Final answer:
The correct ratio for compressions to ventilations in infant CPR when two rescuers are present is 15 compressions to 2 breaths. This specific ratio helps to balance the need for both circulation and oxygenation in an infant's body during CPR.
Step-by-step explanation:
The correct ratio for compressions to ventilations in infant CPR with two rescuers is 15 compressions to 2 breaths. This ratio is designed to ensure that an infant, who naturally has a higher respiratory rate than an adult, receives adequate ventilation to match their physiological needs. It's important that those performing CPR on an infant have proper training, as the technique differs from that used on adults and even older children. By following the 15:2 ratio for compressions to breaths, rescuers work to maintain oxygenation and circulation until advanced medical help can take over.
During CPR, high-quality chest compressions are crucial. They need to be performed at a depth of at least one-third the depth of the chest, which is approximately 4 cm (1.5 inches) for infants, and at a rate of 100 to 120 compressions per minute. Ventilations should be delivered over 1 second each, sufficient to make the chest rise but not too forceful to avoid causing injury.