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February 1, 1974HeartOpen Access

Digitalis and atrial tachycardia with block.

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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

OSO StorsteinKRKlaus Rasmussen

Discussion

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Member takes

Overview

Challenges prior attribution of atrial tachycardia with block to digitalis; hypothesis-generating and should not yet change practice.

Study Design

Type

Observational (n=31)

Structured PICO

Is atrial tachycardia with block commonly caused by digitalis intoxication in patients with organic heart disease?

P
Population
31 patients with 44 episodes of atrial tachycardia with block, mostly with valvular or congenital heart disease referred for cardiac surgery.
O
Outcome
Aetiological role of digitalis intoxication in atrial tachycardia with block

Atrial tachycardia with block is seldom caused by digitalis intoxication in patients with organic heart disease, contrary to previous reports.

Limitations

  • Findings may be related to the special type of patients treated, as most had valvular or congenital heart disease and were referred for cardiac surgery.
  • Special type of patients treated (most had valvular or congenital heart disease and were referred for cardiac surgery)

Cite This Study

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.

synapsesocial.com/papers/6aa86352ebec0848581e983bhttps://doi.org/10.1136/hrt.36.2.171
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