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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 IV: Diagnostic Studies and Prevention01:30

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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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Drug Dosing in Renal Diseases: Measurement of Serum Creatinine Concentration and Clearance01:25

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In healthy individuals, serum creatinine levels remain stable due to a balance between its constant production—primarily from muscle metabolism—and renal excretion. Creatinine is freely filtered by the glomeruli, making it a valuable marker for estimating renal function. When the glomerular filtration rate (GFR) decreases, the kidneys can only eliminate less creatinine, causing serum levels to rise.Serum creatinine concentration is widely used to estimate creatinine clearance...
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Acute Kidney Injury III: Clinical Manifestations01:29

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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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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.
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Acute Kidney Injury (AKI) requires a collaborative healthcare approach to restore renal function and prevent complications. Essential management strategies involve monitoring fluid and electrolyte balance, adjusting medications, initiating dialysis when necessary, and providing nutritional support.Fluid and Electrolyte ManagementFluid Monitoring: Regularly monitoring body weight, central venous pressure, and urine output helps detect fluid imbalances early. Patient intake and output are...
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Ischemia-reperfusion Model of Acute Kidney Injury and Post Injury Fibrosis in Mice
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A decrease in serum creatinine after ICU admission is associated with increased mortality.

Hye Ran Kang1, Si Nae Lee1, Yun Ju Cho1

  • 1Division of Nephrology, Soonchunhyang University Hospital, Seoul, Korea.

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|August 25, 2017
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Summary
This summary is machine-generated.

A decrease in serum creatinine (SCr) in intensive care unit (ICU) patients, not just an increase, is linked to higher mortality. This finding highlights the complex relationship between SCr changes and patient outcomes in critical care settings.

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Area of Science:

  • Nephrology
  • Critical Care Medicine
  • Clinical Research

Background:

  • Acute kidney injury (AKI), indicated by elevated serum creatinine (SCr), is a known predictor of mortality in critically ill patients.
  • The impact of SCr decrease on patient outcomes in the intensive care unit (ICU) remains unclear.

Purpose of the Study:

  • To investigate the association between changes in serum creatinine (SCr) levels after ICU admission and 90-day mortality.
  • To determine if a decrease in SCr, similar to an increase, is associated with adverse outcomes in critically ill patients.

Main Methods:

  • A retrospective study analyzed 486 ICU patients admitted between January 2014 and December 2014.
  • Patients were categorized based on SCr changes: stable (Δ SCr < 0.3mg/dL), decreased (Δ SCr ≥ -0.3 mg/dL), and increased (following KDIGO AKI criteria).
  • The effect of these SCr changes on 90-day mortality was assessed using Kaplan-Meier and Cox regression analyses.

Main Results:

  • SCr decreased in 25.3% of patients, and AKI developed in 24.4%. The overall 90-day mortality rate was 29.0%.
  • Kaplan-Meier analysis revealed higher mortality in the AKI group (p<0.0001) and in patients with decreased SCr compared to stable SCr (p<0.0001).
  • Cox analysis identified both decreased SCr (HR, 3.56) and increased SCr (AKI stages 1-3, HRs ranging from 9.35 to 17.41) as independent risk factors for death compared to stable SCr.

Conclusions:

  • Both an increase and a decrease in serum creatinine (SCr) after ICU admission are associated with increased 90-day mortality.
  • These findings suggest that SCr dynamics, not just absolute levels or increases, are critical indicators of prognosis in critically ill patients.