Table 2.

Cardiac and lung assessment on CT

Measurement	“Classic” NFHG	“Discordant” NFLG	“Paradoxical” pLFLG	p value
	(n = 27)	(n = 27)	(n = 27)
LV assessment
LV end-diastolic volume, mL	164 (133-180)	147 (129-187)	144 (111-182)	0.57
LV end-systolic volume, mL	58 (46-74)	60 (49-86)	56 (44-80)	0.53
LV stroke volume, mL	96 ± 19	92 ± 21	86 ± 23	0.17
LV ejection fraction, %	61 ± 6	58 ± 6	58 ± 6	0.05
LV total mass, g	159 ± 48	151 ± 45	134 ± 42	0.12
LV septum max, mm	14 ± 3	13 ± 3	13 ± 2	0.15
RV assessment
RV end-diastolic volume, mL	146 ± 38	155 ± 52	152 ± 49	0.77
RV end-systolic volume, mL	63 ± 24	72 ± 32	81 ± 41	0.14
RV stroke volume, mL	83 ± 20	84 ± 23	72 ± 20	0.07
RV ejection fraction, %	58 ± 7‡	55 ± 6‡	49 ± 10∗,†	<0.01
RV total mass, g	30 ± 7	33 ± 9	33 ± 12	0.43
Lung assessment
Air fraction (%)	75 ± 7	73 ± 8	74 ± 6	0.58
Emphysema (%)	0 (0-1)	0 (0-0)	0 (0-0)	0.19

Notes. Normal continuous variables are reported as mean ± standard deviation while non-normal variables are reported as median with first and third quartiles (Q1 and Q3, respectively). Categorical variables are reported as number (percentage).

LV = left ventricular, NFHG AS = normal-flow high-gradient aortic stenosis, NFLG AS = normal-flow low-gradient aortic stenosis, pLFLG AS = paradoxical low-flow low-gradient aortic stenosis, RV = right ventricular.

^∗p < 0.05 Compared with NFHG AS.

^†p < 0.05 Compared with NFLG AS.

^‡p < 0.05 Compared with pLFLG AS.