Which technique provides the best support while performing CPR on an infant?

The encircling thumbs technique is recognized as the most effective method for performing CPR on an infant because it allows for two prominent advantages: it offers more stability and control while delivering chest compressions, and it utilizes both thumbs to compress the chest synchronously. This method ensures that the compressions are delivered at the correct rate and depth, which is crucial for maintaining effective blood circulation during cardiac arrest.

By wrapping both hands around the infant's torso, rescuers can securely hold the infant in place and prevent slipping, which is essential given the small size and fragility of infants. This technique allows for deeper compressions compared to other methods and minimizes the risk of causing injury, as the surfaces are better distributed across the infant's chest.

Using only a single finger technique or the heel of the hand technique may not provide adequate compression depth or stability, which is particularly critical in infant CPR where the heart is relatively small and effective circulation requires precise technique. The emphasis in infant CPR is on achieving the right balance of force and safety, making the encircling thumbs technique the optimal choice in this scenario.