Ventricular premature beats in a pregnant woman originating from trabeculae carneae in the right ventricle treated with radiofrequency ablation without X-ray guidance: a case report

Premature ventricular beats increase the cardiac load in pregnant women, leading to symptoms, such as palpitations. In severe instances, they may reduce placental perfusion, potentially causing intrauterine distress and developmental delays in the fetus, which could result in miscarriage or stillbirth. Fluoroscopy-less ablation offers significant advantages for pregnant women, including reduced radiation exposure, enhanced treatment precision, and a lower incidence of postprocedure complications. This case describes how radiofrequency catheter ablation was used on a pregnant Chinese woman who was identified with frequent ventricular premature beats originating from the high septal margin trabeculae carneae of the right ventricle. The rarity of this premature beat focus poses challenges for electrophysiology mapping and ablation; however, the ablation ultimately succeeded. In this case report, the clinical manifestations, electrocardiogram, ablation procedure, and patient prognosis are reported and discussed. X-ray free ablation clearly reduces radiation exposure while maintaining a high success rate and safety of the ablation procedure.