If an unresponsive 9-month-old infant has an obstructed airway, what should you do first?

In the case of an unresponsive 9-month-old infant with an obstructed airway, the appropriate first action is to begin chest compressions as outlined in the American Red Cross Basic Life Support guidelines. This approach is critical because when an infant becomes unresponsive due to an airway obstruction, their heart may be affected rapidly, necessitating immediate intervention.

Initiating chest compressions helps to promote blood circulation and can aid in restoring heart function in the absence of adequate breathing and airway clearance. In an emergency situation where the airway is compromised, performing compressions may also create intra-thoracic pressure, which can assist in dislodging the obstruction.

Prior actions like providing back blows or looking for the object may be necessary in specific circumstances but are not the immediate priority when the infant is unresponsive. Checking for breathing and a pulse has a similar rationale; while it’s important, the need to act quickly on potential cardiac issues and ensure circulation takes precedence. Thus, beginning with chest compressions is the correct and life-saving choice in this scenario.