Table 1.

Echocardiographic Assessment of Cardiac Geometry and Function. Echocardiography was performed 6 weeks after surgery for postnatal day 1 (P1) rats and 4 weeks after surgery for adult rats. LVIDd, left ventricle internal diameter in diastole; LVIDs, left ventricle internal diameter in systole; LVWTd, left ventricle wall thickness in diastole; MI, myocardial infarction.

P1 Rats	P1 Sham (n=14)	P1 MI (n=15)	P-value
LVWTd (mm)	1.34 ± 0.02	1.36 ± 0.02	0.4398
LVIDs (mm)	3.12 ± 0.27	3.56 ± 0.22	0.2137
LVIDd (mm)	5.92 ± 0.25	6.25 ± 0.27	0.3838
Ejection Fraction (%)	77.5 ± 3.0	72.7 ± 2.0	0.1946
Adult Rats	Adult Sham (n=7)	Adult MI (n=7)	P-value
LVWTd (mm)	1.85 ± 0.05	1.20 ± 0.08	<0.0001
LVIDs (mm)	3.20 ± 0.15	5.83 ± 0.41	0.0001
LVIDd (mm)	6.37 ± 0.31	7.61 ± 0.37	0.0246
Ejection Fraction (%)	79.7 ± 0.8	45.4 ± 3.9	<0.0001