• Jose Maria Vieitez Florez, Arantxa Sánchez Sánchez, Rafael Martínez Moya, Jaime Masjuan Vallejo, Eduardo Franco Díez, Marta Jimenez-Blanco Bravo, Maria Abellas Sequeiros, Alvaro Lorente Ros, Jose Luis Zamorano Gómez, and Gonzalo Luis Alonso Salinas.
• Cardiology Department, Ramón y Cajal University Hospital, Madrid, Spain. Electronic address: chemavieitez@gmail.com.
• Med Clin (Barc). 2022 Sep 23; 159 (6): 278-282.

Introduction And ObjectivesAdvanced interatrial block has been linked with atrial fibrillation (AF) (Bayes syndrome). On the other hand, the aetiology of the stroke remains unknown in approximately 20-25% of patients admitted due to ischaemic stroke. The aim of this study was to evaluate whether advanced interatrial block and CHADS2-VASC scale is linked to AF in patients admitted due to ischaemic stroke without previous AF history.MethodsA prospective analysis of consecutive in-hospital patients admitted with ischemic stroke between January/2018 and April/2019 in a stroke hospital was performed. Patients had to be in sinus rhythm at admission and without previous history of AF/atrial flutter. During follow up patients receive the usual care.ResultsA total of 236 patients were included. The median follow-up was 540 days (407-695). 19 patients (8.1%) had advanced interatrial block at admission. Advanced interatrial block was associated with the diagnosis of AF during follow up (5 (26.3%) Vs 21 (9.7%) p=0.027). A CHADS2-VASC score>4 at admission was also associated with AF diagnosis during follow up (23(14.6%) vs 3(3.9%) p=0.009).ConclusionThis study confirms the association of advanced interatrial block and CHADS2-VASC>4 at admission with the diagnosis of AF during follow up in patients with ischemic stroke. This association could have important implications in patients with ischemic stroke who present advanced interatrial block and without previous history of AF.Copyright © 2021 Elsevier España, S.L.U. All rights reserved.

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