A nurse is teaching a newly licensed nurse about evaluating cardiac rhythms. Which of the following best explains calculation of the heart rate?
Look for P waves on the strip
Count how many QRS occur in a 6 second strip
Read the monitor or electrocardiogram interpretation.
Measure the T waves
The Correct Answer is B
Rationale:
A. Looking for P waves is important for assessing atrial activity, but it does not directly calculate heart rate.
B. Counting how many QRS complexes occur in a 6-second strip and multiplying by 10 is a quick and accurate way to calculate heart rate.
C. Reading the monitor or ECG interpretation provides information about the rhythm and morphology of the heart, but it does not directly calculate heart rate.
D. Measuring T waves is important for assessing cardiac repolarization, but it does not directly calculate heart rate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Radiofrequency catheter ablation is a long-term treatment for recurrent VT, not an immediate intervention.
B. CPR is indicated for pulseless VT, but this client has a carotid pulse.
C. Defibrillation is used for pulseless VT or ventricular fibrillation, but this client is still perfusing.
D. Synchronized cardioversion is the appropriate treatment for unstable VT with a pulse, as it delivers a timed shock to restore normal rhythm.
Correct Answer is A
Explanation
Rationale:
A. Petechiae are small, pinpoint red or purple spots on the skin that may indicate bleeding or thrombocytopenia, which can be a side effect of heparin therapy.
B. Slowing pulse rate is not typically associated with heparin therapy.
C. Confusion is not typically associated with heparin therapy.
D. Pruritus (itching) is not typically associated with heparin therapy.
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