Assessing Sedation and Analgesia in Critically Ill Patients
Author Information
Author(s): Haenggi Matthias, Ypparila-Wolters Heidi, Bieri Christine, Steiner Carola, Takala Jukka, Korhonen Ilkka, Jakob Stephan M
Primary Institution: Bern University Hospital and University of Bern
Hypothesis
There are thresholds beyond which drugs and intratracheal suctioning do not result in significant changes in the respective processed EEG parameters.
Conclusion
Unpleasant or painful stimuli and sedative and analgesic drugs are associated with significant changes in processed EEG parameters, but clinical indications for drug administration were not reflected by these parameters.
Supporting Evidence
- Processed EEG parameters did not effectively predict sedation levels.
- Patients receiving sedation boluses showed significant decreases in EEG values.
- Clinical indications for drug administration were not reflected in EEG parameters.
Takeaway
Doctors wanted to see if brain activity could help them know how sedated patients are in the ICU, but it didn't really work as they hoped.
Methodology
Electrodes for monitoring bispectral index and entropy were placed on the foreheads of 44 critically ill patients requiring mechanical ventilation, with sedation targeted using the Ramsay Sedation Scale.
Potential Biases
Nurses' subjective assessments and decisions on drug administration may introduce bias.
Limitations
The study design did not allow for consistent collection of sedation scores at all time points, and the overlap of EEG parameters limits their use for distinguishing sedation levels.
Participant Demographics
Median age of participants was 66 years, with a range from 38 to 83 years.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website