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Doctor insights on: Variable Pr Interval On An Ecg

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Dr. Jan Lei Iwata
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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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

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What does short PR interval and Early repolarization combination on ECG signify?

What does short PR interval and Early repolarization combination on ECG signify?

Abnormal EKG.: Possible cause of a short PR interval on EKG include AV junctional rhythm, Lown-Ganong-Levine syndrome (pre-excitation with a short PR interval and a normal duration QRS interval) or Wolf-Parkinson-White syndrome (pre-excitation with a short PR interval, a long QRS interval with a delta wave often with paroxysmal tachycardia or atrial fibrillation. An electrophysiologist can help with management. ...Read more

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What does it mean if ECG showed short pr interval. & flat or low neg t in avl & v6. & high lateral and lateral repoloarization disturbance (mild) ?

Different things: A short pr interval means that the heart beat is either initiated in a part of the atrium which is distinct from the sinus node (where it usually starts) or is being conducted with accelerated velocity to the ventricles. The other changes are "non-specific" and can be due to anything, like sodium, potassium or magnesium levels, medicines, lead position, skeletal variation and many other things. ...Read more

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What does sinus rhythm - borderline short pr interval mean on an ecg?

Usually nothing.: The pr interval, the time between the p wave (atria contract) and the qrs (ventricles contract) is typically between 0.12 and 0.20 seconds. If it is a bit shorter than 0.12 seconds but the ECG is otherwise normal, there is generally nothing to be concerned about. If you have episodes of heart racing, you should tell your doctor, as there may be a condition in which you are prone to fast rhythms. ...Read more

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What does pr interval .12, qrs .09 and qt interval .34 mean on an ecg?

Intervals: It means those intervals are normal, it doesn't say anything about the rest of the ecg. ...Read more

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Ecg results- pr interval (110ms), qrs duration (90ms), qt, qtc- (352, 425), p-t-r axes- (8, 35, 110). Is this normal?

Usually benign: Pr interval depends on many factors. Pr shortens at faster hrs. Some people have short pr intervals even at slower rates, so-called "lgl syndrome", completely benign. Rarely, a short pr can be due to an accessory pathway, also called wpw, but any physician should be able to take one look at the ECG and determine if that's the case or not. Even if it is, there's nothing to do if you're asymptomatic. ...Read more

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What do you advise if i want help reading my sons ECG results.Pr interval is 122, qrs duration 108, qt/qtc 454/454, p-r-t axes 34, -?

Could be normal: The values you mention are not necsssarily a problem. You do need someone with expertise to look over the tracing however to make sure there are no other problems or abnormalities. ...Read more

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I recently done two ecg first one shows sinus arrythmia and second one shows short PR interval and my BPM is 76 and pr Interval is 107 my age is 21 i ?

Your Heart if Fine: You did not tell us why you had the ECG done in the first palce? People at your age rarely show anything significant on an ECG. What you have reported here is of no consequence, so you need not to worry unless you have some symptoms from your heart. ...Read more

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