Overdrive Pacing for Persistent Torsades de Pointes and Pulseless Ventricular Tachycardia

Area of Science:

• Cardiology
• Clinical Toxicology
• Pharmacology

Background:

• Benzodiazepine medications, including nimetazepam, are commonly prescribed for sleep disturbances.
• Drug abuse can lead to severe and unexpected adverse health events.
• Malignant cardiac arrhythmias pose a significant threat to patient survival.

Purpose of the Study:

• To report a case of severe cardiac arrhythmias induced by nimetazepam abuse.
• To highlight the importance of considering drug-induced causes in patients presenting with unexplained arrhythmias.
• To describe the successful management of drug-induced torsades de pointes and ventricular tachycardia.

Main Methods:

• Case report of a 53-year-old male patient.
• Review of cardiac monitoring data revealing torsades de pointes and pulseless ventricular tachycardia.
• Electrolyte correction and temporary overdrive pacing as therapeutic interventions.
• Clinical assessment of patient recovery and arrhythmia recurrence.

Main Results:

• The patient presented with recurrent, life-threatening cardiac arrhythmias following nimetazepam abuse.
• Standard electrolyte correction was insufficient to resolve the arrhythmias.
• Temporary overdrive pacing was necessary to stabilize the cardiac rhythm.
• The patient experienced an uneventful recovery with no arrhythmia recurrence after pacing removal.

Conclusions:

• Nimetazepam abuse can precipitate severe and persistent ventricular arrhythmias.
• Management of drug-induced arrhythmias may require advanced interventions like temporary pacing.
• Early identification of substance abuse is critical in patients with unexplained cardiac events.