Which of the following would reduce the absorption of ciprofloxacin?

Alcohol

Intense physical exertion

Fruit juices, in particular grapefruit juice

Antacids or mineral supplements

Answer and Explanation

The Correct Answer is D

A.Alcohol:

Alcohol consumption does not directly reduce the absorption of ciprofloxacin. However, alcohol can interact with certain medications and may exacerbate side effects such as dizziness, drowsiness, and gastrointestinal upset. It’s generally advisable to avoid excessive alcohol consumption while taking ciprofloxacin, but alcohol itself does not significantly affect the absorption of the medication.

B. Intense physical exertion:

Intense physical exertion is unlikely to directly reduce the absorption of ciprofloxacin. However, gastrointestinal motility may increase during intense exercise, potentially affecting the absorption of oral medications. In some cases, gastrointestinal disturbances associated with physical exertion may affect the absorption of ciprofloxacin, but this effect is generally minor and not a significant concern for most individuals.

C. Fruit juices, in particular grapefruit juice:

Grapefruit juice is known to interact with certain medications by inhibiting intestinal enzymes responsible for drug metabolism, leading to increased drug concentrations in the bloodstream. However, ciprofloxacin is not significantly affected by grapefruit juice. In fact, fruit juices, including grapefruit juice, are generally not known to reduce the absorption of ciprofloxacin.

D. Antacids or mineral supplements:

Antacids and mineral supplements containing aluminum, magnesium, calcium, or iron can significantly reduce the absorption of ciprofloxacin when taken concurrently. These substances can form complexes with ciprofloxacin in the gastrointestinal tract, reducing its bioavailability. Therefore, it’s recommended to avoid taking antacids or mineral supplements containing these minerals within a few hours before or after taking ciprofloxacin to avoid interference with its absorption.

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Correct Answer is C

Explanation

A. An infection that is difficult to treat:

This choice describes a challenging infection but does not specifically capture the concept of a superinfection. While superinfections can indeed be difficult to treat, they are defined more specifically as secondary infections that occur due to disruption of the normal microbial flora during the treatment of an initial infection.

B. An infection caused by a weakened immune system:

This choice describes an infection that occurs due to a compromised or weakened immune system, which can indeed increase the risk of developing infections, including superinfections. However, it does not fully encompass the definition of a superinfection, which specifically involves the overgrowth of opportunistic pathogens after the disruption of normal microbial flora by antimicrobial treatment.

C. A secondary infection that occurs when microorganisms normally present in the body are killed by the drug:

This choice accurately describes what a superinfection is. It highlights the key concept that a superinfection is a secondary infection that arises when antimicrobial treatment disrupts or kills the normal microbial flora of the body, allowing opportunistic pathogens to overgrow and cause infection.

D. A drug-resistant infection:

This choice describes an infection caused by microorganisms that are resistant to the effects of antimicrobial drugs. While drug resistance is a significant concern in healthcare, it does not specifically define a superinfection. Superinfections can involve drug-resistant microorganisms, but they are not solely characterized by drug resistance; rather, they are secondary infections resulting from the disruption of normal microbial flora during antimicrobial treatment.

A. goldenseal B. ceftriaxone (Rocephin) C. penicillin D. Zosyn (piperacillin/tazobactam)

Correct Answer is D

Explanation

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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Which of the following would reduce the absorption of ciprofloxacin?

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Naxlex Comprehensive Predictor Exams

The nurse is discussing treatment for a superinfection with a client and family members. The family asks the nurse what a superinfection is. What is the best response by the nurse?

Correct Answer is C

Explanation

Which of the following drugs inhibit bacterial beta-lactamase?

Correct Answer is D

Explanation

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A nurse instructs the patient that if ciprofloxacin (Cipro) is taken with antacids, absorption is