Publications by authors named "Langford B"

Background: Shorter courses of antibiotic therapy are increasingly recommended to reduce antibiotic exposure. However quantifying the real-world impact of duration of therapy is hindered by bias common in observational studies. We aimed to evaluate the harms and benefits of longer versus shorter duration of therapy in older adults.

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Background: Antimicrobial stewardship programs (ASPs) aim to mitigate antimicrobial resistance (AMR) by optimizing antibiotic use including reducing unnecessary broad-spectrum therapy. This study evaluates the impact of ASP funding and resources on the use of broad-spectrum antibiotics in Ontario hospitals.

Methods: We conducted a cross-sectional study of antimicrobial use (AMU) across 63 Ontario hospitals from April 2020 to March 2023.

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Background: Antimicrobial-resistant (AMR) pathogens represent an ongoing global health burden. Colonization is often a prerequisite for infection, but the risk of infection after AMR colonization is not well understood. Using population-level health administrative data, we sought to investigate the risk of infection with the same AMR organism after detection of colonization.

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Objective: To explore the role of local public health organisations in antimicrobial stewardship (AMS) and antimicrobial resistance (AMR) surveillance.

Methods: A scoping review was conducted. Peer-reviewed and grey literature from countries within the organisation for economic co-operation and development was searched between 1999 and 2023 using the concepts of local public health, AMR and AMS.

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Background: To investigate the prevalence of concomitant bacterial infection across common viral infections.

Methods: This population-based cohort study included patients infected with influenza A and B (FLUA, FLUB) and respiratory syncytial virus (RSV) in Ontario between 2017 and 2019 and patients with SARS-CoV-2 between 2020 and 2021. Specific bacteria present in concomitant infections were identified.

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The effects of air pollution on human and animal health, and on the functioning of terrestrial ecosystems, are wide-ranging. This potentially includes the disruption of valuable services provided by flying insects (e.g.

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Background: Three common strategies exist for managing the inflatable penile prosthesis reservoir during revision surgery: the original reservoir can be (a) removed, (b) deactivated and left in situ, sometimes referred to as "drain and retain" (DR), or (c) validated and reconnected to new cylinders, which we have termed "reservoir recycling" (RR).

Aim: To compare the efficacy and safety of the RR approach to penile prosthesis revision against DR and the recommended approach of complete device removal and replacement.

Methods: A retrospective chart review of our single-surgeon inflatable penile prosthesis database between 2007 and 2022 was performed, identifying revision surgeries.

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Background: Unnecessary antibiotic prescriptions in primary care are common and contribute to antimicrobial resistance in the population. Audit and feedback (A&F) on antibiotic prescribing to primary care can improve the appropriateness of antibiotic prescribing, but the optimal approach is uncertain. We performed two pragmatic randomized controlled trials of different approaches to audit and feedback.

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Article Synopsis
  • * Conducted in a Canadian rehabilitation hospital, the research utilized a quasi-experimental design to analyze the impact of the BLADDER score on urine culturing rates, antibiotic usage, and patient outcomes 18 months before and 16 months after the intervention.
  • * Results showed a significant decline in both urine culturing and antibiotic prescribing rates post-intervention, without adversely affecting patient length of stay, transfers, or mortality, suggesting the BLADDER score is an effective tool for improving antimicrobial stewardship. *
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  • * Out of 982 IPPs placed, only 49 used AMS™ 700 Controlled Expansion Restricted (CXR) cylinders, mainly due to previous infections and ischemic priapism, with a median corporal length of 19 cm.
  • * Post-operative complications were noted in 16.3% of patients, with a satisfaction rate of 73.5%, while primary dissatisfaction stemmed from perceived loss of penile length and girth.
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  • The study analyzed the risk factors and outcomes for patients with Gram-negative bloodstream infections (GN-BSI) who experience persistent bacteraemia, which is when bacteria remain in the bloodstream after initial treatment.
  • Out of 8807 hospitalized patients, 600 (6.8%) exhibited persistent bacteraemia, linked to factors like having a permanent catheter, antimicrobial resistance, ICU admission, and specific types of infections.
  • The research found that patients with persistent bacteraemia had significantly higher mortality rates within 30 days (17.2%) and 90 days (25.5%) compared to those without, suggesting the need for better risk assessment tools for these patients.
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  • The study aimed to determine if giving family physicians feedback on their antibiotic prescribing practices compared to their peers would help reduce unnecessary prescriptions, particularly for patients aged 65 and older.
  • It was a randomized controlled trial conducted among primary care physicians in Ontario, Canada, where eligible doctors either received feedback letters or were placed in a control group without feedback.
  • Results showed that, after six months, physicians who received feedback had a slightly lower mean antibiotic prescribing rate compared to the control group, indicating some effectiveness of the intervention in reducing unnecessary prescriptions.
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Objectives: Evidence-based prescribing is essential to optimize patient outcomes in cystitis. This requires knowledge of local antibiotic resistance rates. Diagnostic and Antimicrobial Stewardship (DASH) to Protect Antibiotics (https://dashuti.

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Objectives: Data supporting routine infectious diseases (ID) consultation in gram-negative bloodstream infection (GN-BSI) are limited. We evaluated the association between ID consultation and mortality in patients with GN-BSI in a retrospective population-wide cohort study in Ontario using linked health administrative databases.

Methods: Hospitalized adult patients with GN-BSI between April 2017 and December 2021 were included.

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The escalating threat of antimicrobial resistance (AMR) necessitates impactful, reproducible, and scalable antimicrobial stewardship strategies. This review addresses the critical need to enhance the quality of antimicrobial stewardship intervention research. We propose five considerations for authors planning and evaluating antimicrobial stewardship initiatives.

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Article Synopsis
  • A study investigated the effectiveness of follow-up blood cultures (FUBCs) on mortality rates in patients with Gram-negative bloodstream infections (GN-BSI) in Ontario, Canada, determining that their utility is controversial due to previous observational studies' limitations.
  • The analysis included over 34,000 hospitalized adults, revealing that 25.8% received FUBCs, with no significant difference in 30-day mortality rates between those who did and those who did not (10.1% vs. 8.9%).
  • Results also indicated that patients receiving FUBCs had longer hospital stays (11 days vs. 7 days) and fewer days alive outside the hospital, suggesting that while FUBCs
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Objective: To assess surgical success and patient-reported outcomes of perineal urethrostomy via midline approach.

Materials And Methods: Charts of patients undergoing primary perineal urethrostomy between May 2008 and June 2022 were reviewed. Background characteristics were assessed; success was defined as freedom from re-intervention.

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With the rapid advancement of artificial intelligence (AI), the field of infectious diseases (ID) faces both innovation and disruption. AI and its subfields including machine learning, deep learning, and large language models can support ID clinicians' decision making and streamline their workflow. AI models may help ensure earlier detection of disease, more personalized empiric treatment recommendations, and allocation of human resources to support higher-yield antimicrobial stewardship and infection prevention strategies.

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Background: Overuse of antimicrobials in residents of long-term care homes is common and can result in harm. Antimicrobial stewardship interventions are needed in the long-term care (LTC) homes setting to improve the appropriate use of antimicrobials. Previous literature has highlighted the importance of documenting antimicrobial indication as a strategy that contributes to improve antimicrobial use; however, there is a lack of evidence in LTC homes.

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Biogenic volatile organic compounds (bVOCs), synthesised by plants, are important mediators of ecological interactions that can also undergo a series of reactions in the atmosphere. Ground-level ozone is a secondary pollutant generated through sunlight-driven reactions between nitrogen oxides (NO) and VOCs. Its levels have increased since the industrial revolution and reactions involving ozone drive many chemical processes in the troposphere.

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Prolonged ischemic priapism presents a treatment challenge given the difficulty in achieving detumescence and effects on sexual function. To evaluate current practice patterns, an open, web-based multi-institutional survey querying surgeons' experience with and perceived efficacy of tunneling maneuvers (corporoglanular tunneling and penoscrotal decompression), as well as impressions of erectile recovery, was administered to members of societies specializing in male genital surgery. Following distribution, 141 responses were received.

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Background: Studies have demonstrated improved clinical outcomes with extended infusion (EI) piperacillin/tazobactam (TZP) compared to standard infusion (SI). However, there is less evidence on its benefits in noncritically-ill patients. Hospital-wide EI TZP was implemented at our site on February 21, 2012.

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Objective: To evaluate inter-physician variability and predictors of changes in antibiotic prescribing before (2019) and during (2020/2021) the coronavirus disease 2019 (COVID-19) pandemic.

Methods: We conducted a retrospective cohort analysis of physicians in Ontario, Canada prescribing oral antibiotics in the outpatient setting between January 1, 2019 and December 31, 2021 using the IQVIA Xponent data set. The primary outcome was the change in the number of antibiotic prescriptions between the prepandemic and pandemic period.

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