Severe vitamin K deficiency-associated coagulopathy triggered by Clostridioides difficile infection and antibiotic-associated dysbiosis: A case report and literature review

This case illustrates a rare but clinically significant complication of CDI: profound vitamin K deficiency-associated coagulopathy. Clinicians should maintain a high index of suspicion for vitamin K deficiency in elderly, malnourished, and antibiotic-exposed patients with CDI who present with unexplained coagulopathy or bleeding.