Damage Attributable to Extracorporeal Shockwave Lithotripsy and Deposition of Calcium Oxalate Crystals on Ureteral Stents

1997 ◽  
Vol 11 (2) ◽  
pp. 113-118 ◽  
Author(s):  
RYOSUKE IKEDA ◽  
KOJI SUZUKI ◽  
RYUZO TSUGAWA
Keyword(s):  
Calcium Oxalate ◽  
Extracorporeal Shockwave Lithotripsy ◽  
Shockwave Lithotripsy ◽  
Ureteral Stents ◽  
Calcium Oxalate Crystals ◽  
Extracorporeal Shockwave ◽  
Oxalate Crystals

Extracorporeal shockwave lithotripsy in the treatment of encrusted ureteral stents

2010 ◽  
Vol 63 ◽  
pp. 84-86
Author(s):  
Catalin Pricop ◽  
James C. Williams JR ◽  
Catalin Ciuta ◽  
Dan Mischianu
Keyword(s):  
Extracorporeal Shockwave Lithotripsy ◽  
Shockwave Lithotripsy ◽  
Ureteral Stents ◽  
Extracorporeal Shockwave

scholarly journals COMPARATIVE EFFICACY OF EXTRACORPOREAL SHOCKWAVE LITHOTRIPSY AND RETROGRADE INTRARENAL SURGERY IN THE TREATMENT OF CALCIUM OXALATE NEPHROLITHIASIS

2021 ◽  
pp. 39-46
Author(s):  
V. L. Medvedev ◽  
A. A. Budanov ◽  
G. D. Dmitrenko ◽  
G. A. Palaguta ◽  
A. M. Rozenkranc
Keyword(s):  
Renal Function ◽  
Calcium Oxalate ◽  
Cystatin C ◽  
Extracorporeal Shockwave Lithotripsy ◽  
Shockwave Lithotripsy ◽  
Moderate Increase ◽  
Retrograde Intrarenal Surgery ◽  
Extracorporeal Shockwave ◽  
Group I ◽  
Group Ii

Objective To evaluate the results of extracorporeal shockwave lithotripsy (ESWL) versus retrograde intrarenal surgery (RIRS) for the treatment of calcium oxalate nephrolithiasis, as well as the damaging effects on renal function, taking into account the dynamics of blood cystatin C and urine beta2-microglobulin.Material and Methods Of 94 patients with calcium oxalate nephrolithiasis aged 23–78 included in the study,  42 patients were classified as having undergone ESWL (group I) and 52 patients as having undergone RIRS (group II). Group II patients were then stratified into subset 2A (n = 32) as having undergone RIRS through rigid ureteroscope and subset 2B (n = 20) as having undergone RIRS through flexible ureteroscope. We performed plain urography and nephrosonography at 24–48 hours postoperatively and unenhanced computed tomography 4–6 weeks after surgery. We measured concentrations of serum cystatin C and urinary beta2-microglobulin as a marker for kidney damage. In group I, samples of peripheral blood andurine were taken before and after the first, third sessions and 30 days after the last ESWL session. In group  II, samples were analyzed before surgery, on the first and 30th postoperative days.Results The average size of calculi in the group with RIRS was 16.91 ± 2.79 mm, in the group with ESWL  12.31 ± 2.27 mm. The need for reoperation after RIRS was 19.2%, which was lower than after ESWL. Stone-free effect (no stones, or residual stones less than 3 mm) was observed in 95% of cases in patients with RIRS, and in 78% with ESWL. Group I patients demonstrated an increase in the blood leukocytes total number more often than subsets 2A (rigid RIRS) and 2B (flexible RIRS) patients. Leukocyturia was also a more common complication in group I. In the RIRS group, there was no statistically significant change in the level of blood cystatin C and urine beta2-microglobulin, on the contrary, a moderate increase in the endogenous marker of cystatin C was noted after one ESWL session. The increase in urine beta2-microglobulin levels in patients after the first and third ESWL sessions was significantly higher than after RIRS.Conclusion Flexible RIRS may be suggested as the preferred procedure for patients requiring additional protection of renal function in the treatment of renal stones less than 20 mm. ESWL of stones less than 20 mm can be used as an alternative treatment, since it is characterized by a rather long period of stone eradication from the urinary tract, a high frequency of residual calculi after the procedure, and also has a damaging effect on the renal tissue.

An SEM study of raphide crystal initials in the leaves of vitis (grape)

1995 ◽  
Vol 53 ◽  
pp. 984-985
Author(s):  
H. J. Arnott ◽  
M. A. Webb ◽  
L. E. Lopez
Keyword(s):  
Calcium Oxalate ◽  
Water Soluble ◽  
Calcium Oxalate Crystals ◽  
Calcium Oxalate Crystal ◽  
Oxalate Crystals ◽  
Large Numbers ◽  
Sem Study ◽  
The Matrix ◽  
Crystal Cells ◽  
Crystal Idioblast

Many papers have been published on the structure of calcium oxalate crystals in plants, however, few deal with the early development of crystals. Large numbers of idioblastic calcium oxalate crystal cells are found in the leaves of Vitis mustangensis, V. labrusca and V. vulpina. A crystal idioblast, or raphide cell, will produce 150-300 needle-like calcium oxalate crystals within a central vacuole. Each raphide crystal is autonomous, having been produced in a separate membrane-defined crystal chamber; the idioblast''s crystal complement is collectively embedded in a water soluble glycoprotein matrix which fills the vacuole. The crystals are twins, each having a pointed and a bidentate end (Fig 1); when mature they are about 0.5-1.2 μn in diameter and 30-70 μm in length. Crystal bundles, i.e., crystals and their matrix, can be isolated from leaves using 100% ETOH. If the bundles are treated with H2O the matrix surrounding the crystals rapidly disperses.

1874: 5-Year-Follow-Up of Patients with Clinically Insignificant Residual Stones after Extracorporeal Shockwave Lithotripsy

2004 ◽  
Vol 171 (4S) ◽  
pp. 495-495
Author(s):  
Thomas Knoll ◽  
Yvonne Alfano ◽  
Stefan Kamp ◽  
Axel Haecker ◽  
Peter Aiken ◽  
...  
Keyword(s):  
Extracorporeal Shockwave Lithotripsy ◽  
Shockwave Lithotripsy ◽  
Extracorporeal Shockwave ◽  
Residual Stones
Sign in / Sign up

Export Citation Format

Share Document