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Related Concept Videos

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 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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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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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 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 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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Related Experiment Video

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Postoperative acute kidney injury.

S Romagnoli1, Z Ricci

  • 1Department of Human Health Sciences, Section of Anesthesiology and Intensive Care, University of Florence, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy - zaccaria.ricci@gmail.com.

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Summary

Acute kidney injury (AKI) after surgery is common and serious, especially for dialysis patients. A multi-step approach combining risk assessment, prevention, and goal-directed management is needed to reduce its incidence and severity.

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Area of Science:

  • Nephrology
  • Surgical Medicine
  • Critical Care Medicine

Background:

  • Acute kidney injury (AKI) is a significant complication in hospitalized patients, particularly those undergoing surgery.
  • Recent classifications (RIFLE, AKIN, KDIGO) have improved the evaluation of perioperative kidney dysfunction.
  • AKI is associated with high morbidity and mortality, especially in patients requiring dialysis.

Purpose of the Study:

  • To review the epidemiology of postoperative AKI.
  • To identify patient-related and technical-related risk factors for AKI across different surgical types.
  • To summarize outcomes and prevention strategies for postsurgical AKI.

Main Methods:

  • Literature review of studies on postoperative AKI.
  • Analysis of risk factors and outcomes in various surgical contexts (non-cardiac, cardiac, thoracic, vascular).
  • Evaluation of current prevention and treatment strategies.

Main Results:

  • Predictors of AKI vary by surgery type; hemodynamic monitoring and goal-directed fluid management may limit perioperative AKI.
  • Hydration is the primary preventive strategy for open and endovascular surgery-related AKI.
  • AKI is a frequent complication after thoracic surgery, particularly lung cancer resection.

Conclusions:

  • Postsurgical AKI results from multi-hit mechanisms acting on patient susceptibility.
  • A comprehensive strategy involving risk stratification, preventive measures, and goal-directed intraoperative algorithms is necessary.
  • Further research and tailored approaches are needed to effectively manage and prevent AKI in diverse surgical populations.