_Clostridioides difficile_ pathophysiology is defined by a dual-toxin mechanism wherein Enterotoxin A inactivates Rho family proteins to compromise epithelial junctions and Cytotoxin B depolymerizes the actin cytoskeleton, resulting in fluid imbalance and colonic mucosal damage. The clinical manifestation arises from antibiotic-induced disruption of gut flora that permits this Gram-positive anaerobic bacterium to proliferate and express virulence factors causing pseudomembranous colitis, ileus, or toxic megacolon. Diagnosis relies on high-sensitivity detection of glutamate dehydrogenase followed by toxin-specific confirmation, while management adheres to tiered antibiotic stewardship protocols distinguishing between initial infection and recurrence based on evolving clinical guidelines.
_Clostridioides difficile_ pathophysiology is defined by a dual-toxin mechanism wherein Enterotoxin A inactivates Rho family proteins to compromise epithelial junctions and Cytotoxin B depolymerizes …