Effect of disopyramide on the sino-atrial node

Garcia, B.D.; Perez, T.; Nieto, L.K.

Kardiologiia 16(3): 134-135

1976


ISSN/ISBN: 0022-9040
PMID: 1021623
Document Number: 102010
Low doses (10-100 .mu.g/ml) of disopyramide injected directly in the artery of the sinus node in dogs increased sinus frequency and did not prevent auricular fibrillation caused by injection of 10 .mu.g/ml of acetylcholine in the same artery; doses above 100 .mu.g/ml decreased frequency and prevented fibrillation. Since the direct effect on the sinus node function prevented arrhythmia, disopyramide should be used with caution in arrhythmia with a disturbed sinus node.

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