Related Experiment Video
Updated: Sep 12, 2025
03:56
A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
Published on: September 13, 2022
2.5K
Dusting versus fragmentation for large proximal ureteral stones during flexible ureteroscopy: A prospective
Samer Morsy1, Ahmed Essam1, Islam Nasser1
1Kasr Al Ainy Hospital, Cairo University, Cairo, Egypt.
Current Urology
|August 6, 2025
Summary
Stone dusting and fragmentation using Ho:YAG laser lithotripsy are effective for proximal ureteral stones. The dusting technique demonstrated a higher stone-free rate and no complications compared to fragmentation.
Area of Science:
- Urology
- Endourology
- Laser Lithotripsy
Background:
- Endoscopic technology enables effective treatment of urinary tract stones.
- Laser lithotripsy offers stone dusting, fragmentation, and active removal for ureteral stones.
- Limited prospective randomized studies compare these ureteral stone treatment modalities.
Purpose of the Study:
- To compare the efficacy and safety of stone dusting versus fragmentation for proximal ureteral stones using Ho:YAG laser lithotripsy.
Main Methods:
- A randomized prospective comparative study included 60 patients with proximal ureteral stones.
- Patients were divided into two groups: Group 1 (stone dusting, n=30) and Group 2 (stone fragmentation, n=30).
- Ho:YAG laser parameters were set differently for dusting (low energy, high frequency) and fragmentation (high energy, low frequency).
Main Results:
- The stone-free rate was 96.6% for dusting and 86.6% for fragmentation.
- Mean operative time was 87.6 minutes for dusting and 80.4 minutes for fragmentation.
- The dusting group had no postoperative complications, while the fragmentation group had a 13.3% complication rate.
Conclusions:
- Both stone dusting and fragmentation techniques are effective for proximal ureteral stones.
- Stone dusting showed a higher stone-free rate and a better safety profile.
- Further research may support dusting as a preferred method for ureteral stone treatment.
More Related Videos
06:39Technical Modification of the Terminal Ureter During Total Transperitoneal Laparoscopic Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma
Published on: November 22, 2019
7.8K
07:17Photoselective Vaporesection of the Prostate via an End-firing Lithium Triborate Crystal Laser
Published on: May 9, 2018
8.1K
Related Concept Videos
01:25Urinary Tract Calculi VI: Surgical Management
27
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...
27
01:28Urologic Endoscopic Procedure: Cystoscopic Examination
350
Meaning of Cystoscopic Examination:Cystoscopy is an essential diagnostic tool in urology that is used to assess the structure and function of the genitourinary system. It provides a direct view of the urethra, bladder, and, in some cases, the ureteral openings. This procedure helps detect structural abnormalities, infections, cancers, and blockages in the urinary tract. There are two types of cystoscopy:Flexible cystoscopy is commonly performed in outpatient settings due to its less invasive...
350
01:30Urinary Tract Calculi III: Medical Management
23
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)...
23
01:22Imaging Studies V: Intravenous Urography and Retrograde Pyelography
155
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...
155
01:28Imaging Studies I: Kidney, Ureter, and Bladder Studies
40
Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...
40
01:28Urinary Tract Calculi V: Nursing Management
28
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...
28