Abstract：Objective To study the manifestations of long RP tachycardia on ambulatory electrocardiography(AECG) and its differential diagnostic basis. Methods By 12channel AECG recorder, 35 patients with long RP tachycardia were monitored. At the attack of tachycardia, we made comparative analysis on its states of induction and termination, duration, frequency, P-wave polarity, clinical characteristics, etc. Results The enrolled 35 patients were divided into 3 groups: separately with persistent atrioventricular reentrant tachycardia(PAVRT), atrial tachycardia(AT), and fastslow atrioventricular nodal reentrant tachycardia(F-S-AVNRT). Among the 3 groups, P waves were inverted in Ⅱ, Ⅲ and aVF leads, aVR leads were upright, and RP intervals were all longer than PR intervals, at the onset of tachycardia. The attack of 6 cases of PAVRT was endless, tachycardia accounting for 32.8%—50.0% in the total heartbeats during 24 hours, with an attacking frequency ranging from 110 times/min to 160 times/min, which was induced by premature ventricular beats. AT was induced by atrial premature beats in 15 cases, with the number of onset episodes ranging from 1 to 186, and onset frequency 107—150 times/min. F-S-AVNRT in 2 cases was induced by atrial premature beats accompanied with prolonged PR intervals, with an attack frequency ranging from 127 times/min to 182 times/min. Atrial flutter complicating 2 ∶1 atrioventricular conduction in 12 cases was induced by atrial premature beats; Its onset ventricular rate ranged from 120 times/min to 165 times/min, and the ventricular rate reached 150 times/min when the conditions of the Bix law was met. Conclusion AECG monitoring plays a significant role in identifying the states of induction and termination, duration, and frequency during the onset of long RP tachycardia. It helps to diagnose the disease.
张麟, 李波, 纳志英, 尹琳, 王月, 冯夏. 长RP心动过速的动态心电图研究[J]. 实用心电学杂志, 2015, 24(1): 62-65.
ZHANG Lin, LI Bo, NA Zhi-Ying, YIN Lin, WANG Yue, FENG Xia. Research on ambulatory electrocardiography of long RP tachycardia. JOURNAL OF PRACTICAL ELECTROCARDIOLOGY, 2015, 24(1): 62-65.
2015, Vol. 24 
