Document Detail


The relationship between performance on the standardised field sobriety tests, driving performance and the level of Delta9-tetrahydrocannabinol (THC) in blood.
MedLine Citation:
PMID:  16226154     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The consumption of Delta9-tetrahydrocannabinol (THC) as cannabis has been shown to result in impaired and culpable driving. Testing drivers for the presence of THC in blood is problematic as THC and its metabolites may remain in the blood for several days following its consumption, even though the drug may no longer have an influence on driving performance. In the present study, the aim was to assess whether performance on the standardised field sobriety tests (SFSTs) provides a sensitive measure of impaired driving behaviour following the consumption of THC. In a repeated measures design, 40 participants consumed cigarettes that contained either 0% THC (placebo), 1.74% THC (low dose) or 2.93% THC (high dose). For each condition, after smoking a cigarette, participants performed the SFSTs on three occasions (5, 55 and 105 min after the smoking procedure had been completed) as well as a simulated driving test on two occasions (30 and 80 min after the smoking procedure had been completed). The results revealed that driving performance was not significantly impaired 30 min after the consumption of THC but was significantly impaired 80 min after the consumption of THC in both the low and high dose conditions. The percentage of participants whose driving performance was correctly classified as either impaired or not impaired based on the SFSTs ranged between 65.8 and 76.3%, across the two THC conditions. The results suggest that performance on the SFSTs provides a moderate predictor of driving impairment following the consumption of THC and as such, the SFSTs may provide an appropriate screening tool for authorities that wish to assess the driving capabilities of individuals suspected of being under the influence of a drug other than alcohol.
Authors:
K Papafotiou; J D Carter; C Stough
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Publication Detail:
Type:  Journal Article     Date:  2005-01-11
Journal Detail:
Title:  Forensic science international     Volume:  155     ISSN:  0379-0738     ISO Abbreviation:  Forensic Sci. Int.     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2005-10-17     Completed Date:  2006-03-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7902034     Medline TA:  Forensic Sci Int     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  172-8     Citation Subset:  IM    
Affiliation:
Swinburne Centre for Neuropsychology, Swinburne University of Technology, PO Box 218, Hawthorn, Vic. 3122, Australia. kpapafotiou@swin.edu.au
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MeSH Terms
Descriptor/Qualifier:
Adult
Automobile Driver Examination*
Automobile Driving
Computer Simulation
Female
Forensic Medicine
Gas Chromatography-Mass Spectrometry
Humans
Male
Marijuana Abuse / blood*,  diagnosis
Psychotropic Drugs / administration & dosage,  blood*
Substance Abuse Detection / methods*
Tetrahydrocannabinol / administration & dosage,  blood*
Time Factors
Chemical
Reg. No./Substance:
0/Psychotropic Drugs; 1972-08-3/Tetrahydrocannabinol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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