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Which class of antibiotic is associated with cartilage toxicity and rupture of the Achilles tendon?

A.

Penicillins

B.

Fluoroquinolones

C.

Aminoglycosides

D.

Sulfonamides

Answer and Explanation

The Correct Answer is B

A. Penicillins:

Penicillins are a class of antibiotics commonly used to treat various bacterial infections. While they are generally well-tolerated and have a low incidence of adverse effects, they are not typically associated with cartilage toxicity or tendon rupture, including the Achilles tendon.

B. Fluoroquinolones:

Fluoroquinolones are broad-spectrum antibiotics known for their effectiveness against a wide range of bacteria. However, they are associated with several significant adverse effects, including cartilage toxicity and tendon rupture. These adverse effects, particularly tendon rupture, are most commonly observed in weight-bearing tendons such as the Achilles tendon. Fluoroquinolones should be used cautiously, especially in populations at higher risk for tendon injuries.

C. Aminoglycosides:

Aminoglycosides are another class of antibiotics used to treat severe bacterial infections. While they have their own set of potential adverse effects, such as nephrotoxicity and ototoxicity, they are not associated with cartilage toxicity or tendon rupture.

D. Sulfonamides:

Sulfonamides are antibiotics that inhibit bacterial growth by interfering with the synthesis of folate. While they can cause various adverse effects, including skin reactions and hematologic abnormalities, they are not associated with cartilage toxicity or tendon rupture.


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Related Questions

Correct Answer is C

Explanation

A. The herbal product must contain only one active ingredient:

This statement is not a legal requirement contained in DSHEA. Many dietary supplements contain multiple active ingredients, such as vitamins, minerals, herbs, amino acids, and other substances. DSHEA does not mandate that dietary supplements contain only one active ingredient.

B. Effectiveness must be demonstrated by the manufacturer:

DSHEA does not require manufacturers to demonstrate the effectiveness of dietary supplements before marketing. Unlike pharmaceutical drugs, which must undergo premarket approval by the Food and Drug Administration (FDA) to demonstrate safety and efficacy, dietary supplements do not need to prove effectiveness to be marketed. Instead, manufacturers are responsible for ensuring the safety of their products and making truthful claims on product labels.

C. Dietary supplements must state that the product is not intended to diagnose, treat, cure, or prevent any disease:

This statement accurately reflects a legal requirement contained in DSHEA. Under DSHEA, dietary supplement labels must include a disclaimer stating that the product is not intended to diagnose, treat, cure, or prevent any disease. This disclaimer helps to clarify that dietary supplements are intended to support general health and well-being rather than to treat specific diseases or medical conditions.

D. Dietary supplements must be tested for safety prior to marketing:

While DSHEA requires manufacturers to ensure the safety of their dietary supplements, it does not mandate standardized premarket testing for safety by regulatory authorities. Instead, manufacturers are responsible for conducting safety assessments and ensuring that their products are safe for consumers. The FDA may take action against manufacturers if a product is found to be unsafe or if it violates regulatory requirements, but premarket testing is not a specific legal requirement under DSHEA.

Correct Answer is ["50"]

Explanation

To calculate the infusion rate in gtt/min, the nurse needs to use the formula:

Infusion rate (gtt/min) = Volume (mL) x Drop factor (gtt/mL) / Time (min)

Plugging in the given values, we get:

Infusion rate (gtt/min) = 400 mL x 60 gtt/mL / 480 min

Simplifying, we get:

Infusion rate (gtt/min) = 50 gtt/min

Therefore, the nurse should set the manual IV infusion to deliver 50 gtt/min.

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