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继发孔型房间隔缺损系由于继发间隔发育不良或原发房间隔组织被吸收过多,致第二房间孔不能闭合所致,占先天性心脏病发病总数的5%~10%[1]。继发孔型房间隔缺损最常见心电图改变是不完全性右束支阻滞[2]。近年来下壁导联钩型R波作为一种新的独立的心电图征象日益受到国内外学者的关注[3-4]。然而上述心电图改变常出现在缺损较大、伴房室肥大或肺动脉高压时。本研究收集了115例缺
Secondary type of atrial septal defect due to secondary septal dysplasia or primary atrial septal tissue is absorbed too much, resulting in the second room can not be closed due to the hole, accounting for the total number of congenital heart disease incidence of 5% to 10% [1 ]. Secondary percussion atrial septal defect the most common ECG changes are incomplete right bundle branch block [2]. In recent years, the hook-guided R wave of the inferior wall lead has drawn more and more attention from domestic and foreign scholars as a new independent ECG sign [3-4]. However, the ECG changes often appear in the larger defect, with atrioventricular hypertrophy or pulmonary hypertension. This study collected 115 cases of absence