Table II:

Left ventricular volume and mitral regurgitation (MR) data.

Measurement	Baseline	30 min post MI	Eight weeks after MI
			Resting	Dobutamine 5 μg/kg/min	Dobutamine 10 μg/kg/min
MR grade	0.7 ± 0.5	0.9 ± 0.7	2.0 ± 1.2a,b	2.6 ± 1.2a,b	2.6 ± 1.3a,b
LVEF (%)	40.3 ± 6.6	31.4 ± 5.8a	25.8 ± 7.7a	29.8 ± 7.5a	32.6 ± 10.7a
LVEDV (ml)	51.9 ± 8.7	57.9 ± 8.5	102.0 ± 24.1a,b	84.4 ± 24.0a,b,c	70.6 ± 19.1a,b,c,d
LVESV (ml)	31.2 ±6.8	39.8 ± 7.3a	75.8 ± 20.3a,b	59.6 ± 20.8a,b,c	47.7 ± 16.1a,c

All values are mean ± SD.

LVEDV: Left ventricular end-diastolic volume; LVEF: Left ventricular ejection fraction; LVESV: Left ventricular end-systolic volume; MI: Myocardial infarction.

^ap <0.05 versus baseline;

^bp <0.05 versus 30 min after MI;

^cp <0.05 versus resting condition,

^dp <0.05 versus dobutamine 5 μg/kg/min.