Atrial Flutter Secondary to Digitalis Toxicity

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Abstract
Sixteen cases of atrial flutter due to digitalis toxicity are analyzed. Significant digitalis overdosage, severe heart disease with associated factors sensitizing to digitalis, and symptoms of digitalis toxicity are characteristic. Two of the three patients with no heart disease had massive overdosage. Thus, toxicity can be strongly suspected in this arrhythmia on clinical grounds. Every patient had one or more of the following a slow ventricular rate (less than 90 per minute), a high degree of atrioventricular block (3:1 or more), varying atrioventricular block, or frequent premature ventricular beats with a rapid ventricular rate.

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