Frequency of cardiac defects among children at echocardiography centre in a teaching hospital

ABSTRACT

To assess frequency of cardiac defects among children from birth to 12 years of age on echocardiography basis. A cross sectional study was conducted at echocardiography centre in coronary care unit at Bahawal Victoria Hospital Bahawalpur for fifteen months from April 2007 to July 2008. A sample of 150 patients [<12 years age] were selected by non-probability convenience sampling technique. The cardiologists performed echocardiography by Paediatric Transthoracic echo probe; 2-D colour Doppler, Acuson CV-70 and Niemo-30 echocardiography machines. Mothers of children with cardiac defects were interviewed at the echocardiography centre. Variables included were A- Muscular plus Vascular defects; B- Valvular defects; C-Pericardial effusion; D- Dextrocardia and E- Congestive cardiac failure. History of children for sore throat followed by joint pains; history of mothers for drug intake [antihypertensive, antipyretic, anti-emetic, hypoglycaemic] as well as chronic diseases [diabetes mellitus, hypertension, anaemia] during pregnancy were surveyed. Parity of mothers, their cousin marriages, and family socio-economic status was also inquired. The results were tabulated, analyzed and finally subjected to suitable test of significant [SR of proportion] to find out statistical significant if any. It was found that out of 150 patients, 76 [50.66%] were suffering from Cardiac muscular and Vascular defects, 61 [40.66%] Valvular defects, 7 [4.66%] Pericardial effusion, 2 [1.33%] Dextrocardia and 4 [2.66%] from Congestive Cardiac Failure. According to age, 54 [36%] were from birth to 3 years of age and 51 [34%] from 10 to 12 years. There was history of Rheumatic fever among 45 [30%] children. There were 106 [70.6%] children from lower socio-economic class and 79 [52.6%] parents had history of cousin marriages. Frequency of cardiac defects was more in children of male sex, lower socio-economic group, from birth to three years age and children from primipara mothers in our specified locality. Rheumatic fever, cousin's marriage, and prescribed drugs intake during pregnancy [for metabolic and hormonal disorders] were other contributors to cardiac defects