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Doctor insights on: What Does A Normal Ekg Look Like

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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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Dr. James Lin
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


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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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Does a normal EKG mean my heart is fine? I had mild symptoms of heart disease, so my doctor did an ekg. It was normal. Does this mean I definitely don’t have heart disease?

In a way yes: Since you have a normal ekg it means that you did not have a heart attack in the past. However a notmal ekg cannot r/o coronary artery disease. Stress test and echocardiography should be done to assess your coronary arteries and your cardiac structure. ...Read more

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Does a normal EKG and normal blood test mean my heart is okay? I'm a sixteen year old female, over weight. Bad anxiety I always think something is wrong with my health. I now think I have a heart problem, but the ER and the doctor says it's just my anx

Does a normal EKG and normal blood test mean my heart is okay? I'm a sixteen year old female, over weight. Bad anxiety I always think something is wrong with my health. I now think I have a heart problem, but the ER and the doctor says it's just my anx

Normal for age: These tests exclude any significant heart problem, which are rare at your age anyway. Common things are by definition common. Anxiety triggers indigestion & that pain is often centered just beneath your heart. It is also aggravated by poor sleep, caffeine or nicotine, chocolate, carbonated beverages, etc. You may feel better if you avoid any caffeinated products, don't lay down for 1 hr after meal ...Read more

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EKG Question - What would cause a small dip after the T wave? It's like a scoop about 1mm deep. Is this normal or should it be isoelectric after T?

EKG Question - What would cause a small dip after the T wave? It's like a scoop about 1mm deep. Is this normal or should it be isoelectric after T?

Yes, isoelectric if: After the T-wave. Given that the T-wave is the heart muscle repolarization wave, most likely explanation=the dip is the terminal portion of the T-wave; i.e. terminal inversion due to muscle still in recovery. (Rarely, a U-wave may create illusion of a dip after the T-wave.) Terminal T-wave inversion, T-wave prolongation & QRS duration ≥80 ms. (delayed depolarization) are all c/w ischemia/fibrosis. ...Read more

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What should p waves look like in lead v1? What does it mean if different on some EKG? One will show completely positive, one fully negative, another biph

There can be a lot: Of normal variability to the p-wave morphology in V1. More so in women. In general a biphasic or mostly upright p wave is usual. Certainly you could have an ectopic atrial activation in which case the morphology would be altered. Physical positioning (sitting, lying or at 30 degrees) for the EKG will also make a difference. Lead position too. Regardless it is usually of no clinical significance. ...Read more

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What does the EKG of a person with ASD look like?

What does the EKG of a person with ASD look like?

ASD ecg: Read this:

http://www. Learntheheart. Com/ecg-review/ecg-topic-reviews-and-criteria/atrial-septal-defect-review/

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Ekg showed normal rhythm but irregular tp. What does this mean?

Ekg showed normal rhythm but irregular tp. What does this mean?

Sinus arrythmia: Probably it is sinus arrythmia. It is normal physiological variation. ...Read more

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I've had chest discomfort off and on. All my ekgs are normal. What could it be?

I've had chest discomfort off and on. All my ekgs are normal. What could it be?

Anxiety: Pulmonary embolism, pulmonary hypertension, coronary spasm, valve abnormalities, drug use, heart burn. .. Etc. ...Read more

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Ekg was completely normal but I had slightly peaked t waves in only v2. Is this ok?

Probably: The doctor that ordered your ekg may be abkle to answer better that me. Most likely at your age and isolated changes in the ekg may not be signifiant. ...Read more

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5 minute long EKG recording. Shows normal rhythm but tp was irregular. What does this mean?

Sinus arrythmia: Probably sinus arrythmia. It is a normal physiological variation. Precise diagnosis could be given only after reviewing ekg. ...Read more

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"i had an EKG done today and I observed the results stated probably normal for age what does this mean? "

"i had an EKG done today and I observed the results stated probably normal for age what does this mean? "

ECG: 'probably normal for age' basically means normal. There are some subtleties related to age but few make significant difference except when there is a wide difference between age and interpretation. ...Read more

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Does QT interval vary over the course of a day? Had two EKGs done on same day - at different places - and both were normal, but different.

Does QT interval vary over the course of a day? Had two EKGs done on same day - at different places - and both were normal, but different.

QT interval varies: With Heart Rate. The "corrected" QT interval tries to standardize this but there are a number of different correction formulas and the calculation for each EKG machine may have been resulted using different methods. The key is it is not abnormal. So worry not. ...Read more

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11 EKGs done in 1 year because of Er visits BC of panic disoder. All normal except recent one. Nonspecific T abnormalitieslateral leads should I worr?

11 EKGs done in 1 year because of Er visits BC of panic disoder. All normal except recent one. Nonspecific T abnormalitieslateral leads should I worr?

No: I suspect you have been getting chest pain during your panic attacks. A normal EKG at the time of the chest pain rules out an acute coronary syndrome in most people. You should talk to your doctor about getting a stress test just to be sure. ...Read more