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. St. John's wort is an herbal supplement that can interact with antidepressant medications like amitriptyline and should be avoided.
B. Taking amitriptyline on an empty stomach can lead to gastrointestinal upset, so it is better to take it with food.
C. Amitriptyline can have anticholinergic effects, which might lower blood pressure rather than raise it.
D. Correct. Amitriptyline and other antidepressants take a few weeks to reach their full therapeutic effect, so it's important for the client to understand this delayed response.
Correct Answer is ["A","B","C","E"]
Explanation
Client reports lower back pain and pinkish vaginal discharge.
- Explanation: Lower back pain and pinkish discharge can indicate preterm labor, especially given the client’s history of a previous preterm birth.
Uterine contractions every 8 minutes, palpate strong, duration 30 seconds.
- Explanation: Frequent and strong contractions suggest that labor may be progressing, which is concerning at 33 weeks gestation and needs close monitoring.
FHR baseline 145, minimal variability.
- Explanation: Minimal variability in the fetal heart rate (FHR) can be a sign of fetal distress or a lack of fetal well-being, warranting further evaluation.
Cervical exam indicates 2 cm, 50% effaced, 0 station.
- Explanation: Cervical dilation and effacement at 33 weeks gestation indicate that labor is progressing. Given the client's history of preterm birth, this finding is concerning and requires intervention to try to prevent another preterm delivery.
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