1st April 2022

A 10-day-old girl who was born at term is brought to the paediatric emergency department

A 10-day-old girl who was born at term is brought to the paediatric emergency department by her parents. She is tachypnoeic (respiratory rate 60 breaths/min), and there is subcostal and intercostal recession. Peripheral pulses are palpable and normal. She has a SpO₂ of 98% and is not cyanosed. On auscultation, the following is heard:

• soft pansystolic murmur at the lower left sternal edge
• apical mid-diastolic murmur
• loud pulmonary second heart sound

What is the most likely diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.