Complications
Only four patients (2.0% of CF and 3.9% of control patients) experienced complications. One CF case was successful but resulted in mild aortic insufficiency on follow up echocardiogram. Three control cases had complications including ischemia and ventricular fibrillation (VF), cardiac perforation during transseptal puncture, and a groin hematoma. The ischemic event was identified by ST segment depression, T wave inversion, bradycardia, and hypoxemia; it was likely secondary to sustained ventricular pacing during mapping. The patient went into sustained VF requiring defibrillation to return to normal sinus rhythm. All patients recovered fully from their complications. Minor complications that did not require intervention or extend the patient’s hospital stay were considered insignificant and not recorded.