title: Puerperal mastitis requiring hospitalization during a nine-year period.
abstract: OBJECTIVE
  To review the clinical and microbiologic features of isolates among patients with puerperal mastitis requiring hospitalization.
  
  
  METHODS
  Between January 2000 and December 2008, postpartum patients who were hospitalized for mastitis were enrolled. The clinical characteristics, microbiologic results, management, and outcomes were reviewed.
  
  
  RESULTS
  One hundred twenty-seven cases were enrolled. Seventy-six patients (59.9%) underwent incision and drainage for abscess drainage, all of whom discontinued breastfeeding. Staphylococcus aureus and coagulase-negative staphylococci were the most common isolates. Among 81 isolates of S aureus, 52 (64.2%) were resistant to oxacillin. Patients undergoing incision and drainage were more likely to discontinue breastfeeding, had a longer duration of symptoms, a longer hospitalization, a higher platelet count and higher rates of infection caused by S aureus and oxacillin-resistant S aureus.
  
  
  CONCLUSIONS
  Oxacillin-resistant S aureus has emerged in patients with puerperal mastitis during the past decade, and often necessitates incision and drainage, which results in discontinuation of breastfeeding.
authors.affiliation: Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, Tainan, Taiwan.
authors.forename: I-Wen
authors.initials: IW
authors.lastname: Lee
authors.forename: Lin
authors.initials: L
authors.lastname: Kang
authors.forename: Hui-Ping
authors.initials: HP
authors.lastname: Hsu
authors.forename: Pao-Lin
authors.initials: PL
authors.lastname: Kuo
authors.forename: Chia-Ming
authors.initials: CM
authors.lastname: Chang
mesh_terms: D000038:Abscess / Q000382:microbiology / Q000628:therapy; D000328:Adult; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D001831:Body Temperature; D001942:Breast Feeding; D004322:Drainage; D024881:Drug Resistance, Bacterial; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D008413:Mastitis / Q000453:epidemiology* / Q000382:microbiology* / Q000628:therapy; D010068:Oxacillin / Q000627:therapeutic use; D010976:Platelet Count; D011644:Puerperal Disorders / Q000453:epidemiology* / Q000382:microbiology* / Q000628:therapy; D013203:Staphylococcal Infections / Q000188:drug therapy / Q000453:epidemiology; D013290:Streptococcal Infections / Q000188:drug therapy / Q000453:epidemiology; D013624:Taiwan / Q000453:epidemiology
chemical_list: D000900:Anti-Bacterial Agents; D010068:Oxacillin