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| Electrophysiological mechanisms revealed by proximal caliper shaped patterns in Lorenz-RR scatter plot of ventricular pacing |
| DAI Jing1, LI Zelin2, LONG Youling1,BI Yanfang1, WANG Ya1, SUN Qinxue3 |
| (1. Department of Electrophysiology, Kunming Municipal Hospital of Traditional Chinese Medicine, Kunming Yunnan 650051; 2. Department of Special Inspection, Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou Zhejiang 310003; 3. the First Clinical College, Kunming Medical University, Kunming Yunnan 650500,China） |
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Abstract The different manifestations of pacing Lorenz-RR scatter plot in ambulatory electrocardiography(AECG) help to judge the property of the pacing electrocardiogram (ECG). The calipershaped pattern proximal to the 45° line of the Lorenz-RR scatter plot of ventricular pacing reveals the electrophysiological mechanisms behind the scatter plot characteristics. The Wenckebach phenomenon caused by the behavior of the pacemaker’s upper limit tracking frequency, that is, the upper limit tracking frequency set by pacemaker and (or) upper limit tracking frequency, indicates that the implanted pacemaker has been working in a tracking mode. This paper selects two cases with calipershaped patterns proximal to the 45° line of the Lorenz-RR scatter plot of ventricular pacing, analyzes different manifestations of AECG by reverse analysis technique, and identifies the modern functional operation related to pacemakers, so as to clarify its brand and judge its functions.
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