Is it true that sudden cardiac death happens in people with prior heart attack 80% of the time?

Cardiac scarring. Priorheart attack results in scarring in the heart tissue that alters the electrical conduction through that part of the muscle. Altered conduction leads to the possibility that this zoned can be a source of initiation for ventricular arrhythmias that can cause sudden cardiac death.

Related Questions

Lately I have been Feeling sleepy at all times. All day. Despite drinking coffee. Plus less concentration. Going on for At least a week. I am a cardiac patient. Could this be a symptom of heart attack. Thank you.

Depression? Unless you are suffering from severe heart failure, these symptoms are most suggestive of depression and not a heart attack. Read more...
Be safe, get checked. What you are describing doesn't sound like a heart attack. However, a young person with a history of heart disease and these symptoms is concerning.
This combination does sound like it could be depression but with your history it is wise to see your doctor and make sure it is not your heart disease progressing or some other medical condition like thyroid disease. Read more...

I suffer from panic attacks. Have been to ER many times fearing heart attack only to be told I am fine. Now suffering left arm pain. Is this cardiac?

Atypical..... Left arm pain by itself is atypical for heart pain but not impossible. Are there any associated symptoms with it like shortness of breath? Is it better with rest and worse with exercise? The only way to know for sure if this is cardiac pain is to get an ekg while you are having the discomfort, which may mean going to the er now. Have you had a cardiac stress test recently? Read more...
Likely no. You probably have been worked up several times and found that even the risk of heart attack in you is low. An arm pain associated with heart attack will not last so long such as days or even hours without having completed a heart attack and the sequelae such as congestive heart failure would have occurred. Still go to your pmd as reassurance is best if they can review you have been worked up. Read more...

Can you tell me how high is risk of heart attack (sudden cariac death) if basic hearth tests are ok?

Risk for heart attac. You don't mention what basic heart tests you are talking about. That is important. If you have had your cholesterol checked, there is way more to know. These days we really want to know your genes related to heart disease, your cholesterol particles and subpartivles, several inflammation markers, and a carotid intima-media thickness imaging test, and perhaps a calcium score. . Read more...
Heart attack. and sudden cardiac death are different entities. Sudden cardiac death is often related to underlying heart rhythm abnormalities, which don't cause a heart attack (which is caused by blockages in heart's arteries.) But, if your tests are normal, your risk is low. Seems like you obviously have ongoing concerns over this. I would suggest a more thorough discussion with your cardiologist. Read more...

How high is risk of heart attack (sudden cariac death) if basic blood tests are ok?

Low, but. Even if your cholesterol and triglycerides are normal that can't ensure you won't have a heart attack. Your family history, smoking and other factors can all contribute to cardiovascular risk. Almost half of all initial signs of heart disease can be sudden cardiac arrest. The best thing to do is control what risk factors you can - blood pressure, lipids and diet as well as exercise. Read more...

Can heart attack happen to a non smoker 30 y male with all normal cardiac test results and no fam hist, have anxiety... no symptom but worried..

Anxious. with normal cardiac tests you need to be taking anti anxiety medication such as Prozac, (fluoxetine) reduce anxiety level will make you feel better. Read more...
Highly unlikely. While nothing is impossible, a heart attack is highly unlikely in a 30 year old with normal cardiac tests, a negative family history, and no symptoms. It sounds like your unfounded anxiety is the problem you need to deal with and not the risk of cardiovascular disease at this point. Read more...