Authors present in this study results and experiences with monitoring of sedation with BIS index and comparison with Ramsay and Cook sedation scores in ICU. The group of 20 patients hospitalized in our ICU (October 1998 – September 1999). Including criteria – GCS 15 and the need of continual sedation or analgosedation. The values of BIS index were recorded to protocol at any time of change in the level of sedation. At the same time this level of sedation was evaluated by two physicians by use of Ramsay and Cook scores. Our results and experiences with continual monitoring show that to rely only on BIS index or to titrate drugs according to these values is impossible. We admit that higher number of patients for better evaluating is needed.

        Key words: BIS index – level of sedation or analgosedation