Outpatient Parenteral Antimicrobial Therapy Plus Buprenorphine for Opioid Use Disorder and Severe Injection-related Infections

The association between opioid use disorder and skilled nursing facility acceptances: A multicenter retrospective cohort study

BACKGROUND

Prior single-hospital studies have documented barriers to acceptance that hospitalized patients with opioid use disorder (OUD) face when referred to skilled nursing facilities (SNFs).

OBJECTIVE

To examine the impact of OUD on the number of SNF referrals and the proportion of referrals accepted.

DESIGN, SETTINGS, AND PARTICIPANTS

A retrospective cohort study of hospitalizations with SNF referrals in 2019 at two academic hospitals in Baltimore, MD.

EXPOSURE

OUD status was determined by receipt of medications for OUD during admission, upon discharge, or the presence of a diagnosis code for OUD.

KEY RESULTS

The cohort included 6043 hospitalizations (5440 hospitalizations of patients without OUD and 603 hospitalizations of patients with OUD). Hospitalizations of patients with OUD had more SNF referrals sent (8.9 vs. 5.6, p < .001), had a lower proportion of SNF referrals accepted (31.3% vs. 46.9%, p < .001), and were less likely to be discharged to an SNF (65.6% vs. 70.3%, p = .003). The effect of OUD status on the number of SNF referrals and the proportion of referrals accepted remained significant in multivariable analyses. Our subanalysis showed that reduced acceptances were driven by the hospitalizations of patients discharged without medications for OUD and those receiving methadone. Hospitalizations of patients discharged on buprenorphine were accepted at the same rates as hospitalizations of patients without OUD.

CONCLUSIONS

This multicenter retrospective cohort study found that hospitalizations of patients with OUD had more SNF referrals sent and fewer referrals accepted. Further work is needed to address the limited discharge options for patients with OUD.

Infective Endocarditis in Pregnancy: A Contemporary Cohort

OBJECTIVE

 Pregnancy-related infective endocarditis (IE) caries a high risk of morbidity and mortality. With increasing intravenous drug abuse (IVDA) amid the opioid epidemic, the risk factor profile may be shifting. In this case series, we aimed to describe risk factors and outcomes for peripartum IE in a contemporary cohort.

STUDY DESIGN

 We identified patients with IE diagnosed during pregnancy or up to 6 weeks' postpartum from 2015 through 2018 at a single tertiary care center. We abstracted detailed medical history and clinical outcome measures from the electronic medical record. The diagnosis of IE was supported by the modified Duke Criteria.

RESULTS

 Nine patients had peripartum IE: eight (89%) with a history of IVDA, one with an indwelling central venous catheter (11%), and one with prior IE (11%). None had preexisting congenital or valvular heart disease. Six (67%) had comorbid hepatitis C. Eight cases (89%) had gram-positive cocci with vegetations involving the tricuspid valve (56%) and both mitral and tricuspid valves (22%). Major complications included shock (33%), mechanical ventilation (44%), septic emboli (67%), and noncardiac abscesses (33%). Two patients underwent valve surgery, and there were two cases of postpartum maternal mortality (22%), one from septic shock and one from intracerebral hemorrhage. While four patients (44%) delivered preterm (average gestational age 35 weeks), most delivered vaginally (89%) with only one requiring an emergent caesarean section. There was no fetal mortality, although three newborns (43%) required admission to the neonatal intensive care unit. Two patients were initiated on medication-assisted treatment for opioid use disorder. Consultants included infectious disease, cardiology, cardiac surgery, maternal-fetal medicine, and psychiatry.

CONCLUSION

 These findings confirm that IVDA is a growing risk factor for pregnancy-related IE. Peripartum IE carries a high risk of complications, including maternal mortality, and warrants management with a multidisciplinary care team at a tertiary center.

KEY POINTS

· Intravenous drug use was the most common risk factor for IE in pregnancy.. · IE in pregnancy carries a high morbidity and mortality with complications including septic emboli, septic shock, and need for mechanical ventilation.. · A multidisciplinary team approach can assure the best possible maternal and fetal outcomes..

Exemplar Hospital initiation trial to Enhance Treatment Engagement (EXHIT ENTRE): protocol for CTN-0098B a randomized implementation study to support hospitals in caring for patients with opioid use disorder

BACKGROUND

Hospitalizations involving opioid use disorder (OUD) are increasing. Medications for opioid use disorder (MOUD) reduce mortality and acute care utilization. Hospitalization is a reachable moment for initiating MOUD and arranging for ongoing MOUD engagement following hospital discharge. Despite existing quality metrics for MOUD initiation and engagement, few hospitals provide hospital based opioid treatment (HBOT). This protocol describes a cluster-randomized hybrid type-2 implementation study comparing low-intensity and high-intensity implementation support strategies to help community hospitals implement HBOT.

METHODS

Four state implementation hubs with expertise in initiating HBOT programs will provide implementation support to 24 community hospitals (6 hospitals/hub) interested in starting HBOT. Community hospitals will be randomized to 24-months of either a low-intensity intervention (distribution of an HBOT best-practice manual, a lecture series based on the manual, referral to publicly available resources, and on-demand technical assistance) or a high-intensity intervention (the low-intensity intervention plus funding for a hospital HBOT champion and regular practice facilitation sessions with an expert hub). The primary efficacy outcome, adapted from the National Committee on Quality Assurance, is the proportion of patients engaged in MOUD 34-days following hospital discharge. Secondary and exploratory outcomes include acute care utilization, non-fatal overdose, death, MOUD engagement at various time points, hospital length of stay, and discharges against medical advice. Primary, secondary, and exploratory outcomes will be derived from state Medicaid data. Implementation outcomes, barriers, and facilitators are assessed via longitudinal surveys, qualitative interviews, practice facilitation contact logs, and HBOT sustainability metrics. We hypothesize that the proportion of patients receiving care at hospitals randomized to the high-intensity arm will have greater MOUD engagement following hospital discharge.

DISCUSSION

Initiation of MOUD during hospitalization improves MOUD engagement post hospitalization. Few studies, however, have tested different implementation strategies on HBOT uptake, outcome, and sustainability and only one to date has tested implementation of a specific type of HBOT (addiction consultation services). This cluster-randomized study comparing different intensities of HBOT implementation support will inform hospitals and policymakers in identifying effective strategies for promoting HBOT dissemination and adoption in community hospitals.

TRIAL REGISTRATION

NCT04921787.

Strategies to Improve Patient-Centered Care for Drug Use-Associated Infective Endocarditis: JACC Focus Seminar 2/4

Drug use-associated infective endocarditis (DUA-IE) is a major cause of illness and death for people with substance use disorder (SUD). Investigations to date have largely focused on advancing the care of patients with DUA-IE and included drug use disorder treatment, decisions about surgery, and choice of antibiotics during the period of hospitalization. Transitions from hospital to outpatient care are relatively unstudied and frequently a key factor of uncontrolled infection, continued substance use, and death. In this paper, we review the evidence supporting cross-disciplinary care for people with DUA-IE and highlight domains that need further clinician, institutional, and research investment in clinicians and institutions. We highlight best practices for treating people with DUA-IE, with a focus on addressing health disparities, meeting health-related social needs, and policy changes that can support care for people with DUA-IE in the hospital and when transitioning to the community.

Harm Reduction: A Missing Piece to the Holistic Care of Patients Who Inject Drugs

Background

The rise in injection drug use (IDU) has led to an increase in drug-related infections. Harm reduction is an important strategy for preventing infections among people who inject drugs (PWID). We attempted to evaluate the harm reduction counseling that infectious diseases physicians provide to PWID presenting with infections.

Methods

An electronic survey was distributed to physician members of the Emerging Infections Network to inquire about practices used when caring for patients with IDU-related infections.

Results

In total, 534 ID physicians responded to the survey. Of those, 375 (70%) reported routinely caring for PWID. Most respondents report screening for human immunodeficiency virus (HIV) and viral hepatitis (98%) and discussing the risk of these infections (87%); 63% prescribe immunization against viral hepatitis, and 45% discuss HIV preexposure prophylaxis (PrEP). However, 55% of respondents (n = 205) reported not counseling patients on safer injection strategies. Common reasons for not counseling included limited time and a desire to emphasize antibiotic therapy/medical issues (62%), lack of training (55%), and believing that it would be better addressed by other services (47%). Among respondents who reported counseling PWID, most recommended abstinence from IDU (72%), handwashing and skin cleansing before injection (62%), and safe disposal of needles/drug equipment used before admission (54%).

Conclusions

Almost all ID physicians report screening PWID for HIV and viral hepatitis and discussing the risks of these infections. Despite frequently encountering PWID, fewer than half of ID physicians provide safer injection advice. Opportunities exist to standardize harm reduction education, emphasizing safer injection practices in conjunction with other strategies to prevent infections (eg, HIV PrEP or hepatitis A virus/hepatitis B virus vaccination).

Evaluation of Hepatitis C Treatment Outcomes Among Patients Enrolled in Outpatient Parenteral Antibiotic Therapy-Boston, Massachusetts, 2016-2021

In our Boston-based outpatient parenteral antibiotic therapy (OPAT) program between 2016 and 2021, we found that a low proportion of patients with active hepatitis C virus (HCV) were prescribed HCV treatment by their OPAT provider and few achieved sustained virologic response. Clinicians should consider concurrent HCV treatment during OPAT.

Perspectives on the Use of Outpatient Parenteral Antibiotic Therapy for People who Inject Drugs: Results From an Online Survey of Infectious Diseases Clinicians

Injection-related infections require prolonged antibiotic therapy. Outpatient parenteral antimicrobial therapy (OPAT) has been shown to be feasible for people who inject drugs (PWID) in some settings. We report a national survey on practice patterns and attitudes of infectious diseases clinicians in the United States regarding use of OPAT for PWID.

Outcomes of Partial Oral Antibiotic Treatment for Complicated Staphylococcus aureus Bacteremia in People Who Inject Drugs

BACKGROUND

Staphylococcus aureus represents the leading cause of complicated bloodstream infections among persons who inject drugs (PWID). Standard of care (SOC) intravenous (IV) antibiotics result in high rates of treatment success but are not feasible for some PWID. Transition to oral antibiotics may represent an alternative treatment option.

METHODS

We evaluated all adult patients with a history of injection drug use hospitalized from January 2016 through December 2021 with complicated S. aureus bloodstream infections, including infective endocarditis, epidural abscess, vertebral osteomyelitis, and septic arthritis. Patients were compared by antibiotic treatment (standard of care intravenous [SOC IV] antibiotics, incomplete IV therapy, or transition from initial IV to partial oral) using the primary composite endpoint of death or readmission from microbiologic failure within 90 days of discharge.

RESULTS

Patients who received oral antibiotics after an incomplete IV antibiotic course were significantly less likely to experience microbiologic failure or death than patients discharged without oral antibiotics (P < .001). There was no significant difference in microbiologic failure rates when comparing patients who were discharged on partial oral antibiotics after receiving at least 10 days of IV antibiotics with SOC regimens (P > .9).

CONCLUSIONS

Discharge of PWID with partially treated complicated S. aureus bacteremias without oral antibiotics results in high rates of morbidity and should be avoided. For PWID hospitalized with complicated S. aureus bacteremias who have received at least 10 days of effective IV antibiotic therapy after clearance of bacteremia, transition to oral antibiotics with outpatient support represents a potential alternative if the patient does not desire SOC IV antibiotic therapy.

From sea to shining IV: the current state of OPAT in the United States

First described in the United States, outpatient parenteral antibiotic therapy (OPAT) has become an indispensable part of treating serious infections. The proportion of infectious disease (ID) physicians utilizing a formal OPAT program has increased in recent years, but remains a minority. In addition, many ID physicians have indicated that OPAT programs have inadequate financial and administrative support. Given the medical complexity of patients receiving OPAT, as well as the challenges of communicating with OPAT providers across health care facilities and systems, OPAT programs ideally should involve a multidisciplinary team. The majority of patients in the United States receive OPAT either at home with assistance from home infusion companies and visiting nurses or at a skilled nursing facility (SNF), though the latter has been associated with lower rates of patient satisfaction. Current and future opportunities and challenges for OPAT programs include providing OPAT services for people who inject drugs (PWID) and incorporating the increasing use of oral antibiotics for infections historically treated with parenteral therapy. In this review, we will discuss the current practice patterns and patient experiences with OPAT in the United States, as well as identify future challenges and opportunities for OPAT programs.

Integrated Infectious Disease and Substance Use Disorder Care for the Treatment of Injection Drug Use-Associated Infections: A Prospective Cohort Study With Historical Control

Background

To address the infectious disease (ID) and substance use disorder (SUD) syndemic, we developed an integrated ID/SUD clinical team rooted in harm reduction at a county hospital in Miami, Florida. The Severe Injection-Related Infection (SIRI) team treats people who inject drugs (PWID) and provides medical care, SUD treatment, and patient navigation during hospitalization and after hospital discharge. We assessed the impact of the SIRI team on ID and SUD treatment and healthcare utilization outcomes.

Methods

We prospectively collected data on patients seen by the SIRI team. A diagnostic code algorithm confirmed by chart review was used to identify a historical control group of patients with SIRI hospitalizations in the year preceding implementation of the SIRI team. The primary outcome was death or readmission within 90 days post-hospital discharge. Secondary outcomes included initiation of medications for opioid use disorder (MOUD) and antibiotic course completion.

Results

There were 129 patients included in the study: 59 in the SIRI team intervention and 70 in the pre-SIRI team control group. SIRI team patients had a 45% risk reduction (aRR, 0.55 [95% confidence interval CI, .32-.95]; 24% vs 44%) of being readmitted in 90 days or dying compared to pre-SIRI historical controls. SIRI team patients were more likely to initiate MOUD in the hospital (93% vs 33%, P < .01), complete antibiotic treatment (90% vs 60%, P < .01), and less likely to have patient-directed discharge (17% vs 37%, P = .02).

Conclusions

An integrated ID/SUD team was associated with improvements in healthcare utilization, MOUD initiation, and antibiotic completion for PWID with infections.

Improving care for individuals with serious infections who inject drugs

Background

Hospitalizations for serious infections requiring long-term intravenous (IV) antimicrobials related to injection drug use have risen sharply over the last decade. At our rural tertiary care center, opportunities for treatment of underlying substance use disorders were often missed during these hospital admissions. Once medically stable, home IV antimicrobial therapy has not traditionally been offered to this patient population due to theoretical concerns about misuse of long-term IV catheters, leading to discharges with suboptimal treatment regimens, lengthy hospital stays, or care that is incongruent with patient goals and preferences.

Methods

A multidisciplinary group of clinicians and patients set out to redesign and improve care for this patient population through a health care innovation process, with a focus on increasing the proportion of patients who may be discharged on home IV therapy. Baseline assessment of current experience was established through retrospective chart review and extensive stakeholder analysis. The innovation process was based in design thinking and facilitated by a health care delivery improvement incubator.

Results

The components of the resulting intervention included early identification of hospitalized people who inject drugs with serious infections, a proactive psychiatry consultation service for addiction management for all patients, a multidisciplinary care conference to support decision making around treatment options for infection and substance use, and care coordination/navigation in the outpatient setting with a substance use peer recovery coach and infectious disease nurse for patients discharged on home IV antimicrobials. Patients discharged on home IV therapy followed routine outpatient parenteral antimicrobial therapy (OPAT) protocols and treatment protocols for addiction with their chosen provider.

Conclusion

An intervention developed through a design-thinking-based health care redesign process improved patient-centered care for people with serious infections who inject drugs.

"They Just Assume That We're All Going to Do the Wrong Thing With It. It's Just Not True": Stakeholder Perspectives About Peripherally Inserted Central Catheters in People Who Inject Drugs

Background

In the absence of adequate harm reduction opportunities, people who inject drugs (PWID) are at increased risk for serious infections. Infectious diseases guidelines recommend extended periods of intravenous antibiotic treatment through peripherally inserted central catheters (PICCs), but PWID are often deemed unsuitable for this treatment. We conducted semi-structured interviews and focus groups to understand the perspectives and opinions of patients and clinicians on the use of PICCs for PWID.

Methods

We approached patients and clinicians (doctors, nurses, PICC nurses, social workers, and case workers) involved in patient care at Tufts Medical Center (Boston, Massachusetts) between August 2019 and April 2020 for semi-structured interviews and focus groups.

Results

Eleven of 14 (79%) patients agreed to participate in an in-depth interview, and 5 role-specific clinician focus groups (1 group consisting of infectious diseases, internal medicine, and addiction psychiatry doctors, 2 separate groups of floor nurses, 1 group of PICC nurses, and 1 group of social workers) were completed. Emergent themes included the overall agreement that PICCs improve healthcare, patients' feelings that their stage of recovery from addiction was not taken into consideration, and clinicians' anecdotal negative experiences driving decisions on PICCs.

Conclusions

When analyzed together, the experiences of PWID and clinicians shed light on ways the healthcare system can improve the quality of care for PWID hospitalized for infections. Further research is needed to develop a system of person-centered care for PWID that meets the specific needs of patients and improves the relationship between them and the healthcare system.

Health care professional perspectives on discharging hospitalized patients with injection drug use-associated infections

Background:

Patients with injection drug use (IDU)-associated infections traditionally experience prolonged hospitalizations, which often result in negative experiences and bad outcomes. Harm reduction approaches that value patient autonomy and shared decision-making regarding outpatient treatment options may improve outcomes. We sought to identify health care professionals (HCPs) perspectives on the barriers to offering four different options to hospitalized people who use drugs (PWUD): long-term hospitalization, oral antibiotics, long-acting antibiotics at an infusion center, and outpatient parenteral antibiotics.

Methods:

We recruited HCPs (n = 19) from a single tertiary care center in Portland, Maine. We interviewed HCPs involved with discharge decision-making and other HCPs involved in the specialized care of PWUD. Semi-structured interviews elicited lead HCP values, preferences, and concerns about presenting outpatient antimicrobial treatment options to PWUD, while support HCPs provided contextual information. We used the iterative categorization approach to code and thematically analyze transcripts.

Results:

HCPs were willing to present outpatient treatment options for patients with IDU-associated infections, yet several factors contributed to reluctance. First, insufficient resources, such as transportation, may make these options impractical. However, HCPs may be unaware of existing community resources or viable treatment options. They also may believe the hospital protects patients, and that discharging patients into the community exposes them to structural harms. Some HCPs are concerned that patients with substance use disorder will not make ‘good’ decisions regarding outpatient antimicrobial options. Finally, there is uncertainty about how responsibility for offering outpatient treatment is shared across changing care teams.

Conclusion:

HCPs perceive many barriers to offering outpatient care for people with IDU-associated infections, but with appropriate interventions to address their concerns, may be open to considering more options. This study provides important insights and contextual information that can help inform specific harm reduction interventions aimed at improving care of people with IDU-associated infections.

Management of Infective Endocarditis in People Who Inject Drugs: A Scientific Statement From the American Heart Association

BACKGROUND

The American Heart Association has sponsored both guidelines and scientific statements that address the diagnosis, management, and prevention of infective endocarditis. As a result of the unprecedented and increasing incidence of infective endocarditis cases among people who inject drugs, the American Heart Association sponsored this original scientific statement. It provides a more in-depth focus on the management of infective endocarditis among this unique population than what has been provided in prior American Heart Association infective endocarditis-related documents.

METHODS

A writing group was named and consisted of recognized experts in the fields of infectious diseases, cardiology, addiction medicine, and cardiovascular surgery in October 2021. A literature search was conducted in Embase on November 19, 2021, and multiple terms were used, with 1345 English-language articles identified after removal of duplicates.

CONCLUSIONS

Management of infective endocarditis in people who inject drugs is complex and requires a unique approach in all aspects of care. Clinicians must appreciate that it requires involvement of a variety of specialists and that consultation by addiction-trained clinicians is as important as that of more traditional members of the endocarditis team to improve infective endocarditis outcomes. Preventive measures are critical in people who inject drugs and are cured of an initial bout of infective endocarditis because they remain at extremely high risk for subsequent bouts of infective endocarditis, regardless of whether injection drug use is continued.

A Taxonomy of Hospital-Based Addiction Care Models: a Scoping Review and Key Informant Interviews

BACKGROUND

There is pressing need to improve hospital-based addiction care. Various models for integrating substance use disorder care into hospital settings exist, but there is no framework for describing, selecting, or comparing models. We sought to fill that gap by constructing a taxonomy of hospital-based addiction care models based on scoping literature review and key informant interviews.

METHODS

Methods included a scoping review of the literature on US hospital-based addiction care models and interventions for adults, published between January 2000 and July 2021. We conducted semi-structured interviews with 15 key informants experienced in leading, implementing, evaluating, andpracticing hospital-based addiction care to explore model characteristics, including their perceived strengths, limitations, and implementation considerations. We synthesized findings from the literature review and interviews to construct a taxonomy of model types.

RESULTS

Searches identified 2,849 unique abstracts. Of these, we reviewed 280 full text articles, of which 76 were included in the final review. We added 8 references from reference lists and informant interviews, and 4 gray literature sources. We identified six distinct hospital-based addiction care models. Those classified as addiction consult models include (1) interprofessional addiction consult services, (2) psychiatry consult liaison services, and (3) individual consultant models. Those classified as practice-based models, wherein general hospital staff integrate addiction care into usual practice, include (4) hospital-based opioid treatment and (5) hospital-based alcohol treatment. The final type was (6) community-based in-reach, wherein community providers deliver care. Models vary in their target patient population, staffing, and core clinical and systems change activities. Limitations include that some models have overlapping characteristics and variable ways of delivering core components.

DISCUSSION

A taxonomy provides hospital clinicians and administrators, researchers, and policy-makers with a framework to describe, compare, and select models for implementing hospital-based addiction care and measure outcomes.

Opioid agonist treatment and risk of death or rehospitalization following injection drug use-associated bacterial and fungal infections: A cohort study in New South Wales, Australia

BACKGROUND

Injecting-related bacterial and fungal infections are associated with significant morbidity and mortality among people who inject drugs (PWID), and they are increasing in incidence. Following hospitalization with an injecting-related infection, use of opioid agonist treatment (OAT; methadone or buprenorphine) may be associated with reduced risk of death or rehospitalization with an injecting-related infection.

METHODS AND FINDINGS

Data came from the Opioid Agonist Treatment Safety (OATS) study, an administrative linkage cohort including all people in New South Wales, Australia, who accessed OAT between July 1, 2001 and June 28, 2018. Included participants survived a hospitalization with injecting-related infections (i.e., skin and soft-tissue infection, sepsis/bacteremia, endocarditis, osteomyelitis, septic arthritis, or epidural/brain abscess). Outcomes were all-cause death and rehospitalization for injecting-related infections. OAT exposure was classified as time varying by days on or off treatment, following hospital discharge. We used separate Cox proportional hazards models to assess associations between each outcome and OAT exposure. The study included 8,943 participants (mean age 39 years, standard deviation [SD] 11 years; 34% women). The most common infections during participants' index hospitalizations were skin and soft tissue (7,021; 79%), sepsis/bacteremia (1,207; 14%), and endocarditis (431; 5%). During median 6.56 years follow-up, 1,481 (17%) participants died; use of OAT was associated with lower hazard of death (adjusted hazard ratio [aHR] 0.63, 95% confidence interval [CI] 0.57 to 0.70). During median 3.41 years follow-up, 3,653 (41%) were rehospitalized for injecting-related infections; use of OAT was associated with lower hazard of these rehospitalizations (aHR 0.89, 95% CI 0.84 to 0.96). Study limitations include the use of routinely collected administrative data, which lacks information on other risk factors for injecting-related infections including injecting practices, injection stimulant use, housing status, and access to harm reduction services (e.g., needle exchange and supervised injecting sites); we also lacked information on OAT medication dosages.

CONCLUSIONS

Following hospitalizations with injection drug use-associated bacterial and fungal infections, use of OAT is associated with lower risks of death and recurrent injecting-related infections among people with opioid use disorder.

Dealing with the epidemic of endocarditis in people who inject drugs

North America is facing an opioid epidemic and growing illicit drug supply, contributing to growing numbers of injection drug use-related infective endocarditis (IDU-IE). Patients with IDU-IE have high early and late mortality. Patients with IDU-IE more commonly present with right-sided IE compared to those with non-IDU-IE and a majority are a result of S. aureus. While most patients can be successfully managed with intravenous antibiotic treatment, surgery is often required in part related to high relapse rates, potential treatment biases, and more aggressive pathophysiology in some. Multidisciplinary management as endocarditis teams, including not only cardiologists and cardiac surgeons but also infectious disease specialists, drug addiction experts, social workers, neurologists and/or neurosurgeons, is essential to best manage substance use disorder and facilitate safe discharge to home and society. Structural and population-level interventions, such as harm reduction programs, are necessary to reduce IDU-IE relapse rates in the community and other IDU-related health concerns such as overdoses. In this review, we describe the pathophysiological, clinical, surgical, social, and ethical characteristics of IDU-IE and the management thereof. We present the most recent clinical guidelines for this condition and discuss existing gaps in knowledge to guide future research, practice changes, and policy interventions.

Health Care Utilization Patterns for Patients With a History of Substance Use Requiring OPAT

Background

Uninsured people who use drugs (PWUD) require extended parenteral antibiotic therapy when diagnosed with complex infections such as osteomyelitis. They are ineligible to enroll in our self-administered outpatient antimicrobial therapy (S-OPAT) program and instead sent to a skilled nursing facility (SNF). We aim to retrospectively assess clinical outcomes of PWUD discharged from our safety net hospital to complete OPAT in an SNF.

Methods

Using our hospital electronic medical record, PWUD discharged to an SNF for extended antibiotic therapy were identified for the study period, 1/1/17–4/30/18. Demographics, drug use, discharge diagnosis, antibiotic therapy, discharge disposition from SNF (AMA, early non-AMA, completed), 30-day emergency department (ED) utilization, and 30-day readmission were collected for the study cohort. ED utilization and 30-day readmission rates were analyzed by disposition group.

Results

While the majority of patients completed treatment (83), a sizeable number left AMA (26) or early non-AMA (20). Patients who left early, AMA or non-AMA, had increased rates of 30-day readmission or ED utilization (P=.01) and increased rates of 30-day readmission alone (P=.01), but not ED utilization alone (P=.43), compared with patients who completed treatment.

Conclusions

In our cohort, many PWUD discharged to an SNF to receive parenteral antibiotics did not complete treatment. These patients were observed to have increased health care utilization compared with patients completing therapy.

Antibiotic therapy completion for injection drug use-associated infective endocarditis at a center with routine addiction medicine consultation: a retrospective cohort study

Background

Addiction medicine consultation and medications for opioid use disorder are shown to improve outcomes for patients hospitalized with infective endocarditis associated with injection drug use. Existing studies describe settings where addiction medicine consultation and initiation of medications for opioid use disorder are not commonplace, and rates of antibiotic therapy completion are infrequently reported. This retrospective study sought to quantify antibiotic completion outcomes in a setting where these interventions are routinely implemented.

Methods

Medical records of patients hospitalized with a diagnosis of bacteremia or infective endocarditis at an urban hospital between October 1, 2015 and December 31, 2017 were screened for active injection drug use within 6 months of hospitalization and infective endocarditis. Demographic and clinical parameters, receipt of antibiotics and medications for opioid use disorder, and details of re-hospitalizations within 1 year of discharge were recorded.

Results

Of 567 subjects screened for inclusion, 47 had infective endocarditis and active injection drug use. Addiction medicine consultation was completed for 41 patients (87.2%) and 23 (48.9%) received medications for opioid use disorder for the entire index admission. Forty-three patients (91.5%) survived to discharge, of which 28 (59.6%) completed antibiotic therapy. Twenty-nine survivors (67.4%) were re-hospitalized within 1 year due to infectious complications of injection drug use.

Conclusions

Among patients admitted to a center with routine addiction medicine consultation and initiation of medications for opioid use disorder, early truncation of antibiotic therapy and re-hospitalization were commonly observed.

Can I Safely Discharge a Patient with a Substance Use Disorder Home with a Peripherally Inserted Central Catheter?

Discharging Patients Who Use Drugs Home with PICCAmid the U.S. overdose crisis, serious injection-related infections are rising. Determining where a patient goes after hospitalization can be a challenge due to the need for prolonged parenteral antibiotics, prompting a common clinical question: Can I safely discharge a patient with a substance use disorder home with a peripherally inserted central catheter?

Simulated Cost-effectiveness and Long-term Clinical Outcomes of Addiction Care and Antibiotic Therapy Strategies for Patients With Injection Drug Use-Associated Infective Endocarditis

IMPORTANCE

Emerging evidence supports the use of outpatient parenteral antimicrobial therapy (OPAT) and, in many cases, partial oral antibiotic therapy for the treatment of injection drug use-associated infective endocarditis (IDU-IE); however, long-term outcomes and cost-effectiveness remain unknown.

OBJECTIVE

To compare the added value of inpatient addiction care services and the cost-effectiveness and clinical outcomes of alternative antibiotic treatment strategies for patients with IDU-IE.

DESIGN, SETTING, AND PARTICIPANTS

This decision analytical modeling study used a validated microsimulation model to compare antibiotic treatment strategies for patients with IDU-IE. Model inputs were derived from clinical trials and observational cohort studies. The model included all patients with injection opioid drug use (N = 5 million) in the US who were eligible to receive OPAT either in the home or at a postacute care facility. Costs were annually discounted at 3%. Cost-effectiveness was evaluated from a health care sector perspective over a lifetime starting in 2020. Probabilistic sensitivity, scenario, and threshold analyses were performed to address uncertainty.

INTERVENTIONS

The model simulated 4 treatment strategies: (1) 4 to 6 weeks of inpatient intravenous (IV) antibiotic therapy along with opioid detoxification (usual care strategy), (2) 4 to 6 weeks of inpatient IV antibiotic therapy along with inpatient addiction care services that offered medication for opioid use disorder (usual care/addiction care strategy), (3) 3 weeks of inpatient IV antibiotic therapy along with addiction care services followed by OPAT (OPAT strategy), and (4) 3 weeks of inpatient IV antibiotic therapy along with addiction care services followed by partial oral antibiotic therapy (partial oral antibiotic strategy).

MAIN OUTCOMES AND MEASURES

Mean percentage of patients completing treatment for IDU-IE, deaths associated with IDU-IE, life expectancy (measured in life-years [LYs]), mean cost per person, and incremental cost-effectiveness ratios (ICERs).

RESULTS

All modeled scenarios were initialized with 5 million individuals (mean age, 42 years; range, 18-64 years; 70% male) who had a history of injection opioid drug use. The usual care strategy resulted in 18.63 LYs at a cost of $416 570 per person, with 77.6% of hospitalized patients completing treatment. Life expectancy was extended by each alternative strategy. The partial oral antibiotic strategy yielded the highest treatment completion rate (80.3%) compared with the OPAT strategy (78.8%) and the usual care/addiction care strategy (77.6%). The OPAT strategy was the least expensive at $412 150 per person. Compared with the OPAT strategy, the partial oral antibiotic strategy had an ICER of $163 370 per LY. Increasing IDU-IE treatment uptake and decreasing treatment discontinuation made the partial oral antibiotic strategy more cost-effective compared with the OPAT strategy. When assuming that all patients with IDU-IE were eligible to receive partial oral antibiotic therapy, the strategy was cost-saving and resulted in 0.0247 additional discounted LYs. When treatment discontinuation was decreased from 3.30% to 2.65% per week, the partial oral antibiotic strategy was cost-effective compared with OPAT at the $100 000 per LY threshold.

CONCLUSIONS AND RELEVANCE

In this decision analytical modeling study, incorporation of OPAT or partial oral antibiotic approaches along with addiction care services for the treatment of patients with IDU-IE was associated with increases in the number of people completing treatment, decreases in mortality, and savings in cost compared with the usual care strategy of providing inpatient IV antibiotic therapy alone.

Patients with serious injection drug use related infections who experience patient directed discharges on oral antibiotics have high rates of antibiotic adherence but require multidisciplinary outpatient support for retention in care

Background

Persons who inject drugs (PWID) are frequently admitted for serious injection-related infections (SIRIs). Outcomes and adherence to oral antibiotics for PWID with patient-directed discharge (PDD) remain understudied.

Methods

We conducted a prospective multicenter bundled quality improvement project of PWID with SIRI at 3 hospitals in Missouri. All PWID with SIRI were offered multidisciplinary care while inpatient, including the option of addiction medicine consultation and medications for opioid use disorder (MOUD). All patients were offered oral antibiotics in the event of a PDD either at discharge or immediately after discharge through an infectious diseases telemedicine clinic. Additional support services included health coaches, a therapist, a case manager, free clinic follow-up, and medications in an outpatient bridge program. Patient demographics, comorbidities, 90-day readmissions, and substance use disorder clinic follow-up were compared between PWID with PDD on oral antibiotics and those who completed intravenous (IV) antibiotics using an as-treated approach.

Results

Of 166 PWID with SIRI, 61 completed IV antibiotics inpatient (37%), while 105 had a PDD on oral antibiotics (63%). There was no significant difference in 90-day readmission rates between groups (P = .819). For PWID with a PDD on oral antibiotics, 7.6% had documented nonadherence to antibiotics, 67% had documented adherence, and 23% were lost to follow-up. Factors protective against readmission included antibiotic and MOUD adherence, engagement with support team, and clinic follow-up.

Conclusions

PWID with SIRI who experience a PDD should be provided with oral antibiotics. Multidisciplinary outpatient support services are needed for PWID with PDD on oral antibiotics.

Infectious Complications of Injection Drug Use

The opioid overdose epidemic is one of the leading causes of death in adults. Its devastating effects have included not only a burgeoning overdose crisis but also multiple converging infectious diseases epidemics. The use of both opioids and other substances through intravenous (IV) administration places individuals at increased risks of infectious diseases ranging from invasive bacterial and fungal infections to human immunodeficiency virus (HIV) and viral hepatitis. In 2012, there were 530,000 opioid use disorder (OUD)-related hospitalizations in the United States (US), with $700 million in costs associated with OUD-related infections. The scale of the crisis has continued to increase since that time, with hospitalizations for injection drug use-related infective endocarditis (IDU-IE) increasing by as much as 12-fold from 2010 to 2015. Deaths from IDU-IE alone are estimated to result in over 7,260,000 years of potential life lost over the next 10 years. There have been high-profile injection-related HIV outbreaks, and injection drug use (IDU) is now the most common risk factor for hepatitis C virus (HCV). As this epidemic continues to grow, clinicians in all aspects of medical care are increasingly confronted with infectious complications of IDU. This review will describe the pathogenesis, clinical syndromes, epidemiology, and models of treatment for common infectious complications among persons who inject drugs (PWIDs).

Design and protocol of the Buprenorphine plus Outpatient Parenteral Antimicrobial Therapy (B-OPAT) study: a randomized clinical trial of integrated outpatient treatment of opioid use disorder and severe, injection-related infections

Introduction

A marked increase in hospitalizations for severe, injection-related infections (SIRI) has been associated with the opioid epidemic. Outpatient parenteral antibiotic therapy (OPAT) is typically not offered to persons with opioid use disorder (OUD) and SIRI, though increasing evidence suggests it may be feasible and safe. This study evaluates the efficacy and cost-effectiveness of an integrated care model combining Buprenorphine treatment of OUD with OPAT for SIRI (B-OPAT) compared with treatment as usual on key OUD, infectious disease, and health economic outcomes. B-OPAT expands and incorporates key elements of established clinical models, including inpatient initiation of buprenorphine for OUD, inpatient infectious disease consultation for SIRI, office-based treatment of OUD, and OPAT, and includes more frequent clinical outpatient visits than standard OPAT. A qualitative evaluation is included to contextualize effectiveness outcomes and identify barriers and facilitators to intervention adoption and implementation.

Methods

B-OPAT is a single-site, randomized, parallel-group, superiority trial recruiting 90 adult inpatients hospitalized with OUD and SIRI who require at least 2 weeks of intravenous (IV) antibiotic therapy. After screening, eligible participants are randomized 1:1 to either discharge once medically stable to an integrated outpatient treatment care model combining Buprenorphine and OPAT (B-OPAT) or to Treatment As Usual (TAU). The primary outcome measure is the proportion of urine samples negative for illicit opioids in the 12 weeks after discharge from the hospital. Key secondary OUD outcomes include self-reported number of days of illicit opioid abstinence and 12-week retention in buprenorphine treatment. The infection outcomes are completion of recommended IV antibiotic therapy, peripherally inserted central catheter (PICC) complications, and readmission related to primary SIRI.

Conclusions

The B-OPAT study will help address the important question of whether it is clinically effective and cost-effective to discharge persons with OUD and SIRI to an integrated outpatient care model combining OUD treatment with OPAT relative to TAU (Clinicaltrials.gov Identifier: NCT04677114).

Medication for opioid use disorder at hospital discharge is not associated with intravenous antibiotic completion in post-acute care facilities

Background:

People with opioid use disorder and severe infections may complete their prolonged courses of outpatient parenteral antimicrobial therapy at a post-acute care facility due to adherence and safety concerns. We hypothesized that treatment with medications for opioid use disorder, such as methadone and buprenorphine, would increase antibiotic completion in these facilities.

Methods:

We performed a retrospective cohort study of people with opioid use disorder and severe infections who were discharged from the University of Maryland Medical Center to a post-acute care facility to complete intravenous antibiotic therapy. The primary outcome was completion of outpatient parenteral antimicrobial therapy. We compared the rate of antibiotic completion between patients prescribed and not prescribed medication for opioid use disorder at discharge from the acute care hospital.

Results:

A total of 161 patient encounters were included; the mean age was 43.4 years and 56% of patients were male. In 48% of the encounters, the patient was homeless and in 68% they recently injected drugs. The most common infectious syndrome was osteoarticular (44.1%). Medication for opioid use disorder was prescribed at discharge in 103 of 161 encounters and was newly started in 27 encounters. Similar rates of outpatient parenteral antimicrobial therapy completion were found in those who received (65/103) and did not receive (33/58) medication for opioid use disorder at discharge (odds ratio: 1.29; 95% confidence interval: 0.68–2.54; p = 0.44).

Conclusion:

Medication for opioid use disorder prescription at discharge was not associated with completion of outpatient parenteral antimicrobial therapy in a post-acute care facility. Our study is limited by possible selection bias and infrequent initiation of medication for opioid use disorder, which may have minimized the effect on antibiotic completion.

Clinical impact, costs, and cost-effectiveness of hospital-based strategies for addressing the US opioid epidemic: a modelling study

Background

The syndemic of injection drug use and serious injection-related infections is leading to increasing mortality in the USA. Although outpatient treatment with medications for opioid use disorder reduces overdose risk and recurrent infections, hospitalisation remains common. We evaluated the clinical impact, costs, and cost-effectiveness of hospital-based strategies to address the US opioid epidemic.

Methods

We developed a microsimulation model to compare the cost-effectiveness of: standard hospital care—detoxification for opioids, no addiction consult service (status quo); expanded inpatient prescribing of medications for opioid use disorder, including bridge prescriptions (ie, medication until they can see an outpatient provider) when possible (medications for opioid use disorder with bridge); implementation of addiction consult services within the hospital (addiction consult services alone); and a combined medication for opioid use disorder with addiction consult services strategy (combined). We used clinical trials and observational cohorts to inform model inputs. Outcomes were life-years, discounted costs, incremental cost-effectiveness ratios, hospitalisations, and deaths. We did deterministic sensitivity analyses on key model inputs related to costs and sequelae of drug use and probabilistic sensitivity analysis to further address uncertainty.

Findings

Among people who inject opioids in the USA, we estimated that expanding medications for opioid use disorder with bridge prescriptions would reduce hospitalisations and overdose deaths by 3·2% and 3·6%, respectively, and the combination of expanded medications with opioid use disorder along with addiction consult sevices would reduce hospitalisations and overdoses by 5·2% and 6·6%, respectively, compared with the status quo. Mean lifetime costs ranged from US$731 400 (95% credible interval 447 911–859 189 for the medications for opioid use disorder strategy) to $741 200 (470 930–868 551 for the combined strategy) per person. Assuming a willingness-to-pay threshold of $100 000 per life-year gained, medications for opioid use disorder with bridge and combined strategies were cost-effective ($7600 and $14 300, respectively). A scenario that assumed ideal access to harm reduction services came to the same conclusions as the base case and our results were robust in deterministic and probabilistic sensitivity analyses.

Interpretation

The combined interventions of expanding hospital-based prescribing of medications for opioid use disorder and implementing addiction consult services could improve life expectancy, be cost-effective, and could be the basis for a comprehensive hospital-based strategy for addressing the opioid epidemic in the USA and countries with similar opioid epidemics.

Funding

National Institute on Drug Abuse and National Institute of Allergy and Infectious Diseases.

An observational study on the use of long acting buprenorphine (ublocade) and a amper resistant PICC for utpatient IV antibiotic administration in atients with serious infections and pioid se isorder; The project

What is STOP OUD?

The STOP OUD project is an observational study on the use of long-acting buprenorphine (Sublocade) and a Tamper resistant PICC clamp for Outpatient IV antibiotic administration in Patients with serious infections and Opioid Use Disorder (STOP OUD).

Background

The US opioid crisis is driving up serious infections related to intravenous drug use. These infections require prolonged courses of antibiotics, often resulting in lengthy hospital stays. Extended hospitalizations for monitored parenteral antibiotics for patients with opioid use disorder are challenging for patients, reduce bed capacity, and are associated with significant cost. This observational study reviews the administration of intravenous (IV) antibiotics in a monitored outpatient setting using long-acting injectable buprenorphine (Sublocade, Indivior Inc., North Chesterfield, VA) and a tamper resistant clamp in patients with opioid use disorder .

Methods

Long-acting buprenorphine and a tamper resistant clamp were used to treat patients with serious infections and opioid use disorder as outpatients.

Results

Hospital days avoided were 30-days per STOP OUD project participant. Eleven of thirteen STOP OUD project participants completed their antibiotic courses as prescribed, there was no evidence of peripherally inserted central catheter (PICC) tampering, and they rated their care as a mean of 4.9/5 (SD 0.4). Institutional savings per STOP OUD patient was $33,000. Outpatient infusion costs were $9,300 for a net savings of $23,700 per STOP OUD project participant. Infections resolved in all participants.

Conclusions

The STOP OUD project reduced hospital length of stay for patients with opioid use disorder and serious infections, and had a favorable financial impact.

Harm reduction for the treatment of patients with severe injection-related infections: description of the Jackson SIRI Team

INTRODUCTION

Hospitalizations for severe injection-related infections (SIRI), such as endocarditis, osteomyelitis, and skin and soft tissue infections (SSTI) are increasingly common. People who inject drugs (PWID) experiencing SIRIs often receive inadequate substance use disorder (SUD) treatment and lack of access to harm reduction services. This translates into lengthy hospitalizations with high rates of patient-directed discharge, readmissions, and post-hospitalization mortality. The purpose of this study was to describe the development of an integrated "SIRI Team" and its initial barriers and facilitators to success.

MATERIALS AND METHODS

The Jackson SIRI Team was developed to improve both hospital and patient-level outcomes for individuals hospitalized with SIRIs at Jackson Memorial Hospital, a 1550-bed public hospital in Miami, Florida, United States. The SIRI Team provides integrated infectious disease and SUD treatment across the healthcare system starting from the inpatient setting and continuing for 90-days post-hospital discharge. The team uses a harm reduction approach, provides care coordination, focuses on access to medications for opioid use disorder (MOUD), and utilizes a variety of infection and addiction treatment modalities to suit each individual patient.

RESULTS

Over the initial 8-months of the SIRI Team, 21 patients were treated with 20 surviving until discharge. Infections included osteomyelitis, endocarditis, bacteraemia/fungemia, SSTIs, and septic arthritis. All patients had OUD and 95% used stimulants. All patients were discharged on MOUD and 95% completed their prescribed antibiotic course. At 90-days post-discharge, 25% had been readmitted and 70% reported taking MOUD.

CONCLUSIONS

A model of integrated infectious disease and SUD care for the treatment of SIRIs has the potential to improve infection and addiction outcomes. Providing attentive, patient-centered care, using a harm reduction approach can facilitate engagement of this marginalized population with the healthcare system.KEY MESSAGESIntegrated infectious disease and addiction treatment is a novel approach to treating severe injection-related infections.Harm reduction should be applied to treating patients with severe injection-related infections with a goal of facilitating antibiotic completion, remission from substance use disorder, and reducing hospital readmissions.

Long-acting buprenorphine injectables: Opportunity to improve opioid use disorder treatment among rural populations

The opioid epidemic continues with escalating overdose deaths further exacerbated by the coronavirus pandemic, despite having efficacious medication treatments for opioid use disorder (MOUD). Most persons with OUD remain undiagnosed, without ever receiving MOUD, and even among those who initiate MOUD, retention is infrequently longer than 6 months (Williams et al., 2019). Treatment access remains particularly problematic in rural areas that often have few providers and limited resources (Ghertner, 2019). There are two new injectable long-acting buprenorphine (LAB) formulations recently approved in the United States and abroad (Lofwall et al., 2018; Walsh et al., 2017; Haight et al., 2019). They hold promise to improve treatment access and retention by decreasing risks of nonadherence, diversion and misuse and may be particularly attractive during a pandemic in order to minimize provider and pharmacy contacts (Roberts et al., 2020) and help improve access to care in rural areas. There are several ongoing evaluations of LAB injectables in large multi-site randomized clinical trials sponsored by the National Institute on Drug Abuse and Veterans Administration Office of Research and Development in settings with special populations that exist in both urban and rural settings. Understanding the potential clinical benefits of LAB injectables along the care continuum, particularly for rural areas is essential to successful implementation in the complex healthcare system.

Association of a Substance Use Disorder with Infectious Diseases among Adult Home Healthcare Patients with a Venous Access Device

Substance use disorders (SUDs) and high incidence of infectious diseases are both critical public health issues. Among patients who use a venous access device (VAD) in home care settings, SUDs may play a role in increasing their risk of having a concurrent infectious disease. This study examined the association of SUD with infectious diseases among adult home healthcare patients with a VAD. We identified adult patients with an existing VAD who were admitted to a home healthcare agency August 1, 2017-July 31, 2018 from the electronic health records of a large Medicare-certified agency. Four serious infectious diseases (endocarditis, epidural abscess, septic arthritis, and osteomyelitis) and SUD related to injectable drugs were identified using relevant ICD-10 codes. Multiple logistic regression was performed to examine the association. Of 416 patients with a VAD, 12% (n = 50) had at least one diagnosis of a serious infectious disease. The percentage of patients who had a serious infectious disease was 40% among those with SUDs, compared with only 11% among those without SUDs. After adjusting for age and sex, the odds of having a serious infectious disease was 3.52 times greater for those with SUDs compared with those without (odds ratio [95% confidence interval], 4.52 [1.48-13.79], n = .008). Our findings suggest that home healthcare patients with a VAD and a documented SUD diagnosis may have an increased risk of having a concurrent serious infectious disease. Therefore, patients with an SUD and a VAD would need more attention from home healthcare providers to prevent a serious infectious disease. Further research is suggested on modalities of care for individuals with an SUD and VAD to reduce the incidence of infectious diseases so that care can be delivered safely and efficiently in a home healthcare setting.

Evaluation of Bundled Interventions for Patients With Opioid Use Disorder Experiencing Homelessness Receiving Extended Antibiotics for Severe Infection

Hospitalizations for serious infections in patients with opioid use disorder (OUD) experiencing homelessness are common. Patients receiving 4 interventions (infectious disease consultation, addiction consultation, case management, and medications for OUD [MOUD]) had higher odds of clinical cure (unadjusted odds ratio [OR], 3.15; P = .03; adjusted OR, 3.03; P = .049) and successful retention in addiction care at 30 days (unadjusted OR, 5.46; P = .01; adjusted OR, 6.36; P = .003).

Applying the Infectious Diseases Literature to People who Inject Drugs

People who inject drugs (PWID) presenting with injection drug use-associated infections are an understudied population excluded from most prospective infectious disease (ID) clinical trials. Careful application of the existing ID literature to PWID must consider their unique medical, psychological, and social challenges. Identification and treatment of the underlying substance use disorder are key underpinnings to any successful ID intervention.

Soft Tissue, Bone, and Joint Infections in People Who Inject Drugs

Infections are a common complication among people who inject drugs (PWID). Skin and soft tissue infections (SSTI) as well as bone and joint infections comprise a significant source of morbidity and mortality among this population. The appropriate recognition and management of these infections are critical for providers, as is familiarity with harm-reduction strategies. This review provides an overview of the presentation and management of SSTI and bone and joint infections among PWID, as well as key prevention measures that providers can take.

Outpatient Antimicrobial Treatment for People Who Inject Drugs

This article reviews the changing epidemiology of infections associated with injection drug use, perceived barriers to care, features of successful programs for outpatient antimicrobial treatment, models of shared decision making at the time of discharge, and linkage to preventative care after antimicrobial completion. In the search for patient-centered care associated with a rising substance use epidemic, one must continue to strive for novel collaborative approaches to ensure that each person is treated in the best way possible to successfully complete antimicrobial therapy, and then linked to a path of lifelong health care.

A qualitative assessment of discharge against medical advice among patients hospitalized for injection-related bacterial infections in West Virginia

BACKGROUND

The incidence of infective endocarditis (IE) and other systemic bacterial infections is increasing, and people who inject drugs (PWID) have higher rates of discharge against medical advice (AMA) for these infections than patients whose infections are not injection-related. In this study, we characterize factors that contribute to AMA hospital discharge among PWID.

METHODS

We conducted qualitative interviews with twenty PWID hospitalized with serious injection-related bacterial infections in West Virginia. Participants completed a brief survey and in-depth qualitative interview. Interviews were recorded and transcribed verbatim and analyzed using a codebook developed based on deductive and inductive thematic analysis. We also conducted medical records abstraction and used descriptive statistics to summarize medical and survey data.

RESULTS

Average age was 34 years, 55% were female, 95% identified as white, and 75% had a primary diagnosis of IE. Drugs injected prior to hospitalization were methamphetamine (60%), prescription opioids (38%), and/or heroin/fentanyl (25%). Participants cited multiple contributors to AMA discharge including negative interactions with hospital staff that they perceived as stigmatizing, including being searched or monitored for illicit drug use; inadequate management of pain and withdrawal; boredom and confinement during lengthy hospitalizations; and isolation from family and other social supports.

CONCLUSION

We identified multiple factors contributing to AMA discharge that are amenable to intervention. Given the significant morbidity, mortality, and financial costs associated with hospitalizing PWID for serious injection-related bacterial infections, hospitals should be highly motivated to develop and test interventions designed to improve outcomes among these patients.

Feasibility and Safety of Outpatient Parenteral Antimicrobial Therapy in Conjunction With Addiction Treatment for People Who Inject Drugs

BACKGROUND

Research is limited on combining outpatient parenteral antimicrobial therapy (OPAT) with addiction treatment for people who inject drugs (PWID) with serious infections.

METHODS

This is a retrospective study of PWID (n = 68) requiring intravenous antibiotics evaluated for suitability for our OPAT program with concurrent addiction treatment.

RESULTS

Most common infections were bacteremia and/or endocarditis (73.5%), bone and/or joint infections (32.4%), and epidural abscess (22.1%). Of the 20 patients (29.4%) who qualified, 100.0% completed the course of antibiotics, 30.0% experienced a 30-day readmission, and 15.0% relapsed. No overdoses, deaths, or peripherally inserted central catheter-line complications were reported.

CONCLUSIONS

Outpatient parenteral antimicrobial therapy with addiction treatment may be feasible and safe for PWID with serious infections.

Low Use of Outpatient Parenteral Antimicrobial Therapy for Drug Use-Associated Infective Endocarditis in an Urban Hospital System

Background

The opioid crisis in the United States has led to increasing hospitalizations for drug use-associated infective endocarditis (DUA-IE). Outpatient parenteral antimicrobial therapy (OPAT), the preferred modality for intravenous antibiotics for infective endocarditis, has demonstrated similar outcomes among patients with DUA-IE versus non-DUA-IE, but current studies suffer selection bias. The utilization of OPAT for DUA-IE more generally is not well studied.

Methods

This retrospective cohort study compared OPAT use for DUA-IE versus non-DUA-IE in adults hospitalized between January 1, 2015 and September 1, 2019 at 3 urban hospitals. We used multivariable regression analysis to assess the association between DUA-IE and discharge with OPAT, adjusting for clinically significant covariables.

Results

The cohort included 518 patients (126 DUA-IE, 392 non-DUA-IE). Compared to those with non-DUA-IE, DUA-IE patients were younger (53.0 vs 68.2 years, P < .001) and more commonly undomiciled (9.5% vs 0.3%, P < .01). Patients with DUA-IE had a significantly lower odds of discharge with OPAT than non-DUA-IE patients (adjusted odds ratio [aOR] = 0.20; 95% confidence interval [CI], 0.10–0.39). Odds of discharge with OPAT remained lower for patients with DUA-IE after excluding undomiciled patients (aOR = 0.22; 95% CI, 0.11–0.43) and those with patient-directed discharges (aOR = 0.27; 95% CI, 0.14–0.52).

Conclusions

Significantly fewer patients with DUA-IE were discharged with OPAT compared to those with non-DUA-IE, and undomiciled patients or patient-directed discharges did not fully account for this difference. Efforts to increase OPAT utilization among patients with DUA-IE could have important benefits for patients and the healthcare system.

Impact of medications for opioid use disorder among persons hospitalized for drug use-associated skin and soft tissue infections

BACKGROUND

Skin and soft tissue infections (SSTI) are common complications of injection drug use. We aimed to determine if rehospitalization and recurrent SSTI differ among persons with opioid use disorder (OUD) hospitalized for SSTI who are initiated on MOUD within 30 days of discharge and those who are not.

METHODS

We performed a retrospective analysis of commercially insured adults aged 18 years and older in the U.S. with OUD and hospitalization for injection-related SSTI from 2010-2017. The primary exposure was initiation of MOUD in the 30 days following hospitalization for SSTI. The primary outcomes included 30-day and 1-year 1) all-cause rehospitalization and 2) recurrent SSTI. We calculated the incidence rates for the two groups: MOUD group and no MOUD group for the primary outcomes. We developed Cox models to determine if rehospitalization and recurrent SSTI differ between the two groups.

RESULTS

Only 5.5 % (357/6538) of people received MOUD in the month following their index SSTI hospitalization. 30-day rehospitalization incidence was higher in the MOUD group compared to no MOUD (35.9 vs 27.5 per 100 person-30 days) and one-year SSTI recurrence was lower (10.3 vs 18.7 per 100 person-years). In multivariable modeling, the MOUD group remained at significantly higher risk of 30-day rehospitalization compared to the no MOUD group and at lower risk for one-year SSTI recurrence.

CONCLUSIONS

MOUD receipt following SSTI hospitalization decreases risk of recurrent SSTI among persons with OUD. Further expansion of these in-hospital services could provide an effective tool in the U.S. response to the opioid epidemic.

New Answers for Old Questions in the Treatment of Severe Infections from Injection Drug Use

Hospitalists are increasingly responsible for the management of infectious consequences of opioid use disorder (OUD), including increasing rates of hospitalization for injection drug use (IDU)-associated infective endocarditis, osteomyelitis, and soft tissue infections. Management of IDU-associated infections poses unique challenges: symptoms of the underlying addiction can interfere with care plans, patients often have difficult psychosocial circumstances in addition to their addiction, and they are often stigmatized by the healthcare system. Although there are few randomized trial data to support one particular approach to management, the literature suggests that successful treatment of IDU-associated infections requires appropriate antimicrobial and surgical interventions in addition to acknowledgment and treatment of the underlying OUD. In this narrative review, the best available evidence is used to answer several of the most commonly encountered questions in the management of IDU-associated infections. These data are used to develop a framework for hospitalists to approach the care of patients with IDU-associated infections.

Federal and State Action Needed to End the Infectious Complications of Illicit Drug Use in the United States: IDSA and HIVMA's Advocacy Agenda

In response to the opioid crisis, IDSA and HIVMA established a working group to drive an evidence- and human rights-based response to illicit drug use and associated infectious diseases. Infectious diseases and HIV physicians have an opportunity to intervene, addressing both conditions. IDSA and HIVMA have developed a policy agenda highlighting evidence-based practices that need further dissemination. This paper reviews (1) programs most relevant to infectious diseases in the 2018 SUPPORT Act; (2) opportunities offered by the "End the HIV Epidemic" initiative; and (3) policy changes necessary to affect the trajectory of the opioid epidemic and associated infections. Issues addressed include leveraging harm reduction tools and improving integrated prevention and treatment services for the infectious diseases and substance use disorder care continuum. By strengthening collaborations between infectious diseases and addiction specialists, including increasing training in substance use disorder treatment among infectious diseases and addiction specialists, we can decrease morbidity and mortality associated with these overlapping epidemics.

Infective Endocarditis in Persons Who Use Drugs: Epidemiology, Current Management, and Emerging Treatments

Infective endocarditis associated with injection drug use (IDU-IE) is markedly increasing in the United States and Canada. Long-term outcomes are dismal and stem from insufficient substance use disorder treatment. In this review, we summarize the principles of antimicrobial and surgical management for infective endocarditis associated with injection drug use. We discuss approaches to opioid use disorder care and harm reduction in the inpatient setting and review opportunities to address preventable infections among persons injecting drugs. We highlight barriers to implementing optimal treatment and consider novel approaches that may reshape infective endocarditis associated with injection drug use treatment in coming years.

Risk of New Bloodstream Infections and Mortality Among People Who Inject Drugs With Infective Endocarditis

IMPORTANCE

People who inject drugs (PWID) who are being treated for infective endocarditis remain at risk of new bloodstream infections (BSIs) due to ongoing intravenous drug use (IVDU).

OBJECTIVES

To characterize new BSIs in PWID receiving treatment for infective endocarditis, to determine the clinical factors associated with their development, and to determine whether new BSIs and treatment setting are associated with mortality.

DESIGN, SETTING, AND PARTICIPANTS

This retrospective cohort study was performed at 3 tertiary care hospitals in London, Ontario, Canada, from April 1, 2007, to March 31, 2018. Participants included a consecutive sample of all PWID 18 years or older admitted with infective endocarditis. Data were analyzed from April 1, 2007, to June 29, 2018.

MAIN OUTCOMES AND MEASURES

New BSIs and factors associated with their development, treatment setting of infective endocarditis episodes (ie, inpatient vs outpatient), and 90-day mortality.

RESULTS

The analysis identified 420 unique episodes of infective endocarditis in 309 PWID (mean [SD] patient age, 35.7 [9.7] years; 213 episodes [50.7%] involving male patients), with 82 (19.5%) complicated by new BSIs. There were 138 independent new BSIs, of which 68 (49.3%) were polymicrobial and 266 were unique isolates. Aerobic gram-negative bacilli (143 of 266 [53.8%]) and Candida species (75 of 266 [28.2%]) were the most common microorganisms. Ongoing inpatient IVDU was documented by a physician in 194 infective endocarditis episodes (46.2%), and 127 of these (65.5%) were confirmed by urine toxicology results. Multivariable time-dependent Cox regression demonstrated that previous infective endocarditis (hazard ratio [HR], 1.89; 95% CI, 1.20-2.98), inpatient treatment (HR, 4.49; 95% CI, 2.30-8.76), and physician-documented inpatient IVDU (HR, 5.07; 95% CI, 2.68-9.60) were associated with a significantly higher rate of new BSIs, whereas inpatient addiction treatment was associated with a significantly lower rate (HR, 0.53; 95% CI, 0.32-0.88). New BSIs were not significantly associated with 90-day mortality (HR, 1.76; 95% CI, 0.78-4.02); significant factors associated with mortality included inpatient infective endocarditis treatment (HR, 3.39; 95% CI, 1.53-7.53), intensive care unit admission (HR, 9.51; 95% CI, 4.91-18.42), and methicillin-resistant Staphylococcus aureus infective endocarditis (HR, 1.77; 95% CI, 1.03-3.03), whereas right-sided infective endocarditis was associated with a significantly lower mortality rate (HR, 0.41; 95% CI, 0.25-0.67).

CONCLUSIONS AND RELEVANCE

In this study, new BSIs were common in PWID receiving parenteral treatment for infective endocarditis. Discharging patients to outpatient treatment was not associated with an increase in new BSI incidence or mortality; carefully selected PWID may therefore be considered for such treatment.

Home-Based Outpatient Parenteral Antibiotic Therapy at an Urban Safety Net Hospital: Comparing Outcomes in Persons With and Without Noninjection Drug Use

As stimulant use and infections among persons using drugs rise nationally, evidence remains limited on how best to deliver outpatient parenteral antimicrobial therapy (OPAT) to persons using noninjection drugs. In an urban safety net population including persons using noninjection drugs, home-based OPAT completion rates were similarly high as those of non-drug-using individuals.