What is the measurement of the PR interval in figure 1? (See answer key below) So, if you measure 2 boxes the measurement of the PR interval would be 0.08 seconds. Remember each box represents 0.04 seconds.Count the SMALL boxes between there measurements.Determine where the PR interval is, and to do this you start measuring at the beginning of the p-wave until the beginning of the QRS complex.
#Intervalo pr how to
Here are some simple steps on how to measure the PR interval: When you measure a PR interval, you start measuring at the BEGINNING of the p-wave until the BEGINNING of the QRS complex. In this video, I explain how to measure the PR interval.Ī normal PR interval measures 0.12-0.20 seconds which is 3 to 5 small boxes on the EKG strip. Video Tutorial on How to Measure the PR Interval In addition, I recommend that you check out how to measure the QRS complex and how to count a heart rate on an EKG using the 6 six second rule. At the end of the article, you can test your knowledge on how to measure PR intervals. In this article, I am going to show you a simple way on how to measure the PR interval. A PR interval that has increased in length could represent a heart block. It is very important when interpreting heart rhythms as the nurse that the PR interval is not increasing in length and is baseline for that specific patient.
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