Final answer:
Cardiac arrest is identified by sudden loss of responsiveness, no breathing, and lack of a pulse, necessitating immediate intervention such as CPR and the use of an AED to potentially save the person's life and minimize brain damage.
Step-by-step explanation:
Recognizing Cardiac Arrest
Recognizing someone in cardiac arrest is crucial, as it is a life-threatening emergency. The key signs include sudden collapse, unresponsiveness, absence of breathing, and no pulse.
During cardiac arrest, the heart ceases to pump blood effectively, leading to vital organs, and especially the brain, getting deprived of oxygen. To determine if someone is experiencing cardiac arrest, check if they are responsive and look for normal breathing. In the absence of both, it is likely that the individual has suffered from cardiac arrest.
Immediate Action and Use of AED
Immediate action should be taken to assist someone in cardiac arrest. This is when CPR (Cardiopulmonary Resuscitation) and use of an AED (Automated External Defibrillator) become critically important.
CPR involves compressing the chest at least 5 cm deep at a rate of 100 compressions per minute to maintain blood flow, especially to the brain. An AED can deliver a shock to the heart to restore its normal rhythm. Quick intervention increases chances for survival and reduces the risk of permanent brain damage.
If you witness a cardiac arrest, call emergency services immediately and begin CPR while waiting for an AED or professional medical help.