LAUSR

Sir, As we know that cyanotic congenital heart disease (CHD) comprises up to 25% of cases of all causes of CHD,[1] there is lack of Indian data about the present spectrum of cyanotic CHD. We did a study to determine the spectrum of patients with cyanotic CHD. All patients with suspected cyanotic CHD were provisionally included in this study. This was a prospective observational study conducted in a tertiary cardiac care center in South Rajasthan over a period of 6 months (January 2016 to June 2016). Patients underwent a thorough echocardiographic evaluation and those patients who had definitive diagnosis of cyanotic CHD were included for final analysis. We had excluded those patients who had normal cardiac evaluation with central or peripheral cyanosis, for example, pulmonary arteriovenous fistula, and methemoglobinemia. We had also excluded patients with idiopathic pulmonary hypertension and acquired cyanosis from Eisenmenger’s syndrome. After final inclusion in this study, patients were classified according to the cardiac defects and age at presentation. We had arbitrarily divided the children into four groups, namely, neonatal period (0–1 month), infancy (1–12 months), preschool age (>1–6 years), and school age/adolescence (>6–18 years).