Question

hay does any one know how tell if an individual has a prolonged PQ wave on an EKG

Answer 1

the pq wave is the atrio despolarization it is the first wave in the ECG it is usually small

Answer 2

ECG
Measured in horizontal direction---->
1 small division (SD) = 1mm = 0.04 sec

In electrocardiography, the PR interval(PQ WAVE) is measured from the beginning of the P wave to the beginning of the QRS complex. It is usually 120 to 200 ms long. On an ECG tracing, this corresponds to 3 to 5 small boxes.
http://en.wikipedia.org/wiki/PR_interval
Count the number of small boxes and multiply it with 0.04 sec.
Normal duration of PR interval(PQ WAVE) is
120 to 200 ms=0.12 to 0.20 sec
Any prolongation beyond 0.2 sec is considered as PR interval prolongation.