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Doctor insights on: Ecg Practice Questions

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My question is I have had multiple ecgs dine and some my PR interval is short and some my PR interval is normal!?!? What could be causing this?

My question is I have had multiple ecgs dine and some my PR interval is short and some my PR interval is normal!?!? What could be causing this?

Pre-excitation: Some patients maybe born with a bypass tract or accessory tract. An extra pathway for electricity in the heart that might make one susceptible to abnormal heart rhythms. A detailed evaluation by a cardiologist is necessary to further assess and if needed referral to an electrophysiologist. A history of palpitations, rapid heart rate or syncope may indicate the short PR is significant. ...Read more

Dr. Katharine Cox
2 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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Sorry 4 so many questions I'm scared to sleep due to sudden change in ECG from normal to non specific t wave abnormality in a few hours exstreme aniexty Google says sign of serious problem?

Sorry 4 so many questions I'm scared to sleep due to sudden change in ECG from normal to non specific t wave abnormality in a few hours exstreme aniexty Google says sign of serious problem?

Not a problem: The T wave is the most labile wave in the ECG. T wave changes including low-amplitude T waves and abnormally inverted T waves may be the result of many cardiac and non-cardiac conditions. The normal T wave is usually in the same direction as the QRS except in the right precordial leads (see V2 below). See link for details but try not to get confused with medical jargon. Consult your MD for sp qs. ...Read more

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What do you mean by Holter monitor has only one lead but the ECG have 12 leads. How does one lead pick up ischemic changes of the heart rythm. (F/up) previous question?

What do you mean by Holter monitor has only one lead but the ECG have 12 leads. How does one lead pick up ischemic changes of the heart rythm. (F/up) previous question?

Lead, in EKG terms,: refers to electrical viewpoint, not the physical number of electrical connections. E.g. the typical single lead Holter connects to two electrodes on the skin plus a third used as an electronic ground to improve signal to noise ratio given the tiny voltages being recorded. Holters are not designed to detect ischemia, only heart rhythm. 12 EKGs can detect signs of ischemia but miss most disease. ...Read more

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What is the 12. Lead ecg?

What is the 12. Lead ecg?

ECG: It stands for electrocardiogram. It is used to measure the movement of electrical signals in the heart. When working appropriately, this enables your heart to beat and pump blood to the rest of the body. When the heart is damaged or the electrical system is malfunctioning, ECG can pick up changes. ...Read more

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Hi,can i send YOU my ecg?

Upload it: Ask tech support to help you upload it. Why at age 19 did you have to have an ECG. If you were having chest pains get a 2D ECHO FOR MITRAL PROLAPSE. Suggest trying magnesium 400 to 600 mg a day and Fish Oil 1000 mg 2x a day with meals ...Read more

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Can 3 lead ECG show much?

Yes: While "much" is a relative statement, a 3 lead ECG should be able to help the physician determine your heart rhythm. ...Read more

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Why my ECG show so bizarre?

Why my ECG show so bizarre?

ECG: That would be a question to ask the physician who read your ecg. We on healthtap have not seen your study. Sometimes leads can be attached to the patient incorrectly, leading to a "bizarre" ecg. Please talk with your doctor about it. ...Read more

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How do they do ECG on kids?

How do they do ECG on kids?

ECG in kids: Same as in adults...Just smaller patches.

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