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[Pharmacodynamic studies in suicidal digoxin poisoning (author's transl)]
Zeitschrift Fur Kardiologie
|September 1, 1979
Summary
Serum digoxin levels correlate with QTc interval shortening in poisoning cases. T-wave flattening plateaus, but QTc shortening offers a reliable diagnostic marker for digoxin toxicity.
Area of Science:
- Cardiology
- Clinical Toxicology
Background:
- Digoxin poisoning can cause significant cardiac abnormalities.
- Monitoring serum digoxin concentration is crucial for patient management.
Observation:
- Studied two patients with suicidal digoxin poisoning.
- Assessed correlations between serum digoxin levels and ECG changes (QTc duration, T-wave flattening).
Findings:
- T-wave flattening reached a plateau at 2-3 ng/ml serum digoxin.
- A strong linear correlation (r=0.88, 0.92) was observed between serum digoxin concentration and QTc shortening.
- QTc shortening did not show a plateau effect.
Implications:
- QTc shortening is a valuable and rapid diagnostic parameter for digoxin poisoning.
- This ECG parameter can be quickly determined with minimal methodological issues.