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Related Concept Videos

Factors Affecting Renal Clearance: Renal Impairment01:17

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Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
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In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
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Glomerular filtration rate (GFR) can be estimated from serum creatinine using the modification of diet in renal disease (MDRD) formula or the chronic kidney disease–epidemiology collaboration (CKD–EPI) equation. Both methods are widely used in clinical practice to assess kidney function and guide treatment decisions.The MDRD equation does not require weight or height measurements and is normalized to the body surface area of 1.73 m², considered the average adult surface area.
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Drug Dosing in Renal Diseases: Dose Adjustments Based on Drug Clearance and Elimination Rate Constant01:25

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In patients with renal disease, dosage adjustments are necessary to maintain therapeutic plasma drug concentrations and prevent toxicity or subtherapeutic exposure. Renal impairment alters drug pharmacokinetics, especially in conditions like uremia, where changes such as prolonged elimination half-life and altered apparent volume of distribution can significantly affect drug disposition. These changes require careful modification of the dosing regimen to achieve the desired clinical...
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In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
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Acute Kidney Injury (AKI) progresses through distinct clinical phases: the oliguric, diuretic, and recovery phases, each marked by unique manifestations and challenges.Oliguric Phase:The oliguric phase is the initial stage of AKI, typically lasting 10 to 14 days. This phase is marked by a significant reduction in urine output, usually less than 400 mL per day, indicating decreased kidney function. Fluid retention is a prominent feature, leading to symptoms such as edema, hypertension, and...
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Association between uric acid lowering and renal function progression: a longitudinal study.

Liyi Liu1, Lili You1, Kan Sun1

  • 1Department of Endocrinology, Sun Yat-Sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.

Peerj
|April 8, 2021
PubMed
Summary

Lowering serum uric acid levels is linked to improved kidney function and reduced risk of decline. Managing uric acid is important for chronic kidney disease patients.

Keywords:
Chronic kidney diseasePopulation-based studyRenal functionUric acid lowering

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Area of Science:

  • Nephrology
  • Metabolic Disorders
  • Epidemiology

Background:

  • Investigating the relationship between serum uric acid levels and kidney function is crucial for understanding chronic kidney disease progression.
  • Previous studies suggest a potential link, but further population-based evidence is needed.

Purpose of the Study:

  • To explore the association between changes in serum uric acid levels and renal function.
  • To determine if uric acid lowering impacts the risk of renal function decline or improvement.

Main Methods:

  • A population-based cohort study involving 1,534 subjects over 4 years (2012-2016).
  • Participants were grouped into quartiles based on serum uric acid change.
  • Renal function decline and improvement were defined by changes in estimated glomerular filtration rate (eGFR).
  • Cox regression analysis was employed to assess hazard ratios (HR) and 95% confidence intervals (CI).

Main Results:

  • Compared to the highest quartile of uric acid change, lower quartiles (Q1, Q2, Q3) showed a significantly reduced risk of renal function decline (HR < 1).
  • Specifically, Q1 (HR=0.64) and Q2 (HR=0.65) demonstrated the most substantial reduction in decline risk.
  • Conversely, lower quartiles (Q1, Q2) were associated with an increased hazard ratio for renal function improvement compared to Q4.

Conclusions:

  • Uric acid lowering is significantly associated with positive changes in renal function, including reduced decline and improved function.
  • These findings highlight the importance of managing serum uric acid levels in clinical practice.
  • Serum uric acid management should be considered a component of chronic kidney disease treatment strategies.