Objective: Dexmedetomidine and propofol are commonly used sedatives in neurocritical care as they allow for frequent neurologic examinations. However, both agents are associated with significant hemodynamic side effects. The primary objective of this study is to compare the prevalence of severe hemodynamic effects in neurocritical care patients receiving dexmedetomidine and propofol.
Design: Multicenter, retrospective, propensity-matched cohort study.
Setting: Neurocritical care units at two academic medical centers with dedicated neurocritical care teams and board-certified neurointensivists.
Patients: Neurocritical care patients admitted between July 2009 and September 2012 were evaluated and then matched 1:1 based on propensity scoring of baseline characteristics.
Interventions: Continuous sedation with dexmedetomidine or propofol.
Measurements and Main Results: A total of 342 patients (105 dexmedetomidine and 237 propofol) were included in the analysis, with 190 matched (95 in each group) by propensity score. The primary outcome of this study was a composite of severe hypotension (mean arterial pressure < 60 mm Hg) and bradycardia (heart rate < 50 beats/min) during sedative infusion. No difference in the primary composite outcome in both the unmatched (30% vs 30%, p = 0.94) or matched cohorts (28% vs 34%, p = 0.35) could be found. When analyzed separately, no differences could be found in the prevalence of severe hypotension or bradycardia in either the unmatched or matched cohorts.
Conclusions: Severe hypotension and bradycardia occur at similar prevalence in neurocritical care patients who receive dexmedetomidine or propofol. Providers should similarly consider the likelihood of hypotension or bradycardia before starting either sedative.
1Department of Pharmacy, University of Florida Health, Jacksonville, FL.
2Department of Pharmacy, The Ohio State University Wexner Medical Center, Columbus, OH.
3The Ohio State University, College of Pharmacy, Columbus, OH.
4The Ohio State University Center for Biostatistics, Columbus, OH.
5University of Tennessee, College of Medicine, Memphis, TN.
6Semmes-Murphey Neurologic and Spine Institute, Memphis, TN.
7Department of Pharmacy, Methodist Healthcare–University Hospital, Memphis, TN.
8University of Tennessee, College of Pharmacy, Memphis, TN.
At the time of writing, Dr. Erdman was PGY2 Pharmacy Resident—Critical Care, Methodist Healthcare–University Hospital/University of Tennessee Health Sciences Center.
This study was performed at Methodist Healthcare–University Hospital, Memphis, TN; and The Ohio State University Wexner Medical Center, Columbus, OH.
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Mr. Phillips’ institution received grant support from a National Institutes of Health grant and the Murdoch Children’s Research Institution. The remaining authors have disclosed that they do not have any potential conflicts of interest.
Address requests for reprints to: G. Morgan Jones, PharmD, BCPS, Methodist Healthcare–University Hospital, 1265 Union Avenue, Memphis, TN 38104. E-mail: firstname.lastname@example.org