[Bayes' syndrome in cardiac surgery: prevalence of interatrial block in patients younger than 65 years undergoing cardiac surgery and association with postoperative atrial fibrillation].

Autor: García-Izquierdo Jaén E; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España. Electronic address: usegij@gmail.com., Cobo Rodríguez P; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España., Solís Solís L; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España., Pham Trung C; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España., Jiménez Sánchez D; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España., Sánchez García M; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España., Castro Urda V; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España., Toquero Ramos J; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España., Fernández Lozano I; Unidad de Arritmias, Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España.
Jazyk: Spanish; Castilian
Zdroj: Archivos de cardiologia de Mexico [Arch Cardiol Mex] 2018 Dec; Vol. 88 (5), pp. 369-375. Date of Electronic Publication: 2017 Nov 03.
DOI: 10.1016/j.acmx.2017.09.004
Abstrakt: Objective: Interatrial block (IAB) is a well-known entity that is associated with an increased risk of atrial fibrillation (AF). This association is called Bayes' syndrome. The aim of our study was to define the prevalence of IAB among patients younger than 65 years undergoing cardiac surgery and determine whether there is an association between the presence of interatrial conduction delay and postoperative atrial fibrillation (POAF).
Method: A total of 207 patients were enrolled. Partial IAB was defined as P-wave>120ms. Advanced IAB was defined as P-wave>120ms+biphasic morphology in the inferior leads. Ocurrence of POAF was assessed and a comparative analysis was conducted between patients that did and did not develop AF.
Results: IAB prevalence was 78.3% (partial 66.2%, advanced 12.1%). POAF occurred in 28.5% of all patients, and was more frequent among patients with advanced IAB (44%) compared to 27.7% and 24.4% of POAF among patients with partial IAB and without IAB, respectively. Patients who developed POAF were significantly older, had significantly higher NTproBNP, higher prevalence of atrial enlargement and thyroid disease. After multivariate analysis, advanced IAB was found to be independently associated with POAF.
Conclusions: IAB is a frequent finding among patients undergoing cardiac surgery. According to our results, advanced IAB is independently associated with POAF in younger patients (<65 years) undergoing cardiac surgery.
(Copyright © 2017 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.)
Databáze: MEDLINE