RESUMO
OBJECTIVE: In 2019, a regional survey of potentially inappropriate prescriptions (PIP) of psychotropic drugs in elderly psychiatric inpatients was carried out highlighting their inappropriate use in this population. The aim of this study was to assess the clinical relevance - defined as the provision of an appropriate and necessary treatment, chosen from other alternatives as being the most likely to produce the expected results for a given patient - of these prescriptions considered inappropriate according to current established criteria. MATERIAL AND METHOD: Patients aged over 75, or 64 to 75 and polypathological with at least one PIP of psychotropic drugs or drugs with a high anticholinergic burden, identified by an audit grid established on the basis of STOPP/STARTv2 criteria and the Laroche list on the prescription at 48h of hospitalization, were included. The weighing of the inappropriateness nature of the prescription (resistance to treatment, period of crisis, comorbidities ) was established by a pharmacist-psychiatrist pair on the entire computerized record of the current episode. The clinical relevance of the PIP and the overall prescription was rated as 0 (irrelevant), 1 (partially relevant) or 2 (relevant). RESULTS: Thirty-four patients were included. One hundred and twenty-five PIP of psychotropic drugs were noted: 50.4% concerned benzodiazepines and non-benzodiazepines anxiolytics (BZD/Z), 25.6% neuroleptics (NL), 12% antidepressants (ATD) and 12% drugs with a high anticholinergic burden. On one hand, 49.2% of PIP of BZD/Z, 50% of PIP of NL and 20% of PIP of ATD were considered irrelevant. On the other hand, 49.2% of PIP of BZD/Z, 31.3% of PIP of NL and 13.3% of PIP of ATD were considered partially relevant. Furthermore, 1.6% of PIP of BZD/Z, 18.8% of PIP of NL and 66.7% of PIP of ATD were considered relevant. For PIPs of drugs with a high anticholinergic burden, 80% were deemed irrelevant, 13.3% partially relevant and 6.7% relevant. In all, of the 34 drug prescriptions studied, three (8.8%) were considered irrelevant, 11 (32.4%) partially relevant and 20 (58.8%) clinically relevant. CONCLUSION: This study highlighted the clinical relevance of more than half the prescriptions considered inappropriate according to current PPI criteria in the elderly. It underlines the interest of a new PPI detection tool for elderly patients with psychiatric disorders.
RESUMO
Adverse drug reactions (ADRs) are a major public health issue, especially when it comes to the elderly. Potentially inappropriate prescribing (PIP) are one of the causes of ADRs in older people. A PIP can be defined as a prescription for which the benefit/risk ratio is unfavourable compared to other therapeutic alternatives. Psychotropic drugs are the second highest risk class for ADRs in the elderly. In order to reduce the prevalence of PIP, prescription assistance tools have been created. An inventory of PIP of psychotropic drugs in older patients hospitalized in psychiatry units was carried out in a French regional setting in 2019. A criteria grid was established based on 2 tools: STOPP/START criteria and Laroche's list adapted to French practice. This grid targeted each class of psychotropic drugs, drugs with a high anticholinergic burden and non-recommended combinations of psychotropic drugs. Three hundred forty-seven patients were included. A high prevalence of PPI was found for each class of psychotropic drugs. The highest prevalence of PPI was found among benzodiazepines (90.3%): long-term prescription, long half-life drugs, respiratory insufficiency or cognitive impairment condition. 56.5% of the subjects had a not-recommended combination of psychotropic drugs (prescription of drugs of the same pharmacotherapeutic class), 26% had a PIP of antipsychotics: prescription for insomnia, use of phenothiazine, 11.8% of drugs with anticholinergic properties and 7.4% of antidepressants: especially prescription of tricyclic drugs. These results obtained on a large population underline the interest of considering the specificities of prescriptions in the elderly. It shows both the interest and the limits of the current criteria defining the PIP in the context of a hospitalization in psychiatry for an acute disorder in elderly subjects.
