Congenital Heart Disease and Its Association in Children With Down Syndrome.

Objective The objective is to determine the frequency of different congenital heart diseases and their association in children with Down syndrome (DS). Methodology This cross-sectional observational study was conducted in the pediatric department of Peshawar Institute of Cardiology, Peshawar, Pakistan from August 2021 to July 2022. A total of 123 children with DS and congenital heart disease (CHD) were included in this cross-sectional study. Detailed history and examination were performed, and findings were documented on performed pro forma. Diagnosis of CHD was confirmed through two-dimensional (2D) and Doppler echocardiography performed by a pediatric cardiologist. Patients were managed according to standard protocols and guidelines. The data including age, gender, mother's age at the time of birth, type of CHD and growth failure were documented and analyzed. Percentages were used to express frequencies. Results The mean age was 2.2 years ± 3.4 years (interquartile range (IQR): 10 days to 14 years). There were 65 (52.8%) male and 58 (47.1%) female patients. Out of 123 patients, 101 (82.1%) had acyanotic CHD and 22 (17.8%) had cyanotic CHD. Among acyanotic CHD, isolated ventricular septal defect (VSD) was the most common observation in 23 (22.3%) and among cyanotic CHD, tetralogy of Fallot (TOF) in seven (31.8%) patients. The most common associations of CHD were VSD+ patent ductus arteriosus (PDA) in 11 (9%) patients and atrial septal defect (ASD)+PDA in nine (7.3%) patients. The median age of the mother at delivery was 31 years (interquartile range (IQR): 20 years to 45 years). Growth failure was seen in 70 (56.9%) patients. Conclusion Based on our data, VSD is the most common CHD followed by a complete atrio-VSD (CAVSD) in children with DS. The most common association of CHD in DS is VSD with PDA. Growth failure is seen in most of the patients with DS having a CHD.