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Published on: March 12, 2016
Potentially inappropriate prescriptions of anticholinergic medications in patients with closed-angle glaucoma
Luis Fernando Valladales-Restrepo1,2, Jorge Enrique Machado-Alba3
1Grupo de Investigación en Farmacoepidemiología y Farmacovigilancia, Universidad Tecnológica de Pereira-Audifarma S.A, Calle 105 No. 14-140, Pereira, Risaralda, 660003, Colombia.
Purpose:
Glaucoma is the leading cause for blindness after cataracts worldwide. The aim was to identify anticholinergic drugs prescribed to patients diagnosed with closed-angle glaucoma in Colombia.
Methods:
This cross-sectional study identified the prescribing patterns of cholinergic antagonists related to the increased intraocular pressure in patients diagnosed with closed-angle glaucoma from a Colombian database. The Anticholinergic Drug Scale was used to quantify the anticholinergic burden.
Results:
We identified 1958 patients with closed-angle glaucoma, with a mean age of 70.5 ± 10.3 years, 72.9% of whom were women. Cholinergic antagonists were prescribed in at least 32.4% of cases. An age range between 75 and 84 years (odds ratio (OR) 2.35, 95% confidence interval (CI) 1.366-4.059) and being aged 85 years or older (OR 3.40, 95% CI 1.809-6.425) were associated with a greater probability of receiving an anticholinergic burden between 1 and 2 points. Females (OR 1.54, 95% CI 1.096-2.181) had a higher probability of receiving an anticholinergic burden ≥ 3 points. Interactions between antiglaucoma medications and anticholinergic treatments were identified in 32.1% of the patients.
Conclusions:
Most patients were prescribed multiple antiglaucoma medications, reflecting a large number of potentially inappropriate prescriptions, with anticholinergic drugs, related to the increased intraocular pressure.
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