All of the following are side effects of Linezolid, EXCEPT:
**Question:** All of the following are side effects of Linezolid, EXCEPT:
A. Skin rash
B. Nausea
C. Encephalopathy
D. Hypotension
**Core Concept:** Linezolid is an oxazolidinone antibiotic used to treat certain bacterial infections. It works by inhibiting bacterial protein synthesis by binding to the 23S rRNA of the 50S bacterial ribosomal subunit. Linezolid has a broad spectrum of activity against Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE).
**Why the Correct Answer is Right:** Hypotension is a significant side effect of Linezolid due to its vasodilatory action, which is caused by the inhibition of protein synthesis and subsequent depletion of bacterial toxins. This depletion leads to a decrease in bacterial-derived vasoconstrictor activity, resulting in vasodilation and hypotension.
**Why Each Wrong Option is Incorrect:**
A. Skin rash: Linezolid can cause skin reactions, but hypersensitivity reactions like rash are generally not listed as a specific side effect.
B. Nausea: While nausea is a potential side effect of Linezolid, hypotension is a more severe and potentially life-threatening side effect.
C. Encephalopathy: Encephalopathy is a side effect of Linezolid, but it is less likely to be the correct answer as hypotension is a more immediate and severe consequence of Linezolid therapy.
**Why the Correct Answer is Right:**
Hypotension is the correct answer because it is a direct consequence of Linezolid therapy. The antibiotic's mechanism of action involves inhibition of protein synthesis, leading to depletion of bacterial toxins, which results in decreased vasoconstrictor activity and subsequent vasodilation, ultimately causing hypotension.
**Clinical Pearl:**
When prescribing Linezolid, clinicians should carefully monitor patients for signs of hypotension and promptly adjust the dosage or therapy if necessary, as this severe side effect can lead to serious complications, including cardiac dysfunction and renal impairment.