in closed-chest animals ( group 1 ) , the maximal increase of the ventricular fibrillation threshold ( vft ) from the control state was 67.3 +/- 22.6 % ( n = 5 , p less than 0.01 ) for propranolol and 95.8 +/- 18.8 % ( n = 9 , p less than 0.005 ) for timolol .
C0042510
ventricular
C0033497
propranolol