Publications by authors named "Emily G McDonald"

Introduction: Transition of care from hospital to primary care has been recognised globally as a high-risk scenario for older patients' safety by the WHO. Indeed, sub-optimal care transitions are associated with increased mortality, morbidity and adverse events.Improving communication through timely and accurate clinical information transfer has been identified as a key component of optimal care transitions.

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Objectives: Post-hoc analyses of the MERINO trial highlight the uncertainty associated with establishing piperacillin-tazobactam (PTZ) susceptibility in extended-spectrum beta-lactamase-producing Enterobacterales. Herein, we compare the concordance of susceptibility for PTZ among the VITEK 2, disc diffusion, and Etest with broth microdilution (BMD) as the reference standard.

Methods: Ninety-four consecutive ceftriaxone non-susceptible Escherichia coli and Klebsiella pneumoniae bloodstream isolates were identified from patients at three hospitals in Montréal, Québec.

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Background: Bloodstream infections are associated with substantial morbidity and mortality. Early, appropriate antibiotic therapy is important, but the duration of treatment is uncertain.

Methods: In a multicenter, noninferiority trial, we randomly assigned hospitalized patients (including patients in the intensive care unit [ICU]) who had bloodstream infection to receive antibiotic treatment for 7 days or 14 days.

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Article Synopsis
  • The diagnosis of Pneumocystis jirovecii pneumonia (PCP) is complicated due to the limitations of current diagnostic tests and the under-validated cut-off of 80pg/mL for the Fungitell BDG serum assay.
  • A systematic review and meta-analysis examined the effectiveness of the Fungitell BDG assay, involving 26 studies and over 5,000 patients to assess its diagnostic accuracy for PCP.
  • The findings suggest using a cut-off of <80pg/mL as a strong negative indicator for PCP, while >400pg/mL can provide a reliable indication of the disease, although sensitivity decreases at higher cut-off levels.
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Article Synopsis
  • Traditional clinical guidelines often mismatch the strength of recommendations with the quality of evidence, prompting the need for improvement in the field of urinary tract infections (UTIs).
  • The objective was to create a comprehensive guideline that aligns evidence and recommendations better, utilizing a systematic review involving 54 experts across 12 countries who analyzed 914 articles on various aspects of UTIs.
  • Only 6 out of 37 questions could be clearly recommended based on strong evidence, while the rest resulted in clinical reviews outlining the risks and benefits of existing approaches.
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Background: Older people with HIV (PWH) are at risk of polypharmacy (taking multiple medications). Most medications may be necessary and indicated to manage HIV (e.g.

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Background/rationale: Weekly cholecalciferol can replace daily supplementation to reduce pill burden in patients with complex medication regimens and hypovitaminosis D, but evidence supporting this switch is unclear.

Objective: We aimed to determine whether weekly cholecalciferol was superior to daily cholecalciferol to replete patients with hypovitaminosis D.

Methods: We conducted a systematic review of randomized controlled trials involving participants with baseline hypovitaminosis D (<30 ng/ml) comparing weekly versus daily cholecalciferol dosing and where serum cholecalciferol was measured within 120 days of starting treatment.

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Background: The performance and availability of invasive and non-invasive investigations for the diagnosis of Pneumocystis jirovecii pneumonia (PCP) vary across clinical settings. Estimating the pre-test probability of PCP is essential to the optimal selection and interpretation of diagnostic tests, such as the 1,3-β-D-glucan assay (BDG), for the prioritization of bronchoscopy, and to guide empiric treatment decisions. We aimed to develop a multivariable risk score to estimate the pre-test probability of PCP.

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Background: Potentially inappropriate medications (PIMs) are medications whereby the harms may outweigh the benefits for a given individual. Although overprescribed to older adults, their direct costs on the healthcare system are poorly described.

Methods: This was a cross-sectional study of the cost of PIMs for Canadians aged 65 and older, using adapted criteria from the American Geriatrics Society.

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Article Synopsis
  • Guidelines suggest using gentamicin alongside other treatments for Enterococcus faecalis infective endocarditis (EFIE) despite potential toxicity; this study aimed to evaluate the safety and effectiveness of gentamicin compared to ceftriaxone.* -
  • A systematic review and meta-analysis were conducted, analyzing 10 observational studies, which revealed that gentamicin had similar mortality and treatment failure rates to ceftriaxone but caused significantly more treatment discontinuations due to toxicity.* -
  • The findings indicate that ceftriaxone is likely as effective as gentamicin and less toxic, suggesting it may be a preferable option for EFIE treatment until more definitive randomized studies are available.*
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Introduction: Over the past decade, polypharmacy has increased dramatically. Measurable harms include falls, fractures, cognitive impairment, and death. The associated costs are massive and contribute substantially to low-value health care.

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Background: Quality of life (QoL) is an important outcome to capture in clinical trials evaluating deprescribing interventions.

Objective: We aimed to conduct a scoping review to examine how QoL has been measured in deprescribing trials among older people and identify potentially relevant QoL scales, to better inform QoL measurement in future deprescribing trials.

Methods: We searched MEDLINE, Embase, PsycINFO, the Cochrane Central Register of Controlled Trials, Google Scholar, Epistemonikos, ClinicalTrials.

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Rationale & Objective: Patients treated with dialysis are commonly prescribed multiple medications (polypharmacy), including some potentially inappropriate medications (PIMs). PIMs are associated with an increased risk of medication harm (eg, falls, fractures, hospitalization). Deprescribing is a solution that proposes to stop, reduce, or switch medications to a safer alternative.

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Background: Pneumocystis jirovecii pneumonia (PCP) is a common opportunistic infection among people living with HIV (PWH), particularly among new and untreated cases. Several regimens are available for the prophylaxis of PCP, including trimethoprim-sulfamethoxazole (TMP-SMX), dapsone-based regimens (DBRs), aerosolized pentamidine (AP), and atovaquone.

Objectives: To compare the efficacy and safety of PCP prophylaxis regimens in PWH by network meta-analysis.

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is a ubiquitous opportunistic fungus that can cause life-threatening pneumonia. People with HIV (PWH) who have low CD4 counts are one of the populations at the greatest risk of pneumonia (PCP). While guidelines have approached the diagnosis, prophylaxis, and management of PCP, the numerous studies of PCP in PWH are dominated by the 1980s and 1990s.

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Venetoclax is a small molecule inhibitor of BCL-2 used in the treatment of acute myelogenous leukemia (AML) and chronic lymphocytic leukemia (CLL). Recent postmarketing studies of ibrutinib, another small molecule inhibitor, suggested that these agents may predispose to opportunistic infections. We sought to systematically review the randomized controlled trial (RCT) evidence of venetoclax to assess whether it predisposes patients to infectious adverse events (IAEs) and neutropenia.

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