A nurse is reviewing a client's cardiac rhythm strips and notes a constant P-R interval of
0.35 seconds. Which of the following dysrhythmias is the client displaying?
Premature atrial complexes
Complete heart block
Atrial fibrillation
First-degree atrioventricular block
The Correct Answer is D
A. Incorrect. Premature atrial complexes do not typically affect the P-R interval. They are characterized by an early P-wave followed by a QRS complex.
B. Incorrect. Complete heart block is characterized by a dissociation between the P-waves and QRS complexes, resulting in no relationship between atrial and ventricular activity.
C. Incorrect. Atrial fibrillation is characterized by chaotic and irregular atrial activity without distinct P-waves, making the P-R interval irrelevant.
D. Correct. In first-degree atrioventricular block, the P-R interval is prolonged beyond the normal range of 0.12-0.20 seconds. A constant P-R interval of 0.35 seconds indicates a first- degree atrioventricular block.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Nonreactive pupils are not typically associated with pseudoparkinsonism.
B. Smacking lips is not typically associated with pseudoparkinsonism.
C. Serpentine limb movement is not typically associated with pseudoparkinsonism.
D. Correct. Pseudoparkinsonism is a side effect of antipsychotic medications like haloperidol. It is characterized by motor symptoms similar to Parkinson's disease, including a shuffling gait, rigidity, bradykinesia (slowed movement), and resting tremor.
Correct Answer is A
Explanation
A. Administering the medication 30 minutes earlier may not be appropriate without specific orders from the provider.
B. Infusing the medication at a faster rate is not a solution for adjusting the timing of the dose.
C. Administering the medication up to 2 hours after the usual schedule time is incorrect because it could lead to subtherapeutic levels and reduced effectiveness.
D. Adjusting the medication schedule solely for the convenience of the client without consulting the provider is not recommended.
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