Analysis of opioid and adjunctive pain medication prescriptions in lung cancer patients.

Abstract

e24073 Background: Between 1999-2018, the CDC reported 232,000 deaths from prescription opioids. Lung cancer patients receive many opioid and adjunctive pain medication prescriptions. The frequency, duration, and impact of these prescriptions is unknown. Methods: We used the electronic medical record to catalogue opioid and adjunctive pain medication prescriptions given to adult cancer patients at our academic and county-affiliated health systems from 2009-2016. We identified the association of opioid and adjunctive pain medication use with patient characteristics including cancer stage and radiation therapy. Results: 1510 lung cancer patients were identified, of which 1061 had opioid prescriptions (70%). Of patients with prescriptions: hydrocodone was prescribed to 90%, morphine 35%, hydromorphone 17%, fentanyl 16%, and oxycodone 13%. 330/1061 patients had adjunctive medication prescriptions, of which, gabapentin was prescribed to 90%, pregabalin 14% and carbamazepine 2%. 296/330 patients prescribed adjunctive medications also had an opioid prescription with the following frequency: hydrocodone 90%, hydromorphone 33%, fentanyl 27%, morphine 41%, and oxycodone 23% 7/1061 patients with opioids had naloxone prescribed. Opioid usage by cancer stage is shown in the table. 211/1510 patients (13%) had prescriptions for ≥3 different opioids; 97/330 (33%) patients with adjunctive prescriptions, had prescriptions for ≥3 different opioids. Of patients treated with radiation for >4 weeks, 66% received opioids, with the proportion receiving opioids increasing with each fraction of radiation up to a rate of 90% with 5 or more fractions. 87% of patients prescribed opioids alone had an active opioid prescription 3 months after their last date of radiation as did 91% of those prescribed adjunctive medications in addition to opioids. In the total dataset: 55% of patients were from the university system and 45% were from the county system and other settings. Of the lung cancer patients with opioid prescriptions: 69% were from the university system and 31% were from other settings. Conclusions: Opioids are commonly prescribed in patients with any stage of lung cancer, particularly those with stage >1 with hydrocodone being the most prescribed. In the period under study, adjunctive medications such as gabapentin were prescribed much less than and rarely without opioids. Some lung cancer patients received ≥3 distinct opioids, with higher rates seen in those with adjunctive medicine prescriptions. Further studies to evaluate system wide opioid prescribing trends and discrepancies related to demographic factors are needed.[Table: see text]