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Circulation. 1974;49:1254-1256

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(Circulation. 1974;49:1254.)
© 1974 American Heart Association, Inc.

Augmentation of Electrical Alternans with Lowering of the Heart Rate in Massive Pericardial Effusion

A Report of a Case

DENNIS V. COKKINOS M.D.1; CONSTANTINE KELESIDES M.D.1; JOHN SIATERLIS M.D.1; EVANGELOS HALIMOS M.D.1

1 From the Cardiology Department, Corinth General Hospital, Corinth, Greece.

A patient with massive pericardial effusion and electrical alternans was studied. Intravenous administration of 8 mg practolol produced a decrease in heart rate from 120 to 87 beats/min, with increase of the alternans. The postulation that tachycardia is necessary for the appearance of electrical alternans in cardiac tamponade cannot be supported from this finding.


Key Words: Practolol • Beta-adrenergic blocking agents

Submitted on January 8, 1974
Accepted on February 14, 1974






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