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Nodal bradycardia induced by tocainide.
Postgraduate Medical Journal
|April 1, 1983
Summary
Tocainide can cause nodal bradycardia even at recommended doses. Elderly patients may require a lower tocainide dosage to prevent recurrence of this cardiac side effect.
Area of Science:
- Cardiology
- Clinical Pharmacology
Background:
- Tocainide is an oral antiarrhythmic drug.
- Standard dosing guidelines exist for tocainide therapy.
Observation:
- A case report details tocainide-induced nodal bradycardia.
- The adverse event occurred at the standard recommended dose.
Findings:
- Nodal bradycardia resolved upon discontinuation of tocainide.
- The bradycardia did not recur when tocainide was reintroduced at a reduced dosage.
Implications:
- The findings suggest a potential increased sensitivity to tocainide in the elderly.
- Lower starting doses of tocainide may be warranted in geriatric patients.
- This case highlights the importance of dose titration and monitoring for adverse cardiac events with tocainide, particularly in older individuals.