{"title":"Follow-up of Methanol-related Visual Defects in a Cohort Study: Initial Severity Predicts Long-term Outcome.","authors":"Farzad Gheshlaghi, Anselm Wong, Rezvan Firuzfar, Keyvan Jenab, Shayan Gheshlaghi, Golnoosh Shahverdi, Nastaran Eizadi-Mood","doi":"10.4103/jrpp.jrpp_80_22","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>Methanol poisoning can occur either intentionally through the consumption of methanol-containing products or accidentally through ingestion, resulting in visual impairment. We assessed the long-term visual sequelae in patients with methanol poisoning.</p><p><strong>Methods: </strong>This prospective cohort study was conducted at referral centers, Khorshid and Alzahra University Hospitals, affiliated with Isfahan University of Medical Sciences, Isfahan, Iran. The study included patients hospitalized for methanol poisoning from June 22, 2018, to June 21, 2020, with follow-up extended until June 2021. Toxico-clinical and ophthalmologic examination data were collected from patients upon hospital admission, discharge, and during follow-up.</p><p><strong>Findings: </strong>Thirty-nine patients were assessed in this study. The majority of them (94.9%) were male, with an average age of 34 years. Patients who presented with reduced visual acuity (VA) upon admission subsequently showed abnormalities (in acuity and visual fields) during follow-up (<i>n</i> = 13). Among the patients who displayed visual field defects on admission, bilateral optic disc atrophy was observed in follow-up (<i>n</i> = 13). Conversely, patients who reported blurred vision, with or without photophobia upon admission, had normal results in their follow-up eye examinations. Among the 36 patients who underwent dialysis, 14 (38.9%) exhibited visual impairment during follow-up examinations. Additionally, 38 patients received sodium bicarbonate, and 14 of them (36.85%) also presented ocular abnormalities.</p><p><strong>Conclusion: </strong>Patients who demonstrated VA deficits upon admission are more likely to experience long-term VA and visual field defects, as well as optic disc atrophy. Patients who solely complained of blurred vision, with or without photophobia, during admission were less likely to develop long-term visual defects.</p>","PeriodicalId":17158,"journal":{"name":"Journal of Research in Pharmacy Practice","volume":"12 3","pages":"88-95"},"PeriodicalIF":0.8000,"publicationDate":"2024-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11071062/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Research in Pharmacy Practice","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/jrpp.jrpp_80_22","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/7/1 0:00:00","PubModel":"eCollection","JCR":"Q4","JCRName":"PHARMACOLOGY & PHARMACY","Score":null,"Total":0}
引用次数: 0
Abstract
Objective: Methanol poisoning can occur either intentionally through the consumption of methanol-containing products or accidentally through ingestion, resulting in visual impairment. We assessed the long-term visual sequelae in patients with methanol poisoning.
Methods: This prospective cohort study was conducted at referral centers, Khorshid and Alzahra University Hospitals, affiliated with Isfahan University of Medical Sciences, Isfahan, Iran. The study included patients hospitalized for methanol poisoning from June 22, 2018, to June 21, 2020, with follow-up extended until June 2021. Toxico-clinical and ophthalmologic examination data were collected from patients upon hospital admission, discharge, and during follow-up.
Findings: Thirty-nine patients were assessed in this study. The majority of them (94.9%) were male, with an average age of 34 years. Patients who presented with reduced visual acuity (VA) upon admission subsequently showed abnormalities (in acuity and visual fields) during follow-up (n = 13). Among the patients who displayed visual field defects on admission, bilateral optic disc atrophy was observed in follow-up (n = 13). Conversely, patients who reported blurred vision, with or without photophobia upon admission, had normal results in their follow-up eye examinations. Among the 36 patients who underwent dialysis, 14 (38.9%) exhibited visual impairment during follow-up examinations. Additionally, 38 patients received sodium bicarbonate, and 14 of them (36.85%) also presented ocular abnormalities.
Conclusion: Patients who demonstrated VA deficits upon admission are more likely to experience long-term VA and visual field defects, as well as optic disc atrophy. Patients who solely complained of blurred vision, with or without photophobia, during admission were less likely to develop long-term visual defects.
期刊介绍:
The main focus of the journal will be on evidence-based drug-related medical researches (with clinical pharmacists’ intervention or documentation), particularly in the Eastern Mediterranean region. However, a wide range of closely related issues will be also covered. These will include clinical studies in the field of pharmaceutical care, reporting adverse drug reactions and human medical toxicology, pharmaco-epidemiology and toxico-epidemiology (poisoning epidemiology), social aspects of pharmacy practice, pharmacy education and economic evaluations of treatment protocols (e.g. cost-effectiveness studies). Local reports of medication utilization studies at hospital or pharmacy levels will only be considered for peer-review process only if they have a new and useful message for the international pharmacy practice professionals and readers.