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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

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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 V: Interprofessional Care01:20

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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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Acute Kidney Injury II: Pathophysiology01:29

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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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Acute Kidney Injury VI: Nursing Management01:22

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Acute Kidney Injury (AKI) results in an inability to maintain fluid, electrolyte, and acid-base balance. Effective nursing management is critical in improving patient outcomes and includes comprehensive patient assessment and targeted interventions.Comprehensive Patient AssessmentA detailed history collection is essential, focusing on any recent infections, nephrotoxic medication use, or chronic conditions such as hypertension and diabetes that may contribute to AKI. During the physical...
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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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Perioperative Acute Kidney Injury: What's New in 2025?

Omar Elmadhoun1, Krishnan Ramanujan1, Patrick M Wieruszewski2

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Perioperative acute kidney injury (AKI) is a common complication with unclear mechanisms. Early detection and targeted interventions are crucial for improving patient outcomes beyond surgery.

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Area of Science:

  • Nephrology
  • Cardiovascular Surgery
  • Critical Care Medicine

Background:

  • Perioperative acute kidney injury (AKI) is a frequent complication impacting long-term patient outcomes.
  • Current AKI assessment using serum creatinine and estimated glomerular filtration rate is insensitive to early renal injury.
  • Subclinical AKI, where renal injury precedes detectable changes, can mask true kidney status.

Purpose of the Study:

  • To review current understanding of perioperative AKI mechanisms and assessment.
  • To explore novel biomarkers and subphenotypes for improved AKI prediction and management.
  • To discuss interventions and future research directions in high-risk settings like cardiac surgery.

Main Methods:

  • Literature review synthesizing current concepts in perioperative AKI.
  • Discussion of traditional and emerging biomarkers for AKI detection.
  • Analysis of subphenotypes and interventions tested in cardiac surgery settings.

Main Results:

  • AKI mechanisms involve comorbidities, surgical stress, and hemodynamics, often preceding standard biomarker detection.
  • Investigational biomarkers (NGAL, TIMP-2) and subtyping (hypoperfusive, inflammatory, etc.) show promise for early prediction.
  • Interventions in cardiac surgery have shown inconsistent benefits, highlighting the need for refined strategies.

Conclusions:

  • Improved understanding of AKI pathophysiology and early detection methods are critical.
  • Biomarker panels and subphenotype recognition are key to targeted AKI management.
  • Continued innovation in AI, simulation, and implementation science is needed to enhance perioperative renal outcomes.