Overview
Sudden cardiac arrest is the abrupt loss of heart function, breathing and consciousness. The condition usually results from an electrical disturbance in your heart that disrupts its pumping action, stopping blood flow to your body.
Sudden cardiac arrest differs from a heart attack, when blood flow to a part of the heart is blocked. However, a heart attach can sometimes trigger an electrical disturbance that leads to sudden cardiac arrest.
If not treated immediately, sudden cardiac arrest can lead to death. With fast, appropriate medical care, survival is possible. Giving cardiopulmonary resuscitation (CPR), using a defibrillator -- or even just giving compressions to the chest -- can improve the chances of survival until emergency workers arrive.
Symptoms
Sudden cardiac arrest signs and symptoms are immediate and drastic and include:
- Sudden collapse
- No pulse
- No breathing
- Loss of consciousness
Sometimes other signs and symptoms occur before sudden cardiac arrest. These might include:
- Chest discomfort
- Shortness of breath
- Weakness
- Palpitations
- Rapid or irregular heartbeat
- Unexplained wheezing
- Fainting or near fainting
- Light headedness or dizziness
Sudden cardiac arrest often occurs with no warning. When the heart stops, the lack of oxygenated blood can cause death or permanent brain damage in minutes. Time is critical when you are helping an unconscious person who is not breathing.
What To Do
If you see someone who is unconscious and not breathing normally, do the following:
- Call 911 or the emergency number in your area. If you have immediate access to a telephone, call before beginning CPR.
- Perform CPR. Quickly check the breathing. If the person is not breathing normally, begin CPR. Push hard and fast on the person's chest -- at the rate of 100-120 compressions a minute. Allow the chest to rise completely between compressions. Keep doing this until a portable defibrillator is available or emergency workers arrive.
- Use a portable defibrillator, if one is available. It will give you systematic voice instructions. Deliver one shock if advised by the device and then immediately resume CPR, starting with chest compressions, or give chest compressions only, for about two minutes. If necessary, the defibrillator will give another shock. Repeat this cycle until the person recovers consciousness or emergency workers take over.
Further information can be found at www.parentheartwatch.org.