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[Iatrogenic collapse; can this be prevented?]
N M Panhuyzen-Goedkoop1, H J Crijns
1Diakonessenhuis, afd. Cardiologie, Utrecht.
Nederlands Tijdschrift Voor Geneeskunde
|February 8, 1997
Summary
Drug-induced long QT syndrome can cause collapse in patients with a concealed condition. Clinicians must consider drug side effects and patient cardiac health when prescribing antiarrhythmic medications.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Long QT syndrome (LQTS) is a cardiac repolarization disorder that can lead to life-threatening arrhythmias.
- Certain medications and underlying cardiac conditions can exacerbate or unmask LQTS.
Observation:
- Four patients (two men, two women; ages 35-87) presented with collapse.
- Administration of Q-T time prolonging drugs, including sotalol, erythromycin, and disopyramide, was identified as the likely cause in these patients.
Findings:
- The patients exhibited a 'concealed long Q-T syndrome', a form of LQTS not apparent without specific triggers.
- Drug-induced Q-T prolongation was the precipitating factor for collapse in these individuals.
Implications:
- Healthcare providers must maintain awareness of the proarrhythmogenic potential of various drugs, particularly antiarrhythmics.
- Careful patient selection and monitoring are crucial when prescribing medications that affect cardiac repolarization, especially in individuals with underlying cardiac disease or susceptibility to LQTS.