Publications by authors named "Tyrone G Harrison"

Background: Optimised use of kidney function information might improve cardiac risk prediction in noncardiac surgery.

Methods: In 35,815 patients from the VISION cohort study and 9219 patients from the POISE-2 trial who were ≥45 yr old and underwent nonurgent inpatient noncardiac surgery, we examined (by age and sex) the association between continuous nonlinear preoperative estimated glomerular filtration rate (eGFR) and the composite of myocardial injury after noncardiac surgery, nonfatal cardiac arrest, or death owing to a cardiac cause within 30 days after surgery. We estimated contributions of predictive information, C-statistic, and net benefit from eGFR and other common patient and surgical characteristics to large multivariable models.

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Importance: People with kidney failure have a high risk of death and poor quality of life. Mortality risk prediction models may help them decide which form of treatment they prefer.

Objective: To systematically review the quality of existing mortality prediction models for people with kidney failure and assess whether they can be applied in clinical practice.

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Rationale & Objective: Cilastatin is an inhibitor of drug metabolism in the proximal tubule that demonstrates nephroprotective effects in animals. It has been used in humans in combination with the antibiotic imipenem to block imipenem's renal metabolism. This systematic review and meta-analysis evaluated the nephroprotective effects of cilastatin in humans.

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Purpose Of Review: Diabetes is the most common cause of kidney disease in individuals that receive a kidney transplant, and those without pre-existing diabetes are at greater risk of developing diabetes following kidney transplant. A class of diabetes treatment medications called glucagon-like peptide-1 receptor agonists (GLP-1RA) has seen recent widespread use for people with diabetes or obesity, with efficacy for improved glycemic control, weight loss, and reduced risk of cardiovascular events. Given these benefits, and indications for use that often co-occur in kidney transplant recipients, use of GLP-1RAs warrants consideration in this population.

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Background And Objective: Transgender and gender-diverse (TGD) persons experience health inequities compared to their cisgender peers, which is in part related to limited evidence informing their care. Thus, we aimed to describe the literature informing care provision of TGD individuals.

Data Source, Eligibility Criteria, And Synthesis Methods: Literature cited by the World Professional Association of Transgender Health Standards of Care Version 8 was reviewed.

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Rationale & Objective: Formalized peer support is a promising approach for addressing the emotional and practical needs of people living with chronic kidney disease (CKD). We systematically identified and summarized peer support interventions studied in individuals with CKD with or without kidney replacement therapy (KRT).

Sources Of Evidence: Search of electronic databases and grey literature sources in March 2023.

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Key Points: For AKI prevention trial recruitment, patients prioritized technology enabled prescreening and involvement of family members in the consent process. For trial intervention delivery, participants prioritized measures to facilitate ease of trial intervention administration and return visits. For AKI prevention trial outcomes, patient participants identified effects on kidney-related and other clinical outcomes as top priorities.

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Objective: The objective of this work was to estimate the association between surgeon sex with surgical postponements or cancellations.

Summary Background Data: Female surgeons receive lower hourly, per patient, and total compensation than their male colleagues. Bias in the decision to postpone or cancel surgical cases may contribute to compensation inequality, since this results in unpaid surgeon time.

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Purpose Of Review: Personalized approaches to care are increasingly common in clinical nephrology. Although risk prediction models are developed to estimate the risk of kidney-disease related outcomes, they infrequently consider the priorities of patients they are designed to help.

Recent Findings: This review discusses certain steps in risk prediction tool development where patients and their priorities can be incorporated.

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Delayed graft function (DGF) is a common post-operative complication with potential long-term sequelae for many kidney transplant recipients, and hemodynamic factors and fluid status play a role. Fixed perioperative fluid infusions are the standard of care, but more recent evidence in the non-transplant population has suggested benefit with goal-directed fluid strategies based on hemodynamic targets. We searched MEDLINE, EMBASE, Cochrane Controlled Trials Registry and Google Scholar through December 2022 for randomized controlled trials comparing risk of DGF between goal-directed and conventional fluid therapy in adults receiving a living or deceased donor kidney transplant.

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Background: The kidney failure risk equation (KFRE) can be used to predict progression to end-stage kidney disease in a clinical setting.

Objective: Evaluate implementation of a formalized risk-based approach in nephrologists' outpatient clinics and multidisciplinary chronic kidney disease (CKD) clinics to determine candidacy for multidisciplinary care, and the impact of CKD care selection on clinical outcomes.

Design: Population-based descriptive cohort study.

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Background: Despite efforts to provide evidence-based care for people living with kidney disease, health care provider goals and priorities are often misaligned with those of individuals with lived experience of disease. Coupled with competing interests of time, resources, and an abundance of suitable guideline topics, identifying and prioritizing areas of focus for the Canadian nephrology community with a patient-oriented perspective is necessary and important. Similar priority-setting exercises have been undertaken to establish research priorities for kidney disease and to standardize outcomes for kidney disease research and clinical care; however, research priorities are distinct from priorities for guideline development.

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Rationale & Objective: Survivors of acute kidney injury (AKI) are at high risk of adverse outcomes. Monitoring of kidney function, screening for proteinuria, use of statins and renin-angiotensin-aldosterone system (RAAS) inhibitors, and nephrology follow-up among survivors have not been fully characterized. We examined these processes of care after discharge in survivors of hospitalized AKI.

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Measurement of proteinuria is critical for diagnosing and monitoring kidney disease. A variety of measures are available to clinicians and can identify all urinary proteins (proteinuria) or urine albumin alone (albuminuria). Proteinuria and albuminuria can be measured in either a random urine sample or a timed urine collection (often over 24 hours).

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Rationale & Objective: To evaluate follow-up care of critically ill patients with acute kidney injury (AKI).

Study Design: Retrospective cohort study.

Setting & Participants: Patients admitted to the intensive care unit (ICU) with AKI in Alberta, Canada from 2005 to 2018, who survived to discharge without kidney replacement therapy or estimated glomerular filtration rate <15 mL/min/1.

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Article Synopsis
  • - The study investigated the effects of a standardized protocol for administering recombinant tissue plasminogen activator (rt-PA) on catheter function in patients undergoing hemodialysis in Calgary, Alberta.
  • - After implementing the protocol over six months, findings showed a significant reduction in rt-PA usage and catheter interventions compared to the period before the protocol, without affecting hospitalization rates or dialysis efficacy.
  • - Limitations include a small sample size and the research being conducted at a single dialysis center, suggesting the need for broader studies to confirm the results.
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Background: Choosing Wisely Canada (CWC) recommends avoiding noninvasive advanced cardiac testing (e.g., exercise stress testing [EST], echocardiography and myocardial perfusion imaging [MPI]) for preoperative assessment in patients scheduled to undergo low-risk noncardiac surgery.

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Background: People with kidney failure often require surgery and experience worse postoperative outcomes compared to the general population, but existing risk prediction tools have excluded those with kidney failure during development or exhibit poor performance. Our objective was to derive, internally validate, and estimate the clinical utility of risk prediction models for people with kidney failure undergoing non-cardiac surgery.

Design, Setting, Participants, And Measures: This study involved derivation and internal validation of prognostic risk prediction models using a retrospective, population-based cohort.

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Background: Historical reports suggest that infants born small for gestational age (SGA) are at increased risk for high blood pressure (BP) at older ages after adjustment for later age body size. Such adjustment may be inappropriate since adiposity is a known cause of cardiovascular and metabolic disease.

Objectives: To assess the association between SGA births and later BP among preterm births, considering potential background confounders and over-adjustment for later body size.

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Objective: We evaluated implementation and clinical outcomes of a perioperative glycemic management pathway in gynecologic oncology.

Methods: Interrupted time-series analysis was used to compare process, balancing and outcome measures and clinical outcomes from 18 months preimplementation to 18 months postimplementation.

Results: Compared with in the preimplementation period, the proportion of patients who underwent preoperative screening with glycated hemoglobin in the postimplementation period increased by 11.

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Background: Chest pain is a common cause for emergency department (ED) presentations. After myocardial infarction (MI) has been ruled out by means of electrocardiography and troponin testing, decisions around anatomic or functional testing may be informed by clinical risk scores. We conducted a systematic review to synthesize evidence of the prognostic performance of chest pain risk scores among ED patients who have had MI ruled out by means of a high-sensitivity troponin assay.

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