title: Factors Affecting Treatment Outcome of Graft Infection Following Penetrating Keratoplasty.
abstract: OBJECTIVE
  To evaluate the factors affecting treatment outcome of graft infection following penetrating keratoplasty (PKP).
  
  
  METHODS
  In this retrospective study, 28 patients who underwent PKP between January 2005 and January 2013 and who were diagnosed with graft infection were classified into a treatment success group or a treatment failure group. Demographic and clinical characteristics, as well as the results of the microbiologic investigation, were analyzed and compared. A subsequent binary logistic regression analysis was performed to identify the prognostic factors affecting treatment outcome.
  
  
  RESULTS
  Graft infection occurred at a mean of 38.29 ± 36.16 months (range, 1 to 96 months) after PKP. Seventeen patients developed bacterial keratitis, and 11 patients developed fungal keratitis. Overall, of the 28 patients, nine (32.1%) were classified in the treatment failure group. Multivariate analysis identified pre-existing graft failure (p = 0.019), interval longer than 72 hours between donor death and PKP (p = 0.010), and fungal infection (p = 0.026) as significant risk factors for treatment failure.
  
  
  CONCLUSIONS
  Pre-existing graft failure, extended interval between donor death and PKP, and fungal infection were important risk factors for treatment failure of graft infection following PKP.
authors.affiliation: Department of Ophthalmology and Research Institute of Medical Sciences, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Mi Sun
authors.initials: MS
authors.lastname: Sung
authors.affiliation: Department of Ophthalmology and Research Institute of Medical Sciences, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Won
authors.initials: W
authors.lastname: Choi
authors.affiliation: Department of Ophthalmology, Chonbuk National University Hospital, Chonbuk National University Medical School, Jeonju, Korea.
authors.forename: In Cheon
authors.initials: IC
authors.lastname: You
authors.affiliation: Department of Ophthalmology and Research Institute of Medical Sciences, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea.
authors.forename: Kyung Chul
authors.initials: KC
authors.lastname: Yoon
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015818:Eye Infections, Bacterial / Q000175:diagnosis / Q000209:etiology*; D015821:Eye Infections, Fungal / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D006085:Graft Survival; D006801:Humans; D015948:Keratoplasty, Penetrating / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012189:Retrospective Studies; D012307:Risk Factors; D013530:Surgical Wound Infection / Q000175:diagnosis / Q000209:etiology*; D016896:Treatment Outcome
keywords: Graft infection; Penetrating keratoplasty; Prognostic factor; Treatment outcome