Why Some People Die Suddenly | Sibia Medical Centre  कुछ अचानक मर जाते हैं ਕੁਝ ਲੋਕ ਅਚਾਨਕ ਕਿਉਂ ਮਰਦੇ
Channel: Sibia Medical Centre
Date: 14/05/2021

Why Some People Die Suddenly
Sudden cardiac arrest
Sudden cardiac arrest isn't the same as a heart attack, when blood flow to a part of the heart is blocked. However, a heart attack can sometimes trigger an electrical disturbance that leads to sudden cardiac arrest.
If not treated immediately, sudden cardiac arrest can lead to death. Survival is possible with fast, appropriate medical care. 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
Signs of sudden cardiac arrest 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
• Fast-beating, fluttering or pounding heart (palpitations)
But sudden cardiac arrest often occurs with no warning.
When to see a doctor
Call 911 or emergency medical help if you experience any of these signs and symptoms:
• Chest pain or discomfort
• Heart palpitations
• Rapid or irregular heartbeats
• Unexplained wheezing
• Shortness of breath
• Fainting or near fainting
• Lightheadedness or dizziness
When the heart stops, the lack of oxygen-rich blood can cause death or permanent brain damage within minutes. Time is critical when you're helping an unconscious person who isn't breathing.
If you see someone who's unconscious and not breathing normally, do the following:
• Call for emergency medical help. f you have immediate access to a telephone, call before beginning CPR.
• Perform CPR. Quickly check the person's breathing. If the person isn't breathing normally, begin CPR. Push hard and fast on the person's chest — at the rate of 100 to 120 compressions a minute. If you've been trained in CPR, check the person's airway and deliver rescue breaths after every 30 compressions.
If you haven't been trained, just continue chest compressions. 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 step-by-step voice instructions. Continue chest compressions while the defibrillator is charging. When it's charged, the defibrillator will check the person's heart rhythm and recommend a shock if needed. 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.
Using the defibrillator, check the person's heart rhythm. If necessary, the defibrillator will give another shock. Repeat this cycle until the person recovers consciousness or emergency workers take over.
Portable automated external defibrillators (AEDs) are available in many places, including airports, casinos and shopping malls. You can also purchase one for your home. AEDs come with built-in instructions for their use. They're programmed to allow a shock only when appropriate.
Causes
The usual cause of sudden cardiac arrest is an abnormal heart rhythm (arrhythmia), which happens when your heart's electrical system isn't working correctly.
The heart's electrical system controls the rate and rhythm of your heartbeat. If something goes wrong, your heart can beat too fast, too slowly or irregularly (arrhythmia). Often these arrhythmias are brief and harmless, but some types can lead to sudden cardiac arrest.
The most common heart rhythm at the time of cardiac arrest is an arrhythmia in a lower chamber of your heart (ventricle). Rapid, erratic electrical impulses cause your ventricles to quiver uselessly instead of pumping blood (ventricle fibrillation).
Heart conditions that can lead to sudden cardiac arrest
Sudden cardiac arrest can happen in people who have no known heart disease. However, a life-threatening arrhythmia usually develops in a person with a preexisting, possibly undiagnosed heart condition. 
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