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Related Concept Videos

Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

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)...
Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

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...
Urinary Tract Calculi VI: Surgical Management01:25

Urinary Tract Calculi VI: Surgical Management

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...
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

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...
Urinary Tract Calculi V: Nursing Management01:28

Urinary Tract Calculi V: Nursing Management

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...
Urinary Tract Calculi IV: Nutrition Therapy and Prevention01:27

Urinary Tract Calculi IV: Nutrition Therapy and Prevention

Management of renal calculi focuses on effective strategies like tailored nutrition and hydration therapy. Adjusting diet and fluid intake reduces stone formation and recurrence, making these interventions simple yet powerful in kidney stone prevention and management.Understanding Kidney StonesKidney stones form when calcium, oxalate, uric acid, and cystine concentrate and crystallize in urine. Factors contributing to their formation include genetic predisposition, certain medical conditions,...

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Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
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Urolithiasis through the ages: data on more than 200,000 urinary stone analyses.

Thomas Knoll1, Anne B Schubert, Dirk Fahlenkamp

  • 1Department of Urology, Sindelfingen-Boeblingen Medical Center, University of Tübingen, Tübingen, Germany. t.knoll@klinikverbund-suedwest.de

The Journal of Urology
|February 22, 2011
PubMed
Summary

Urinary stone (urolithiasis) analysis shows increasing male prevalence and shifts in age distribution. Regional variations in stone composition highlight the impact of lifestyle and healthcare on stone formation.

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Area of Science:

  • Urology
  • Nephrology
  • Epidemiology

Background:

  • Urolithiasis incidence and prevalence are rising globally.
  • Observed changes in patient demographics and regional stone patterns necessitate updated analysis.

Purpose of the Study:

  • To analyze trends in urinary stone composition, and age and gender distributions.
  • To identify regional variations in stone formation across Germany.

Main Methods:

  • Evaluation of 224,085 urinary stone analyses from 22 German centers (1977–2006).
  • Analysis of a subset of 58,682 stone analyses (1993–2006) for regional differences.

Main Results:

  • Calcium calculi were most common; male-to-female ratio increased from 1.86:1 to 2.7:1.
  • Increasing incidence noted in middle-aged patients (40–49 years) since 1997.
  • Infection stones decreased, uric acid stones remained stable, and cystine stones were rare. Regional variations in uric acid and infection stones were observed.

Conclusions:

  • Age and gender significantly influence urinary stone formation and composition.
  • Regional differences underscore the impact of lifestyle, diet, and medical care on urolithiasis.