Rapid Screening of Cardiac Patients with a Miniaturized Hand-Held Ultrasound Imager - Comparisons with Physical Examination and Conventional Two-Dimensional Echocardiography

Background: Rapid screening of cardiac patients with a hand-held ultrasound imager (SonoHeart™ [SH]) could provide valuable clinical information. Hypothesis: Whether the use of this device yields additional information to a carefully conducted physical examination and comparable findings to those of conventional two-dimensional echocardiography (2-D) during inpatient rounds is not well established and is the subject of this study. Methods: In all, 100 consecutive telemetry patients underwent rapid screening with 2-D and color Doppler SH during inpatient rounds. SonoHeart findings were compared with results from conventional 2-D and physical examination conducted by an attending cardiologist. Results: All patients had interpretable images. Mean scanning time with SH was 5.0 ± 1.2 min; 2-D and SH findings were comparable. The parameters studied included chamber sizes, left ventricular (LV) systolic function, presence of LV hypertrophy (LVH), wall motion abnormalities (WMA), pericardial effusion (PE), and valvular regurgitations. Mild to moderate valvular regurgitation and LV systolic dysfunction were reliably diagnosed by SH in a number of patients whose symptoms were unrelated to the abnormalities detected. Conclusions: Rapid screening with SH provides accurate and valuable information that would otherwise be undetected during physical examination. Its introduction into clinical practice may redefine the initial approach to patients with cardiovascular disease.