Publications by authors named "Alan Gross"

Background: Ceftolozane-tazobactam and ceftazidime-avibactam are preferred treatment options for multidrug-resistant Pseudomonas aeruginosa infections; however, real-world comparative effectiveness studies are scarce. Pharmacokinetic and pharmacodynamic differences between the agents might affect clinical response rates. We aimed to compare the effectiveness of ceftolozane-tazobactam and ceftazidime-avibactam for treatment of invasive multidrug-resistant P aeruginosa infections.

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Background: The purpose of this study was to compare the efficacy and safety of intravenous (IV) versus oral (PO) stepdown therapy for uncomplicated streptococcal bacteremia.

Methods: This multicenter, retrospective study included adult patients with uncomplicated streptococcal bacteremia between 1 July 2019 and 1 July 2022. Patients who received IV therapy for the full treatment course were compared to patients who transitioned to PO therapy after initial IV therapy.

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Objectives: While factors contributing to dental antibiotic overprescribing have previously been described, previous work has lacked any theoretical behavior change framework that could guide future intervention development. The purpose of this study was to use an evidence-based conceptual model to identify barriers and facilitators of appropriate antibiotic prescribing by dentists as a guide for future interventions aimed at modifying antibiotic prescribing.

Methods: Semi-structured interviews were conducted with dentists from the National Dental Practice Based Research Network (PBRN) exploring patient and practice factors perceived to impact antibiotic prescribing.

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Background: Urinary tract infections (UTIs) are commonly treated in the emergency department (ED), and unfortunately, resistance to first-line agents is increasing.

Objectives: To characterize treatment of pyelonephritis in a nationally representative sample of ED patients and to identify patient- and treatment-specific factors associated with receiving initial inactive antibiotics.

Methods: We conducted a multicentre, observational cohort study utilizing the Emergency Medicine PHARMacotherapy Research NETwork (EMPHARM-NET), comprising 15 geographically diverse US EDs.

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A structured, nurse-driven outpatient parenteral antimicrobial therapy (OPAT) program within an academic healthcare system was associated with reduced odds of 60-day unplanned OPAT readmissions and costs after hospital discharge. These findings may facilitate justifying additional resources for OPAT programs to improve care while decreasing costs.

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Objectives: Dentists prescribe 10% of all outpatient antibiotics in the United States and are the top specialty prescriber. Data on current antibiotic prescribing trends are scarce. Therefore, we evaluated trends in antibiotic prescribing rates by dentists, and we further assessed whether these trends differed by agent, specialty, and by patient characteristics.

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Objective: To characterize the diagnosis and management of urinary tract infection (UTI) in pediatric patients at the University of Illinois Hospital and Health Sciences System (UIH), with an emphasis on antibiotic prescribing; in addition, to characterize pediatric uropathogen patterns to help guide future empiric therapy choices.

Methods: We used a retrospective, descriptive study of pediatric patients ages 2 months to ≤18 years seen at the UIH emergency department or clinic from January 1, 2014, to August 31, 2018, with ICD-9 or ICD-10 discharge diagnosis of UTI. Data collected included presenting symptoms, urinalysis, details of antibiotic regimens, urine culture, and susceptibility results.

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Article Synopsis
  • The study aimed to assess whether a structured outpatient parenteral antimicrobial therapy (OPAT) program, supervised by an infectious disease physician and managed by an OPAT nurse, reduced hospital readmission rates and complications.
  • A total of 428 patients requiring intravenous antibiotics after hospital discharge were analyzed, comparing outcomes before and after the implementation of this structured program.
  • Results showed a significant reduction in hospital readmissions related to OPAT (17.8% to 7%) and an increase in clinical cure rates (from 69.8% to 94.9%) following the program's implementation.
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Background: Limited studies evaluate the outcome of intravenous antibiotics to oral transition in Gram-negative bloodstream infection (GN-BSI), particularly GN-BSI originating outside the urinary tract. This study aimed to evaluate treatment success in patients with GN-BSI treated with either intravenous therapy or intravenous to oral transition and to identify factors associated with treatment failure in those undergoing intravenous to oral transition.

Methods: A retrospective cohort study was conducted at King Chulalongkorn Memorial Hospital, Thailand.

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Objectives: To identify characteristics of US health systems and end users that report antimicrobial use and resistance (AUR) data, to determine how NHSN AUR data are used by hospitals and health systems and end users, and to identify barriers to AUR reporting.

Design: An anonymous survey was sent to Society of Infectious Diseases Pharmacists (SIDP) and Society for Healthcare Epidemiology of America (SHEA) Research Network members.

Methods: Data were collected via Survey Monkey from January 21 to February 21, 2020.

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This work sought to assess relationships between sexually aggressive behavior occurring through the use of technology and social media, perceived social norms of sexually aggressive behavior, and face-to-face sexual aggression and coercion. Participants were 663 undergraduate students (73.1% Female).

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Background: Uropathogen resistance, fluoroquinolone-resistance (FQR), and extended spectrum beta-lactamase (ESBL), has been observed to be emerging worldwide with prevalences above recommended thresholds for routine empirical treatment. The primary aim of our study was to determine the prevalence of FQR from a geographically diverse sample of United States emergency departments (EDs).

Methods: We conducted a multi-center, observational cohort study using a network of 15 geographically diverse US EDs.

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Introduction: The objective of this study is to identify county-level characteristics that may be high-impact targets for opioid and antibiotic interventions to improve dental prescribing.

Methods: Prescriptions during 2012-2017 were extracted from the IQVIA Longitudinal Prescription database. Primary outcomes were yearly county-level antibiotic and opioid prescribing rates.

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Background: Grading of Recommendations Assessment, Development, and Evaluation (GRADE) is a systematic approach to grading strength of recommendation (SOR) and quality of evidence (QOE) for guideline recommendations. We aimed to assess the relationship between SOR and QOE in current Infectious Diseases Society of America (IDSA) guidelines.

Methods: In this cross-sectional analysis, we analyzed the frequency of SOR-QOE pairings, including discordance (defined as strong SOR based on expert opinion, very low, or low QOE) for GRADEd recommendations in IDSA guidelines published since 2010.

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Introduction: Infectious complications can be a major cause of morbidity and mortality in solid organ transplant recipients. Preservation fluid is necessary to maintain organ viability but may serve as a vector or infection. The utility of screening preservation fluid routinely for microbial growth and the impact of culture-positive preservation fluid is controversial.

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SHEA endorses adhering to the recommendations by the CDC and ACIP for immunizations of all children and adults. All persons providing clinical care should be familiar with these recommendations and should routinely assess immunization compliance of their patients and strongly recommend all routine immunizations to patients. All healthcare personnel (HCP) should be immunized against vaccine-preventable diseases as recommended by the CDC/ACIP (unless immunity is demonstrated by another recommended method).

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Importance: Antibiotics are recommended before certain dental procedures in patients with select comorbidities to prevent serious distant site infections.

Objective: To assess the appropriateness of antibiotic prophylaxis before dental procedures using Truven, a national integrated health claims database.

Design, Setting, And Participants: Retrospective cohort study.

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Background: Most antibiotic use in the United States occurs in the outpatient setting, and 10% of these prescriptions are generated by dentists. The development of comprehensive antibiotic stewardship programs (ASPs) in the dental setting is nascent, and therefore we describe the implementation of a dental ASP.

Methods: A collaborative team of dentist, pharmacist, and physician leaders conducted a baseline needs assessment and literature evaluation to identify opportunities to improve antibiotic prescribing by dentists within Illinois' largest oral health care provider for Medicaid recipients.

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To compare oral metronidazole and vancomycin for the treatment of mild-to-moderate infection (mmCDI). A MEDLINE literature search (inception to November 2018) was performed using the search terms , and . Additional references were identified from a review of literature citations.

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The manufacturer-recommended aztreonam dosing for patients with creatinine clearance values of <10 ml/min/1.73 m is complex. It is not known whether simpler posthemodialysis dosing administered once daily or thrice weekly can reliably achieve pharmacodynamic goals.

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