Fig. 2
From: IMproving PULmonary hypertension Screening by Echocardiography: IMPULSE
Proposed additional algorithm for those with low or intermediate TTE probability to help identify those with PH and low TTE probability. RVFAC normal cut-off values taken from (Harkness et al., 2020). RVFWLS (right ventricular free wall longitudinal strain); RVFAC (right ventricular fractional area change); IVRT TDI (isovolumetric relaxation time by tissue Doppler imaging); IMPULSE (improving pulmonary hypertension screening by echocardiography)