PMC9125101_01
Admission electrocardiogram demonstrating high-grade block with atrioventricular dissociation and an infrahisian escape rhythm with a right bundle branch and left anterior fascicular pattern (corrected QT interval: 480 milliseconds).. Abbreviation: VF, ventricular fibrillation.
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PMC9125101_01_10.1177_23247096221098333-fig1.jpg
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His admission ECG demonstrated AV block with an infrahisian escape rhythm with a right bundle branch and left anterior fascicular pattern suggesting a left posterior fascicular origin of escape (Figure 1).
Representative electrocardiographic tracing from continuous cardiac monitoring demonstrating pause-dependent polymorphic ventricular tachycardia in the setting of high-grade atrioventricular block.
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Upon arrival to the MICU, his rhythm quickly degenerated into polymorphic ventricular tachycardia leading to cardiac arrest (Figure 2).
Postarrest electrocardiogram demonstrating high-grade atrioventricular block and short-coupled R-on-T premature ventricular contractions triggering non-sustained polymorphic ventricular tachycardia.. Abbreviation: VF, ventricular fibrillation.
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In the immediate post-resuscitation period, his rhythm continued to demonstrate high-grade AV block and short-coupled R-on-T premature ventricular contractions triggering non-sustained polymorphic ventricular tachycardia (Figure 3).