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Risk factors of opioid-induced adverse reactions in elderly male outpatients of Korea Veterans Hospital

Title
Risk factors of opioid-induced adverse reactions in elderly male outpatients of Korea Veterans Hospital
Authors
Kim, Ji YoungKim, Joo HeeYee, JeongSong, Soo JinGwak, Hye Sun
Ewha Authors
곽혜선김주희
SCOPUS Author ID
곽혜선scopus; 김주희scopus
Issue Date
2018
Journal Title
BMC GERIATRICS
ISSN
1471-2318JCR Link
Citation
BMC GERIATRICS vol. 18
Keywords
OpioidAdverse drug reactionsMale elderly patients
Publisher
BMC
Indexed
SCIE; SSCI; SCOPUS WOS
Document Type
Article
Abstract
Background: Risk factors associated with opioid-induced adverse reactions (OIARs) in the elderly population have not been well defined. The objective of this study was to determine effects of various risk factors on incidence of OIARs in male elderly patients. Methods: A retrospective cohort study in Korea Veterans Hospital was performed. Data were analyzed in male patients aged 65years and older who received morphine, oxycodone, or codeine. Binomial variables describing patient-related and drug-related characteristics were constructed. Associations between these variables and frequency of OIARs were determined. Odds ratio (OR) and adjusted odds ratio (AOR) were calculated from univariate and multivariable analyses, respectively. Attributable risk was obtained by (1-1/OR)*100%. Results: Of 316 patients, 28% experienced at least one adverse event. The most common adverse events were gastrointestinal problems (n=59) and central nerve system adverse effects (n=20). The odds of OIARs in patients with opioid use >= 12 weeks was increased by 80% compared to those with opioid use <12weeks. Attributable risk of GABA analogues was 64 similar to 78% in constructed Models. Compared to codeine users, patients using morphine and oxycodone had 653 and 473% increased odds for OIARs, respectively. MME >= 60mg/day had a 317% increased odds for OIARs (95% CI: 1.92-9.04) compared to MME < 60mg/day. Opioid combination therapy had a 139% increased odds for OIARs compared to monotherapy. Conclusions: These findings have significant implications for clinical use of opioid in elderly patients. Our study suggests that low dose short-term use will pose less risk of OIARs for the elderly, whereas concomitant use of GABA analogues, strong opioids and dual-opioid therapy may increase the risk of OIARs. Therefore, clinician should carefully monitor patients when starting opioid therapy in older population.
DOI
10.1186/s12877-018-0990-1
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약학대학 > 약학과 > Journal papers
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