Inhalation Sedation in Subjects With ARDS Undergoing Continuous Lateral Rotational Therapy

Area of Science:

• Critical Care Medicine
• Anesthesiology
• Respiratory Therapy

Background:

• Continuous lateral rotational therapy (CLRT) is used for ARDS patients, but optimal sedation strategies are unclear.
• Isoflurane offers potential advantages over propofol or midazolam for sedation control.
• The use of isoflurane with CLRT requires further investigation.

Purpose of the Study:

• To compare isoflurane with propofol/midazolam for sedation in ARDS patients undergoing CLRT.
• To evaluate sedation depth, opioid consumption, lung function, and hemodynamics.
• To assess the feasibility of isoflurane sedation during CLRT.

Main Methods:

• Retrospective study of 38 critically ill surgical patients with ARDS on CLRT.
• Comparison of 19 patients sedated with isoflurane versus 19 with propofol or midazolam.
• Sedation assessed using the Richmond Agitation-Sedation Scale (RASS) and AnaConDa-system.

Main Results:

• Isoflurane group showed significantly lower RASS scores and reduced opioid consumption.
• Spontaneous breathing occurred in 90% of isoflurane patients vs. 16% in others.
• Isoflurane decreased the difference between peak inspiratory pressure and PEEP; oxygenation improved in both groups.

Conclusions:

• Isoflurane sedation is feasible and beneficial for ARDS patients on CLRT.
• Isoflurane facilitates deeper sedation with less opioid requirement and improved respiratory mechanics.
• Further research may support isoflurane as a preferred agent in this patient population.