A client who is taking an oral contraceptive receives a new prescription for erythromycin. Which instruction should the nurse provide to the client?
Stop the oral contraceptive immediately.
Take the medications at least 12 hours apart.
Use an additional form of contraception.
Avoid prolonged exposure to direct sunlight.
The Correct Answer is C
Choice A reason: Stopping the oral contraceptive immediately is not necessary and may increase the risk of unintended pregnancy. Erythromycin can reduce the effectiveness of oral contraceptives by interfering with their metabolism, but it does not make them completely ineffective.
Choice B reason: Taking the medications at least 12 hours apart is not sufficient to prevent the interaction between erythromycin and oral contraceptives. The interaction can occur regardless of the timing of the doses.
Choice C reason: Using an additional form of contraception is the best instruction for the client who is taking an oral contraceptive and erythromycin. This can prevent pregnancy in case the oral contraceptive fails due to the interaction with erythromycin. The additional form of contraception should be non-hormonal, such as a barrier method or a copper intrauterine device.
Choice D reason: Avoiding prolonged exposure to direct sunlight is a good advice for anyone taking erythromycin, as it can cause photosensitivity and increase the risk of sunburn. However, this is not related to the interaction with oral contraceptives and does not affect their efficacy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["42"]
Explanation
The correct answer is 42gtt/min.
To calculate the infusion rate, use the formula:
gtt/min = (volume in mL x drop factor in gtt/mL) / time in min
Plug in the given values:
gtt/min = (500 mL x 10 gtt/mL) / 120 min
gtt/min = 5000 gtt / 120 min
gtt/min = 41.67 gtt/min
Round to the nearest whole number:
gtt/min = 42 gtt/min
Correct Answer is B
Explanation
Choice A reason: Notifying the healthcare provider of the carbamazepine level is not necessary, as 8.4 mg/L (35.6 mcmol/L) is within
the normal range of 4 to 12 mg/L (16.9 to 50.8 mcmol/L). The healthcare provider may adjust
the dose based on other factors such as clinical response, seizure frequency, or adverse effects,
but not based on this level alone.
Choice B reason: Administering the carbamazepine as prescribed is the appropriate action to take, as 8.4 mg/L (35.6 mcmol/L) is within
the normal range of 4 to 12 mg/L (16.9 to 50.8 mcmol/L). The nurse should follow the prescribed
dose and schedule of carbamazepine to maintain a therapeutic level and prevent seizures.
Choice C reason: Assessing the client for side effects of carbamazepine is important, as carbamazepine can cause adverse effects such as drowsiness, dizziness, nausea, rash, or blood dyscrasias. However, this action is not related to the carbamazepine level, as side effects can occur at any level and may not correlate with the serum concentration. The nurse should monitor the client for side effects regardless of the carbamazepine level.
Choice D reason: Withholding this dose of carbamazepine is not appropriate, as 8.4 mg/L (35.6 mcmol/L) is withinthe normal range of 4 to 12 mg/L (16.9 to 50.8 mcmol/L). Withholding the dose may cause a drop in the serum concentration and increase the risk of seizures. The nurse should administer the carbamazepine as prescribed unless instructed otherwise by the healthcare provider.
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