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Revista Colombiana de Cardiología
Print version ISSN 0120-5633
Abstract
MOHAN-GOYAL, Brij et al. Severe primary hypothyroidism presenting as polymorphic ventricular tachycardiaHipotiroidismo primario grave que se presenta como taquicardia ventricular polimórfica. Rev. Colomb. Cardiol. [online]. 2022, vol.29, suppl.4, pp.34-37. Epub Dec 20, 2022. ISSN 0120-5633. https://doi.org/10.24875/rccar.m22000191.
Introduction:
Hypothyroidism may have various cardiovascular manifestations due to morphological, functional and electrical alterations in the heart. The usual electrocardiographic findings being sinus bradycardia, low voltage complexes, and slowed intraventricular conduction. Hypothyroidism manifesting as polymorphic ventricular tachycardia has only been reported in a few case reports.
Clinical case.
A 60-year-old lady presented to us in the emergency department in an unresponsive and unconscious state and electrocardiogram showed a polymorphic ventricular tachycardia. After initial resuscitation with direct current cardioversion and supportive care, she found to have severe hypothyroidism and responded well to thyroid replacement therapy.
Conclusion.
Polymorphic ventricular tachycardia is a life threatening emergency that can have various etiologies. Polymorphic ventricular tachycardia secondary to primary hypothyroidism is a rare presentation but it is treatable and reversible with thyroid replacement therapy. In patients presenting with QT interval prolongation and ventricular tachycardia, hypothyroidism should be one of the differential diagnosis.
Keywords : Hipotiroidismo; Taquicardia ventricular polimórfica; Intervalo QT; Torsades de pointes; Choque cardiogénico.