Fourteen infants were in significant respiratory distress from collapse of a lung, lobar atelectasis, or diffuse bilateral atelectasis. When standard therapy proved ineffective, tracheobronchial washouts and aspirations were performed at the bedside using a nontraumatic and easily directed angiographic catheter. A total of 27 procedures were performed on the 14 infants. Considerable improvement resulted in all cases. No complications due to the technique occurred, although the procedure was repeated as frequently as every 12 hours. The efficacy, ease, and reliability of this procedure recommend it in the care of infants with respiratory distress due to atelectasis.