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Related Concept Videos

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...
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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...
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)...

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Related Experiment Video

Updated: May 26, 2026

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
03:56

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy

Published on: September 13, 2022

'Microperc' micro percutaneous nephrolithotomy: evidence to practice.

Mahesh Desai1, Shashikant Mishra

  • 1Muljibhai Patel Urological Hospital, Nadiad, Gujarat, India. mrdesai@mpuh.org

Current Opinion in Urology
|January 10, 2012
PubMed
Summary
This summary is machine-generated.

Microperc, a novel percutaneous nephrolithotomy (PCNL) using a 16-gauge needle, aims to reduce invasiveness. While promising for shorter procedure times, its efficacy and safety require further research.

Related Experiment Videos

Last Updated: May 26, 2026

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
03:56

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy

Published on: September 13, 2022

Area of Science:

  • Urology
  • Minimally Invasive Surgery

Background:

  • Percutaneous nephrolithotomy (PCNL) traditionally involves significant invasiveness and morbidity.
  • Alternative treatments like extracorporeal shock wave lithotripsy and retrograde intrarenal surgery have limitations in efficacy, cost, and durability.

Purpose of the Study:

  • To explore the potential of 'microperc,' a miniaturized PCNL performed through a 16-gauge needle, to reduce procedure-related complications.
  • To evaluate the 'All-seeing needle' concept for safer and more precise renal access.

Main Methods:

  • Utilizing a 4.85-Fr (16-gauge) tract for PCNL, extending the 'All-seeing needle' concept.
  • Employing an optical needle to guide renal access, avoiding vital structures and confirming papillary location.
  • Performing a single-step renal access procedure to reduce insertion-to-lithotripsy time.

Main Results:

  • Microperc aims to decrease invasiveness and associated morbidity by reducing the tract size.
  • The optical needle facilitates accurate access, potentially preventing visceral injury.
  • This technique offers a novel, single-step renal access method with potentially shorter procedure durations.

Conclusions:

  • Current evidence on microperc's efficacy and safety is limited, with few published studies.
  • Further prospective and multicentric research is necessary to establish its role.
  • Microperc remains an experimental procedure requiring additional investigation before widespread adoption.