Related Experiment Video
Updated: Jun 6, 2025

Analysis of Nephron Composition and Function in the Adult Zebrafish Kidney
Published on: August 9, 2014
Acute Kidney Injury in Children: Classification, Recognition and Treatment Principles
1Department of Nephrology, Division of Pediatrics, University Medical Centre Ljubljana, Bohoričeva 20, 1000 Ljubljana, Slovenia.
Insights
Acute kidney injury (AKI) in children is a sudden loss of kidney function. This overview covers pediatric AKI causes, management in intensive care units, and long-term risks like chronic kidney disease.
Area of Science:
- Pediatric Nephrology
- Critical Care Medicine
Background:
- Acute kidney injury (AKI) in children presents a significant clinical challenge.
- Early recognition and management are crucial for improving outcomes.
Purpose of the Study:
- To provide a comprehensive overview of pediatric AKI.
- To discuss pathophysiology, drug effects, and long-term sequelae.
Main Methods:
- Review of current literature on pediatric AKI.
- Discussion of key clinical concepts including urine output, electrolytes, and acid-base balance.
- Exploration of intensive care unit management and renal replacement therapy.
Main Results:
- AKI involves complex interactions affecting urine output, electrolytes, and renal perfusion.
- Diuretic nephrotoxicity and reduced glomerular filtration rate are key concerns.
- AKI is associated with multiorgan failure and requires intensive care.
Conclusions:
- Pediatric AKI necessitates a thorough understanding of its pathophysiology and management.
- Long-term risks include chronic kidney disease, hypertension, and proteinuria.
- Effective management strategies are vital to mitigate adverse outcomes.
Abstract:
Acute kidney injury (AKI) in children is a critical medical condition characterized by a sudden decline in kidney function. This article provides a comprehensive overview of AKI in pediatric populations, exploring its pathophysiology, the role of various drugs and the long-term implications for kidney health. Key topics include oliguria, anuria, urine output, hypervolemia and the interactions among them, as well as role of diuretic nephrotoxicity and the glomerular filtration rate. Concepts of electrolytes, acid-base balance and renal perfusion assessment are presented. Basic principles of intensive care unit (ICU) management, renal replacement therapy and the association with multiorgan failure are described. Additionally, the article discusses the potential long-term outcomes of AKI, including the risk of chronic kidney disease, hypertension and proteinuria.
Related Concept Videos
Nephrons
Dialysis
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
Factors Affecting Renal Clearance: Renal Impairment
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...
Renal Regulation of Acid-Base Balance
In the kidneys, cells within the proximal convoluted tubules (PCT) and the collecting ducts secrete hydrogen ions (H+) into the tubular fluid. Specifically, in the PCT, Na+/H+ antiporters secrete H+ while reabsorbing Na+.
However, the intercalated cells in...
Internal Anatomy of the Kidney
Anatomical Position and Dimensions
The kidneys are retroperitoneal organs positioned against the posterior abdominal wall on either side of the spine, roughly between the twelfth thoracic and third lumbar vertebrae. Each kidney is typically 10-12 cm long, 5-6 cm wide, and 3-4 cm thick, weighing about 150 grams.
Renal Cortex
The outermost region of the kidney is the...
Renal Tubule and Collecting Duct
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...

