. Author manuscript; available in PMC: 2011 Sep 1.

Published in final edited form as: J Thorac Cardiovasc Surg. 2010 Feb 1;140(3):617–623. doi: 10.1016/j.jtcvs.2009.11.003

TABLE 2.

Limited mitral valve opening in patients with ischemic mitral regurgitation

		Ischemic MR
	Control N = 20	Presurgery N = 31	Postsurgery N = 31
LV EDV (mL)	89 ± 20	153 ± 46^*	137 ± 40^*
LV ESV (mL)	28 ± 11	92 ± 40^*	83 ± 40^*
EF (%)	70 ± 8	41 ± 9^*	42 ± 13^*
LV sphericity	0.54 ± 0.02	0.66 ± 0.07^*	0.68 ± 0.06^*
MAA (cm²)	5.2 ± 0.6	6.9 ± 0.9^*	3.3 ± 0.5^*,^†
Diastolic mitral leaflet opening angle (degree)
α1	80 ± 5	68 ± 7^*	62 ± 9^*,^†
α2	95 ± 7	78 ± 9^*	90 ± 15^*,^†
$ℓ 1 cm$	2.2 ± 0.3	1.5 ± 0.2^*	1.0 ± 0.3^*,^†
$ℓ 2 cm$	2.4 ± 0.3	3.3 ± 0.5^*	2.0 ± 0.3^*,^†
$ℓ 1 ∕ ℓ 2$	0.89 ± 0.10	0.44 ± 0.10^*	0.5 ± 0.10^*,^†
MVA (cm²)	4.7 ± 0.6	3.5 ± 0.7^*	1.6 ± 0.2^*,^†
MVA < 1.5 cm²	0/20	0/31	13/31^*,^†
Peak PG (mm Hg)	1.7 ± 0.6	3.5 ± 2.6	10.6 ± 6.2^*,^†
Mean PG (mm Hg)	0.6 ± 0.2	0.8 ± 0.8	3.5 ± 2.7^*,^†
MR VC dimension (mm)	0 ± 0	5.6 ± 1.7	1.9 ± 1.6
MR VC ≥ 5 mm	0/20	14/31	1/31

LV, Left ventricle; EDV, end-diastolic volume; ESV, end-systolic volume; EF, ejection fraction; MAA, mitral annular area; MVA, mitral valve area; PG, pressure gradient; MR, mitral regurgitation; VC, vena contracta.

P < .05 vs control individual.

^†

P < .05 vs presurgery.