A patient of post-cholecystectomy biliary stricture has undergone an ERCP three days ago. Following this she has developed acute cholangitis. The most likely organism is
High-Yield Explanation
The most common bacteria linked to ascending /acute cholangitis is Escherichia coli(25-50%),followed by other gram negative bacilli like Klebsiella(15-20%),proteus and pseudomonas.Among gram positive,enterococcus is common(10-20%)and anaerobes like Clostridium. Reference:SRB's manual of surgery,5th edition,page no:643