Table 2.

RV systolic pressure differential and Ees/Ea stratified by cohort and PV loop shape

	Multibeat Ees/Ea			RV Systolic Pressure Differential, mmHg			Single-Beat Ees/Ea
	n	Median [IQR]	P	n	Median [IQR]	P	n	Median [IQR]	P
Cohort			<0.001*			<0.001*			0.080*
PAH	77	0.8 [0.5 to 1.0]		77	17 [9 to 32]		76	0.8 [0.5 to 1.1]
PH excluded	15	1.7 [1.1 to 2.3]		15	−1 [−7.6 to 3.7]		14	1.0 [0.6 to 1.1]
PV loop shape			0.006†			<0.001†			0.051†
Triangular	10	1.9 [1.2 to 2.4]		10	−11 [−15 to −7]		10	1.0 [0.7 to 1.2]
Quadratic	16	1.1 [0.8 to 1.7]		16	0.2 [−0.8 to 3]		16	1.0 [0.7 to 1.2]
Trapezoid	28	0.7 [0.5 to 0.9]		28	17 [10 to 29]		27	0.8 [0.5 to 1.0]
Notched	38	0.8 [0.4 to 1.1]		38	25 [16 to 35]		37	0.7 [0.4 to 1.1]

Ea, arterial elastance; Ees, end-systolic elastance; IQR, interquartile range; PAH, pulmonary arterial hypertension; PH, pulmonary hypertension; PV, pressure-volume; RV, right ventricular.

^*MannWhitney U test (PAH vs PH excluded).

^†KruskalWallis test across PV loop shapes.