Patients' Perspectives on Alternative Antibiotic Treatment Strategies for Infective Endocarditis among Persons Who Inject Drugs

Abstract

Objectives: Injection drug use is a leading and growing risk factor for infective endocarditis (IE), as evidenced by a marked national increase in hospitalizations for drug use-associated infective endocarditis (DUA-IE). The typical treatment approach for persons with DUA-IE is a 6-week inpatient course of intravenous antimicrobials. This approach is resource-intensive, requiring substantial hospital resources and lengthy stays. Alternative methods of antibiotic delivery for DUA-IE treatment have been proposed and piloted, but their acceptance among people who inject drugs is unknown. Methods: Persons hospitalized with DUA-IE (N = 16) completed semi-structured interviews to identify facilitators and barriers to 3 proposed IE treatment options: (A) hospitalization for the entirety of antibiotic treatment, the current standard of care; (B) home-based outpatient parenteral antimicrobial therapy via indwelling catheter; or (C) weekly outpatient visits for long-acting antibiotic infusion. Interviews were transcribed and thematically coded to identify participant perspectives and preferences among these strategies. Results: Option A was ranked the most preferred treatment regimen (8 participants, 50%), followed by options C (5 participants, 31%) and B (3 participants, 19%). Participants felt option A provided the most effective treatment for their endocarditis, despite dissatisfaction with the hospitalization length. Options B and C appealed to participants given the convenience of outpatient care; however, inadequate transportation and housing instability were prominently cited as barriers. Conclusions: These diverse patient perspectives should inform trials to evaluate the effectiveness of alternative antibiotic delivery strategies, as well as interventions to improve patient-centered decision-making for DUA-IE treatment.