Publications by authors named "Valerie Ma"

English speakers use probabilistic phrases such as likely to communicate information about the probability or likelihood of events. Communication is successful to the extent that the listener grasps what the speaker means to convey and, if communication is successful, individuals can potentially coordinate their actions based on shared knowledge about uncertainty. We first assessed human ability to estimate the probability and the ambiguity (imprecision) of twenty-three probabilistic phrases in a coordination game in two different contexts, investment advice and medical advice.

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Background: Creation and maintenance of dialysis vascular access (VA) is a major component of healthcare resource utilization and cost for patients newly started on hemodialysis (HD). Different VA format arises due to patient acceptance of anticipatory care versus late preparation, and clinical characteristics. This study reviews the clinical journey and resource utilization required for different VA formats in the first year of HD.

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Background: Patients with acute kidney injury needing prolonged renal replacement therapy (AKI-RRT) may benefit from a structured care process in form of an AKI transitional care program (ATCP), to facilitate RRT weaning and recovery.

Methods: We examined outcomes following ATCP implementation in adults with AKI-RRT from a tertiary institution (versus pre-ATCP controls), including mortality, cumulative hospital days, and renal function over one year; RRT and haemodialysis catheter days in initial 90 days.

Results: We studied 89 patients with age 62 ( ± 15) years.

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Background: Intravenous maintenance fluid (IMF) tonicity and composition influence plasma electrolyte balance.

Objective: To determine if hypotonic IMF therapy contributes to post-surgical hyponatremia.

Setting: Single-center tertiary institution.

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Article Synopsis
  • The study developed a risk prediction model for first-year mortality (FYM) in dialysis patients with end-stage renal disease by analyzing patient data from a single center between 2005-2010.
  • A total of 983 patients were analyzed, revealing that FYM was 17%, with significant predictors including low left ventricular ejection fraction, age over 70, specific serum levels, and vascular diseases.
  • The risk factors were summarized into an acronym, UREA5, with scores assigned to each factor, showing that higher scores corresponded to increasing FYM percentages post-dialysis.
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Introduction: Clinical practice guidelines recommend empiric antibiotic therapy for suspected tunnelled haemodialysis catheter-related infections (CRI), and the choice of antibiotics should be adjusted according to the local microbiological profile and antimicrobial sensitivities. We aim to describe the microbiology, antibiotic sensitivities, and clinical outcomes of CRI with tunnelled haemodialysis catheters in a multi-ethnic South-East Asian population.

Methods: Using a prospective vascular access registry, we identified 99 patients who had catheters removed for suspected or confirmed CRI (50.

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Introduction: The increasing prevalence of end-stage renal disease (ESRD) is an important public health issue due to the high costs of kidney replacement therapies. We examined the impact of ethnicity and other factors in ESRD management and hospitalisation in a multiracial Asian population in the fi rst year after diagnosis.

Materials And Methods: We analysed a prospectively collected database of 168 new ESRD patients from the National University Hospital, Singapore (NUH) in 2005.

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