Final answer:
Correct chest compressions on an infant involve using two fingers for gentle compressions on the lower half of the sternum at a depth of 1.5 inches and a rate of 100 to 120 per minute.
Step-by-step explanation:
The rescuer performing chest compressions correctly on an infant during 2-rescuer CPR is using a different technique than when administering CPR to an adult. Instead of the hands, two fingers are used to compress the sternum of the infant, applying gentle pressure at a depth of about 1.5 inches (approximately 4 cm) and at a rate of 100 to 120 compressions per minute. It's essential to avoid the xiphoid process to prevent injury and to ensure that the chest compressions are performed on the lower half of the sternum. The focus should be on quality chest compressions to maintain blood flow to the brain and vital organs until professional medical help arrives or the heart resumes beating.