Jairath U C, Spodick D H
Division of Cardiovascular Disease, Saint Vincent Hospital at Worcester Medical Center, Massachusetts 01608, USA.
Clin Cardiol. 2001 Aug;24(8):548-50. doi: 10.1002/clc.4960240805.
Interatrial block (IAB: P wave > or = 110 ms) is a strong correlate of left atrial (LA) enlargement and an important predictor of supraventricular tachyarrhythmias, notably atrial fibrillation and flutter. It is surprising that, despite its association with arrhythmias and its effects on the electromechanical properties of the left atrium, there is widespread neglect of this common abnormality.
The study was undertaken to investigate the prevalence of IAB in a general hospital population.
We prospectively evaluated the electrocardiograms of 1,000 consecutive adult patients. analyzed for P-wave duration.
Our results showed a very high prevalence of IAB (41.1% of patients in sinus rhythm and 32.8% of all patients). As expected, it was more common in patients aged > 60 years.
Given this unusually high prevalence of IAB in hospital patients and its ominous portents (LA enlargement. thrombosis and embolism, arrhythmias), physicians should be aware of its frequency and computer software should be programmed to recognize it.
房间阻滞（IAB：P波≥110毫秒）与左心房（LA）扩大密切相关，是室上性快速心律失常尤其是心房颤动和扑动的重要预测指标。令人惊讶的是，尽管它与心律失常有关且对左心房的电机械特性有影响，但这种常见异常却普遍被忽视。
本研究旨在调查综合医院人群中IAB的患病率。
我们前瞻性地评估了1000例连续成年患者的心电图，分析P波时限。
我们的结果显示IAB患病率非常高（窦性心律患者中占41.1%，所有患者中占32.8%）。正如预期的那样，它在年龄>60岁的患者中更常见。
鉴于IAB在住院患者中异常高的患病率及其不良预兆（LA扩大、血栓形成和栓塞、心律失常），医生应意识到其发生频率，计算机软件应编程以识别它。
