title: Pulmonary contusion in severe head trauma patients: impact on gas exchange and outcome.
abstract: OBJECTIVE
  To evaluate the impact on morbidity and mortality of pulmonary contusion in multiple-trauma patients with severe head trauma.
  
  
  METHODS
  Matched-paired, case-control study
  
  
  METHODS
  ICU at a tertiary university hospital.
  
  
  METHODS
  During a 3-year period, 313 consecutive multiple-trauma patients with severe head trauma (Glasgow coma scale [GCS], </= 8) who were admitted to the ICU.
  
  
  METHODS
  Case-control matching criteria were as follows: (1) age difference within 5 years; (2) sex; (3) GCS in two categories; (4) similar pattern of injury; and (5) simplified acute physiology score II in five categories. A pulmonary contusion, defined by the clinical context and the result of a chest CT scan, was diagnosed in 90 patients. Analysis was performed on 90 pairs who were matched with 100% success.
  
  
  RESULTS
  Ninety patients (29%) presented a diagnosis of pulmonary contusion. The presence of pulmonary contusion had an impact on the PaO(2)/fraction of inspired oxygen (FIO(2)) ratio, which was significantly reduced in patients with a pulmonary contusion. The ICU stay, the occurrence of complications such as nosocomial pneumonia or ARDS, the Glasgow outcome scale, and the mortality rate did not significantly differ between case patients and control subjects. Mortality also was not affected when patients were stratified according to the severity of the PaO(2)/FIO(2) ratio.
  
  
  CONCLUSIONS
  In the study patients, pulmonary contusion alters gas exchange but does not appear to increase the morbidity and mortality of multiple-trauma patients with head trauma. A sample-size effect may limit the interpretation of the study.
authors.affiliation: Intensive Care Unit and Trauma Center, Department of Biostatistics, Nord Hospital, AP-HM, Marseilles University Hospital System, School of Medicine, 13915 Marseilles cedex, France. marc.leone@ap-hm.fr
authors.forename: Marc
authors.initials: M
authors.lastname: Leone
authors.forename: Jacques
authors.initials: J
authors.lastname: Albanèse
authors.forename: Sébastien
authors.initials: S
authors.lastname: Rousseau
authors.forename: François
authors.initials: F
authors.lastname: Antonini
authors.forename: Myriam
authors.initials: M
authors.lastname: Dubuc
authors.forename: Bernard
authors.initials: B
authors.lastname: Alliez
authors.forename: Claude
authors.initials: C
authors.lastname: Martin
mesh_terms: D018806:APACHE; D000328:Adult; D016022:Case-Control Studies; D006259:Craniocerebral Trauma / Q000145:classification / Q000401:mortality*; D003428:Cross Infection / Q000209:etiology; D005260:Female; D015600:Glasgow Coma Scale; D006801:Humans; D015601:Injury Severity Score; D007362:Intensive Care Units; D007902:Length of Stay; D055370:Lung Injury; D008297:Male; D009104:Multiple Trauma / Q000145:classification / Q000401:mortality*; D011659:Pulmonary Gas Exchange