Which of the following antiviral medications inhibits neuraminidase enzyme?

Acyclovir

Oseltamivir

Efavirenz

Rilpivirine.

Answer and Explanation

The Correct Answer is B

This is because oseltamivir is a neuraminidase inhibitor, which means it blocks the enzyme that helps the influenza virus to spread from cell to cell. By preventing the release of new virus particles, oseltamivir reduces the duration and severity of influenza infection.

Choice A is wrong because Acyclovir is wrong because it is a nucleoside analog that inhibits viral DNA synthesis.

It is effective against herpes simplex virus (HSV) and varicella zoster virus (VZV), but not against influenza virus.

Choice C is wrong because Efavirenz is wrong because it is a **non-nucleoside reverse transcript

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Correct Answer is C

Explanation

Ceftriaxone belongs to the third-generation of cephalosporins.Third-generation cephalosporins have greater activity than the second-generation cephalosporins against certain gram-negative bacteria, such as Streptococcus pneumoniae.They are also more resistant to beta-lactamases, enzymes that can inactivate some cephalosporins.

Choice A is wrong because first-generation cephalosporins have less activity against gram-negative bacteria and are more susceptible to beta-lactamases.

Choice B is wrong because second-generation cephalosporins have less activity against Streptococcus pneumoniae than third-generation cephalosporins, and are also less resistant to beta-lactamases.

Choice D is wrong because fourth-generation cephalosporins have a broader spectrum of activity against gram-negative bacteria, including some that are resistant to third-generation cephalosporins, but they are not more effective against Streptococcus pneumoniae.

A. Age B. Competent immune function C. Genetic heritage D. Previous medication reactions.

Correct Answer is B

Explanation

This is because antibiotics act synergistically with the immune system to subdue infection, and it is critical for success that the host defenses are adequate.

Choice A is wrong becauseAge is wrong because age is a general factor that must be considered when choosing any medication, not just antimicrobials.

Choice C is wrong becauseGenetic heritage is wrong because genetic heritage is also a general factor that may affect the metabolism and excretion of medications, not the selection of antimicrobials.

Choice D is wrong becausePrevious medication reactions is wrong because previous medication reactions are also a general factor that may indicate allergies or intolerances to certain medications, not the selection of antimicrobials.

Normal ranges for immune function vary depending on the type and level of immunity measured, such as innate, adaptive, humoral or cellular immunity.Some common tests for immune function include complete blood count (CBC), immunoglobulin levels, complement levels, antibody titers and skin tests.

Normal ranges for these tests depend on the laboratory and the method used, but some examples are:

• CBC: white blood cell count 4.5-11 x 10^9/L; neutrophils 40-75%; lymphocytes 20-50%; monocytes 2-10%; eosinophils 1-6%; basophils 0-2%.

• Immunoglobulin levels: IgG 7-16 g/L; IgA 0.7-4 g/L; IgM 0.4-2.3 g/L; IgE 0-0.4 g/L.

• Complement levels: C3 0.9-1.8 g

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Which of the following antiviral medications inhibits neuraminidase enzyme?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer ceftriaxone (Rocephin) to a client who has pneumonia caused by Streptococcus pneumoniae. The nurse should recognize that ceftriaxone belongs to which generation of cephalosporins?

Correct Answer is C

Explanation

The nurse identifies which host factor as the most important when choosing an antimicrobial drug?

Correct Answer is B

Explanation

A nurse is reviewing laboratory results for a client who has a fungal infection and is receiving itraconazole therapy. Which of the following findings should alert the nurse to a potential adverse effect of this medication?

Which of the following antiviral medications prevents viral fusion with host cell membrane?

A nurse is administering penicillin to a client who has streptococcal pharyngitis. The nurse should monitor for which adverse effect of penicillin therapy?

A nurse is preparing to administer ivermectin to a client who has onchocerciasis (river blindness). Which of the following adverse effects should the nurse monitor for in this client?

The nurse is caring for a patient receiving vancomycin (Vancocin) for treatment of an infection caused by methicillin-resistant Staphylococcus aureus (MRSA). Which assessment finding would indicate a potentially serious adverse reaction to this drug?

A nurse is educating a client who has a respiratory infection and a new prescription for azithromycin (Zithromax). Which of the following instructions should the nurse include? (Select all that apply).

A nurse is caring for a client who has a severe infection and is receiving vancomycin (Vancocin). The nurse should monitor the client for which of the following manifestations of ototoxicity?