Feasibility of Remote Real-Time Guidance of a Cardiac Examination Performed by Novices Using a Pocket-Sized Ultrasound Device

Table 1

Components of the CLUE Protocol.

Signs	Probe site	Diagnostic targets	Normal	Abnormal
LVSD	Parasternal long axis	Distance from the anterior leaflet of the mitral valve to the septum during diastole	≤1 cm	>1 cm
LAE	Parasternal long axis	Anteroposterior diameter of the LA versus overlying aorta throughout the cardiac cycle	Aorta > LA	LA > Aorta
ULC+	Bilateral lung apices	Number of lung comets in either lung apex	<3	≥3
eCVP	Subcostal	Percent luminal diameter reduction of IVC with respiration, without forced “sniffing”	>50%	≤50%