The correct answer is B.Gentamicin Explanation Mechanism: Aminoglycosides like gentamicin can inhibit the pre-synaptic release of acetylcholine and decrease post-synaptic sensitivity to acetylcholine at the neuromuscular junction. Risk: This mechanism can severely exacerbate muscle weakness and trigger a life-threatening myasthenic crisis in patients with Myasthenia Gravis. Other choices: While macrolides (like Azithromycin) also carry warnings for Myasthenia Gravis, aminoglycosides like Gentamicin are classic, well-documented agents known for directly inducing or worsening a neuromuscular blockade. Amoxicillin and Doxycycline are generally considered safe alternatives.
August 23, 2026 576
