Infant Feeding & Breastfeeding — Practice
A 2-month-old infant presents with poor feeding, sweating during feeds and recurrent respiratory infections. Echocardiography confirms a large ventricular septal defect with left-to-right shunt. What is the underlying haemodynamic reason for the symptoms appearing at this age rather than at birth?
AClosure of the foramen ovale
BFall in pulmonary vascular resistance
CConstriction of the ductus arteriosus
DRise in systemic vascular resistance