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Published on: September 30, 2020
Systematic review on the use of anticholinergic scales in elderly chronic patients
Rocío Díaz-Acedo1, Ángela María Villalba-Moreno1, Bernardo Santos-Ramos1
1Unidad de Gestión Clínica de Farmacia, Hospital Universitario Virgen del Rocío, Avenida Manuel Siurot S/N, CP 41013, Sevilla, Spain.
Background:
The rising prevalence of chronic conditions and polypharmacy in the elderly increases the risk of anticholinergic burden, the cumulative effect of multiple anticholinergic drugs. However, no standard exists for assessing anticholinergic burden in these patients, resulting in various anticholinergic scales with differing methodologies and outcomes.
Objectives:
To identify existing anticholinergic scales that are applicable to elderly chronic patients and to compare their main characteristics, included drugs and anticholinergic potential scores. In addition, we aim to analyse the previous validation of these scales.
Methods:
We conducted a systematic review (MEDLINE, EMBASE and Web of Science; PROSPERO ID CRD42024505226; October 2023) for studies on anticholinergic scales applicable to elderly patients with chronic conditions. We also examined the validation of these tools in predicting anticholinergic-related adverse outcomes. Inclusion criteria targeted studies on anticholinergic scales for patients aged ≥65 with chronic conditions, excluding those hospitalized or with specific diseases. Quality assessments utilized JBI tools and SQUIRE 2.0 standards.
Results:
From 1399 references, 18 anticholinergic scales development studies were included. Different scales varied in creation methodology, with some based on literature, review of previous scales or experimental data. The included studies are heterogeneous in terms of design and results of their quality analysis. For the second objective, 29 validation studies were considered, with mixed associations found between anticholinergic scales and health outcomes.
Conclusions:
Current anticholinergic scales and validation studies are diverse and show mixed and controversial results, with evidence often coming from retrospective or low-quality studies; indicating the necessity for future research to focus on developing a clinically applicable tool for accurately assessing anticholinergic burden in the elderly with chronic conditions.
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