During CPR for an infant, what is a critical adjustment to perform compared to adults?

Answer: A — Using two fingers for compressions

When performing CPR on an infant, the technique requires the use of two fingers for chest compressions. This method is essential because infants have smaller, more delicate chests than adults, and using two fingers allows for precise and gentle yet effective compressions. The compressions should be applied just below the nipple line and should compress the chest about one third the depth of the chest, which is typically about 1.5 inches for infants. In contrast, deeper compressions are more suitable for adults, who have larger and sturdier chests that can withstand greater force. Additionally, when delivering breaths, the volume for infants is much lower than for adults, as their lungs and airways are significantly smaller. Instead of abdominal thrusts, which are used for choking in adults, infants require back slaps and chest thrusts in cases of airway obstruction. Therefore, the critical adjustment of using two fingers for compressions is specifically aligned with the anatomical and physiological differences between infants and adults, ensuring the safety and effectiveness of the resuscitation efforts.