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Heart Attack vs. Cardiac Arrest: What’s the Difference?

What Is It?

Cardiac arrest, sometimes called sudden cardiac arrest, means that your heart suddenly stops beating. This cuts off blood flow to the brain and other organs. It’s an emergency and is deadly if not treated immediately. Call an ambulance right away!
Symptoms

Cardiac arrest is quick and drastic: You suddenly collapse, lose consciousness, have no pulse, and aren’t breathing. Right before it happens, you could be very tired, dizzy, weak, short of breath, or sick to your stomach. You may pass out or have chest pain. But not always. Cardiac arrest can happen with no warning signs at all.
What Happens

Your heart has an electrical system that keeps it beating regularly. Cardiac arrest can strike if the electrical signals go haywire and cause an irregular heartbeat, or arrhythmia. There are different types of arrhythmias, and most aren’t dangerous. One called ventricular fibrillation triggers cardiac arrest the most. If this happens, the heart can’t pump enough blood to your body. That’s life-threatening within minutes.
 Heart Disease Link

Many people who have cardiac arrest also have coronary artery disease. Often, that’s where the trouble starts. Having coronary artery disease means less blood flows into your heart. This can lead to a heart attack that damages your heart’s electrical system.


 
Other Causes

Cardiac arrest can also happen for other reasons, including:

    Major blood loss or severe lack of oxygen
    Intense exercise, if you have heart problems
    Too high levels of potassium or magnesium, which could lead to a deadly heart rhythm
    Your genes. You may inherit certain arrhythmias or a tendency to get them.
    Changes to your heart's structure. For instance, an enlarged heart or changes caused by an infection.

Not a Heart Attack

Unlike cardiac arrest, your heart doesn’t usually stop during a heart attack. Rather, blood flow is blocked in a heart attack, so your heart doesn’t get enough oxygen. That can kill some of the heart muscle. But the two are linked: The scar tissue that grows as you recover from a heart attack can mess with the heart’s electrical signals and could put you at risk. And a heart attack itself can sometimes trigger cardiac arrest.  

 
Not Heart Failure, Either

Cardiac arrest strikes suddenly. It’s an instant crisis. Heart failure is different. It’s a condition where your heart gets weaker over time until it can’t send enough blood and oxygen around your body. When your cells don’t get enough of these nutrients, your body doesn’t work as well. You may find it hard to catch your breath when you do simple things like carry groceries, climb stairs, or even walk.

At Risk for Cardiac Arrest

It’s more likely if you:

    Have coronary artery disease (This is the biggest risk.)
    Are a man
    Have had arrhythmias or cardiac arrest, or someone in your family has
    Smoke or abuse drugs or alcohol
    Have had one or more heart attacks
    Have diabetes, high blood pressure, or heart failure
    Are obese

Intense Emotion

Sudden strong feelings, especially out-of-control anger, can prompt arrhythmias that trigger cardiac arrest. Mental health conditions such as anxiety and depression also may make you more likely to have it. That’s one more reason to tell your doctor or see a counselor if you’re having a hard time.

Treatment

If you have cardiac arrest, you need immediate treatment with a defibrillator, a machine that sends an electric shock to the heart. This shock sometimes can get your heart to beat normally again. But it must be done within minutes to help. First responders like police, firefighters, and paramedics usually have a defibrillator and know how to use it. Some public places have a version of the machine, called an AED, that anyone can use.

AED: What to Do

You don’t need training to use an AED (automated external defibrillator). Just follow the directions. This device can sense dangerous arrhythmias and send a lifesaving shock to the heart if needed. If you think someone is having cardiac arrest, call 911 and send someone to look for an AED. Do CPR until the AED or emergency responders arrive.
At the Hospital

The doctors will watch you closely. They will try to find out what caused your cardiac arrest and treat the problem. If you have coronary artery disease, you may get a bypass or a procedure called angioplasty to open narrowed or blocked arteries in your heart. You may also get medicines and advice for lifestyle changes to lower your chances of having it again.

See a Cardiologist

After you recover, you’ll see a heart doctor (cardiologist), who will check your heart’s electrical system and come up with your treatment plan to try to prevent another cardiac arrest. You might get blood tests and other types of studies to check on your heart.


See a Cardiologist

After you recover, you’ll see a heart doctor (cardiologist), who will check your heart’s electrical system and come up with your treatment plan to try to prevent another cardiac arrest. You might get blood tests and other types of studies to check on your heart.

Cardiac Catheterization

Your doctor may put a soft, thin tube called a catheter into a blood vessel in your neck, arm, or upper thigh and guide it to your heart. She may send a special dye that’s visible on X-rays into the tube to check for narrowed or blocked arteries. She can also test your heart’s response to certain drugs or electrical signals. She may even use the tube to do angioplasty, a procedure to open blocked arteries.

If You Need an ICD

This device is a small automated defibrillator that a surgeon can implant under your skin to send an electric shock to your heart if it finds certain irregular heartbeats. Your doctor may suggest that you get one if you have severe heart disease or have already had cardiac arrest. A surgeon places the ICD under your skin. Some devices include a pacemaker as well as an ICD to keep your heart rhythm regular.

Concord Essen

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Cameroon Concord  is an online publication covering and reporting on  local and world news, sports, entertainment, politics, business, and religious news. Serving Cameroonians .

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