Where should one pad be placed in the anterior/posterior pad placement for infants?

The correct placement of the pad in anterior/posterior positioning for infants is at the center of the infant's chest. In infants, pad placement is particularly critical because their anatomy is much smaller and less developed than that of older children or adults. Placing a pad at the center ensures optimal contact with the heart and central circulation, maximizing the effectiveness of defibrillation if necessary.

This central position allows for proper transmission of electrical energy during cardiopulmonary resuscitation (CPR) and potential defibrillation, and it helps to avoid unintended injury to surrounding organs or tissues. The positioning also takes into consideration the need to have both pads, if using a dual-pad setup, effectively establish the circuit through the heart.

Other locations, such as under the right clavicle or on the mid-axillary line, do not provide the same effectiveness in contact with the heart, while padding on the left side of the chest might lead to misplacement as well, especially given the smaller size of an infant's chest. Thus, the center of the infant's chest is the appropriate choice for proper pad placement.