The unifocal origin of fibrillation is demonstrated clearly since the fibrillation caused by topical application of aconitine on the dog's atrium can be transformed into flutter or sinus rhythm by ...

sinus depolarization would suppress it 2,3. Figure 2: An ECG obtained from a beagle dog 21 days later, showing six rhythm strips simultaneously (leads I, II, III, aVR, aVL and aVF). VPCs are the ...

Neither had received digitalis before the use of diphenylhydantoin. Both promptly reverted to normal sinus rhythm. One patient was digitalized several hours after diphenylhydantoin was given (Fig.