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. Author manuscript; available in PMC: 2014 Dec 10.

Published in final edited form as: J Am Coll Cardiol. 2013 Feb 26;61(8):837–848. doi: 10.1016/j.jacc.2012.10.049

Table 2.

Preoperative Echocardiographic Measurements

Measurement	Overall					Propensity Matched
	Isolated AS (n=1,637)		AS+CAD (n=2,286)		P	Isolated AS (n=1,082)		AS+CAD (n=1,082)		P
	n^a	Mean ± SD	n^a	Mean ± SD	P	n^a	Mean ± SD	n^a	Mean ± SD	P
*Aortic valve hemodynamics*
Area (cm²)	1,426	0.65 ± 0.14	1,992	0.67 ± 0.14	<.0001	942	0.65 ± 0.14	932	0.66 ± 0.14	.5
Mean gradient (mmHg)	1,468	52 ± 16	2,042	45 ± 16	<.0001	969	50 ± 16	957	49 ± 16	.4
Peak gradient (mmHg)	1,474	87 ± 26	2,042	76 ± 25	<.0001	975	84 ± 25	956	84 ± 24	>.9
*Left ventricle*
Morphology
Posterior wall thickness (cm)	1,430	1.3 ± 0.24	1,894	1.3 ± 0.23	.5	932	1.3 ± 0.24	905	1.3 ± 0.22	.8
Septal thickness (cm)	1,440	1.5 ± 0.29	1,915	1.5 ± 0.31	.6	939	1.5 ± 0.28	915	1.5 ± 0.29	.9
Mass index (g·m⁻²)	1,398	128 ± 42	1,863	134 ± 41	<.0001	908	132 ± 43	886	131 ± 42	.6
End-diastolic diameter (cm)	1,446	4.6 ± 0.79	1,934	4.7 ± 0.81	<.0001	945	4.6 ± 0.82	927	4.6 ± 0.82	.2
End-systolic diameter (cm)	1,432	3.0 ± 0.84	1,911	3.1 ± 0.90	<.0001	940	3.0 ± 0.86	920	3.0 ± 0.85	.2
Function
Ejection fraction (%)	1,509	55 ± 11	2,134	51 ± 13	<.0001	987	54 ± 11	1,006	54 ± 11	.4
*Left atrium*
Diameter (cm)	1,352	4.1 ± 0.76	1,836	4.3 ± 0.75	<.0001	887	4.2 ± 0.75	857	4.2 ± 0.75	.4

^a

Patients with data available.

Key: AS, aortic stenosis, CAD, coronary artery disease; SD, standard deviation.