In one-person infant CPR, what is the correct compression depth?

In one-person infant CPR, the correct compression depth is one-third the depth of the chest. For infants, this typically translates to about 1.5 inches in depth when further specified, but the critical point is ensuring that compressions are deep enough to create adequate blood flow while also being mindful of the infant's smaller size and delicate body structure. Compressing to one-third of the chest depth allows first responders to generate sufficient pressure to assist with the infant’s circulation without risking injury. This specific guideline helps ensure that CPR is effective while minimizing potential harm, which is particularly important in such vulnerable populations as infants.