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Sudden cardiac arrest
Sudden cardiac arrest (SCA) is the sudden loss of all heart activity due to an irregular heart rhythm. Breathing stops. The person becomes unconscious. Without immediate treatment, sudden cardiac arrest can lead to death.
Emergency treatment for sudden cardiac arrest includes cardiopulmonary resuscitation (CPR) and shocks to the heart with a device called an automated external defibrillator (AED). Survival is possible with fast, appropriate medical care.
Sudden cardiac arrest isn't the same as a heart attack. A h...
When to seek medical or mental health expertAlways seek the advice of your physician or other qualified health provider with any questions you may have regarding your health. Never disregard professional medical advice or delay in seeking it because of something you have read on the community.Symptoms of sudden cardiac arrest are immediate and severe and include:
- Sudden collapse.
- No pulse.
- No breathing.
- Loss of consciousness.
Sometimes other symptoms occur before sudden cardiac arrest. These might include:
- Chest discomfort....
A change in the heart's electrical activity causes sudden cardiac arrest. The change makes the heart stop pumping blood. No blood flow goes to the body.
How the heart beats
To understand sudden cardiac arrest, it may help to know more about the heart's signaling system.
Electric signals in the heart control the rate and rhythm of the heartbeat. Faulty or extra electrical signals can make the heart beat too fast, too slowly or in an uncoordinated ...
Treatment for sudden cardiac death includes:
- CPR. Immediate CPR is needed to treat sudden cardiac arrest and prevent death.
- Resetting the heart rhythm. This is called defibrillation. You can do this by using an automated external defibrillator, called an AED, if one is available. They are found in many public places.
- Medicines to treat irregular heartbeats and to manage symptoms....
Keeping the heart healthy may help prevent sudden cardiac arrest. You can do this by:
- Eating healthy.
- Getting regular checkups.
- Not smoking or using tobacco.
- Being screened for heart disease.
- Controlling blood pressure and cholesterol.
Genetic tests can be done to see if you have long QT syndrome, a common cause of sudden cardiac death. Check with your ...
For informational purposes only and not a substitute for professional medical advice, diagnosis, or treatment.
© Mayo Clinic
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