title: [Toward a medical approach to the evaluation of activity in a physician-staffed mobile intensive care unit].
abstract: OBJECTIVE
  To test the ability of various medical criteria for classifying the patients in a physician-staffed mobile intensive care unit (MICU) by referring to intervention times.
  
  
  METHODS
  Prospective, open study.
  
  
  METHODS
  For all the on-scene interventions of the MICUs over a 10-month period, the following data were prospectively collected: pre-hospital diagnosis, initial severity score, medical care score, immediate outcome and three intervention times: on-scene time (OS), time spent with the patient by the MICU team (MT), total duration of intervention (TD).
  
  
  RESULTS
  A total of 3,672 MICU interventions were included. Median times were 45 min (32-59) for OS, 66 min (41-91) for MT and 85 min (61-116) for TD. The amount of interventions in a city was correlated with the population (R = 0.95; P < 0.001). The medical care score was greater than one in more than half of the patients. It defined five groups of patients which were different for the three intervention times (P < or = 0.001). A third of the patients were directly transported by the MICU to an ICU. For the median test, immediate outcome groups were different for the three intervention times (P < 0.001). After exclusion of patients with initial cardiac arrest, initial severity score defined five groups of patients which were different for the three intervention times (P < 0.002). Initial severity score and medical care score were correlated (R = 0.37; P < 0.001).
  
  
  CONCLUSIONS
  A classification of the patients based on immediate outcome would be a more accurate indicator of the variability in medical care and consumption of resources in a physician-staffed MICU. In addition, a medical intervention score should be developed to better characterise this medical activity.
authors.affiliation: Samu 94, CHU Henri-Mondor, Assistance Publique-Hôpitaux de Paris, Créteil, France.
authors.forename: J P
authors.initials: JP
authors.lastname: Cantineau
authors.forename: P
authors.initials: P
authors.lastname: Merckx
authors.forename: P
authors.initials: P
authors.lastname: Reynaud
authors.forename: F
authors.initials: F
authors.lastname: Aussavy
authors.forename: C
authors.initials: C
authors.lastname: Berson
authors.forename: L
authors.initials: L
authors.lastname: Simon
mesh_terms: D000328:Adult; D000368:Aged; D000552:Ambulances / Q000592:standards*; D005260:Female; D015600:Glasgow Coma Scale; D006323:Heart Arrest / Q000628:therapy; D006801:Humans; D007362:Intensive Care Units / Q000592:standards*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011785:Quality Assurance, Health Care; D013997:Time Factors