Isoflurane has shown better sedation control and potential benefits in patients with ARDS compared to propofol or midazolam, but the practical use during continuous lateral rotational therapy remains unknown. We therefore compared isoflurane with propofol and midazolam regarding sedation depth (per the Richmond Agitation-Sedation Scale), opioid consumption, lung function, and hemodynamics in patients treated with continuous lateral rotational therapy.
METHODS:
38 consecutive critically ill surgical subjects were retrospectively studied using a hospital database. All subjects suffered from ARDS and were treated with continuous lateral rotational therapy between May 2010 and September 2013. Nineteen subjects were sedated with propofol or midazolam and compared with 19 subjects sedated with isoflurane using the AnaConDa-system.
RESULTS:
Isoflurane sedation resulted in significantly lower Richmond Agitation-Sedation Scale scores compared with propofol or midazolam. Despite deep isoflurane sedation, opioid consumption could be significantly reduced. Spontaneous breathing was possible in 90% of the subjects on isoflurane sedation compared with 16% of the subjects sedated with propofol or midazolam. The difference between peak inspiratory pressure and PEEP was significantly decreased after 24 h of isoflurane sedation. Oxygenation (PaO2/FIO2) improved in both groups. Hemodynamics and need for vasopressor therapy were comparable between groups.
CONCLUSIONS:
This study supports the feasibility of isoflurane sedation using continuous lateral rotational therapy.
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