Table 2.

Mitral Valve Dimensions in Patients With Normal Hearts, IWMA, and DCM, With and Without MR

	Normal (n=20)	IWMA–MR (n=16)	IWMA–No MR (n=14)	DCM–MR (n=13)	DCM–No MR (n=17)
AL length, mm†	2.43±0.34	2.65±0.29	2.53±0.40	2.75±0.40	2.41±0.19
PL length, mm†	1.14±0.15	1.36±0.20	1.38±0.18	1.23±0.21	1.27±0.09
AL thickness, mm	1.59±0.21	2.05±0.20*	1.71±0.21§	2.22±0.30*	1.95±0.31*
PL thickness, mm	1.66±0.21	2.14±0.22*	1.72±0.22§	2.21±0.25*	2.04±0.30*
Total valvular area, cm2	15.0±2.3	19.6±2.5*	18.6±2.5*‡	20.2±2.3*	22.2±2.0*§
Diastolic annular area, cm2	7.5±0.8	10.4±0.8*	8.4±0.9§	10.5±0.9*	11.0±1.2*‡

AL indicates anterior leaflet, PL, posterior leaflet.

^*P< 0.05 vs normal.

^†No statistically significant difference among groups (P=NS).

^‡No statistically significant difference between patients with and without MR (P=NS) within the IWMA or DCM patient groups.

^§P< 0.05 for MR vs no MR within the IWMA or DCM groups.