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Meta-Analysis
. 2014 Jan 19;2014(1):CD009798.
doi: 10.1002/14651858.CD009798.pub2.

Dexmedetomidine for the management of awake fibreoptic intubation

Xing-Ying He  1 , Jian-Ping Cao, Qian He, Xue-Yin Shi
Affiliations
Meta-Analysis

Dexmedetomidine for the management of awake fibreoptic intubation

Xing-Ying He et al. Cochrane Database Syst Rev. .

Abstract

Background: Awake fibreoptic intubation (AFOI) frequently requires sedation, anxiolysis and relief of discomfort without impairing ventilation and depressing cardiovascular function. The goal is to allow the patient to be responsive and co-operative. Medications such as fentanyl, remifentanil, midazolam and propofol have been reported to assist AFOI; however,these agents are associated with cardiovascular or respiratory adverse effects. Dexmedetomidine has been proposed as an alternative to facilitate AFOI.

Objectives: The primary objective of this review is to evaluate and compare the efficacy and safety of dexmedetomidine in the management of patients with a difficult or unstable airway undergoing awake fibreoptic intubation (AFOI).

Search methods: We searched the Cochrane Central Register of Controlled Trials (CENTRAL; 2012, Issue 5), MEDLINE (1966 to May 2012) through Ovid, EMBASE (1980 to May 2012) and Web of Science (1945 to May 2012); we screened the reference lists of all eligible trials and reviews to look for further trials and contacted authors of trials to ask for additional information. We searched for ongoing trials at http://www.controlledtrials.com/ and http://clinicaltrials.gov/ . We reran our search of all databases listed above on 21 November 2013.

Selection criteria: We included published and unpublished randomized controlled trials, regardless of blinding or language of publication, in participants 18 years of age or older who were scheduled for an elective AFOI because of an anticipated difficult airway. Participants received dexmedetomidine or control medications.

Data collection and analysis: Three review authors independently extracted data on study design, participants, interventions and outcomes. We assessed risk of bias using The Cochrane Collaboration's tool. We estimated risk ratios (RRs) or mean differences (MDs) with 95% confidence internals (CIs) for outcomes with sufficient data; for other outcomes, we performed a qualitative analysis.

Main results: We identified four randomized controlled trials (RCTs), which included 211 participants. The four trials compared dexmedetomidine with midazolam, fentanyl, propofol or a sodium chloride placebo, respectively. The trials showed low or unclear risk of bias primarily because information provided on allocation concealment and other potential sources of bias was inadequate. Owing to clinical heterogeneity and potential methodological heterogeneity, it was impossible to conduct a full meta-analysis. We described findings from individual studies or presented them in tabular form. Limited evidence was available for assessment of the outcomes of interest for this review. Results of the limited included trials showed that dexmedetomidine significantly reduced participants' discomfort with no significant differences in airway obstruction, low oxygen levels or treatment-emergent cardiovascular adverse events noted during AFOI compared with control groups. When the search was rerun (from May 2012 to November 2013), it was noted that four studies are awaiting assessment. We will deal with these studies when we update the review.

Authors' conclusions: Small, limited trials provide weak evidence to support dexmedetomidine as an option for patients with an anticipated difficult airway who undergo AFOI. The findings of this review should be further corroborated by additional controlled investigations.

PubMed Disclaimer

Conflict of interest statement

None known.

Figures

1
1
Methodological quality graph: review authors' judgements about each methodological quality item presented as percentages across all included studies.
2
2
Methodological quality summary: review authors' judgements about each methodological quality item for each included study.
3
3
Study flow diagram.
See this image and copyright information in PMC

Update of

  • doi: 10.1002/14651858.CD009798

References

References to studies included in this review

Bergese 2010a {published data only}
    1. Bergese SD, Patrick Bender S, McSweeney TD, Fernandez S, Dzwonczyk R, Sage K. A comparative study of dexmedetomidine with midazolam and midazolam alone for sedation during elective awake fiberoptic intubation. Journal of Clinical Anesthsia 2010;22(1):35-40. [MEDLINE: ] - PubMed
Bergese 2010b {published data only}
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References to studies excluded from this review

Boyd 2011 {published data only}
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Cattano 2012 {published data only}
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He 2012
    1. He X, Shi X, He Q. Dexmedetomidine for the management of fibreoptic intubation. Cochrane Database of Systematic Reviews 2012, Issue 4. Art. No: CD009798. [DOI: 10.1002/14651858.CD009798] - DOI - PMC - PubMed

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