What technique should be used for CPR on an unresponsive choking infant?

The encircling thumbs technique is appropriate for administering CPR to an unresponsive choking infant because it combines chest compressions with rescue breaths while maintaining the infant's airway. This technique involves encircling the infant’s chest with both hands, using the thumbs to compress the sternum while the fingers provide support to the back. It allows for proper compressions that are both effective and safe, given the fragility of an infant’s body.

To clarify the context of the other options: The two-handed technique is generally used for adults and older children and may not be suitable for infants due to their small size. The abdominal thrusts technique is not recommended for infants who are unresponsive and choking because it could cause further injury. The one-handed technique is not standard practice for CPR on infants, as it would not provide the necessary support and stabilization needed during the procedure.

In summary, the encircling thumbs technique is specifically designed for infants experiencing choking that has led to unresponsiveness, ensuring a balance of effective compressions and the possibility of delivering rescue breaths.