Observation of Renal Function after Multiple DE-MRI Examinations in Atrial Fibrillation Ablation Patients Without Kidney Diseases

Methods MRI was performed in 40 patients (27 males, age 62±9 years) who were scheduled for pulmonary vein isolation (PVI) and had a glomerularfiltration rate (GFR) of >30ml/min. A total of three MRIs were acquired prior to, directly after and 24 hours after PVI, using weightdependent dosages of gadolinium pententat (Gd-DPTA). 46,8±14,9 ml Gd-DPTA was given within a 3±1 day period. Renal function [defined as serum creatinine, blood urea nitrogen (BUN) and GFR] was measured before, acutely after and 12±2 weeks after the procedure. During follow-up, patients were examined for symptoms of NSF.