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Abstract Objective To explore whether there exists circadian rhythm in the duration of paroxysmal atrial fibrillation(PAF) and the relationship between PAF and gender, age and left atrial diameter(LAD). Methods In our study, PAF group consisted of 66 PAF inpatients or outpatients who had undergone 24hour ambulatory electrocardiography(AECG) examination in our hospital. Another 60 inpatients were randomly selected as control group with atrial fibrillation (AF) excluded by AECG examination. Among 66 PAF cases, AECG data were analyzed and the duration of AF in each time period was recorded. At the same time, we compared gender, age and LAD between the two groups. Results The onset and duration of PAF followed circadian rhythm and were closely related to PAF patients age, LAD and other factors. Conclusion AECG examination is worthy of being popularized in PAF patients for its simplicity to operate, safety, reliability and good reproducibility.
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