Summary Two cases of choanal occlusion havebeen presented, one of them in a premature infant. The incidence of death by suffocationfrom this cause may be reduced by early diagnosis. It is suggested that an attempt to pass a catheter through each nostril into the nasopharynx be routinely performed in all newborn infants who have periodic episodes of cyanosis. Immediate treatment is to providean adequate airway. For this purpose a rigid oral airway tubeis effective during the emergency until a nasal airway can be obtained.