Publications by authors named "Langston C"

Background: The Thrive program is an evidenced-based care model for Medicaid-insured adults in the hospital-to-home transition. A substantial portion of Thrive participants live with serious mental illness (SMI), yet Thrive's efficacy has not been tested among these patients.

Purpose: To compare 30-day postdischarge outcomes between Thrive participants with and without SMI and explore Thrive's appropriateness and acceptability among participants with SMI.

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Article Synopsis
  • COVID-19 mortality rates were higher for socially vulnerable patients, including those with poverty and housing insecurity, and were linked to the quality of hospital care they received, especially nursing care.
  • A study analyzed data from nurses, Medicare claims, and the Social Vulnerability Index, revealing that the highest social vulnerability quartile had a significantly higher mortality rate compared to the lowest.
  • The findings suggest improving nurse work environments could potentially reduce mortality rates among vulnerable populations and should be prioritized in health emergency planning.
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Objectives: Urine specific gravity (USG) is the most common method for the estimation of urine concentration in cats. Utilization of USG as a screening tool is easily accessible and is of low cost to the client if strategically utilized in settings of higher diagnostic value. There is currently minimal population information regarding how USG changes across ages in cats.

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Objective: To describe the use of intermittent hemodialysis (IHD) to remove gadolinium (28.1 mg/kg dose) in a dog with severe kidney disease.

Case Summary: A 12-year-old neutered female Yorkshire Terrier presented with severe acute-on-chronic kidney injury and concurrent neurological signs.

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An adult American Quarter Horse mare presented for pigmenturia and lethargy of 12 hours' duration and was diagnosed with silver maple leaf toxicity. The mare had intravascular hemolysis and azotemia. The mare was treated with a transfusion of whole blood, fluids administered IV, antibiotics, oxygen insufflation, and supportive care.

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Intermittent hemodialysis (IHD) is an advanced adjunctive standard of care for severe acute kidney injury (AKI) and other indications. Most animals with AKI are managed medically, however, when the disease is severe, medical management may not control the consequences of the disease, and animals with a potential for renal recovery may die from the consequences of uremia before recovery has occurred. Extracorporeal therapies aid the management of AKI by expanding the window of opportunity for recovery of sufficient kidney function to become dialysis independent.

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Objective: To describe the successful use of carbon hemoperfusion and hemodiafiltration in combination with mechanical ventilation (MV) to treat a severe intoxication of 5-hydroxytryptophan (5-HTP) in a dog.

Case Summary: A dog ingested a minimum of 550 mg/kg of extended-release 5-HTP, resulting in serotonin syndrome that progressed to a comatose state and severe hypoventilation requiring MV. Extracorporeal carbon hemoperfusion coupled with hemodiafiltration was performed to remove 5-HTP from this patient.

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Acute kidney injury (AKI) is defined as an injury to the renal parenchyma, with or without a decrease in kidney function, as reflected by accumulation of uremic toxins or altered urine production (i.e., increased or decreased).

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Objectives: Collaborative care (CC) has demonstrated effectiveness for improving late-life depression in primary care, but clinics offering this service can find it challenging to address unmet social needs that may be contributing to their patients' depression. Clinics may benefit from better coordination and communication with community-based organizations (CBO) to strengthen depression treatment and to address unmet social needs. We evaluated the feasibility of adding a CBO to enhance standard collaborative care and the impact of such partnered care on older adults.

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Successful treatment of pemphigus foliaceus (PF) often requires a multimodal therapeutic approach. The dog described herein underwent four therapeutic plasma exchange treatments for severe, refractory PF, resulting in a 50% reduction of lesional body surface area. This treatment option should be considered for the management of canine PF.

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This paper proposes that billing gamesmanship occurs when physicians free-ride on the billing practices of other physicians. Gamesmanship is non-universalizable and does not exercise a competitive advantage; consequently, it distorts prices and allocates resources inefficiently. This explains why gamesmanship is wrong.

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Background: Erythropoietic effects of molidustat, a hypoxia-inducible factor prolyl hydroxylase (HIF-PH) inhibitor, were previously demonstrated in healthy cats.

Objective: To evaluate the safety and erythropoietic effects of daily PO administration of molidustat in anemic cats with chronic kidney disease (CKD).

Animals: Twenty-one client-owned CKD cats (4-17 years old) with anemia.

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The objective of this case report is to describe the use of extracorporeal therapy, specifically hemodialfiltration, for the treatment of caffeine intoxication. A 12 year old Border Terrier consumed up to 1440 mg/kg of caffeine and rapidly developed clinical signs of tachycardia and tremors. Hemodiafiltration was instituted, using an M60 PrismaFlex cartridge using blood to prime the system due to patient size.

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Article Synopsis
  • - The study investigated the effect of aldosterone breakthrough (ABT) on proteinuria reduction in dogs with chronic kidney disease (CKD) undergoing treatment with renin-angiotensin system (RAS) inhibitors.
  • - Out of 56 dogs with CKD, 36% showed a significant reduction in proteinuria, while ABT was observed in 34% to 59% of dogs, depending on the criteria used, but it did not correlate with the proteinuria outcomes.
  • - The results suggest that while ABT is common among dogs treated with RAS inhibitors for CKD, it does not impact the effectiveness of proteinuria reduction; longer treatment duration was linked to better results.
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Background: Chronic kidney disease (CKD) leads to low serum concentrations of vitamin D metabolites. Thus, hypovitaminosis D associated with CKD might contribute to disease progression via increased concentration of renin angiotensin aldosterone system (RAAS) mediators.

Objectives: To evaluate whether supplementation with calcifediol affects equilibrium concentrations of selected mediators of the RAAS.

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Our study objective was to identify a subcutaneous enoxaparin dosage that provided a consistent anticoagulant intensity in dogs. Our hypotheses were that a dose of 0.8 mg/kg would provide inconsistent anticoagulation, a higher dose would provide consistent anticoagulation over a greater duration of time, and viscoelastometry would effectively monitor the anticoagulant status.

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Background: While many patients with myelin oligodendrocyte glycoprotein antibody-mediated disease (MOG-AD) will have a monophasic course, 30-80% of patients will relapse after the initial attack. It is not known which factors predict relapse. Here we describe our clinical experience with MOG-AD and evaluate for factors that correlate with relapsing disease.

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This study aimed to retrospectively describe the clinical progression following diagnosis of iatrogenic hypocortisolemia (iHC) in 48 dogs receiving trilostane for pituitary-dependent hyperadrenocorticism. Cortisol concentrations were ≥1.5 mg/dL within 6 mo following diagnosis of iHC in 76.

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Intravenous fluid therapy has long been the mainstay of treatment of kidney disease, including acute kidney injury and uremic crisis associated with chronic kidney disease. Careful management of fluid dose is critical, as animals with kidney disease may have marked derangements in their ability to regulate fluid homeostasis and acid-base status. Understanding of the physiology of renal fluid handling is necessary, along with repeated attention to parameters of fluid status, electrolytes, and acid-base balance, to achieve optimal hydration status and avoid further damage or decrease in function from dehydration or overhydration.

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  • Refractometry is commonly used in veterinary clinics to measure the specific gravity of canine urine (USG), and a study involved 3 registered veterinary technicians (RVTs) assessing USG with both analog and digital refractometers on 38 dogs.
  • The findings showed extremely high interobserver reliability, with intraclass correlation coefficients (ICCs) of 0.995 for analog and 0.999 for digital refractometers, indicating strong agreement between technicians.
  • The results suggest that the tiny variability in USG measurements among the RVTs doesn't affect clinical decisions, ensuring reliable assessments in veterinary practice.
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Background: Detection of free light chains (fLC) in animals relies on protein electrophoresis or the Bence-Jones protein test on urine.

Objective: To describe the detection of both serum fLC (sfLC) and urine fLC (ufLC) in 8 dogs and 2 cats using a commercially available human immunofixation (IF) kit.

Animals: Archived serum or urine samples from 27 dogs and 2 cats submitted to the Colorado State University Veterinary Diagnostic Laboratory for routine diagnostics.

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Background: The effects of epidural anesthesia in dogs undergoing cystoscopy are unknown.

Objective: To investigate the effect of epidural analgesia on postcystoscopy pain in dogs.

Animals: Twenty-six dogs undergoing routine cystoscopy for lower urinary tract disease.

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Our laboratory and others have developed protocols to generate glucose-responsive stem cell-derived β cells in vitro. The cells resulting from these protocols could supplement or replace the use of human cadaveric islets for cell-based therapy for diabetes. The combination of an unlimited supply of pluripotent stem cell-derived β cells and gene-editing approaches will facilitate numerous in vitro studies not possible with cadaveric islets.

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Objectives: The aims of this study were to determine the side effect frequency and serum and urine drug concentrations of amoxicillin-clavulanic acid in cats with and without azotemic chronic kidney disease (azCKD).

Methods: Owners whose cats had been prescribed amoxicillin-clavulanic acid completed a survey regarding the occurrence and type of side effects, and whether treatment was altered as a result. Cats were defined as azCKD (serum creatinine concentration >2.

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