Defining inappropriate practices in prescribing for elderly people



Table 2: Inappropriate practices in prescribing psychotropic drugs for elderly people
PracticeMean clinical significance rating Risk to patientAlternative therapy % of panel members who agreed with alternative
Long-term prescription of long-half-life benzodiazepine to treat insomnia 3.72May cause falls, fractures, confusion, dependence and withdrawal Nondrug therapy or short-half-life benzodiazepine 97
Prescription of tricyclic antidepressant to treat depression for patients with a history of glaucoma, BPH* or heart block 3.63May aggravate glaucoma, cause urinary retention in patients with BPH or worsen heart block SSRI94
Long-term prescription of barbiturate to treat insomnia 3.59May cause falls, fractures, confusion, dependence and withdrawal Nondrug therapy or low dosage of short-half-life benzodiazepine 94
Prescription of SSRI† for patients already receiving an MAO‡ inhibitor to treat depression 3.56May extend adverse effects of SSRI Avoid combining; ensure a wash-out period of at least 7 days if switching from an MAO inhibitor to an SSRI 81
Long-term prescription of long-half-life benzodiazepine to treat anxiety 3.55May cause falls, fractures, confusion, dependence and withdrawal Nondrug therapy or short-half-life benzodiazepine 88
Long-term prescription of long-half-life benzodiazepine to treat agitation in dementia 3.52May cause falls, fractures, confusion, dependence and withdrawal Loxapine or haloperidol
Short-half-life benzodiazepine
88
56
Prescription of tricyclic antidepressant to treat depression for patients with a history of postural hypotension 3.26May worsen postural hypotension and cause falls SSRI, with monitoring of blood pressure 94
Long-term prescription of triazolam to treat insomnia 3.23May cause cognitive and behavioural abnormalities Nondrug therapy or low dosage of short-half-life benzodiazepine 91
Prescription of chlorpromazine to treat psychosis for patients with a history of postural hypotension 3.22May worsen postural hypotension and cause falls High-potency neuroleptic such as haloperidol, with blood-pressure monitoring 94
Prescription of nylidrin, niacin or pentoxifylline to treat dementia 3.16Ineffective treatment for dementia and moderate risk of side effects Discontinue81
Prescription of tricyclic antidepressant with active metabolites (e.g., imipramine or amitriptyline) to treat depression 3.12May cause anticholinergic side effects Tricyclic antidepressant without active metabolites or SSRI 91
Prescription of methylphenidate to treat depression 3.11May cause agitation, stimulation of central nervous system and seizures SSRI or short-half-life tricyclic antidepressant without active metabolites 81
*BPH = benign prostatic hyperplasia.
SSRI = selective serotonin reuptake inhibitor.
MAO = monamine oxidase.

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| CMAJ February 1, 1997 (vol 156, no 3) / JAMC le 1er février 1997 (vol 156, no 3) |