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Updated: Aug 18, 2026

A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion
Published on: February 2, 2021
[Acute renal insufficiency in children]
Insights
Acute renal failure (ARF) is a sudden loss of kidney function, categorized as prerenal, intrinsic, or postrenal. Prompt diagnosis and treatment of ARF significantly improve patient prognosis.
Area of Science:
- Nephrology
- Internal Medicine
- Physiology
Context:
- Acute renal failure (ARF) is characterized by a rapid decline in glomerular filtration rate.
- ARF leads to the accumulation of waste products, water, and electrolytes.
- Causes are classified into prerenal, intrinsic, and postrenal categories.
Purpose:
- To outline the classification, causes, and management of acute renal failure.
- To highlight the importance of early diagnosis and intervention for prerenal causes.
- To detail the comprehensive management strategies for established renal failure.
Summary:
- Prerenal failure, often reversible with prompt intervention like vascular expansion, can progress to intrinsic renal damage if untreated.
- Early biochemical markers and imaging studies are crucial for differentiating causes and guiding treatment.
- Management of established ARF involves addressing fluid/electrolyte imbalances, metabolic acidosis, anemia, hypertension, and nutritional support, with dialysis as a potential intervention.
Impact:
- Early recognition and management of ARF can prevent progression to severe kidney damage.
- Effective treatment strategies improve patient outcomes and prognosis.
- Understanding ARF's diverse causes and management is vital for clinical practice.
Abstract:
Acute renal failure (ARF) implies a sudden decrease in glomerular filtration rate with consequent retention of nitrogen waste products, water and electrolytes normally excreted by the kidney. The causes of ARF fall into three main groups: prerenal, intrinsic, and postrenal. Prerenal or functional failure can usually be controlled by simple therapeutic measures. If unrelieved, it leads to the development of renal parenchymal damage. Early biochemical indices are useful in distinguishing prerenal from intrinsic renal failure. Potentially reversible obstruction must be searched for by ultrasonographic and radiological procedures, and rapidly relieved. Symptoms of ARF result from disturbance of physiological regulatory functions. Prerenal failure requires urgent vascular expansion and careful monitoring of fluid and electrolyte replacement. Established renal failure demands careful management of electrolyte and water overload, metabolic acidosis, anemia, hypertension, infections and nutrition. Peritoneal dialysis or hemodialysis should be prepared for whenever severe hypertension, pulmonary edema or worsening biochemistry occur. Acute renal failure has a generally good prognosis if properly treated.
Related Concept Videos
Acute Kidney Injury I: Introduction
Acute Kidney Injury II: Pathophysiology
Acute Kidney Injury III: Clinical Manifestations
Acute Kidney Injury IV: Diagnostic Studies and Prevention
Acute Kidney Injury V: Interprofessional Care
Chronic Kidney Disease III: Interprofessional Care

