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We evaluated the incidence of residual ductal flow with color Doppler echocardiography and associated clinical findings in 63 patients who had undergone surgical ligation for isolated PDA, The interval between surgery and color Doppler echocardiographic evaluation ranged from 2 days to6.6 years(mean 7 months). In 40 patients, color Doppler echocardiographic studies were done within 1month after surgery. In 8 of... |
