A focus on pregnancy course and outcomes of women with zero-fluoroscopy catheter ablation during gestation: a 2-year follow-up study

FUNDING ACKNOWLEDGEMENTS: Type of funding sources: None. BACKGROUND: Arrhythmias in pregnant are common clinical problem. Catheter ablation may be required in cases of drug refractory and hemodynamically unstable arrhythmias. Data on further course of pregnancy, perinatal outcomes and results of zero-fluoroscopy catheter ablation in pregnant patients is limited. PURPOSE: we aimed to determine efficacy and safety of zero-fluoroscopy catheter ablation during gestation. METHODS: 54 pregnant indicated for catheter ablation (Mean age of women was 26.2±3.2 years, mean gestation age 23.3 ±2.4 weeks) due to drug refractory. Further course of pregnancy, perinatal outcomes, complications and arrhythmia recurrence checked during 2-year follow-up. RESULTS: Atrioventricular nodal reentrant tachycardia was the most common arrhythmia (n=21; 38.9%). This was followed by Wolff–Parkinson–White syndrome (n=18; 33.3%). In five pregnant was combination of accessory pathways with slow conduction ways (9.3%). Cases of zero-fluoroscopy catheter ablation of ventricular tachycardia (n=2; 3.7%) and premature ventricular contraction (n=8; 14.8%) during gestation were rare. Zero-fluoroscopy catheter ablation successfully performed in all cases (median procedural time was 73±13 minutes). Procedural complication was in one cases (ileofemoral thrombosis). There was no termination of pregnancy after ablation. In five women were increased uterine contractility and uterine blood flow violation (n=5; 9.3%). Preterm delivery was in two cases (3.7%) at 35 and 36 weeks of gestation. Type of delivery was vaginal in the majority (n=42; 77.7%). There were three cases of placental abruption and preeclampsia (5.6%). There were 55 live births (in one case were twins). Fetal birth weight was 3238.7±559.2 grams, 5 minute Apgar was 8.5±1.1. There were no maternal and fetal mortality. At 2-year follow-up there were no arrhythmia recurrence. CONCLUSIONS: Zero-fluoroscopy catheter ablation during gestation may be safe and effective. It is associated with benign pregnancy course, perinatal and neonatal outcomes.