Measuring QRS Complex Flashcards

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From the end of the PR interval to the end of the S wave. (correct)
Count the small boxes between the end of the PR interval and the end of the S wave. (correct)
Count the large boxes between the Q and R waves.
From the beginning of the P wave to the end of the S wave.

0.04 seconds

0.08 seconds

0.16 seconds Signup and view all the answers

0.06 seconds Signup and view all the answers

0.14 seconds Signup and view all the answers

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Locate the QRS complex on the EKG strip for accurate measurement.
Measure from the end of the PR interval to the end of the S-wave to determine the QRS complex length.
Count the number of small boxes between the two measurement points.
Each small box represents 0.04 seconds in time.

A QRS complex measuring 3 whole boxes and 2 half boxes corresponds to a duration of 0.16 seconds. (Calculation: 0.02 + 0.04 + 0.04 + 0.04 + 0.02 = 0.16)
For a QRS complex of 1 whole box and 1 half box, the total duration is 0.06 seconds. (Calculation: 0.02 + 0.04 = 0.06)
A measurement of 3 whole boxes and 1 half box results in a QRS duration of 0.14 seconds. (Calculation: 0.04 + 0.04 + 0.04 + 0.02 = 0.14)