In a hypercyanotic spell, caregivers are advised to have the child adopt which position?

In a hypercyanotic spell, caregivers are advised to have the child adopt which position?

• A. Squat or knee-to-chest
• B. Stand
• C. Lie down
• D. Sit and watch

Answer: (A)

During a hypercyanotic spell in Tetralogy of Fallot, the goal is to increase systemic vascular resistance to reduce the right-to-left shunting across the VSD and improve pulmonary blood flow. Squatting or pulling the knees to the chest raises systemic afterload, which decreases the amount of blood that bypasses the lungs and helps push more blood to the lungs for oxygenation. This position also helps lessen the infundibular spasm that contributes to the outflow obstruction, further improving oxygenation. Standing lowers systemic vascular resistance and would worsen cyanosis, while lying down or not actively addressing the spell does not counter the shunt.

During a hypercyanotic spell in Tetralogy of Fallot, the goal is to increase systemic vascular resistance to reduce the right-to-left shunting across the VSD and improve pulmonary blood flow. Squatting or pulling the knees to the chest raises systemic afterload, which decreases the amount of blood that bypasses the lungs and helps push more blood to the lungs for oxygenation. This position also helps lessen the infundibular spasm that contributes to the outflow obstruction, further improving oxygenation. Standing lowers systemic vascular resistance and would worsen cyanosis, while lying down or not actively addressing the spell does not counter the shunt.