A student nurse is reviewing an EKG graph and attempting to determine if the rhythm is sinus bradycardia. The student nurse knows that which of the following are normal characteristics of sinus bradycardia? Select all that apply.
a. Irregular rhythm
b. PR interval of 0.16 seconds
c. QRS complex of 0.08 seconds
d. PR interval of 0.24 seconds
e. 1 to 2 QRS ratio
b. PR interval of 0.16 seconds
c. QRS complex of 0.08 seconds
rationale: Sinus bradycardia would have a PR interval of 0.12-0.20 seconds. Sinus bradycardia would have a QRS complex of 0.06-0.12 seconds. Sinus bradycardia would have a 1 to 1 QRS ratio.
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