Kate M Morizio1, Regan A Baum2, Adam Dugan3, Julia E Martin3, Abby M Bailey2. 1. Department of Pharmacy, Banner University Medical Center at the University of Arizona, Tucson, Arizona. 2. Department of Pharmacy, University of Kentucky HealthCare, Lexington, Kentucky. 3. Department of Emergency Medicine, University of Kentucky HealthCare, Lexington, Kentucky.
Abstract
STUDY OBJECTIVES: To characterize the differences between patients who had heroin and nonheroin opioid overdoses and to determine whether there were any significant differences in their management with regard to the naloxone use. DESIGN: Retrospective cohort study. SETTING: Large academic medical center. PATIENTS: A total of 923 patients admitted to the medical center who were identified for overdose by heroin or other opiate-related narcotics between January 2010 and September 2015; 480 patients experienced a nonheroin opioid overdose event, and 443 patients experienced a heroin overdose event. MEASUREMENTS AND MAIN RESULTS: Patients presenting with heroin overdose tended to be younger and male, with higher rates of hepatitis C virus (HCV) infection compared with those presenting with nonheroin opioid overdose (p<0.05). Patients in the heroin group were also more likely to have a previous overdose event, history of injection drug use, and history of prescription opioid abuse compared with the nonheroin group (p<0.05). Those presenting with heroin overdose were more likely to receive naloxone in the prehospital setting (p<0.05) but were less likely to receive naloxone once admitted (p<0.05). Patients with nonheroin opioid overdoses required more continuous infusions of naloxone (p<0.05) and admission to the intensive care unit (p<0.05). Of all 923 patients, 178 (19.3%) had a repeat admission for any reason, and 70 (7.6%) were readmitted over the course of the study period for another overdose event with the same drug. The proportion of patients presenting with a heroin overdose steadily increased from 2010-2015; the number of patients presenting to the emergency department with nonheroin opioid overdoses steadily decreased. As rates of heroin overdose increased each year, the incidence of HCV infection increased dramatically. CONCLUSION: This study indicates that the incidence of heroin overdoses has significantly increased over the last several years, and the rates of HCV infection 4-fold since the start of the study period. Patients admitted for nonheroin opioid overdose were more likely to be admitted to the hospital and intensive care unit compared with those admitted for heroin overdose. The rise in overdose events only further illustrates a gap in our understanding of the cycle of addiction, drug abuse, and overdose events.
STUDY OBJECTIVES: To characterize the differences between patients who had heroin and nonheroin opioid overdoses and to determine whether there were any significant differences in their management with regard to the naloxone use. DESIGN: Retrospective cohort study. SETTING: Large academic medical center. PATIENTS: A total of 923 patients admitted to the medical center who were identified for overdose by heroin or other opiate-related narcotics between January 2010 and September 2015; 480 patients experienced a nonheroin opioid overdose event, and 443 patients experienced a heroinoverdose event. MEASUREMENTS AND MAIN RESULTS:Patients presenting with heroinoverdose tended to be younger and male, with higher rates of hepatitis C virus (HCV) infection compared with those presenting with nonheroin opioid overdose (p<0.05). Patients in the heroin group were also more likely to have a previous overdose event, history of injection drug use, and history of prescription opioid abuse compared with the nonheroin group (p<0.05). Those presenting with heroinoverdose were more likely to receive naloxone in the prehospital setting (p<0.05) but were less likely to receive naloxone once admitted (p<0.05). Patients with nonheroin opioid overdoses required more continuous infusions of naloxone (p<0.05) and admission to the intensive care unit (p<0.05). Of all 923 patients, 178 (19.3%) had a repeat admission for any reason, and 70 (7.6%) were readmitted over the course of the study period for another overdose event with the same drug. The proportion of patients presenting with a heroinoverdose steadily increased from 2010-2015; the number of patients presenting to the emergency department with nonheroin opioid overdoses steadily decreased. As rates of heroinoverdose increased each year, the incidence of HCV infection increased dramatically. CONCLUSION: This study indicates that the incidence of heroinoverdoses has significantly increased over the last several years, and the rates of HCV infection 4-fold since the start of the study period. Patients admitted for nonheroin opioid overdose were more likely to be admitted to the hospital and intensive care unit compared with those admitted for heroinoverdose. The rise in overdose events only further illustrates a gap in our understanding of the cycle of addiction, drug abuse, and overdose events.
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