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Abstract
Chronic hypoxia in CCHD results in erythrocytosis causing blood
hyperviscosity. We studied hemodynamic changes in 40 CCHD patients by Doppler
US on renal, femoral & superior mesenteric arteries. We demonstrated progressive
increase in resistance & pulsatility indices in renal & femoral arteries but it was
statistically non significant increase. This increase was correlated to the duration of
cyanosis. No changes in superior mesenteric artery hemodynamics. Finally, we
recommend doing Doppler examination for assessment of renal condition in CCHD.