This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Apart from Escherichia coli, the other most common organism implicated in acute suppurative bacterial peritonitis is- \nSelect and explain. \nA. Bacteroides, B. Klebsiella, C. Peptostreptococcus, D. Pseudomonas', 'role': 'user'}, {'content': 'Answer: A \nExplanation: • When bacteria contaminate the peritoneum as a result of spillage from an intra-abdominal viscus.\n• Infection in secondary bacterial peritonitis is polymicrobial\n• E. coli and Bacteroides are MC organisms.\n• The species of organism isolated vary with the source of the initial process and the normal flora present at the site.\n• Peritonitis is one of the MC complications of CAPDQ, occurring with an incidence of approximately one episode every 1 to 3 years.\n• Refractory or recurrent peritonitis is MC cause of technical failure of CAPD.\n• MC organism: Staphylococcus epidermidis\xa0(30–50%).\nClinical Features\n• Patients present with abdominal pain, fever, and cloudy peritoneal dialysate containing >100 WBC/mm3, with >50% of the cells being neutrophils.\n• Gram staining detects organisms only in 10–40% of cases.\nTreatment\n• CAPD associated peritonitis is treated by the intraperitoneal administration of antibiotics, usually a first-generation cephalosporin.\n• Overall, 75% of infections are cured by culture-directed antibiotic therapy.\n• Recurrent or persistent peritonitis requires removal of the dialysis catheter and resumption of hemodialysis.', 'role': 'assistant'}]