15th September 2020

A girl, born at 27 weeks’ gestation via emergency caesarean section, presents with worsening respiratory distress

A girl, born at 27 weeks’ gestation via emergency caesarean section, presents with worsening respiratory distress, requiring mechanical ventilation on day two after birth. On examination, you notice a bounding pulse with wide pulse pressure and continuous machine-like murmur heard best in the infraclavicular region and back. It was noted that her mother had not had the MMR vaccine. What are the risk factors in this scenario that predispose this baby to the most likely diagnosis?

Which THREE of the following are correct? Select THREE options only.