A nurse is reinforcing teaching with a client who is at 38 weeks of gestation and has a positive group B streptococcus B-hemolytic screening.
Which of the following medications should the nurse discuss as the prophylaxis treatment during labor for this client?
Penicillin.
Cefazolin.
Erythromycin.
Vancomycin.
The Correct Answer is A
Choice A rationale
Penicillin is the recommended prophylactic treatment for a client at 38 weeks of gestation with a positive group B streptococcus B-hemolytic screening. It is highly effective in preventing the transmission of group B strep from mother to baby during labor and delivery. Administering Penicillin reduces the risk of neonatal sepsis, pneumonia, and meningitis caused by group B strep.
Choice B rationale
Cefazolin is an alternative antibiotic for clients allergic to penicillin. It is less preferred compared to penicillin due to its broader spectrum of activity and potential for resistance. Cefazolin can be used if the client has a non-severe penicillin allergy.
Choice C rationale
Erythromycin is not recommended for group B strep prophylaxis during labor due to its lower efficacy compared to penicillin and cefazolin. It is less effective in preventing neonatal group B strep infections and is used less frequently.
Choice D rationale
Vancomycin is used for clients with a severe penicillin allergy or for those with resistant strains of group B strep. It is a last-resort antibiotic due to its potent effect and potential side effects. It is only used when absolutely necessary.
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Correct Answer is D
Explanation
Choice A rationale
Nausea can be a side effect of magnesium sulfate, but it is not a specific indication of toxicity. Other symptoms are more directly indicative of magnesium sulfate overdose.
Choice B rationale
Facial flushing is a common side effect of magnesium sulfate but is not a sign of toxicity. It typically occurs at therapeutic levels and is not a reliable indicator of overdose.
Choice C rationale
Urine output of 40 mL/hr is within normal limits for an adult and does not indicate magnesium sulfate toxicity. However, significantly decreased urine output could be concerning.
Choice D rationale
Respiratory rate of 10/min is a critical sign of magnesium sulfate toxicity. Magnesium sulfate can cause respiratory depression, and a rate of 10 breaths per minute or less indicates that the patient may be experiencing toxic effects, necessitating immediate medical intervention.
Correct Answer is A
Explanation
Choice A rationale
Deep-vein thrombosis (DVT) is a contraindication for diaphragm use due to the increased risk of thromboembolic events with estrogen-based contraceptives.
Choice B rationale
Tobacco use, although a risk factor for cardiovascular disease, is not a direct contraindication for diaphragm use, which is a non-hormonal contraceptive method.
Choice C rationale
Recurrent urinary tract infections are a contraindication for diaphragm use due to the risk of infection exacerbation from device insertion.
Choice D rationale
History of positive group B streptococcus B-hemolytic is not a contraindication for diaphragm use; it typically relates to pregnancy and neonatal infection risk.