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AED Authority
Difference between
Sudden Cardiac Arrest
and a Heart Attack
It’s a common misconception that sudden
cardiac arrest (SCA) and heart attack are the
same thing. In reality they are quite
different and understanding the difference
could save your life or the life of someone
you love. A heart attack could be described
as a ‘plumbing problem’, while sudden
cardiac arrest is more of an ‘electrical
problem’.
Introduction
A heart attack occurs when a blocked artery
prevents oxygen-rich blood from reaching a section
of the heart. If that blocked artery is not cleared
quickly, the part of the heart it normally nourishes
begins to die. The longer the person affected goes
without treatment, the greater the damage.


During a heart attack the person is awake and the
heart is beating. Most heart attacks involve
discomfort in the centre of the chest that last more
than a few minutes or goes away and come back.
Heart Attack
Sudden Cardiac Arrest
The brain normally sends electrical signals to
the heart in order for it to pump blood through
the body and keep our organs running. Sudden
cardiac arrest occurs when there is a disruption
to that electrical current causing an irregular
heartbeat (arrhythmia).


With this disruption, the heart cannot pump
blood to the rest of the body or its vital organs.
The victim will lose consciousness and needs
immediate help. If nothing is done they will die
within minutes.
+61 3 8710 8666
PHONE NUMBER
EMAIL ADDRESS
WEBSITE
Contact Us
marketing@aedauthority.com.au
www.aedauthority.com.au

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Difference between Sudden Cardiac Arrest and a Heart Attack

  • 1. AED Authority Difference between Sudden Cardiac Arrest and a Heart Attack
  • 2. It’s a common misconception that sudden cardiac arrest (SCA) and heart attack are the same thing. In reality they are quite different and understanding the difference could save your life or the life of someone you love. A heart attack could be described as a ‘plumbing problem’, while sudden cardiac arrest is more of an ‘electrical problem’. Introduction
  • 3. A heart attack occurs when a blocked artery prevents oxygen-rich blood from reaching a section of the heart. If that blocked artery is not cleared quickly, the part of the heart it normally nourishes begins to die. The longer the person affected goes without treatment, the greater the damage. During a heart attack the person is awake and the heart is beating. Most heart attacks involve discomfort in the centre of the chest that last more than a few minutes or goes away and come back. Heart Attack
  • 4. Sudden Cardiac Arrest The brain normally sends electrical signals to the heart in order for it to pump blood through the body and keep our organs running. Sudden cardiac arrest occurs when there is a disruption to that electrical current causing an irregular heartbeat (arrhythmia). With this disruption, the heart cannot pump blood to the rest of the body or its vital organs. The victim will lose consciousness and needs immediate help. If nothing is done they will die within minutes.
  • 5. +61 3 8710 8666 PHONE NUMBER EMAIL ADDRESS WEBSITE Contact Us marketing@aedauthority.com.au www.aedauthority.com.au