Correct Answer: D

Rationale: Fluoroquinolones are known to be associated with tendon dysfunction or rupture. These drugs can weaken the tendons, leading to potential issues such as tendonitis or even tendon rupture. It is essential for healthcare providers to be cautious when prescribing fluoroquinolones, especially in patients who may be at higher risk for tendon-related complications.

Correct Answer: B

Rationale: Atenolol, a beta-blocker, is not typically associated with tachycardia. Instead, drug toxicity of Atenolol is more commonly linked to bradycardia due to its beta-blocking effects on the heart's electrical conduction system. Symptoms of Atenolol toxicity may include heart failure (CHF), AV block, and a sedative appearance, but not tachycardia.

Correct Answer: B

Rationale: When a drug name ends in the suffix -navir, it indicates that the drug is a protease inhibitor. Protease inhibitors are commonly used in antiviral therapy to treat infections by inhibiting viral replication. Therefore, the correct answer is B: Protease inhibitor.

Correct Answer: C

Rationale: Hepatitis is a known side effect of isoniazid. It is important to monitor patients on isoniazid for signs of liver damage, including hepatitis, as part of their treatment regimen for tuberculosis.

Correct Answer: D

Rationale: Fluoroquinolones are known to be associated with tendon dysfunction or rupture. These drugs can weaken the tendons, leading to potential issues such as tendonitis or even tendon rupture. It is essential for healthcare providers to be cautious when prescribing fluoroquinolones, especially in patients who may be at higher risk for tendon-related complications.