scholarly journals Value of Hounsfield Unit in Prediction of Stone Free Rate in Management of Upper Urinary Tract Stones Using Ct and Eswl

2017 ◽  
Vol 2 (5) ◽  
Author(s):  
Abdelazim Hussein Khalafalla
Keyword(s):  
Urinary Tract ◽  
Hounsfield Unit ◽  
Upper Urinary Tract ◽  
Stone Free Rate ◽  
Urinary Tract Stones ◽  
Free Rate

scholarly journals The use of a ureteral access sheath does not improve stone-free rate after ureteroscopy for upper urinary tract stones

2013 ◽  
Vol 32 (1) ◽  
pp. 229-232 ◽  
Author(s):  
Gaetan Berquet ◽  
Paul Prunel ◽  
Grégory Verhoest ◽  
Romain Mathieu ◽  
Karim Bensalah
Keyword(s):  
Urinary Tract ◽  
Upper Urinary Tract ◽  
Ureteral Access Sheath ◽  
Access Sheath ◽  
Stone Free Rate ◽  
Urinary Tract Stones ◽  
Free Rate

scholarly journals Treatment of upper urinary tract stones with flexible ureteroscopy in children

2018 ◽  
Vol 13 (3) ◽  
Author(s):  
Jing Xiao ◽  
Xiangyu Wang ◽  
Jun Li ◽  
Miaomiao Wang ◽  
Tiandong Han ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Operation Time ◽  
Upper Urinary Tract ◽  
Laser Lithotripsy ◽  
Holmium Laser ◽  
Flexible Ureteroscopy ◽  
Holmium Laser Lithotripsy ◽  
Stone Free Rate ◽  
Urinary Tract Stones ◽  
Free Rate

Introduction: This single-centre, retrospective study aimed to assess the efficacy and safety of flexible ureteroscopy (FURS) combined with holmium laser lithotripsy in treating children with upper urinary tract stones. Methods: From June 2014 to October 2015, a total of 100 children (74 boys and 26 girls) with upper urinary tract stones were treated using FURS. A 4.7 Fr double-J stent was placed two weeks before operation. Patients were considered stone-free when the absence of residual fragments was observed on imaging studies. The preoperative, operative, and postoperative data of the patients were retrospectively analyzed. Results: A total of 100 pediatric patients with a mean age of 3.51±1.82 years underwent 131 FURS and holmium laser lithotripsy. Mean stone diameter was 1.49±0.92 cm. Average operation time was 30.8 minutes (range 15–60). The laser power was controlled between 18 and 32 W, and the energy maintained between 0.6 and 0.8 J at any time; laser frequency was controlled between 30 and 40 Hz. Complications were observed in 69 (69.0 %) patients and classified according to the Clavien system. Postoperative hematuria (Clavien I) occurred in 64 (64.0 %) patients. Postoperative urinary tract infection with fever (Clavien II) was observed in 8/113 (7.1%) patients. No ureteral perforation and mucosa avulsion occurred. The overall stone-free rate of single operation was 89/100 (89%). Stone diameter and staghorn calculi were significantly associated with stone-free rate. Conclusions: FURS and holmium laser lithotripsy is effective and safe in treating children with upper urinary tract stones.

scholarly journals Laser lithotripsy using dusting technique (low energy, high frequency) for symptomatic upper urinary tract stones

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
A. Ashmawy ◽  
M. Khedr ◽  
I. R. Saad ◽  
S. Zamel ◽  
A. Kassem
Keyword(s):  
Urinary Tract ◽  
High Frequency ◽  
Hounsfield Unit ◽  
Spiral Ct ◽  
Upper Urinary Tract ◽  
Laser Lithotripsy ◽  
Low Energy ◽  
Stone Size ◽  
Stone Free Rate ◽  
Free Rate

Abstract Background A prospective study to assess the feasibility of stone dusting technique (low energy and high frequency) during laser lithotripsy in symptomatic upper urinary tract |(UUT) stones. Methods Sixty patients with symptomatic single or multiple UUT stones less than 3 cm in diameter were included. Patients with coagulation disorders and active UTIs were excluded. All patients were clinically evaluated and underwent non-contrast spiral CT (NCSCT) to detect stone site, size, number, Hounsfield unit. A rigid or flexible ureteroscope was used with stone dusting using the Ho: YAG laser at low-energy and high-frequency (0.5 J & 20 Hz) set. Operative and fluoroscopy time, total energy delivered, type of stent, hospitalization time, complications and its grade, and stone-free rate using NCSCT after 4 weeks were recorded. Results The mean stone size ± SD (range) was 1.55 ± 0.55 (0.5–3) cm; out of sixty patients (50 with single stone and 10 with multiple stones), fifty-five patients were stone-free at 4 weeks. Complications had occurred in 11 patients (eight with grade I, one with grade II, and two with grade IIIa) according to Clavien–Dindo grading of surgical complications. Stone size was the only parameter which correlated significantly with stone-free rate. No significant correlation was found between incidence of complications and other parameters (stone size, site, BMI, age and operative time). Conclusions Stone dusting technique is feasible, safe and effective in management of UUT stones.

scholarly journals RELATIONSHIP BETWEEN RENAL STONE LOCATION WITH STONE-FREE RATE AFTER ESWL

2017 ◽  
Vol 24 (1) ◽  
Author(s):  
Laudeo Dhanaba Siregar ◽  
Syah Mirsya Warli
Keyword(s):  
Urinary Tract ◽  
Renal Stone ◽  
Stone Composition ◽  
Patient Medical Record ◽  
Extracorporeal Shock Wave ◽  
Stone Free Rate ◽  
Urinary Tract Stones ◽  
Retrospective Study Design ◽  
The Relationship ◽  
Free Rate

Objective: This study aims to evaluate the relationship between stone location and stone location in kidney stone to the stone-free rate after Extracorporeal Shock Wave Lithotripsy (ESWL) procedure. Material & method: This is a non-experimental research using descriptive analytic method with retrospective study design that takes data from patient medical record diagnosis of urinary tract stones and ESWL action from January 2011 until December 2013 in the Department of Surgery Division of Urology General Hospital H. Adam Malik, Medan. Results: It was found that if the size of the stone only is the only factor that counts in patients who get a urinary tract stones ESWL therapy, it is not found a statistically significant relationship. Stone location plays an important role in the incidence of stone-free patients with urinary tract stones ESWL therapy. Conclusion: ESWL therapeutic efficacy in the treatment of patients with kidney stones is not only determined by the size and location of the stone, but is also determined by the number of stones, stone composition, frequency ESWL is used, and the thickness of the skin of the patient.

Flexible ureterorenoscopy to treat upper urinary tract stones in children

Urolithiasis ◽  
2018 ◽  
Vol 48 (1) ◽  
pp. 57-61 ◽  
Author(s):  
Ahmed Suliman ◽  
Tariq Burki ◽  
Massimo Garriboli ◽  
Jonathan Glass ◽  
Arash Taghizadeh
Keyword(s):  
Urinary Tract ◽  
Upper Urinary Tract ◽  
Flexible Ureterorenoscopy ◽  
Urinary Tract Stones

scholarly journals The effect of urinary tract calculosis to levels of low molecular inhibitors of crystallization in the urine

2006 ◽  
Vol 134 (1-2) ◽  
pp. 40-43
Author(s):  
Dragica Milenkovic ◽  
Natasa Lalic
Keyword(s):  
Urinary Tract ◽  
Shock Waves ◽  
Stone Formation ◽  
Upper Urinary Tract ◽  
Therapeutic Procedure ◽  
Residual Stone ◽  
Extracorporeal Shock Waves ◽  
Urinary Levels ◽  
Urinary Tract Stones ◽  
Pre Treatment

The incidence of urinary tract calculosis continuously progresses. The triggering event in the process of stone formation is decreased urinary level of crystallizing inhibitors. The aim of our study was to investigate whether the existing stone or applied therapeutic procedure - extracorporeal shock waves lithotripsy (ESWL) - has effect to urinary levels of Mg, citrate and pyrophosphate. Study included 128 patients with the upper urinary tract stones. ESWL using the Lithostar (Siemens) device was used as a mode of treatment. Out of all patients, 76 (59%) were free of stone particles before 1 month, while 52 (41%) had residual stone fragments even 3 months after ESWL. Mg, citrate and pyrophosphate were measured in 24hurine specimens: before, between days 2 and 3, as well as 1 and 3 months after ESWL. The analysis of the results revealed that stone itself had no effect on urinary crystallizing inhibitors. Detected increased urinary levels of Mg, citrate and pyrophosphate after ESWL, compared with pre-treatment values, could be attributed to applied therapeutic procedure.

Evaluating Region of Interest Measurement Strategies to Characterize Upper Urinary Tract Stones on Computerized Tomography

2017 ◽  
Vol 197 (3 Part 1) ◽  
pp. 715-722 ◽  
Author(s):  
Vikram M. Narayan ◽  
Shahab Bozorgmehri ◽  
Joseph H. Ellen ◽  
Muna T. Canales ◽  
Benjamin K. Canales ◽  
...  
Keyword(s):  
Urinary Tract ◽  
Computerized Tomography ◽  
Region Of Interest ◽  
Upper Urinary Tract ◽  
Urinary Tract Stones ◽  
Measurement Strategies
Sign in / Sign up

Export Citation Format

Share Document