Chhabra Lovely, Srinivasan Indu, Sareen Pooja, Anand Curuchi, Spodick David H
Department of Internal Medicine, Saint Vincent Hospital, University of Massachusetts Medical School, Worcester, MA 01608, USA.
Indian J Gastroenterol. 2012 Jul;31(4):191-4. doi: 10.1007/s12664-012-0194-0. Epub 2012 Jul 5.
Interatrial block (IAB; P-wave duration ≥110 milliseconds) denotes a conduction delay between the two atria. IAB has been shown to have a strong correlation with atrial arrhythmias, left atrial enlargement, left atrial electromechanical dysfunction and cerebral thromboembolism. Our study sought to determine whether there was an increased incidence of IAB in patients with acute occlusive mesenteric ischemia. Medical records of patients admitted with a diagnosis of acute mesenteric ischemia (AMeI) from January 2009 to March 2011 were reviewed retrospectively. One hundred seventy-two out of 342 patients reviewed, qualified after excluding mechanical surgical obstruction, suspected non-occlusive mesenteric ischemia due to shock/hypoperfusion, and mesenteric venous thrombosis. Of 99 patients who were in normal sinus rhythm without prior history of atrial arrhythmia, 88 (88.9 %) had IAB. This was more than twice the average prevalence of IAB of two general hospital populations (41 % and 47 % as demonstrated by two previous studies). IAB may thus represent a novel risk factor for AMeI as it does for embolic stroke.
房内阻滞（IAB；P波时限≥110毫秒）表示两心房之间的传导延迟。已证明IAB与房性心律失常、左心房扩大、左心房机电功能障碍和脑栓塞密切相关。我们的研究旨在确定急性肠系膜缺血患者中IAB的发生率是否增加。回顾性分析了2009年1月至2011年3月期间诊断为急性肠系膜缺血（AMeI）的患者的病历。在342例接受评估的患者中，排除机械性手术梗阻、因休克/低灌注疑似非闭塞性肠系膜缺血和肠系膜静脉血栓形成后，172例符合条件。在99例无房性心律失常病史且处于正常窦性心律的患者中，88例（88.9%）有IAB。这是两家综合医院人群IAB平均患病率（两项先前研究显示分别为41%和47%）的两倍多。因此，IAB可能是AMeI的一个新的危险因素，就像它是栓塞性中风的危险因素一样。
