ventricular fibrillation occurred within 60 min following isoproterenol injection in 25 , 25 , 62.5 , 50 , and 62.5 % of rats on magnesium deficient diet for 4 , 7 , 11 , 15 , and 19 days ( n = 8 ) , respectively , and resulted in death in most animals ( 83 % ) .
C0042510
ventricular
C0022245
isoproterenol