title: Diagnostic accuracy of peritoneal lavage in patients with pelvic fractures.
abstract: OBJECTIVE
  To determine the accuracy of diagnostic peritoneal lavage (DPL) for the evaluation of intraabdominal injury in patients with a pelvic fracture as a result of blunt trauma.
  
  
  METHODS
  Retrospective cohort analysis.
  
  
  METHODS
  Level I trauma center in metropolitan Seattle, Wash.
  
  
  METHODS
  Four hundred ninety-seven consecutive patients admitted with pelvic fractures following blunt trauma during a 60-month period.
  
  
  METHODS
  Positive results of DPL, defined by one of the following: an immediate aspiration of more than 10 mL of gross blood; a red blood cell count of more than 0.0001 x 10(12)/L; a white blood cell count greater than 0.0005 x 10(9)/L; an elevated amylase, bilirubin, or creatinine level; or organic particles or bacteria in the effluent returned after installation of 1 L of crystalloid fluid lavaged in the peritoneal cavity.
  
  
  RESULTS
  Two hundred eighty-six patients underwent DPL. For 80 patients (28.0%), results of DPL were positive and for 194 patients (67.8%) the results of DPL were negative. For two patients (0.7%), results of DPL were false positive for a sensitivity of 94%. For another two patients (0.7%), the results of DPL were false negative for a specificity of 99%. As a diagnostic modality, DPL has a positive predictive value of 98% and a negative predictive value of 97%.
  
  
  CONCLUSIONS
  Diagnostic peritoneal lavage is a reliable method for the evaluation of intra-abdominal injury and should remain a standard component in the evaluation of patients following blunt injury with or without pelvic fractures.
authors.affiliation: Department of Surgery, University of Washington School of Medicine, Seattle.
authors.forename: C
authors.initials: C
authors.lastname: Mendez
authors.forename: K D
authors.initials: KD
authors.lastname: Gubler
authors.forename: R V
authors.initials: RV
authors.lastname: Maier
mesh_terms: D000007:Abdominal Injuries / Q000175:diagnosis* / Q000209:etiology*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D050723:Fractures, Bone / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010384:Pelvic Bones / Q000293:injuries*; D010533:Peritoneal Lavage; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014949:Wounds, Nonpenetrating / Q000150:complications*