Rakovec P, Horvat M, Jakopin J, Kenda M F, Kranjec I, Jagodic A
Pacing Clin Electrophysiol. 1982 Jul;5(4):523-8. doi: 10.1111/j.1540-8159.1982.tb02272.x.
Electrophysiologic studies, including intra-atrial recordings and atrial stimulation, were performed in two patients with suspected sick sinus syndrome. Premature atrial stimuli induced atrial flutter in both patients. The arrhythmia was concealed, i.e., it was recordable only by intracavitary electrogram and invisible on surface electrocardiogram. In one case, simultaneous atrial fibrillation could be recorded in a segment of the right atrium. In this patient, the rhythm on the surface electrocardiogram changed during the study to "upper nodal" rhythm, though the atrial electrogram showed continuation of A waves at the same rate as before during sinus rhythm. It seems that atrial changes, which are frequently encountered in sick sinus syndrome, are a predisposing factor for spontaneous or inducible concealed atrial arrhythmias.
对两名疑似病态窦房结综合征的患者进行了电生理研究，包括心房内记录和心房刺激。过早心房刺激在两名患者中均诱发了心房扑动。该心律失常为隐匿性，即仅通过心腔内电图可记录到，而体表心电图上不可见。在一例患者中，右心房的一段可记录到同时存在的心房颤动。在该患者中，尽管心房电图显示窦性心律期间A波以与之前相同的速率持续存在，但研究期间体表心电图上的心律变为“高位结性”心律。似乎病态窦房结综合征中常见的心房改变是自发性或诱发性隐匿性房性心律失常的一个易感因素。
