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Doctor insights on: Electrocardiogram Heart Attack

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How can an EKG if I'm having a heart attack?

How can an EKG if I'm having a heart attack?

ST Elevation: Changes on an ekg can be highly suggestive of a heart attack (especially major ones called st elevation mi's (a segment on the ekg called the st segment is noted to be higher than the baseline) but that does not mean a normal ekg can exclude a less severe heart attack. ...Read more

Dr. Creighton Wright
1,182 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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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

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Can you see heart attack changes on a 3 lead EKG?

Can you see heart attack changes on a 3 lead EKG?

Well: I'm electrocardiogram there are usually changes that reflect haven't had a heart attack or myocardial infarction. However electrical abnormalities in the conduction system of the heart can't look like a heart attack or infarct. Also, some infarcts do not show up on the EKG. Most the time the EKG is abnormal and shows a prior heart attack or while you're having a heart attack itshows the acute changes of a heart attack but it's not 100% ...Read more

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A major heart attack would always show up on EKG?

A major heart attack would always show up on EKG?

Not always: For example, with balanced ischemia, the changes in the ekg for one area are balanced by changes in another.

But as a general rule, major mi does have significant changes. ...Read more

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Would a heart attack usually show up on a 3 lead EKG?

Would a heart attack usually show up on a 3 lead EKG?

It can : A complete ECG is all 12 leads. Having said that a 3 lead ECG can give suspicion to prior injury or infarct, but not confirm for as confidently. Also, matters which 3 leads are being traced, contiguous or not so that it would be more or less accurate if it made an anatomic sense. ...Read more

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Is it normal to have a normal EKG with a heart attack?

Is it normal to have a normal EKG with a heart attack?

Occurs: It happens al the time, that is why cardiac enzymes are measured in the blood. Subendocardial infarcts which are the most common, may present with normal or near normal electrocardiograms. If at the emergency room when the heart attack occurs, cardiac enzymes may still be normal. It takes 4 hours of myocardial death for troponins to begin rising. Clinical suspicion, infarct syndrome, cardiaccath. ...Read more

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Can a person have a heart attack, but have a normal ekg?

Can a person have a heart attack, but have a normal ekg?

Yes: Especially early in the course of a heart attack the ekg can be normal. Usually some abnormalities become present with time. A heart attack cannot be excluded based on the ekg alone. ...Read more

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Can you have a normal EKG and still have a heart attack?

Can you have a normal EKG and still have a heart attack?

Yes : Today and until the beginning, and depending on the amount of damage. ...Read more

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Which tests are recommended after EKG shows heart attack?

Which tests are recommended after EKG shows heart attack?

Depends: We may find surreptitiously in doing ekg that they may be an old heart attack. We work up the heart to find out if there is clogging of arteries or by echo how well the heart is functioning. If it is acute with symptoms and ekg suggestive of heart attack, the person is admitted to the hospital for blood tests and proper treatment by the cardiologist either invasively or by meds. ...Read more

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Can an EKG show if I have ever had a heart attack in the past?

Can an EKG show if I have ever had a heart attack in the past?

It can: But not all the time. You can have an old heart attack not detectable by ecg. ...Read more

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Is it possible to be having a heart attack with a perfectly normal ekg?

Heart attack: You can have a heart attack with a perfectly normal ECG especially very early but if any signifcant amount of heart is involved there should be ECG changes. ...Read more

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What would a person see on an EKG of someone who is having a heart attack?

Impossible: There are numerous diagnosable problems seen on ekg during and after a myocardial infarction. The question here on this simple app, however, is way too broad and too ambiguous to answer with any confidence. ...Read more

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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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What does a normal EKG look like versus an abnormal one from an undetected heart attack?

What does a normal EKG look like versus an abnormal one from an undetected heart attack?

A normal EKG: Because some areas of the heart are electrically silent, one can have a full-blown heart attack with an entirely normal ekg. When the ekg is destined to become abnormal, it often lags, not showing changes early on: hence the need for "serial ekgs" (done daily). The adage "treat the patient, not the ekg" hasn't changed over the years. ...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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Ekg's a week apart show heart attack with thickening on right side of heart. What does this mean?

Abnormal: Ekg shows electrical shifts
the damaged-heart attacked muscle signal, is reduced.
Q waves or flattening of the ekg trace are seen and commented in the report.

Thickening is not a usual comment.
That would be seen on an echocardiogram more likely.
Ventricular hypertrophy and larger signals can be identified by ekg. ...Read more

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I had an EKG a week ago that looked good. Is it likely to have a heart attack after a recent clear ekg?

I had an EKG a week ago that looked good. Is it likely to have a heart attack after a recent clear ekg?

You are ok: You are too young to have anything wrong, but an ekg is not sufficient to exckude heart disease. ...Read more

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My ekg said short st. What's this mean and what causes it? Also, does a normal ekg mean I'm not having a heart attack?

My ekg said short st. What's this mean and what causes it? Also, does a normal ekg mean I'm not having a heart attack?

Pattern between S&T: Waves on EKG. Study: https://goo.gl/RBVB3n. EKGs miss most heart attacks. Why? EKGs recorded from surface of body yet innermost muscle of left ventricle is always the most susceptible to ischemic damage (MI, aka heart attack). EKG only reveals damage extending far enough through wall & large enough area; plus "normal" range is so large, an obvious change easily occur & EKG still called normal. ...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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Just got EKG-showed heart attack! I'm in good health & exercise a lot. Should I be having some discomfort if I had a heart attack in the past?

Just got EKG-showed heart attack! I'm in good health & exercise a lot. Should I be having some discomfort if I had a heart attack in the past?

Silent MI: A heart attack (myocardial infarction or MI) sometimes can occur without pain(silent MI). Your doctor can counsel you on maintaining your health and strategy to prevent a recurrence. ...Read more

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Is an EKG a good diagnosis tool for heart attack?

Is an EKG a good diagnosis tool for heart attack?

An EKG is ONE tool!: First of all, if you are currently having symptoms of chest pain, chest tightness, shortness of breath, nausea, indigestion, jaw pain or pain in the arms, stop reading and dial 911. An ekg is one piece of information. But certain blood tests look for chemicals produced by injured heart muscle, echocardiograms look for poor heart wall movement, and angiograms look for blockages in vessels. Lgromko. ...Read more

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How probable is a heart attack at 21, and how probable is that an EKG missed something?

How probable is a heart attack at 21, and how probable is that an EKG missed something?

Atherosclerosis: Low & low
depends on one's personal risks
smoking, obesity, hypertension, hyperlipemia, diabetes , family history.
Simply, one blocks the feeding artery to part of the heart muscle and low flow, or no flow causes ischemia which cause death of the heart cells, which is a heart attack!
Myocardial infarction is the medical term. Ekg and lab tests show the damage. ...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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My t waves in my EKG were upside down in one part. But the rest of it looked fine, does that mean heart attack?

My t waves in my EKG were upside down in one part. But the rest of it looked fine, does that mean heart attack?

T and sympathy: T waves alone do not mean heart attack. You need to see the whole ECG. T waves absent other abnormalities are quite nonspecific. ...Read more

Dr. Lynne Weixel
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
3,967 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