Background:
Drug use-associated infective endocarditis (DUA-IE) is rising during the opioid epidemic. Infective endocarditis (IE) can require valve surgery, but surgical treatment of DUA-IE has invoked controversy and the extent of its use is unknown.
Objective:
To examine hospitalization trends for DUA-IE, the proportion with surgery, patient characteristics, length of stay and charges.
Design:
Ten-year analysis of a statewide hospital discharge database.
Setting:
North Carolina hospitals, 2007–2017.
Patients:
All patients hospitalized for IE aged ≥ 18 years.
Measurements:
Annual trends in all IE hospitalizations and those with valve surgery, stratified by patients’ drug use. Characteristics of DUA-IE surgical hospitalizations including demographics, length of stay, disposition and charges.
Results:
Of 22,825 IE hospitalizations, 2,602 (11%) were for DUA-IE. Valve surgery was performed in 1,655 (7%) IE hospitalizations, including 285 (17%) for DUA-IE. Annual DUA-IE hospitalizations increased from 0.92 to 10.95 per 100,000, and DUA-IE hospitalizations with surgery rose from 0.10 per 100,000 to 1.38 per 100,000. In the final year, surgeries for DUA-IE comprised 42% of IE valve surgeries. Compared to other IE surgical patients, DUA-IE patients were younger (median age 33 vs. 56), more commonly female (47% vs. 33%) and White (89% vs. 63%), and primarily insured by Medicaid (38%) or uninsured (35%). Hospital stays for DUA-IE were longer (median 27 vs. 17 days) with higher median charges ($250,994 vs. $198,764). Charges for 282 DUA-IE hospitalizations exceeded $78,000,000.
Limitations:
Reliance on administrative data and billing codes.
Conclusions:
DUA-IE hospitalizations and valve surgeries increased over twelve-fold and DUA-IE approached half of all IE valve surgeries. The swell of DUA-IE patients is reshaping the scope, type, and financing of healthcare resources needed for effective IE treatment.