title: Patients with existing pressure ulcers admitted to acute care.
abstract: OBJECTIVE
  This study describes the characteristics of patients with pressure ulcers present on admission to the hospital and predictors of pressure ulcer presence and severity.
  
  
  METHODS
  Prospective cohort study.
  
  
  METHODS
  Adults (n = 267) admitted to a Pacific Basin military hospital who were expected to stay more than 24 hours.
  
  
  METHODS
  Braden scale, portable vital sign machine, and pulse oximeter.
  
  
  METHODS
  Pressure ulcer risk was evaluated and skin inspection was performed. Demographic, physiologic, and laboratory data were obtained. Medical history and patient acuity were recorded.
  
  
  RESULTS
  Thirty-four of 267 subjects (12.8%) had a pressure ulcer. Most were male and white. Their mean age was 65.7 years; mean albumin level, 2.9 g/dL: mean hematocrit level, 31.9 vol%; mean oxygen saturation, 95.3 mm Hg; and mean hemoglobin level, 10.7 g/dL. The mean Braden scale score for subjects without ulcers on admission was 19.7, and it was 15.9 for those with ulcers (P < .05). Analysis of variance showed that subjects with pressure ulcers had a significantly lower albumin level, total lymphocyte count, hematocrit level, and hemoglobin level. These subjects were significantly older and had a longer hospital length of stay. Regression showed that albumin level, oxygen saturation, and length of stay (P < .01) accounted for 11.3% of the variance of pressure ulcer presence and that albumin level and length of stay (P < .001) accounted for 11.2% of the variance in ulcer severity.
  
  
  CONCLUSIONS
  Poorer nutritional status and decreased oxygen perfusion were predictors of pressure ulcers on admission. Nutrition and length of stay were predictors of ulcer severity. Further research is warranted.
authors.affiliation: Tripler Army Medical Center, Honolulu, Hawaii, USA.
authors.forename: D F
authors.initials: DF
authors.lastname: Williams
authors.forename: N A
authors.initials: NA
authors.lastname: Stotts
authors.forename: K
authors.initials: K
authors.lastname: Nelson
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D010139:Pacific Islands / Q000453:epidemiology; D010343:Patient Admission / Q000706:statistics & numerical data*; D003668:Pressure Ulcer / Q000175:diagnosis / Q000453:epidemiology*; D011379:Prognosis; D011446:Prospective Studies; D012044:Regression Analysis; D012307:Risk Factors; D012720:Severity of Illness Index