Path
Peritonitis in a patient on Continuous Ambulatory Peritoneal Dialysis (CAPD) is usually due to gram-positive pathogens such as Staphylococcus aureus or epidermidis.
Dx
It is usually characterized by abdominal pain and over 100 white blood cells (typically polymorphonuclear leukocytes) in a sample of peritoneal dialysis fluid.
Tx
IV vancomycin would be a reasonable treatment to cover gram-positive pathogens.