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Journal of Dental Research
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Clinical

Oral Clonidine Pre-treatment and Diazepam/Meperidine Sedation

D.L. Hall1,2,*, D.N. Tatakis2, J.D. Walters2 and E. Rezvan2,3

1 Section of Primary Care,
2 Section of Periodontology, The Ohio State University College of Dentistry, 305 W. 12th Avenue, Columbus, OH 43218-2357, USA; and
3 Private Practice, Gilroy, CA, USA

Correspondence: * corresponding author, hall.611{at}osu.edu

Clonidine has recently been used as a pre-operative medication and sedative/anxiolytic drug. Its extended duration of action makes it suitable for longer procedures. In this randomized, crossover, placebo-controlled clinical trial, we characterized the effects of oral clonidine pre-treatment on intravenous diazepam/meperidine sedation using the bi-spectral index (BIS) in 13 participants. Clonidine significantly increased the numbers of BIS-depressed readings and percent memory loss during sedation, while reducing total diazepam and post-operative analgesic dosages by 44% and 55%, respectively. Systolic, diastolic, and mean arterial blood pressures, as well as pulse rates, were reduced. Respiratory rate, oxygen saturation, end-tidal CO2, and recovery from sedation were unchanged. Participants, surgeons, and sedationists preferred clonidine over the placebo. Clonidine pre-treatment increased and prolonged sedation and amnesia and stabilized vital signs while significantly decreasing diazepam and post-operative analgesic usage. These results suggest that pre-operative clonidine administration could be a useful supplement to intravenous sedation for dental procedures of long duration.

Key Words: clonidine • BIS • diazepam • meperidine • IV sedation

Journal of Dental Research, Vol. 85, No. 9, 854-858 (2006)
DOI: 10.1177/154405910608500915
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