A 3-month old infant was taken to the pediatrician for the respiratory problems. He has had a cough and runny nose for 2 days and has become progressively more chesty. He had problems during the feeding, one episode of a vomiting cough and dry nappies. The baby was born 2 weeks prematurely with no significant neonatal problems. His mother is on treatment for asthma. These are no significant medical or family history. Examination The infant was febrile with copious nasal secretions, conjunctivitis and noisy breathing (grunting and wheezing).

Tachypnoea was noted with 58 bpm. Crackles and wheeze can be heard throughout the chest. The patient did not respond to standard medication and continuous positive airways pressure (CPAP). Eventually, intubation was initiated. A radiograph was obtained to check the lungs and positioning of the tube (1st image). As the problems with ventilation…