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第三节心律失常心电图 2.室性逸搏 (1)概念:逸搏的起源点在房室束以下者称室性逸搏。当窦房结及房室连接区的频率过慢或不能下传时,就有可能出现室性逸搏。如果激动起源于房室束内。则QRS为室上性型(此型与房室连接区性逸搏不易区别,但通常室性逸搏不伴有逆行P波,而且QRS形态可略有变化)。如激动起源于房室束分叉以下,则QRS显著增宽及畸形。
Section III arrhythmia ECG 2. Ventricular Yat (1) concept: Yat stroke of the origin point in the atrioventricular bundle said ventricular escape. When the sinus node and atrioventricular junction area of the frequency is too slow or can not be downloaded, there may be ventricular escape. If the excitement originated in the atrioventricular bundle. QRS is supraventricular (this type of atrioventricular junctional esophageal difficult to distinguish, but usually ventricular escape without retrograde P wave, and QRS morphology may vary slightly). If the excitement originates from the bifurcation of the atrioventricular bundle, QRS is significantly broadened and deformity.