Why the study?
Atrial tachycardia with block is usually considered caused by digitalis intoxication, but this association has not been clearly confirmed in patients with organic heart disease.
Is atrial tachycardia with block commonly caused by digitalis intoxication in patients with organic heart disease?
Comparison
Patients with atrial tachycardia with block with varying serum digitoxin concentrations
Design
Observational case series
Key result
Atrial tachycardia with block was seldom caused by digitalis intoxication, as 0 of 31 patients fulfilled Lown's criteria for digitalis as the aetiological factor.
Authors
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Challenges prior attribution of atrial tachycardia with block to digitalis; hypothesis-generating and should not yet change practice.
Observational (n=31)
Is atrial tachycardia with block commonly caused by digitalis intoxication in patients with organic heart disease?
Atrial tachycardia with block is seldom caused by digitalis intoxication in patients with organic heart disease, contrary to previous reports.
Storstein et al. (1974) conducted an observational in Atrial tachycardia with block (n=31). Digitalis was evaluated on Fulfillment of Lown's criteria for digitalis intoxication. Atrial tachycardia with block was seldom caused by digitalis intoxication, as 0 of 31 patients fulfilled Lown's criteria for digitalis as the aetiological factor.