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An Assessment of Cancer Pain Control in an LMIC Oncology Clinic

Background: Cancer has become a leading cause of morbidity and mortality in adults globally. Pain is universally one of the most commonly encountered symptoms by health and supportive care providers involved in care of cancer patients. Inadequate pain control negatively impacts the patient´s quality of life, and may slow down the healing process. Health care providers often ignore pain control as a target of treatment as they focus on reducing the tumor burden. Pain management should be considered an important target and end point in the treatment of cancer patients. Aim: To assess the prevalence of pain, oncologists´ prescribing patterns; and efficacy of pain control in the Radiotherapy Department of the Lagos University Teaching Hospital. Methods: Adult cancer outpatients were assessed using a Universal Pain Assessment Tool and followed up for 2-6 weeks thereafter. Pain scores were assessed at first interview and at the follow-up appointment within 2 weeks minimum and 6 weeks maximum. Results: 347 adult clinic attendees were recruited, assessed, and followed up with interviewer-administered questionnaires over a close-out period of 6 weeks. There was an 85% (298 respondents) prevalence of pain in the study group; with over half of respondents characterizing their pain in the moderate to severe ranges. [Figure: see text] 9 out of 10 respondents stated the cancer was the primary source of their pain. Other sources of pain were medical tests; and treatment-related such as chemotherapy and radiation therapy. 86 patients (29% of study group) were not asked about pain by their attending physician, and all respondents stated their physician had not used any pain assessment tool to determine the nature or severity of their pain. [Figure: see text] Oral nonsteroidal analgesics were the most frequently prescribed form of pain control (237 patients), with radiotherapy coming in second (69 patients). The only available strong opioid analgesics at the oncology pharmacy were oral morphine and parenteral pentazocine. Oxycodone, fentanyl pethidine, and hydromorphone were unavailable. Interventional (e.g., cordotomy) and alternative (e.g., massage) forms of pain control were not prescribed in any patients. 43 respondents (15%) despite being in pain, did not receive any form of treatment or recommendation for pain control. At follow-up appointment 2-6 weeks after; 4 out of 10 respondents had not obtained pain relief from instituted measures. [Figure: see text] Conclusion: Undertreatment of cancer pain remains a major concern. The treatment process must begin with a proper and thorough evaluation of the patient's pain; a clear pain control goal and end point target; and regular reevaluation with application of guidelines when adequate control is not achieved. Inclusion of pain assessment and management guidelines in medical training would be of benefit to reduce the prevalence of inadequately controlled pain in patients living with cancer; ultimately improving their quality of life.