The description of the case concerns a pregnant woman with a history of asymptomatic Wolff – Parkinson – White syndrome (WPW) diagnosed in childhood, who reported three episodes of supraventricular tachycardia during pregnancy. The first two episodes recurred automatically and the third episode of supraventricular tachycardia recurred after intravenous administration of adenosine. During the 38th week of pregnancy, she arrived at the hospital with an automatic rupture of the membranes and the

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... set of labor. The electrocardiogram showed a sinus rhythm at 80 beats / minute, a shortening of the PR interval and an enlargement of the QRS complex. There were positive delta waves. The echocardiographic examination was without pathological findings. Cesarean section was considered necessary due to the sciatic projection of the fetus. The patient was discharged from our clinic on the fifth postoperative day in good health, with instructions from the team of cardiologists for the subsequent treatment of WPW-associated tachyarrhythmia.