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Related Concept Videos

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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Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
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Ureters01:22

Ureters

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The ureters are retroperitoneal tubes located on either side of the vertebral column. They are responsible for transporting urine from each kidney to the urinary bladder. These tubes have thick walls and are approximately 25-30 cm long. Their diameter is around 10 mm at the renal pelvis, gradually narrowing to 1 mm as the ureter obliquely enters the posterior bladder wall through the ureteric orifices. The shape of these orifices is slit-like, which helps to prevent urine backflow toward the...
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Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

49
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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Developments in Ureteral Stent Technology.

Justin Lee1, Matthew Katz1, Ojas Shah1

  • 1Department of Urology, Columbia University Medical Center, New York, NY, United States.

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This summary is machine-generated.

Ureteral stents improve patient outcomes through technological advances. This review details stent development history and recent innovations for urologists to optimize patient care.

Keywords:
kidney stonessiliconeureteral stentureteroscopyurolithiasis

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Area of Science:

  • Urology
  • Biomaterials Science

Background:

  • Ureteral stents are crucial for maintaining ureteral patency, particularly post-ureteroscopy for urolithiasis.
  • Technological advancements have significantly enhanced ureteral stent performance, improving patient comfort, durability, and resistance to encrustation and biofilm formation.

Purpose of the Study:

  • To provide a historical overview of ureteral stent development.
  • To summarize recent advancements in ureteral stent designs and materials.
  • To review clinical data supporting the advantages of current ureteral stents for urologists.

Main Methods:

  • Literature review of historical and recent publications on ureteral stents.
  • Analysis of technological innovations in stent design, materials, and performance characteristics.
  • Synthesis of clinical evidence on the efficacy and patient outcomes associated with new ureteral stents.

Main Results:

  • Ureteral stent technology has evolved considerably, addressing limitations of earlier designs.
  • Newer stents offer improved biocompatibility, reduced migration, and enhanced resistance to encrustation and biofilm.
  • Clinical data supports the benefits of advanced ureteral stents in improving patient outcomes.

Conclusions:

  • Understanding the evolution and current state of ureteral stent technology is vital for optimal patient care.
  • Recent ureteral stent designs offer significant advantages over older models.
  • Continued innovation in ureteral stents promises further improvements in managing urological conditions.