Question

Full chest recoil is necessary for a successful resuscitation as it:

a. allows the blood to flow back into the heart b/n compressions
b. it gives the lungs time to exchange CO2 and O2
c. it increases intrathoracic pressure and coronary blood flow
d. allows responder doing compressions to conserve energy

Answer 1

Full chest recoil during CPR is essential as it enables blood to refill the heart between compressions, ensuring continued blood flow during resuscitation.

Step-by-step explanation:

Full chest recoil during CPR is critical to successful resuscitation, as it allows the blood to flow back into the heart between compressions. This action is pivotal because during the recoil phase, the heart refills with blood, which can then be circulated with the next compression. In essence, it helps to mimic the heart's natural pumping action by maintaining blood flow, particularly to vital organs like the brain. Additionally, the respiratory pump mechanism during breathing facilitates venous return to the heart, which is integral during CPR to ensure efficient circulation. During exhalation, pressure within the thorax increases, speeding blood flow into the heart. Therefore, the correct answer is a. allows the blood to flow back into the heart between compressions.