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Related Concept Videos

Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

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Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
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Acute Kidney Injury I: Introduction01:22

Acute Kidney Injury I: Introduction

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Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
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Acute Kidney Injury III: Clinical Manifestations01:29

Acute Kidney Injury III: Clinical Manifestations

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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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Factors Affecting Renal Clearance: Renal Impairment01:17

Factors Affecting Renal Clearance: Renal Impairment

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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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Acute Kidney Injury II: Pathophysiology01:29

Acute Kidney Injury II: Pathophysiology

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Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
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Chronic Kidney Disease III: Interprofessional Care01:28

Chronic Kidney Disease III: Interprofessional Care

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Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
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Related Experiment Video

Updated: Oct 2, 2025

Ischemia-reperfusion Model of Acute Kidney Injury and Post Injury Fibrosis in Mice
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A sudden creatinine increase: A case report.

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Biochemia Medica
|February 25, 2022
PubMed
Summary
This summary is machine-generated.

Elevated creatinine levels can mislead kidney function assessment due to preanalytical errors. Accurate renal disease diagnosis requires careful consideration of laboratory testing limitations for both creatinine and cystatin C.

Keywords:
case reportcreatininecystatin Cestimated glomerular filtration rate

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Area of Science:

  • Clinical Chemistry
  • Nephrology
  • Biomarker Analysis

Background:

  • Creatinine and estimated glomerular filtration rate (eGFR) are standard diagnostics for kidney disease.
  • Cystatin C (cysC) is increasingly used as a complementary biomarker for renal status assessment and is included in clinical guidelines.
  • Both creatinine and cysC assays have limitations, including susceptibility to preanalytical errors.

Observation:

  • The study encountered implausibly elevated creatinine levels in a patient case.
  • These erroneous creatinine results were attributed to preanalytical errors during sample handling or processing.
  • The case highlights potential pitfalls in routine renal biomarker testing.

Findings:

  • Preanalytical variability can significantly impact the accuracy of creatinine measurements.
  • Improper sample handling can lead to falsely elevated creatinine, potentially misdiagnosing renal function.
  • This underscores the importance of stringent preanalytical protocols in clinical laboratories.

Implications:

  • Clinicians must be aware of preanalytical error risks when interpreting creatinine and eGFR results.
  • Quality control measures for sample collection and processing are crucial for reliable renal biomarker assessment.
  • Further research may be needed to standardize assays and minimize preanalytical interferences for both creatinine and cysC.