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Torsade de pointes.

P T Munro1, C A Graham

  • 1Department of Accident and Emergency Medicine, Southern General Hospital, 1345 Govan Road, Glasgow G51 4TF, UK. PHIL.MUNRO@sgh.scot.nhs.uk

Emergency Medicine Journal : EMJ
|September 3, 2002
PubMed
Summary
This summary is machine-generated.

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A case study highlights torsade de pointes in a woman with prolonged QTc interval, potentially worsened by sotalol. This review covers QTc prolongation physiology, causes, and treatment options.

Area of Science:

  • Cardiology
  • Clinical Electrophysiology
  • Pharmacology

Background:

  • QTc prolongation is a risk factor for potentially fatal arrhythmias.
  • Sotalol, a Class III antiarrhythmic, can prolong the QTc interval.
  • Torsade de pointes (TdP) is a specific ventricular tachycardia associated with QTc prolongation.

Observation:

  • A 41-year-old woman with pre-existing QTc prolongation experienced TdP and ventricular fibrillation.
  • Her condition was potentially exacerbated by sotalol treatment.
  • Previous cardiac investigations were normal, necessitating electrophysiological studies.

Findings:

  • The case illustrates a severe manifestation of drug-induced or exacerbated QTc prolongation.
  • Electrophysiological studies were crucial for diagnosis and management planning.

Related Experiment Videos

  • The patient's history underscores the importance of monitoring QTc intervals in at-risk individuals.

    • Implications:

    • This case emphasizes the need for careful patient selection and monitoring when prescribing QTc-prolonging medications like sotalol.
    • Understanding the interplay between pre-existing conditions and drug effects is vital for preventing life-threatening arrhythmias.
    • Further research into personalized risk stratification for QTc prolongation and TdP is warranted.