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Case 2-A day old girl was referred, having developed cyanotic episodes not associated with feeding at 12 hours. Catheters were easily passed into the oropharynx through both nostrils. She was prescribed 0.5% ephedrine nose drops for evident nasal congestion, but her condition deteriorated so the drops were withdrawn. Radiological findings were normal, and examination under anaesthesia showed normal airways except for mucosal congestion in the nose. The nasal passages were dilated up to 14 French gauge. Post- operatively regular nasal suction and decongestants were used. Her condition deteriorated again with 0-5% ephedrine drops, which were again withdrawn. Three days postoperatively she still showed intercostal recession but could breathe through her mouth and was feeding well enough to return to the referring hospital. Three months later she was healthy with no airway or feeding problems.
Knott et al. (Sat,) studied this question.