Fundación Santa fe de Bogotá, Colombia; Universidad el Bosque, Colombia; Universidad de los Andes, Colombia.
Fundación Santa fe de Bogotá, Colombia; Universidad Nacional, Colombia.
J Electrocardiol. 2021 May-Jun;66:38-42. doi: 10.1016/j.jelectrocard.2021.02.009. Epub 2021 Feb 25.
Right Bundle Branch Block (RBBB) has been reported in 5-11% of the acute myocardial infarctions (AMI), and it could be the only electrocardiographic abnormality in this group of patients. We investigated the mortality in patients with AMI and the presence of RBBB.
A retrospective cohort study was conducted between January 2011 to December 2017 at a university hospital in Bogotá, Colombia. Records were obtained from all patients who presented at the emergency department with AMI; patients with early transfer and incomplete follow-up were excluded.
1015 patients were included, the mean age was 66 years, 67% of the patients were men, and 38% had STEMI. RBBB was documented in 8% of patients and LBBB in 4% of patients. In-hospital mortality was higher in the group of patients with RBBB vs. patients without RBBB (8.64% vs. 3.74%, p = 0.034). The percentage of patients with Killip ≥II classification was higher in patients with new RBBB vs. patients with old or unknown duration RBBB (23% vs. 13%, p = 0.216).
In patients with AMI, the presence of RBBB was associated with a statistically significant increase of in-hospital mortality.
右束支传导阻滞（RBBB）在急性心肌梗死（AMI）患者中占 5-11%，并且可能是该组患者中唯一的心电图异常。我们研究了 AMI 患者的死亡率和 RBBB 的存在。
这是一项在哥伦比亚波哥大的一所大学医院进行的回顾性队列研究。该研究纳入了 2011 年 1 月至 2017 年 12 月期间因 AMI 就诊于急诊部的所有患者的记录；排除了早期转院和随访不完整的患者。
共纳入 1015 例患者，平均年龄为 66 岁，67%的患者为男性，38%为 ST 段抬高型心肌梗死。8%的患者存在 RBBB，4%的患者存在左束支传导阻滞。与无 RBBB 的患者相比，有 RBBB 的患者住院期间死亡率更高（8.64% vs. 3.74%，p=0.034）。与陈旧或未知持续时间的 RBBB 患者相比，新发 RBBB 患者中 Killip 分级≥Ⅱ级的患者比例更高（23% vs. 13%，p=0.216）。
在 AMI 患者中，RBBB 的存在与住院期间死亡率的显著增加相关。
