een found in the brains <strong>of</strong> drivers who crash'" but subsequent assessment <strong>of</strong> the families did notreveal significant premorbid deterioration in the subjects' general function"'. The most carefullycontrolled study <strong>of</strong> crashes <strong>and</strong> dementia showed no increase in crash rates for drivers withdementia". Likely causes for this counter-intuitive finding include a lower annual mileage <strong>and</strong>restriction <strong>of</strong> driving by the patient, family <strong>and</strong> physiciansThe effect <strong>of</strong> drugs on driving has also assumed greater importance'". This is a complex area, withmany difficult methodological considerations, not least <strong>of</strong> which is the question <strong>of</strong> whether it is thedisease or the medication that impairs the driver. From the existing literature, several key pointsemerge when considering the prescription <strong>of</strong> psychoactive medications. Does the patient really needthe medication? If benzodiazepines are required, long-acting agents should be avoided"; ifunavoidable, they would tip the scales towards driving cessation during the course <strong>of</strong> theprescription. The choice <strong>of</strong> an antidepressant in an older driver should be directed away fromtricyclic". Neuroleptic medication (<strong>and</strong> the underlying illness) would be a negative influence ondriving ability. Physicians need to be Vigilant about over- the -counter medications (particularly thosecontaining antihistamines) <strong>and</strong> newer drugs with uncommon but important side effects which mayaffect driving, such as changes in neurological status due to cipr<strong>of</strong>loxacin"._f------------------------The schedule for the assessment <strong>of</strong> the older driver is akin to that <strong>of</strong> geriatric assessment <strong>of</strong> olderpeople, a process which is marked by the following qualities: medical <strong>and</strong> functional assessment,detection <strong>and</strong> prioritisation <strong>of</strong> diseases, interdisciplinary assessment <strong>and</strong> remediation (Table 3).Functional assessments, such as a comprehensive test <strong>of</strong> visual processing, a falls history <strong>and</strong> areview <strong>of</strong> current medications may be <strong>of</strong> greater relevance than specific medical conditions in theidentification <strong>of</strong> older at-risk drivers", Early specialist referral may prove beneficial for the primarycare physician who does not have access to an interdisciplinary team.73 O'Neill,D. 'Physicians, elderly drivers, <strong>and</strong> dementia'. Lancet 1992;339 (8784):41-374 O'NeiJl, D., editor. 'Follow-up <strong>of</strong> Alzheimer's disease <strong>and</strong> apolipoprotein E E4 allele in older drivers who died in automobileaccidents'. The <strong>Older</strong> Driver, <strong>Health</strong> <strong>and</strong> Mobility; 1999; Dublin. ARHC Press.75 Trobe, l.D., Wailer, P.F., Cook-Flannagan, CA., Teshima, S.M., Bieliauskas, L.A.. 'Crashes <strong>and</strong> violations among drivers withAlzheimer disease'. Arch Neuro/1996;53 (5):411-6.76 O'NeiJl, D. 'Benzodiazepines <strong>and</strong> driver safety' Lancet 1998;352 (9137):1324-5.77 Hemmelgarn, B., Suissa, 5., Huang, A., Boivin, l.F., Pinard, G. 'Benzodiazepine use <strong>and</strong> the risk <strong>of</strong> motor vehicle crash in theelderly' Jama 1997; 278 (1):27-31.78 Ray, W.A., Thapa, P.B., Shorr, R.I. 'Medications <strong>and</strong> the oider driver'. Clin Geriatr Med 1993;9 (2):413-3879 Gray, K.J., Alien, K.D., Ridgway, E.J. 'Impairment <strong>of</strong> driving by cipr<strong>of</strong>ioxacin'. Br Med J 1994; 309: 542.80 Sims, R.V., Owsley, C, Allman,R.M., Ball, K., Smoot, T.M. 'A preliminary assessment <strong>of</strong> the medical <strong>and</strong> functional factorsassociated with vehicle crashes by older. JAm Geriatr Soc 1998; 46 (5):556-61.Conference Proceedings
Table 3: Process <strong>of</strong> clinical driving assessment1. History:• patient, family/informant• driving history• medications2. Examination:• functional status• vision• mental status testing3. Diagnostic formulation <strong>and</strong> prioritisation.4. Remediation.5. In-depth cognitive/perceptual testing.6. On-road assessment.7. Overall evaluation <strong>of</strong> hazard:• strategic• tactical• operational8. Advice to patient/carer:• driving• insurance• licencing authority10. If driving too hazardous, consider alternative mobility strategies.A cascade system for interdisciplinary assessment is probably the most cost-effective way toapproach the patient (Table 4). For example, if the physician detects visual acuity below thest<strong>and</strong>ard for the jurisqiction, referral to an ophthalmologist <strong>and</strong> maximal remediation <strong>of</strong> vision shouldoccur before returning to the assessment cascade. Similarly, should a patient in the European Unionhave a homonymous hemianopia (one <strong>of</strong> the few absolute medical contra-indications to driving), thenreferral to the social worker for developing strategies for alternative transportation is the next step inthe cascade.<strong>Assessment</strong> <strong>of</strong> <strong>Older</strong> <strong>People's</strong> <strong>Health</strong> <strong>and</strong> <strong>Social</strong> <strong>Care</strong> <strong>Needs</strong> <strong>and</strong> Preferences