ความชุกของภาวะหัวใจเต้นผิดจังหวะแบบ sinus arrhythmia ในนายทหารนักเรียนหลักสูตรราชวัลลภ ประจำปี 2550

Abstract

Sinus arrhythmia is an arrhythmia that can be seen commonly in clinical practice. The  prevalence of  sinus arrhythmia varies considerably depending on the population studied. The previous studies from western countries  showed higher prevalence of this arrhythmia in younger people and in persons who have high vagal activity  such as in athletes. In Thailand the prevalence of sinus arrhythmia was available only in few studies. The prevalence of sinus arrhythmia in those studies was very low. There has been no previous report of the prevalence  of sinus arrhythmia in Thai Army officers before. Objective: To identify the prevalence of sinus arrhythmia in officers attending royal guard training course and study the baseline patient characteristics that are associated with increase prevalence of this arrhythmia. Methods: This is a cross sectional descriptive study that was performed in officers attending royal guard training course. Patient demographic data was collected. Electrocardiography was performed in all patients. The prevalence of sinus arrhythmia was identified and the relationship between each patient demographic data and the prevalence of sinus arrhythmia was studied. Results: There were 56 officers included in the study. All officers were male. The mean age was 30.23 ± 7.12 year.  Mean height weight and body mass index (BMI) were 169.79 ± 5.35 centimeters 65.30 ± 9.14 kilograms and 22.60 ± 2.49 respectively. The mean systolic diastolic blood pressure and mean heart rate were 116.57 ±8.26  mmHg 71.89 ± 8.32 mmHg and 60.57 ± 9.01 beat per minute respectively. Sinus arrhythmia was found in 30/56  officers (53.57%). The patient characteristics that were significantly correlated with increased prevalence of sinus   rrhythmia included age < 35 year (OR=9.95% CI= 2.18-37.20 p=0.001) BMI < 23 (OR=4.95% CI = 1.23-13.01 p = 0.025) and heart rate < 60 bpm (OR=3.38, 95% CI=1.12-10.22, p=0.035). here was no correlation  betweenpatient  characteristic and the magnitude or degree of sinus arrhythmia. Conclusion: The prevalence of sinus arrhythmia  in this study is 53.57%. Sinus arrhythmia was found more commonly in younger officers officers with normal  BMI and in officers with bradycardia. The prevalence of sinus arrhythmia in this study is much higher than  the report from other studies in different population in Thailand.