Answer :
Final answer:
CPR is used when there is no pulse and no breathing. It helps maintain blood circulation and oxygen flow to vital organs, especially the brain, preventing irreversible damage.
Explanation:
Cardiopulmonary resuscitation (CPR) is used when there is no pulse and no breathing. CPR involves chest compressions to pump blood through the heart and body, vital for brain oxygenation following a heart attack.
During cardiac arrest, where the heart stops beating, CPR helps maintain blood circulation and oxygen flow to vital organs, especially the brain, preventing irreversible damage.
While trained responders may perform both chest compressions and breathing, bystanders are advised to provide compression-only CPR for simplicity and efficacy.
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