Related Experiment Video
Updated: Jan 25, 2026

Dual-Dye Optical Mapping of Hearts from RyR2R2474S Knock-In Mice of Catecholaminergic Polymorphic Ventricular Tachycardia
Published on: December 22, 2023
Coronary vasospasm-induced polymorphic ventricular tachycardia: a case report and literature review
Nigel S Tan1, Fahad Almehmadi2, Anthony S L Tang2
1Department of Medicine, University of Toronto, 399 Bathurst Street, East Wing 5-470, Toronto, ON M5T2S8, Canada.
Introduction:
Coronary vasospasm is an uncommon but important cause of myocardial ischaemia and ventricular arrhythmias.
Case Presentation:
In this report, we present a striking example of vasospasm manifesting as ST-segment elevation and ventricular tachycardia on Holter monitoring. Later, spasm occurred during a procainamide challenge performed for suspected Brugada syndrome. The patient underwent implantable cardioverter-defibrillator insertion and was successfully treated with oral calcium channel blocker.
Discussion:
We review contemporary data regarding management and outcomes in coronary vasospasm and discuss the use of implantable defibrillator therapy in patients who have sustained a significant arrhythmic event.
More Related Videos
06:57Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
Published on: January 31, 2019
10:08Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
Published on: February 17, 2018
Related Concept Videos
Review and Preview
Percentiles are a type of fractile that partition data into...
Review and Preview
Single Nucleotide Polymorphisms-SNPs
Data Reporting and Recording
Factors Affecting Dissolution: Polymorphism, Amorphism and Pseudopolymorphism
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...