Table 3. Comparison of Echocardiographic Parameters at Baseline and 6-Month Follow-Up After CRT in the MR Reduction Group and the MR No-Reduction Group.

	MR Reduction (n=18)			MR No-Reduction (n=16)
	Pre-CRT	Post-CRT	P	Pre-CRT	Post-CRT	P
MR (RV-ml)	43±13	18±10	<0.001	26±17*	29±15	0.008
EDV, mL	265±88	228±77	0.009	239±134	215±134	0.02
ESV, mL	216±78	167±81	0.001	195±118	168±113	0.004
EF, %	19±5	28±10	<0.001	20±7	24±12	0.03
MAA, cm2	12.4±3.2	11±3.4	<0.001	10.8±3.9	10±2.8	0.1
MAA contr, %	3.9±0.7	7.8±0.5	0.07	4.2±1	8.8±0.7	0.3
TV, mL	6.4±2.5	4.8±2.4	<0.001	5±2.8	4.6±2.1	0.1
Leaflet closing area, cm2	16.9±3.8	14.5±4.1	0.008	14.2±4	13.1±3.6	0.2
Closing pressure ratio	0.77±0.04	0.85±0.1	0.02	0.78±0.1	0.81±0.1	0.2
dP/dt, mm Hg/s	548±227	867±447	0.02	519±181	750±264	0.01

RV indicates regurgitant volume; TV, tenting volume.

P compares pre-CRT versus post-CRT

^*P<0.05 (pre-CRT MR reduction versus pre-CRT MR no reduction).