comparisons of infarcted and noninfarcted regions in mi patients revealed an increased threshold of excitability at infarct sites ( e.g. , 1.9 +/- 1.0 vs 0.7 +/- 0.4 ma , p less than 0.05 ) and prolongation of refractory periods ( 375 +/- 118 vs 275 +/- 13 ms , p less than 0.05 ) at the lowest level of stimulating current .
C0027051
mi
C0021308
infarct