Rj
Qrs duration 92
PR total 156
Qt interval 382
Qtc interval 403
Qt dispersion 54
and if I copied it right PRT axis 63/12/47
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Normal for these values are:
PR interval 120-200ms
QRS duration 60-100ms
QT interval <400ms
P duration <120 ms
QTC interval <456ms
Qt dispersion should be from 30-60ms
*PRT axis 63/12/47 means that your QRS interval is in the proper axis (no deviation into an improper axis). You have 3 axis measurenents, 63,12 and 47. All are within the proper range which is -30 to +90. To understand this, you need to be familar with vector analysis. The axis is determined by which direction the electrical signals generated by your heart are travelling toward the leads of the EKG.
The QRS complex corresponds to the current that causes contraction of the left and right ventricles, which is much more forceful than that of the atria and involves more muscle mass, thus resulting in a greater ECG deflection. The duration of the QRS complex is normally less than or equal to 0.10 second.
The P wave is the electrical signature of the current that causes atrial contraction. Both the left and right atria contract simultaneously. Its relationship to QRS complexes determines the presence of a heart block.
The R wave is the initial positive or upward deflection of the QRS complex in the electrocardiogram.
*Given the methodologic problems associated with QT dispersion measurements, it is not surprising that normal values for QT dispersion have not been well defined. Generally values between 30 ms and 60 ms are considered normal. In an analysis9 of 8,455 healthy subjects from 51 studies, mean QT dispersion ranged from 11 ± 10 to 71 ± 7 ms. The weighted mean (± SD) from all of the studies was 33 ± 20 ms. Several large prospective studies have evaluated the use of QT dispersion in well-defined populations without recognized cardiac disease.
*An increased QT dispersion time is associated with ventricular tachycardias, which is the most dangerous of the tachycardias.
WOW, thanks for looking all this up. I had a echocardiogram/sonogram. The tech who really isn't supposed to say anything told me that he did see the heart murmur but everything looked ok and he so no reason to tell me "you need to be in a hospital" now he is only a tech so I need to wait for the results "officially" which will not be till the end of this week.
From what I think I am reading from your info correctly ( boy do I feel dumb :O{ ) everything on my test falls into normal range. Then why did the EKG test say T wave changes in lateral leads, changes are abnormal for age and sex. Could this be the murmur? I hate when test results take so long.
Thanks again for any and all info.
Makes the wait a bit easier.
Talia
Hi, my modem is going on the blink! So I will post this info I found, QUICK. Most of what was in my former post were QUOTES, lol. I thought you knew!
I haven't even read all of the below information. If any is scary, don't believe it. I was constantly being knocked off the net, while I was searching for info.
If a computer analysis is what gave you all of these results, do NOT worry. They have give readings on me that scared the heck out of me, while in the ER and hospital. The cardio always explained that the computer was wrong. He would take his time and try to show me why. I have been in and out of hospitals for 3 years, so trust me.
Also the equipment can be out of calibration, the tech can misplace the electrodes. I don't like anything except for a 12, I say again, 12 lead EKG. If they truly find something mysterious, they will run more EKGs on you. Cheers :)
Rj
Lateral: Leads I, F, and V5-V6 are called lateral leads. Abnormality in these leads indicates pathology on the lateral, upper surface of the heart.
http://www.madsci.com/manu/ekg_st-t.htm#T%20Wave%20Abnormalities
T Wave Abnormalities
T wave abnormalities can provide added evidence to support clinical diagnosis. Except for hyperkalemia, T wave abnormality alone is not diagnostic of any particular condition. The T wave must be considered along with QRS and ST segment abnormalities. T waves will usually be abnormal in ventricular hypertrophy, left bundle branch block, chronic pericarditis, and in electrolyte abnormality.
Tall, peaked T waves occur due to hyperkalemia. If the tall T waves are seen throughout the ECG, general hyperkalemia is present. P waves will be small, PR interval short.
When typical tall, peaked T waves are seen only within a specific set of cardiac leads, it suggests impending infarction. The tall Ts are due to potassium leak through damaged membranes in the area of the infarct.
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T Wave Categories Tall, peaked = hyperkalemia if generalized infarction if localized Inverted = evolving infarction chronic pericarditis conduction block ventricular hypertrophy acute cerebral disease other cardiac disease Flattened = nonspecific |
In chronic pericarditis, T waves show wide-spread inversion, not corresponding to any coronary artery distribution. General inversion of T waves can also be due to an evolving global subendocardial infarct.
Inverted T waves are seen during the evolution of myocardial infarction. The T inversion appears in the leads "looking at" the infarcted area. Several hours after an infarct, T waves begin to invert. T wave inversion may persist for months.
Left ventricular hypertrophy or strain commonly causes T wave inversion. In "strain" pattern, the ST segment slopes down to an inverted T in the leads "looking at" the affected ventricle.
Right ventricular hypertrophy or acute ventricular strain can produce changes in the right precordial leads, V1 and V2. The T wave will be inverted over right heart leads showing evidence of hypertrophy and strain.
Left bundle branch block can cause ST depression and inverted T waves in leads I, L, and V5-V6. The ST depression is usually not great. The T wave tends to be oriented opposite the QRS in LBBB.
Flat T waves can be seen in many conditions, including ischemia, cardiac scar, evolving infarction, and electrolyte abnormality (such as hypokalemia).
In acute cerebral disease, such as intracranial hemorrhage, elongated or bizzare T waves may be seen. These Ts are often biphasic or deeply and sharply inverted. The QT interval is often dramatically lengthened (0.5 to 0.7 seconds).
Totally confused and still really stressed out.
Talia
Hi Talia,
I am sorry that I didn't post references to the information I provided. It took me over 5 hours to answer each question you had, because I wanted to make sure it was correct. I started off trying to keep links to the information, but I saw that that was going to be impossible.
I am very sorry that I have confused you and have made you even more stressed. I really had good intentions.
Here is a link to duration times, I don't think this was the source that I originally used though:
Have a great day and try not to worry,
Rj
http://www.findarticles.com/p/articles/mi_m0NUB/is_4_13/ai_n6354754/pg_2
.WAITING for all the test results is making me nuts@@ You figure in todays world stuff could be ASAP>....
Take care
I am sorry if you feel you are being turned away, please dont feel that way...this isnt my intent at all. I do hope someone can come along and help you with finding some facts on EKG's and how to figure out what your tests mean. We do just advocate that your physician is always a best point of referance. However, I do understand that at times this is not always a persons best option.
Only the day before he passed away did doctors at the hospital told us he must've had ischemic heart disease for very long due to the severe blockages.
After reading up on heart attack symptoms, I realised he also must've had several heart attacks before the ekg. It's not very effective unless the person is really having a heart attack when the ekg is being done. Other than that, I don't trust ekgs.
A stress test (treadmill) is supposed to be even more accurate and I can't find anything which says they are more than 63% accurate and the big problem is your blood pressure is different when you are lying down because everything is more balanced due to an important thing called GRAVITY it is also going to be different standing on your head or if you are tilted in any way . The human heart speeds up and slows down with a continuously changing amount of pressure so much it is impossible to tell what is going on unless it is, like Pinks says, OBVIOUS . I'll argue the point wth the best of them afterall if there is room for excuses like what happened to Pinks father and also what happened to me what really can anyone say ...Not much really , because if excuses like ischemia for a long time after the fact is told to you then really the EKG was actually a killer rather than a useful tool .
If it inhibits the process of diagnosis then it should be labeled as very dangerous therefore there is probably no reason to question why I think they should be banned . If you give medical proffessionals a tool to assist them you embed confidence that the tool has a degree of value and it will suffice is which obviously can and will remove the process of proper health care .Relying on it is a medical proffessional mistake... a very big one .
Good luck to everyone on their quest for answers to their symptoms.
Greenhope