<![CDATA[Background: Cardiovascular diseases (CVD) are responsible for the leading cause of a 30% global mortality rate and are a major contributor to reducing the quality of life. Approximately 25% of the cardiovascular mortality rate is caused by sudden cardiac deaths and cardiac arrhythmias are one of the causes of sudden cardiac deaths. Besides that, Congenital Heart Disease (CHD) also contributes mortality rate in children. Long-term experience has provided evidence that systematic screening, with 12-lead ECG, after history and physical examination, is effective in identifying individuals with potentially lethal cardiovascular disease for early intervention. However, in Indonesia screening for heart abnormalities and rhythm disorder in children has not yet been systematically established. Method: This study was a descriptive study conducted through a cross-sectional study design. The primary objective was to assess the congenital heart disease (CHD) and Arryhtmia prevalence in children in Rantau City. Data was collected from interviews and on-the-spot examination with validated measurement tools. Data was analyzed using SPSS version 26. Categorical variables were presented using frequency (n) and percentage (%), and numerical variables with normally distributed data were presented with mean and standard deviation (SD). In non-normally distributed data, numerical variables were presented using the median and interquartile range. Results: There were 157 children included in this study. Most subjects were female (n=94, 59.9%) in the age range of 12 to 16 years old. Most subjects (n=129, 82.2%) had normal sinus rhythm. The only rhythm disorder that was found in this study was sinus tachycardia (n=28, 17,8%). One subject (0,9%) had congenital heart disease, which was a secundum atrial septal defect. Conclusion: In the children population in Rantau-Prapat city, the most common arrhythmia found in children was sinus tachycardia. The atrial septal defect was the only congenital heart disease found.]]>
