Diaphragmatic Evaluation by Fluoroscopy to Identify Phrenic Nerve Dysfunction Related to Electroporation

Inclusion Criteria: * Men and women aged 18 years or older at the time of signing the consent (age≥ 18). * Diagnosis of paroxysmal or persistent atrial fibrillation, documented in any type of means: ECG, Holter, invasive monitoring (memories of an implantable device) or not (connected objects). * Indication for ablation decided as part of routine care, according to the recommendations of learned societies. * First, ablation procedure (including pulmonary vein isolation) planned with the use of a commercially available Pulsed Field Ablation catheter. * Possibility of performing a fluoroscopic diaphragmatic evaluation before and after the operation (before discharge from the hospital). * Free, informed and signed consent by the patient before any data collection Exclusion Criteria: * Known history of diaphragmatic paralysis (right or bilateral) or pre-existing clinical suspicion. * History of atrial fibrillation ablation. * History of neuromuscular disease. * History of major thoracic surgery or chronic pulmonary pathology that may impair diaphragmatic kinetics. * Evidence of diaphragmatic paralysis on the pre-procedure fluoroscopy loop, defined as: * Cranio-caudal excursion amplitude ≤35 mm on both hemidiaphragms, Or * An asymmetry in contraction amplitude ≥15% between the two sides. * Inability to perform a post-procedure follow-up fluoroscopy (logistical limitation, patient refusal, contraindication to irradiation). * Pregnancy or breastfeeding in progress. * Concurrent participation in another interventional study that may interfere with the objectives of this research. * Major impairment in cognitive function or inability to understand the objectives of the study or sign a valid consent. * Individuals deprived of liberty by judicial or administrative decision. * Adults subject to a legal protection measure (guardianship, curatorship, or judicial protection/safeguard of justice). * Individuals unable to provide informed consent.