Table 3.

CVF, PVCA and content of blue-stained collagen in myocardial tissues (x̅±S)

Group	n	CVF (%)	PVCA	Blue-stained collagen
Sham operation	8	2.18±0.14	0.76±0.06	10.14±2.26
Operation group	6	11.36±0.41a	2.75±0.16a	29.08±7.75a
RSG group	8	8.43±0.84b	1.74±0.62b	17.61±1.92b
PRNK group	7	6.72±0.38b,c	1.21±0.51b,c	13.04±1.86b,c

^aP<0.01 compared with sham operation group;

^bP<0.05 compared with operation group;

^cNo statistically significant difference compared with RSG group.