EKG Rhythm Strip Quiz 160: Interval measurements

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Identify the following rhythms.


1.  What is the PR interval on the 1st complex?














2. What is the height of the R wave of the 2nd complex?




















3.  What is the depth of ST depression in the 3rd complex?














4.  How many seconds is the pause?



5. What is the height and width of the P wave in the 4th complex?



6.What is the height of the ST elevation in the 2nd complex?







7.  What is R-R interval between the 1st and 2nd complex and the 3rd and 4th complexes?



8.What is the depth of the Q wave in the 3rd complex?














9.What is the depth of the S wave in the 3rd complex?






















10.What is the QT interval in the 2nd complex?















Answers


1.    0.36 sec
2.    28 mm
3.    3 mm
4.    1.88 sec
5.    height 4.5 mm and width 3 mm
6.    3 mm
7.    1.28 sec and .96 sec
8.    4 mm
9.    31 mm
10.  0.68 sec

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