This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
Most common cause of Bacteremia includes 
Select and explain. 
A. Dental extraction, B. Post Sigmoidoscopy, C. Superficial skin infections, D. Elective surgery
B: Post Sigmoidoscopy
Answer: B: Post Sigmoidoscopy 
Explanation: (B) Post Sigmoidoscopy # BACTERAEMIA is unusual following superficial SSIs.> Common after anstomotic break down (deep SSIs).> Bacteraemia is dangerous if the patient has a prosthesis.> Sepsis accompanied by MODS may follow anastomotic leak.> Bacteraemia is common after indwelling catheterization.# Bacteraemia is common after endoscopy especially colonoscopy or sigmoidoscopy.