1. Diagnosis of malignant coronary vasospasm by 12-lead Holter electrocardiogram and optical coherence tomography

    Diagnosis of malignant coronary vasospasm by 12-lead Holter electrocardiogram and optical coherence tomography

    A 73-year-old man presented with recurrent syncopes preceded by angina. Three years earlier, the patient had a pacemaker implanted due to symptomatic sick sinus syndrome. Device interrogation showed several torsade-like ventricular tachycardias (VTs) corresponding with the symptoms. Left ventricular ejection fraction was normal. Coronary angiography revealed diffuse coronary sclerosis and a hazy 50% lesion in the mid left anterior descending artery (LAD), which was treated with a drug-eluting stent. Three days later, the patient experienced another syncope with documentation of ventricular fibrillation by the provided life-vest ( Panel A ). The pacemaker was upgraded to an implantable cardioverter-defibrillator. During subsequent workup, a ...

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