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Author Question: The nurse is caring for a patient with a malignant brain tumor. The patient asks the nurse why the ... (Read 89 times)

beccaep

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on: Jul 23, 2018
The nurse is caring for a patient with a malignant brain tumor. The patient asks the nurse why the tumor is being treated with radiation instead of chemotherapy. The nurse's explanation involves what important information?
 
  A) Medications have difficulty crossing the bloodbrain barrier.
  B) Neurons in the brain are easily damaged by chemotherapy.
  C) Tumors arising from nervous tissue are not impacted by chemotherapy.
  D) Chemotherapy reduces nerve transmission and cannot be used.

Question 2

What medication is only administered intravenously and is used to treat cytomegalovirus (CMV)?
 
  A) Cidofovir (Vistide)
  B) Foscarnet (Foscavir)
  C) Valacyclovir (Valtrex)
  D) Valganciclovir (Valcyte)


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joewallace

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Reply #1 on: Jul 23, 2018
Answer to Question 1

A
Feedback:
The bloodbrain barrier is a functioning boundary that plays a defensive role by keeping toxins, proteins, and other large structures out of the brain and preventing their contact with the sensitive and fragile neurons. As a result, medications like chemotherapy can have difficulty crossing this barrier to reach the tumor. The other answers are neither true nor the correct option.

Answer to Question 2

B
Feedback:
Foscarnet (Foscavir) is administered IV only. Ganciclovir and (Cytovene) can be administered by IV and orally. Valganciclovir (Valcyte) and Valacyclovir (Valtrex) are administered only by the oral route.


beccaep

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Reply #2 on: Jul 23, 2018
Both answers were spot on, thank you once again


joewallace

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Reply #3 on: Jul 23, 2018
Great! Please up vote :D


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