Which of the following drugs inhibit bacterial beta-lactamase?

goldenseal

ceftriaxone (Rocephin)

penicillin

Zosyn (piperacillin/tazobactam)

Answer and Explanation

The Correct Answer is D

A.Goldenseal:

Goldenseal is a plant commonly used in herbal medicine, but it is not a drug that specifically inhibits bacterial beta-lactamase. While goldenseal may have antimicrobial properties, it is not typically used as a beta-lactamase inhibitor in the treatment of bacterial infections.

B. Ceftriaxone (Rocephin):

Ceftriaxone is a third-generation cephalosporin antibiotic. While it is an effective antibiotic for treating a wide range of bacterial infections, it does not have beta-lactamase inhibitor properties. Instead, ceftriaxone is susceptible to degradation by beta-lactamase enzymes produced by certain bacteria.

C. Penicillin:

Penicillin is one of the earliest discovered and most widely used beta-lactam antibiotics. However, many bacteria have developed resistance to penicillin by producing beta-lactamase enzymes. Penicillin itself does not inhibit beta-lactamase; instead, it is often combined with beta-lactamase inhibitors to enhance its effectiveness against beta-lactamase-producing bacteria.

D. Zosyn (piperacillin/tazobactam):

Zosyn is a combination antibiotic containing piperacillin, a broad-spectrum penicillin antibiotic, and tazobactam, a beta-lactamase inhibitor. Tazobactam inhibits the action of beta-lactamase enzymes produced by bacteria, allowing piperacillin to exert its antibacterial effects without being degraded by beta-lactamase. Therefore, Zosyn is the correct answer as it contains a drug that inhibits bacterial beta-lactamase.

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Free Nursing Study Resources

Correct Answer is C

Explanation

A. By assessing the temperature every 4 hours:

Monitoring temperature every 4 hours is a common practice in hospitalized patients to detect fever, which could indicate an infection or an inflammatory response. However, this method does not directly assess the therapeutic blood levels of vancomycin. Fever alone does not provide specific information about the effectiveness or concentration of the antibiotic in the bloodstream.

B. By repeating a culture and sensitivity test on day 3:

Culture and sensitivity tests involve taking a sample from the patient (such as blood, urine, or sputum) and growing the microorganisms in a laboratory to identify the causative organism and determine its susceptibility to antibiotics. While this test is essential for identifying the appropriate antibiotic therapy initially, repeating it on day 3 does not directly monitor therapeutic blood levels of vancomycin. It also doesn't provide real-time information about the concentration of vancomycin in the bloodstream.

C. By obtaining drug peak and trough levels:

This choice involves measuring the highest (peak) and lowest (trough) concentrations of vancomycin in the bloodstream. Peak levels are typically measured about 1 hour after the completion of a vancomycin infusion, while trough levels are measured just before the next dose is administered. These measurements allow healthcare providers to ensure that the drug concentration remains within the therapeutic range to effectively treat the infection while minimizing the risk of toxicity.

D. By assessing for breathlessness:

Assessing for breathlessness is important for monitoring respiratory status, particularly in patients receiving vancomycin, as rare side effects like red-man syndrome or anaphylaxis can cause respiratory distress. However, this method does not directly monitor therapeutic blood levels of vancomycin.

A. 36 months B. 6-12 months C. 2-4 weeks D. 7-10 days

Correct Answer is B

Explanation

A. 36 months:

This duration is longer than typical treatment courses for TB. While treatment for drug-resistant TB may require an extended duration, standard treatment for drug-sensitive TB typically lasts for a shorter period.

B. 6-12 months:

This duration is within the typical range for the treatment of drug-sensitive TB. Standard treatment regimens for drug-sensitive TB usually involve a combination of multiple antibiotics taken for 6 to 9 months, sometimes extending up to 12 months depending on factors such as the severity of the disease and the patient's response to treatment.

C. 2-4 weeks:

This duration is too short for the treatment of TB. TB treatment requires a prolonged course of antibiotics to ensure the complete eradication of the bacteria and to prevent the development of drug resistance.

D. 7-10 days:

This duration is too short for the treatment of TB. TB treatment typically lasts for several months rather than days, as it involves a combination of antibiotics taken for an extended period to effectively treat the infection.

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Which of the following drugs inhibit bacterial beta-lactamase?

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