Question

CPR, or cardiopulmonary resuscitation, is a first-aid technique to help save lives. It involves compressions of the patient’s chest cavity. Which description is the best description of the functions of chest compressions in CPR?

Answer 1

Chest compressions in CPR manually compress the blood within the heart to maintain blood flow to vital organs.

Step-by-step explanation:

The functions of chest compressions in CPR are to manually compress the blood within the heart in order to push some of the blood into the pulmonary and systemic circuits. This helps maintain blood flow to vital organs, especially the brain, to prevent irreversible damage and death of neurons. Chest compressions should be performed with the flat portion of one hand on the sternum between the line at T4 and T9, at a depth of at least 5 cm and a rate of 100 compressions per minute.

Answer 2

Compression-only (hands-only or cardiocerebral resuscitation) CPR is a technique that involves chest compressions without artificial ventilation.[6]:S643 It is recommended as the method of choice for the untrained rescuer or those who are not proficient because it is easier to perform and instructions are easier to give over a phone.[6]:S643[32]:8[36] In adults with out-of-hospital cardiac arrest, compression-only CPR by the lay public has a higher success rate than standard CPR.[36]