Publications by authors named "Mara McAdams-Demarco"

Central body fat distribution affects kidney function. Abdominal fat measurements using computed tomography (CT) may prove superior in assessing body composition-related kidney risk in living kidney donors. This retrospective cohort study including 550 kidney donors aimed to determine the association between CT-measured abdominal fat areas and kidney function before and after donor nephrectomy.

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  • There's a growing population of older adults with kidney disease, but there's not enough evidence to help improve their clinical care, prompting the KDARC to conduct a study on research priorities in geriatric nephrology.
  • The study used a modified Delphi approach involving clinicians and researchers in the US and Canada to gather and prioritize important research topics for better care of older adults with kidney issues.
  • Five key research priorities were identified: improving communication about treatment options, enhancing quality of life and symptom management, addressing frailty, tailoring therapies for older adults, and providing caregiver support, all underlined by the importance of health equity and patient-centered care.
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  • - The review highlights a knowledge gap regarding how neighborhood characteristics affect chronic kidney disease (CKD), especially identifying modifiable factors that can help in prevention strategies through interventions.
  • - Recent research primarily focuses on social aspects of neighborhoods, with initial studies on the built environment showing mixed results, particularly concerning food deserts and their risk for CKD.
  • - There is a call for further investigation using advanced study methods and diverse datasets to better understand the links between neighborhood factors and CKD, with the potential for utilizing electronic health records to support this research.
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The global incidence of thyroid cancer has increased over the past several decades. While this increase is partially due to increased detection, environmental pollutants have also emerged as a possible contributing factor. Our goal was to perform a systematic review to assess the relationship between environmental air pollution and thyroid cancer.

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Developing real-world evidence from electronic health records (EHR) is vital to advancing kidney transplantation (KT). We assessed the feasibility of studying KT using the Epic Cosmos aggregated EHR data set, which includes 274 million unique individuals cared for in 238 US health systems, by comparing it with the Scientific Registry of Transplant Recipients (SRTR). We identified 69 418 KT recipients who underwent transplants between January 2014 and December 2022 in Cosmos (39.

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Background: Kidney transplant (KT) candidates often experience hospitalizations, increasing their delirium risk. Hospitalizations and delirium are associated with worse post-KT outcomes, yet their relationship with pre-KT outcomes is less clear. Pre-KT delirium may worsen access to KT due to its negative impact on cognition and ability to maintain overall health.

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Background: Fewer minoritized patients with end-stage kidney disease (ESKD) receive kidney transplantation (KT); efforts to mitigate disparities have thus far failed. Pinpointing the specific stage(s) within the transplant care continuum (being informed of KT options, joining the waiting list, to receiving KT) where disparities emerge among each minoritized population is pivotal for achieving equity. We therefore quantified racial and ethnic disparities across the KT care continuum.

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Introduction: Dietary restrictions for patients with end-stage kidney disease (ESKD) are burdensome. Kidney transplantation (KT) candidates who lack neighborhood resources and are burdened by dietary restrictions may have decreased access to KT.

Methods: In our two-center prospective cohort study (2014-2023), 2471 ESKD patients who were evaluated for KT (candidates) reported their perceived burden of dietary restrictions (not at all, somewhat/moderately, or extremely bothered).

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Importance: Cytomegalovirus (CMV) is associated with significant morbidity and mortality in solid organ transplant (SOT) recipients. The risk factors for CMV seropositivity in SOT recipients, including area-level social deprivation in the US, have not been fully characterized.

Objective: To (1) evaluate CMV seroprevalence, (2) assess the recipient characteristics associated with CMV seropositivity, and (3) assess the association of area-level social deprivation index (SDI) scores with pretransplant CMV serostatus.

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Background And Hypothesis: Early steroid withdrawal (ESW) is often preferred over conventional steroid maintenance (CSM) therapy for kidney transplant recipients with low immunological risks because it may minimize immunosuppression-related adverse events while achieving similar transplant outcomes. However, the risk-benefit balance of ESW could be less favorable in retransplant recipients given their unique immunological risk profile. We hypothesized that the association of ESW with transplant outcomes would differ between first-transplant and retransplant recipients.

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Introduction: ChatGPT has shown the ability to answer clinical questions in general medicine but may be constrained by the specialized nature of kidney transplantation. Thus, it is important to explore how ChatGPT can be used in kidney transplantation and how its knowledge compares to human respondents.

Methods: We prompted ChatGPT versions 3.

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  • Post-transplant, sexual bother tends to decrease over the first three years, with a significant improvement in sexual activity, especially peaking one year after transplantation.
  • It's important to address sexual health during kidney transplantation management, as it greatly influences the quality of life for patients both before and after the procedure.
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Introduction: Uremic toxins contributing to increased risk of death remain largely unknown. We used untargeted metabolomics to identify plasma metabolites associated with mortality in patients receiving maintenance hemodialysis.

Methods: We measured metabolites in serum samples from 522 Longitudinal US/Canada Incident Dialysis (LUCID) study participants.

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Background: Sarcopenia has been associated with adverse postoperative outcomes in older age cohorts, but has not been assessed in older adults with inflammatory bowel disease (IBD). Further, current assessments of sarcopenia among all aged individuals with IBD have used various measures of muscle mass as well as cutoffs to define its presence, leading to heterogeneous findings.

Methods: In this single-institution, multihospital retrospective study, we identified all patients aged 60 years and older with IBD who underwent disease-related intestinal resection between 2012 and 2022.

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Objectives: Obesogenic medications are a putative contributor to the obesity epidemic. While 20% of adults take ≥1 obesogenic medication, the proportion in the end-stage kidney disease (ESKD) population-a group enriched for cardiometabolic complications-is unknown. Obesogenic medications may contribute to obesity and hamper weight loss efforts to achieve transplant listing.

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Introduction: As the inflammatory bowel disease (IBD) patient population is aging, the prevalence of polypharmacy is rising. However, data exploring the prevalence, risk factors, and clinical outcomes associated with polypharmacy among older adults with IBD are limited. The aim of the study is to determine (i) prevalence of polypharmacy (≥5 medications) and potentially inappropriate medication (PIM) utilization in older adults with IBD, (ii) changes in medications over time, (iii) predictors of polypharmacy, and (iv) the impact of polypharmacy/PIMs on 1-year hospitalization rates.

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Introduction: Frailty and cognitive function are often measured during kidney transplant evaluation. However, patient perspectives on the ethical considerations of this practice are unclear.

Research Question: What are patient perspectives on the use of aging metrics in kidney transplant decision-making?

Design: One hundred participants who were evaluated for kidney transplantation and were enrolled in an ongoing prospective cohort study (response rate = 61.

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Background: Medical distrust may hinder kidney transplantation (KT) access. Among KT candidates evaluated for waitlisting, we identified factors associated with high distrust levels and quantified their association with waitlisting.

Methods: Among 812 candidates (2018-2023), we assessed distrust using the Revised Health Care System Distrust Scale across composite, competence, and values subscales.

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Article Synopsis
  • Adults living in deprived neighborhoods face socioeconomic challenges that reduce their chances of receiving live-donor and preemptive kidney transplants, with a significant impact based on race and ethnicity.
  • A study analyzing over 403,000 kidney transplant candidates found that higher neighborhood deprivation correlated with lower transplant rates, particularly affecting Black candidates.
  • Key socioeconomic factors, like income and education, were linked to higher chances of receiving transplants, highlighting the need for targeted efforts to address these disparities.
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  • - Older patients with kidney failure who have sleep disorders are at a significantly increased risk for various types of dementia, including vascular dementia, with over 50% of these patients experiencing sleep issues.
  • - A study involving over 216,000 older patients revealed that 26.3% were diagnosed with sleep disorders, leading to higher incidences of dementia within five years compared to those without sleep issues.
  • - For patients specifically diagnosed with obstructive sleep apnea, positive airway pressure (PAP) therapy appears to lower the risk of developing dementia, highlighting a potential intervention for this vulnerable group.
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