Resumen: Temporary epicardial pacing is commonly used for rhythmic support in the acute postoperative period after cardiac surgery. Clinical studies suggest that pacing in the left ventricular epicardium during resynchronization therapy may be proarrhythmic in a minority of patients. The epicardial pacing increases transmural heterogeneity of repolarization. This could prolong the QT and JT intervals on the electrocardiogram (ECG), with subsequent proarrhythmic effects. The following case describes polymorphic ventricular arrhythmias after temporary epicardial ventricular stimulation. Idioma: Inglés DOI: 10.1016/j.hrcr.2017.07.008 Año: 2017 Publicado en: HeartRhythm case reports 3, 12 (2017), 571-573 ISSN: 2214-0271 Factor impacto SCIMAGO: 0.232 - Cardiology and Cardiovascular Medicine (Q3)