Polycythemia and its determinants among children with unoperated cyanotic congenital heart disease at Tikur Anbessa specialized hospital, Ethiopia: observational cross-sectional study

The burden of polycythemia among patients with cyanotic CHD is huge. Male sex, saturation level, diagnosis of tricuspid atresia and phlebotomy frequency were associated with polycythemia among patients with cyanotic CHD. Males with cyanotic heart disease, children with tricuspid atresia, and cyanotic CHDs with saturation of oxygen below ninety should receive targeted screening for polycythemia during chronic follow-up.