Abstract：Objective To investigate the clinical significance of 24hour ambulatory electrocardiography (AECG) in patients with pacemaker implantation. Methods A total of 65 patients with pacemaker implantation were selected as research subjects, and all of them both underwent routine 12 lead electrocardiogram(ECG) and 24hour AECG. The detection rates of pacemaker dysfunction \[abnormal pacing, and abnormal perception (absence of atrial perception, atrial over perception, absence of ventricular perception and ventricular over perception)\], special functions of pacemaker (pacing mode switching, frequency response, frequency lag, dynamic threshold monitoring and ventricular pacing management), self arrhythmias (atrial tachycardia, paroxysmal atrial fibrillation, atrial premature beats and premature ventricular beats), and pacemaker mediated arrhythmias (atrioventricular block, pacemaker mediated tachycardia, rapid rate and ventricular escape) separately by the two examination methods were compared. Results By using 24hour AECG, the detection rates of pacemaker dysfunction and abnormal perception, and special functions of pacemaker such as pacing mode switching and frequency response were all significantly higher than those of routine ECG (P<0.05). The detection rates of self arrhythmias and pacemaker mediated arrhythmias were also significantly higher than those of routine ECG (P<0.05). Conclusion The 24-hour AECG examination could effectively detect the working state of pacemaker in patients implanted with pacemaker, and sensitively make judgment of pacemaker dysfunction and cardiovascular events such as arrhythmias.
