BACKGROUND:

Cardiac arrhythmias are frequent complications in pregnancy, the most of them are benign and don’t need specific treatment. Idiopathic ventricular tachycardia usually is hemodynamically stable and associate with a good prognosis.

CLINICAL CASE:

A 22-year-old woman with a current pregnancy of 23.4 weeks of gestation that began with dizziness and palpitations, she went to the emergency department, a 12-lead electrocardiogram showed a wide QRS tachycardia with fusion beats and atrioventricular dissociation, the echocardiogram was reported normal. Posterior fascicular ventricular idiopathic tachycardia was concluded. Initially, Verapamil and Amiodarone were administered for 48 hours, with tachycardia persisting, so it was decided to perform electrical cardioversion with 200 Joules that was effective. She remained asymptomatic until the 31st week of gestation where she started again with palpitations, the same tachycardia was documented and it was decided to perform again electrical cardioversion with 200 joules, being effective and without complications.

CONCLUSIONS:

Idiopathic ventricular tachycardia occurs with low frequency in pregnancy. When pharmacological therapy is not effective or there is hemodynamic instability, electrical cardioversion is a viable option in the pregnant patient.

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