A nurse records the finding of a normal sinus rhythm (NSR) when the P, Q, R, S, and T are all present in the electrocardiographic complex. What additional information should the nurse doc-ument?
a. Rate of 82 seconds
b. PR interval of 0.36 second
c. QRS complex of 0.16 second
d. Inverted T
A
NSR requires the presence of P, Q, R, S, and T waves, in that order, and all pointing in the same direction, with a rate of 60 to 100 seconds. Normal intervals are a PR interval of 0.12 to 0.20 seconds and a QRS complex less than 0.10 second.
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