the ratio of myocardial infarct size to the region at risk of infarction was substantially larger in dogs with electrically induced , closely coupled extrasystoles ( 0.58 ( 0.07 ) ; p less than 0.01 ) than in control dogs ( 0.24 ( 0.06 ) ) or dogs with widely coupled induced extrasystoles ( 0.32 ( 0.07 ) ) .
C0027051
myocardial infarct
C0021308
infarction