title: Colonization of skin and development of peritonitis due to coagulase-negative staphylococci in patients undergoing peritoneal dialysis.
abstract: Coagulase-negative staphylococci, part of the normal skin flora, frequently colonize bioprosthetic devices and are the most common cause of peritonitis in patients undergoing peritoneal dialysis. Using the API STAPH-IDENT system (Analytab Products, Plainview, New York) and plasmid pattern analysis, we investigated the importance of chronic carriage of coagulase-negative staphylococci in the development of peritonitis due to these organisms. During a nine-month period, 182 surveillance cultures of pericatheter skin and anterior nares from 30 patients yielded 102 strains of coagulase-negative staphylococci. Twelve of these patients had 20 episodes of peritonitis due to these organisms. Staphylococcus epidermidis accounted for 75% of surveillance and 79% of peritonitis-associated strains. By plasmid pattern analysis of 47 surveillance and 16 peritonitis-associated strains, only three patients carried identical coagulase-negative staphylococci on two or more occasions, and only three patients developed peritonitis due to organisms cultured previously from body surface sites.
mesh_terms: D003030:Coagulase / Q000378:metabolism; D006801:Humans; D009666:Nose / Q000382:microbiology; D010531:Peritoneal Dialysis, Continuous Ambulatory / Q000009:adverse effects*; D010538:Peritonitis / Q000209:etiology* / Q000382:microbiology; D012867:Skin / Q000382:microbiology*; D013203:Staphylococcal Infections / Q000209:etiology* / Q000382:microbiology; D013210:Staphylococcus / Q000201:enzymology / Q000254:growth & development* / Q000302:isolation & purification; D013212:Staphylococcus epidermidis / Q000201:enzymology / Q000254:growth & development / Q000302:isolation & purification
chemical_list: D003030:Coagulase