Brembilla-Perrot B
Service de cardiologie A, CHU Brabois, Vandoeuvre.
Arch Mal Coeur Vaiss. 1995 Jan;88 Spec No 1:15-23.
Concealed electrical phenomena are activations which penetrate the specialised tissue incompletely, which do not have a direct electrical effect but which usually affect the conduction of the following normal impulse. The phenomena are extremely common. They arise physiologically in the node of Aschoff Tawara and express the relationship between flutter waves and their propagation to the ventricle. Any extrasystole or ectopic rhythm may give rise to these phenomena and modify conduction in the anterograde or retrograde direction if the ectopic rhythm is ventricular, by slowing the rate but also, in some cases, by paradoxically improving it. In addition, some reciprocating nodal tachycardias are due to a concealed bundle of Kent invisible in sinus rhythm, the presence of which may be suspected by the ECG appearances of the reciprocating tachycardia (negative P wave in lead 1, phenomenon of delaying bundle branch block or simply the auriculogram after the ventriculogram.
隐匿性电现象是指激活未能完全穿透特殊组织，虽无直接电效应，但通常会影响随后正常冲动传导的现象。这些现象极为常见。它们在阿绍夫-陶拉结中生理性出现，体现了扑动波与其向心室传播之间的关系。任何早搏或异位心律都可能引发这些现象，并且如果异位心律是室性的，会通过减慢心率，在某些情况下还会反常地加快心率，从而改变顺行或逆行方向的传导。此外，一些折返性结性心动过速是由于在窦性心律中不可见的隐匿性肯特束所致，通过折返性心动过速的心电图表现（I导联负向P波、束支阻滞延迟现象或单纯的心室波后心房波）可能怀疑其存在。
