Lots of acronyms - too many at times.
So what do they mean?
AED - Automated External Defibrillator
https://en.wikipedia.org/w…/Automated_external_defibrillator An AED is a portable electronic device that automatically diagnoses the life-threatening cardiac arrhythmias of ventricular fibrillation and pulseless ventricular tachycardia, and is able to treat them through defibrillation,
the application of electricity which stops the arrhythmia, allowing the heart
to reestablish an effective rhythm.
therefore capable of correcting most life-threatening cardiac arrhythmias.
The ICD is the first-line treatment and prophylactic therapy for patients at risk
for sudden cardiac death due to ventricular fibrillation and ventricular tachycardia.
either because the heart's natural pacemaker is not fast enough, or because
there is a block in the heart's electrical conductive system.
ICDs and Pacemakers are both surgically implanted, usually on the left side and under the collar bone. They may also be found on the upper arm or on the left side of the body between the armpit and the waistline.
ICDs and AED give an electrical shock, when needed.
Pacemakers continually generates electrical impulses to regulate the heart,
but do not "shock" the patient.
Some combine a pacemaker and defibrillator in a single implantable device.
Others have multiple electrodes stimulating differing positions within the heart
to improve synchronization of the lower chambers, or ventricles, of the heart.
ICDs and Pacemakers are about the size of your palm.
AED pads are about the size of your hand.
Your heart is about the size of your fist.
A Heart Attack and Cardiac Arrest are not the same.
A Heart Attack is a circulatory, or plumbing, issue.
Cardian Arrest is an electrical issue.
Not everyone having a heart attack will go into cardiac arrest.
CPR - Cardio Pulmonary Resuscitation
https://en.wikipedia.org/wiki/Cardiopulmonary_resuscitation CPR is an emergency procedure that combines chest compressions with artificial ventilation in an effort to manually preserve intact brain function until further measures are taken to restore spontaneous blood circulation and breathing
in a person who is in cardiac arrest.
CPR alone is unlikely to restart the heart.
Its main purpose is to restore partial flow of oxygenated blood to the brain
and heart. The objective is to delay tissue death and to extend the brief window
of opportunity for a successful resuscitation without permanent brain damage.
Administration of an electric shock to the subject's heart, termed defibrillation,
is usually needed in order to restore a viable or "perfusing" heart rhythm.
Defibrillation is effective only for certain heart rhythms, namely ventricular fibrillation or pulseless ventricular tachycardia, rather than asystole or pulseless electrical activity.
Early shock, when appropriate, is recommended.
CPR may succeed in inducing a heart rhythm that may be shockable.
In general, CPR is continued until the person has ROSC -
a Return Of Spontaneous Circulation or is declared dead.
THE CPR GALS has found the following videos which give a good description
on how the heart works.
In a CPR and First Aid Class, you will learn more about the signs and symptoms,
how aspirin helps a true heart attack victim, how to give proper CPR as well as
how using an AED help raise the chance of someone surviving.
Heath Beat: Heart Attack Vs. Cardiac Arrest (about 2 minutes long)
How the Heart Works animation video -
How does the Circulatory System work? (not quite 4 minutes long)
How the Heart Works - 3d (about 1 1/2 minutes long)
AHA CPR AED - Training video - 1 hour 12 minutes long - 2011 version