Related Experiment Videos
Programmed ventricular stimulation during variant angina: report of a case
Pacing and Clinical Electrophysiology : PACE
|December 1, 1989
Summary
Coronary artery spasm can trigger ventricular tachycardia and syncope in susceptible individuals. This case highlights the link between coronary spasm, arrhythmias, and fainting, emphasizing the importance of diagnosis and treatment.
Area of Science:
- Cardiology
- Electrophysiology
- Vascular Medicine
Background:
- Syncope and chest pain are common symptoms requiring thorough investigation.
- Programmed ventricular stimulation is a diagnostic tool for inducible arrhythmias.
Observation:
- A 74-year-old patient with syncope and chest pain initially showed no inducible ventricular tachycardia.
- During chest pain and ST elevation, polymorphic ventricular tachycardia was induced.
- Coronary angiography confirmed right coronary artery spasm.
Findings:
- Coronary artery spasm was directly linked to inducible ventricular tachycardia.
- Nitroglycerin resolved both chest pain and the induced arrhythmia.
- The patient remained symptom-free for 12 months on medical management.
Implications:
- Coronary artery spasm is a potential cause of syncope due to ventricular arrhythmias.
- Accurate diagnosis of coronary spasm is crucial for managing patients with unexplained syncope.
- Pharmacological management with calcium channel blockers and nitrates can be effective.