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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
PubMed
Summary
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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.

Related Experiment Videos

  • 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.