The nurse would teach the mother of a boy with Tetralogy of Fallot that if the child suddenly becomes cyanotic and dyspneic, the mother should:

The correct answer is Choice A.Choice A rationalePlacing the child in a knee-chest position helps increase systemic vascular resistance, which reduces the right-to-left shunt and improves oxygenation during a cyanotic spell in children with Tetralogy of Fallot.Choice B rationaleHaving the child lie supine with the head turned to one side does not help in managing a cyanotic spell and may not improve oxygenation.Choice C rationaleLying prone does not specifically address the cyanotic spell and may not be the most effective position for improving oxygenation.Choice D rationalePlacing the child in a semi-Fowler’s position in an infant seat does not specifically address the cyanotic spell and may not be the most effective position for improving oxygenation.