To assess the current use of sedation and analgesia in a large sample of French intensive care units (ICUs) and to define structural characteristics of the units that use a written procedure. Self-reported survey. Three hundred and sixty French ICUs were presented the questionnaire in September 2007. Surveys were received from 228 (60.6%) ICUs. Midazolam was used in more than 50% of the patients in 79.2% of the ICUs and propofol in 22.2% of the ICUs. Sufentanil was the most frequently used morphinic. A sedation-scale was used in 68.8% of the units (80.3% Ramsay score). Sedation was assessed at least every 4hours in 61% of ICUs. A pain-scale was used in 88.9% of the ICUs, but only 12.5% in the non-communicant patients. A written procedure was used in 29.4% of the units only. In multivariate analysis, use in the ICU of a written procedure for the early management of patients with septic shock and/or intensive insulin therapy was the single variable significantly associated with presence of a written procedure for sedation and analgesia (respectively OR 4.37; p<0.0001 and OR 5.64; p=0.032). Although more than two-third of the responding ICUs reported the use of sedation-and-pain-scales, frequency of assessment was low, and objective assessment of pain in the non-communicating patients was extremely uncommon. Similarly, the use of written procedure was low. The use of sedation-analgesia written procedure in an ICU seems strongly influenced by a more global involvement of the ICU in the protocolisation of complex care. These findings support the reinforcement of educational programs.