Vicent, LourdesFernández-Cordón, ClaraNombela-Franco, LuisEscobar-Robledo, Luis AlbertoAyesta, AnaAriza Solé, AlbertGómez-Doblas, Juan JoséBernal, EvaTirado-Conte, GabrielaCobiella, JavierGonzález-Saldivar, HugoLópez-Otero, DiegoDíez-Villanueva, PabloSarnago, FernandoArmario, XavierBayés-de-Luna, AntonioMartínez-Sellés, ManuelBaseline Interatrial Block and Transcatheter Aortic Valve Implantation (BIT) Registry Investigators †2023-02-092023-02-092020-11-03http://hdl.handle.net/10668/16533Background The clinical significance of conduction disturbances after transcatheter aortic valve implantation has been described; however, little is known about the influence of baseline ECGs in the prognosis of these patients. Our aim was to study the influence of baseline ECG parameters, including interatrial block (IAB), in the prognosis of patients treated with transcatheter aortic valve implantation. Methods and Results The BIT (Baseline Interatrial Block and Transcatheter Aortic Valve Implantation) registry included 2527 patients with aortic stenosis treated with transcatheter aortic valve implantation. A centralized analysis of baseline ECGs was performed. Patients were divided into 4 groups: normal P wave duration (enAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/ECGTAVITAVRinteratrial blockpacemakerprognosisAgedAged, 80 and overAortic Valve StenosisAtrial FibrillationElectrocardiographyFemaleHumansInteratrial BlockMalePacemaker, ArtificialPostoperative ComplicationsPrognosisRegistriesStrokeTranscatheter Aortic Valve Replacementresearch article33140688open access10.1161/JAHA.120.0176242047-9980PMC7763710https://www.ahajournals.org/doi/pdf/10.1161/JAHA.120.017624https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7763710/pdf