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Related Concept Videos

Nephrons01:10

Nephrons

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The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma...
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Urinary Tract Calculi I: Introduction01:28

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Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
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Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

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Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
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Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

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The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
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Urinary Tract Calculi V: Nursing Management01:28

Urinary Tract Calculi V: Nursing Management

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AssessmentSubjective Data: Obtain a detailed health history, including any recent or chronic urinary tract infections, periods of immobilization, previous episodes of renal calculi, and medical conditions such as gout, benign prostatic hyperplasia, or hyperparathyroidism. Review the medication history for drugs that may influence stone formation, including allopurinol, analgesics, loop diuretics, or thiazide diuretics. Document the use of long-term indwelling catheters and any past surgical...
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Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

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Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
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Related Experiment Video

Updated: May 4, 2026

Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
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Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis

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Nephrolithiasis.

Elaine M Worcester1, Fredric L Coe

  • 1Nephrology Section/MC 5100, Department of Medicine, University of Chicago, 5841 South Maryland Avenue, Chicago, IL 60637, USA. eworcest@medicine.bsd.uchicago.edu

Primary Care
|May 20, 2008
PubMed
Summary

Kidney stones are common and increasing. Lowering urine supersaturation through diet and medication can prevent stone recurrence and reduce the need for procedures.

Area of Science:

  • Nephrology
  • Urology
  • Metabolic Disorders

Background:

  • Kidney stones affect over 5% of US adults, with rising prevalence.
  • Supersaturation of urine is the primary cause of kidney stone formation.
  • Calcium stones are most common, often linked to idiopathic hypercalciuria.

Purpose of the Study:

  • To summarize the causes and management of kidney stones.
  • To highlight the role of urine supersaturation in stone etiology.
  • To emphasize therapeutic strategies for stone prevention.

Main Methods:

  • Literature review on kidney stone pathogenesis.
  • Analysis of factors influencing urine solubility (volume, pH, solute excretion).
  • Overview of current dietary and medicinal interventions.

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Main Results:

  • Urine supersaturation is a fundamental factor in all kidney stone formation.
  • Idiopathic hypercalciuria is a common metabolic disorder associated with calcium stones.
  • Therapeutic approaches focus on reducing supersaturation.

Conclusions:

  • Effective kidney stone prevention relies on lowering urine supersaturation.
  • Dietary and medicinal therapies decrease stone recurrence.
  • Successful treatment reduces the need for surgical stone removal procedures.