUE as a test for 6 cardiac abnormalities assessed by SE: left ventricular (LV) systolic dysfunction; severe mitral regurgitation (MR); moderate or severe left atrium (LA) enlargement; moderate or severe LV hypertrophy; medium or large pericardial effusion; and dilatation of the inferior vena cava (IVC). RESULTS: A total of 314 patients underwent both SE and HCUE within a median time of 2.8 hours (25th to 75th percentiles, 1.4 to 5.1 hours). Positive and negative likelihood ratios for HCUE increased and decreased, respectively, the prior odds by 5-fold or more for LV systolic dysfunction, severe MR regurgitation, and moderate or large pericardial effusion. Likelihood ratios changed the prior odds by 2-fold or more for moderate or severe LA enlargement, moderate or severe LV hypertrophy, and IVC dilatation. Indeterminate HCUE results occurred in 2% to 6% of assessments. CONCLUSIONS: The diagnostic accuracy of HCUE performed by hospitalists after a brief training program was moderate to excellent for 6 important cardiac abnormalities.
