Table 1.

Hemodynamic definitions of pulmonary hypertension

(adapted from [17])

Definition	mPAP (mmHg)	PAWP (mmHg)	PVR (WU)	DPG (mmHg)
Pre-capillary PH	≥ 25	≤ 15	> 3	≥ 7
Post-capillary PH	≥ 25	> 15	≤ 3	< 7
Combined pre- and post-capillary PH	≥ 25	> 15	> 3	≥ 7

PH pulmonary hypertension, mPAP mean pulmonary arterial pressure, PAWP pulmonary arterial wedge pressure, PVR pulmonary vascular resistance, DPG diastolic pressure gradient (DPG = diastolic PAP (dPAP) − PAWP), WU wood units