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Doctor insights on: Ecg Changes For Heart Attack

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How does previous heart attack show on an ecg?

How does previous heart attack show on an ecg?

Q waves: Some heart attacks do not show and even ones that do, may only be temporary. That said, q waves, if of sufficient voltage and if they follow known patterns, are the way of diagnosing heart attack by ekg. (caution: not all Q waves are indicative of heart attack!). ...Read more

Dr. Creighton Wright
1,181 Doctors shared insights

Myocardial Infarction (Definition)

Myocardial Infarction means some of the heart muscle dies because of insufficient oxygen supply. Most often this occurs because the coronary artery is blocked by plaque & clot. Other causes include tears in the artery wall, extremely high oxygen demand (eg, rapid arrhythmia, heart valve disorder, or severe systemic illness.) Prompt treatment can minimize heart damage & ...Read more


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Would an old heart attack show up on an ecg? If so which wave would show it?

Would an old heart attack show up on an ecg? If so which wave would show it?

Q wave: There are patterns in old heart attack waves on ekg. Often several specific leads will show the scar on particular, specific walls of the heart. Review this with your doctor. ...Read more

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Is it possible to determine that you're going to have a heart attack by doing ecg?

Is it possible to determine that you're going to have a heart attack by doing ecg?

No: Can show it is happening, or suggest it has happened, but is not predictive generally. ...Read more

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Does normal ECG (83 bpm) indicates no heart attack in past 5-6 yrs for 50+ females?

Does normal ECG (83 bpm) indicates no heart attack in past 5-6 yrs for 50+ females?

It is likely that: A normal EKG excludes prior heart attack but not 100% definitive. Show your EKG to a qualified health care provider for further assessment. ...Read more

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How does a previous heart attack represent itself on an ecg? Which wave and the form of the wave?

How does a previous heart attack represent itself on an ecg? Which wave and the form of the wave?

Q wave: Many, but not all old heart attacks show up as a q wave which is an initial significant downward deflection but this can also be seen in some normal variants. Reading ecgs can be tricky and significant training is needed to read them well. ...Read more

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My ECG was abnormal with a 'probable anterospetal infract age indeterm' - Q >30ms, Tneg, V1-V3. Does this mean I had a heart attack?

My ECG was abnormal with a 'probable anterospetal infract age indeterm' - Q >30ms, Tneg, V1-V3. Does this mean I had a heart attack?

Very little: Unfortunately, the conventional ECG is older technology, invented more than 100 years ago. It is only accurate for rhythm disturbances and does not detect lack of blood supply to the heart at all! A new and much better technology based a systems engineering has emerged! It is called multifunction cardiogram! Http://en. M.Wikipedia. Org/wiki/multifunction_cardiogram. ...Read more

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How good is an ECG combined with a 24h Holter in detecting a previous heart attack, both overt and silent?

How good is an ECG combined with a 24h Holter in detecting a previous heart attack, both overt and silent?

ECG: ECG would likely show an evidence of previous heart attack and Holter monitor would only show arrhythmias. If you want to be sure about heart disease you should either get a stress test or cardiac catheterization. But considering your age the probability is low. ...Read more

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I have a handheld ECG monitor. If I was having a heart attack would that show irregularities?

I have a handheld ECG monitor. If I was having a heart attack would that show irregularities?

Probably: Ecg monitors provide information as to rate, rhythm and pattern of our heart. When a person is having an acute "heart attack", usually the pattern of the normal heart changes. The pattern may show elevations in areas that are not there in normal or non-ischemic hearts or irregular heart beats. If you think you are having a heart attack, immediately seek out medical attention or call 911. ...Read more

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I got my ECG results and my Q wave was abnormal. Does this mean that I had a heart attack?

I got my ECG results and my Q wave was abnormal. Does this mean that I had a heart attack?

It depends: It depends on the location and size of the Q waves in relation to the other parts of the qrs complex. Ask your doctor to look at the ECG and let you know. ...Read more

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2 Normal ecgs, have an echo next week but terrified of SCA. Afraid to sleep or exercise. Uncle had heart attack young, grandma stroke. 19 yr female.

2 Normal ecgs, have an echo next week but terrified of SCA. Afraid to sleep or exercise. Uncle had heart attack young, grandma stroke. 19 yr female.

Fear: At age 19 if you are healthy- it sounds like your fear is excessive. Consider seeing a therapist to help you work through this. Take care. ...Read more

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Hi, I had an ECG and the dr said it looked as though I had a heart attack so they did an echo, said the heart looked fine and said it was a variant?

Hi, I had an ECG and the dr said it looked as though I had a heart attack so they did an echo, said the heart looked fine and said it was a variant?

Not sure what your: Question is. The EKG can be nonspecific in certain cases and can be variant. If the ECHO was OK and did not show any areas of the heart that were scarred or dysfunctional you are OK. Of course it is always prudent to make appropriate life style choices. Exercise, no smoking, low fat diet and BMI ...Read more

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Er ecg shows cannot rule out anterior infarct. Dr did ecg showed normal. I'm scared. Can you have a normal ecg after heart attack. Is it a heart attac?

Er ecg shows cannot rule out anterior infarct. Dr did ecg showed normal. I'm scared. Can you have a normal ecg after heart attack. Is it a heart attac?

, Possibilities...: It is possible to have differences in EKGs due to a difference in lead placement. If you want to know how your heart is functioning, an echocardiogram could be done. It is a non-invasive test, basically an unltrasound of your heart. If that is normal, then the chances are good that you did not have a heart attack. Were cardiac enzymes checked in the ER? That is another test to rule out heart attac ...Read more

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27 years old, st and t wave abnormality in ecg, 61 kg, smoking, no family history. What risk for heart attack?

27 years old, st and t wave abnormality in ecg, 61 kg, smoking, no family history. What risk for heart attack?

Quit Smoking: While ST and T wave abnormalities on ECG may often be nonspecific, smoking causes heart attacks, strokes, amputations of the legs, lung disease and cancer. You're a young man - it's time for you to quit smoking! I can't quit for you but you can! Other than rapidly opening blocked arteries in an acute heart attack the only intervention to save more hearts is quitting smoking!! Do it today!! ...Read more

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Does a "Normal ECG" report indicates there is nothing like LBBB or past heart attack, stroke or cardiac attack?

Does a "Normal ECG" report indicates there is nothing like LBBB or past heart attack, stroke or cardiac attack?

ECG not great.: While certain things, like a LBBB, would be evident and obvious on an ECG, other things, like previous heart attacks, or more importantly the risk for a future heart attack, may be frustratingly absent from a resting ECG. Echocardiogram and stress test may be more useful cardiac tests for risk stratification. ...Read more

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For 58+ F, can presence of LBBB in ECG be indicative of any previous heart attack or stroke? How risky is it for future heart health?

For 58+ F, can presence of LBBB in ECG be indicative of any previous heart attack or stroke? How risky is it for future heart health?

Absolutely, LBBB is: A result of endocardial muscle damage/infarction of the Perkinje fibers & surrounding muscle. Endocardial muscle (because heart contraction blocks capillary flow during each beat) is always most susceptible to ischemic damage (heart attack) yet least reflected on surface EKG other than by elongation of the QRS duration. Thus a block; QRS duration beyond 80 msec=most sensitive sign of heart attack. ...Read more

Dr. Ira Friedlander
3 Doctors shared insights

Electrocardiogram (Definition)

Electrocardiogram (ecg, ekg) is a print-out of the electrical forces detected by electrodes on the chest wall, as electricity travels through the heart with each heart beat. The electrodes are placed in different positions, and each position "sees" the electrical activity of the heart from its own vantage point. Abnormalities in signal detected at chest surface ...Read more


Dr. Creighton Wright
3,966 Doctors shared insights

Heart Attack (Definition)

A life-threatening condition in which the blood vessels that supply the heart becomes occluded and thus the heart itself is not longer receiving any blood flow. Without this blood flow, the heart muscle dies and cannot pump blood to the ...Read more