ECG [EKG] a short QRS and and inerpreterations of this

Guest

I I have two questions regarding intervals of ECG measurements.

I took an ECG and found interval times of:
.8783 for RR,
.139 for PR
.0575 for QRS
My understanding is that usual values for these would be:
..6 to 1 for RR
..1 to .2 for PR
..09 to .12 for QRS

While the recorded RR and PR are normal from this data, the QRS is very
low, i was wondering what could cause this, or what philological
implications this has (the ventricle contracts very quickly, causes a
longer filling time?)

Also I was wondering if there is a good online source of data on
interval times as

I would like to find PQ and QT times for a normal adult, as well
perhaps as ECG interval times for abnormal cases.

Thank you.

Guest

You should not be concerned about these readings, from the information
provided the following conclusions can be drawn:

Your resting heart rate is normal at approx. 68 beats/minute.
The PR interval is normal.
The QRS duration is short.

You ought not to worry too much about intervals, most ECG
interpretations have to do with morphologic characteristics of the ECG
tracing (ie does the line go up or down at certain points in the
tracing). The value of an ECG, like any clinical test, is dependant on
the reasons that your physician wanted you to have one. I am unaware
of any clinical significance to a short QRS.

Take care

Andrew B. Chung, MD/PhD · medicine forum Guru Joined: 25 Mar 2005 Posts: 8540

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