Objective: To find out the pattern of CHD and associated risk factors among children presenting at a tertiary care hospital.

Study Design: A case-control study.

Place and Duration of the Study: The Department of Pediatrics and Department of Cardiology, Sheikh Khalifa Bin Zayed Al Nahyan Hospital, Rawlakot from July 2020 to June 2021.

Material and Methods: A total of 207 children of both genders, screened by ECG along with chest x-ray and further confirmed with the diagnosis of CHD through echocardiography were enrolled as cases. Same number of healthy controls (n=207) were recruited from immunization center of the study institution. Among cases, types of CHD were noted. For cases and controls, demographic, antenatal and maternal risk factors including maternal age, gender of the child, history of consanguinity, history of febrile illness in pregnancy, use or multi-vitamin or folic acid in pregnancy, bad obstetrical history and maternal diabetes mellitus were noted.

Results: In a total of 414 children (207 cases and 207 controls), there were 219 (53.8%) male. In terms of CHD types among cases, VSD was the most noted in 62 (30.0%), ASD 35 (16.9%), TOF 33 (15.9%) and PDA in 30 (14.5%). Cases were found to have significant association with younger age (78.3% cases below 1 year of age vs. 64.7% in controls, p=0.0085), bad obstetrical history (p=0.0002), history of febrile illness in 1st trimester of pregnancy (p=0.0229) and lack of multivitamins and folic acid in the 1st trimester of pregnancy (p=0.0147).

Conclusion: Majority of the children with CHDs were male and aged below 1 year. VSD, ASD, TOF and PDA were the most frequent types of CHD. Younger age, bad obstetrical history, history of febrile illness in 1st trimester of pregnancy and lack of multivitamins and folic acid in the 1st trimester of pregnancy were found to have significant association with CHDs among children.

Keywords: Congenital heart disease, echocardiography, ventricular septal defect.