Wiki Cardiac Arrest vs Heart Attack vs Heart Failure

[CNMI670]

I just want to confirm that I'm understanding the difference.
Cardiac Arrest: Sudden cessation of the heart.
Heart Failure: Condition where the heart does not pump enough blood therefore the body/organs don't receive blood and/or oxygen and/or nutrients.
Heart Attack: Sudden death of the heart due to lack of blood.
So,
1) A Heart Attack is the result of Heart Failure?
2) Cardiac Arrest is another word for Heart Attack?
3) Heart Failure is the cause of Cardiac Arrest or Heart Attack?

Thank you!!

 

[thomas7331]

These three terms are really three independent things - they are often, but not always, related to each other. For example: A heart attack does not necessarily result in a cardiac arrest - sometimes only a portion of the heart is damaged by the lack of blood supply and the heart can continue to function. If the heart attack is severe, it may cause a cardiac arrest, where the heart stops completely. But a cardiac arrest can occur for reason other than a heart attack, such as due to a severe electric shock, or from other trauma.

Heart failure, where the heart does not function correctly or pump adequately, can be the result of a heart attack and the ensuing damage to the heart muscle, but heart failure can be caused by other things too, such as infections, drug and alcohol abuse, fluid retention in the body, etc.

Hope this helps some!