International Journal of Advance Research Publication and Reviews

International Journal of Advance Research Publication and Reviews
Peer-Reviewed | Multi-Disciplinary Journal

ISSN: 3049-0103 (O)

Impact Factor: 4.33

Patterns and Determinants of Opioid Analgesic Utilization: A Narrative Review

Author

Preetham Gowda Chujjalakyathanahalli Manjunath, Amulya Swamy Gowda, Kushi Sanjay, Shama Ramesh, Sheba Baby John, Bettaswamy Huraliganaganahalli Vykuntappa, Hanumantachar Joshi K

Abstract

Background: Opioid analgesics remain important medicines for the management of moderate-to-severe acute pain, perioperative pain, cancer-related pain, palliative-care needs, and selected chronic pain conditions. However, variation in prescribing, prolonged exposure, potentially inappropriate utilization, and unequal access to analgesic treatment have generated continuing concerns regarding medication safety and quality of pain management. Drug utilization research provides a framework for examining patterns of medicine use, identifying determinants of prescribing, and evaluating the appropriateness and consequences of opioid exposure.

Objective: This narrative review synthesizes evidence concerning patterns and determinants of opioid analgesic utilization across outpatient, emergency, inpatient, postoperative, chronic non-cancer pain, cancer and palliative-care settings. It further examines approaches used to quantify opioid utilization, patient-, prescriber- and system-level determinants, potentially inappropriate utilization, opioid stewardship interventions, the role of clinical pharmacists, and important gaps in current research.

Methods: A narrative literature synthesis was undertaken using peer-reviewed literature indexed in PubMed and literature relevant to drug utilization research, opioid prescribing, opioid consumption, prescribing determinants, hospital utilization and opioid stewardship. Observational studies, systematic reviews, meta-analyses and intervention studies were considered across different populations and healthcare settings. The World Health Organization Anatomical Therapeutic Chemical/Defined Daily Dose methodology was considered as a standardized framework for medicine-utilization measurement.

Results: Opioid utilization varies substantially between countries, regions, populations, clinical indications and healthcare settings. High-income countries have historically demonstrated greater opioid consumption than many low- and middle-income countries, although low consumption may represent either appropriate lower exposure or inadequate access to analgesic medicines. Within healthcare systems, substantial variation has been observed between hospitals, departments and individual prescribers. Patient characteristics, pain diagnosis, previous opioid exposure, comorbidities, socioeconomic factors and geography may influence utilization. Prescriber characteristics, institutional culture, guidelines, workload and electronic prescribing systems are additional determinants. Postoperative and hospital-discharge prescribing represent important points of potential excess exposure because prescribed quantities may exceed actual patient requirements. Common measures of utilization include prescription prevalence, days of supply, Defined Daily Dose, prescribed daily dose and morphine milligram equivalents, each with specific methodological limitations.

Conclusion: Opioid analgesic utilization is determined by a complex interaction of clinical, patient-related, prescriber, institutional, socioeconomic and regulatory factors. Drug utilization research can identify variations in prescribing, potentially inappropriate utilization and possible unmet analgesic needs. Future research should integrate standardized utilization measures with clinical indication, pain outcomes, patient-reported outcomes and safety indicators. Multidisciplinary opioid stewardship, including clinical pharmacist involvement, may improve the balance between adequate pain management and minimization of avoidable opioid-related harm.

Conclusion: Opioid analgesic utilization is determined by a complex interaction of clinical, patient-related, prescriber, institutional, socioeconomic and regulatory factors. Drug utilization research can identify variations in prescribing, potentially inappropriate utilization and possible unmet analgesic needs. Future research should integrate standardized utilization measures with clinical indication, pain outcomes, patient-reported outcomes and safety indicators. Multidisciplinary opioid stewardship, including clinical pharmacist involvement, may improve the balance between adequate pain management and minimization of avoidable opioid-related harm.

Keywords

opioid analgesics; drug utilization research; prescribing pattern; analgesic utilization; pharmacoepidemiology; morphine milligram equivalents; Defined Daily Dose; opioid stewardship; pain management; prescribing determinants.

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