the metabolic syndrome seems to be a risk factor for stone formation of any composition 8, 9 and may be a factor in the changing gender prevalence of stone disease. 10 its impact on stone composition seems to be mainly in the arena of uric acid stone disease. 11, 12, 13, 14, 15, 16 the causality behind the aforementioned relationships is less .
احصل على السعرPatients who underwent kidney stone surgeries (between ), were followed for > 1 year, and had ≥ 1 stone composition analyses were included in our analysis. Surgical stone recurrence (repeat surgery) was defined as the second surgery on the same kidney unit. Recurrencefree survival analysis was used. Results
احصل على السعرThe majority of stones contained calcium (%), combined with oxalate (%), phosphate (%), and carbonate (%). Some stones (%) contained a mixture of >1 negatively charged molecules. Urate (%), cysteine (%), and ammoniummagnesiumphosphate (%) constituted the rest.
احصل على السعرCystine stones have a high rate of recurrence due to genetic cystinuria. 33, 34 Consistent with their high recurrence rates, uric acid, struvite, brushite, and cystine stones became progressively more common among stone formers with each subsequent stone composition analysis.
احصل على السعرConclusion: Stone composition has a significant impact on the efficacy of RIRS in the management of 1 to 3 cm kidney stones. For 23 cm calcium oxalate dihydrate stones, uric acid stones, and...
احصل على السعرTo assess whether the stone composition affects the operative time of ureteroscopic holmium:yttriumaluminumgarnet laser lithotripsy (ULL) with active fragment retrieval. The chemical composition of a calculus is known to affect the efficacy with which it is fragmented by a device, such as pneumatic, laser, or shock wave lithotripter.
احصل على السعرUrinary calculi are one of the major urological diseases and they have the characteristics of high recurrence rates and impaired kidney function. 1 3 Analyzing the composition of urinary stones in a region is of great significance for the diagnosis, treatment, and prevention of calculi. Currently, infrared spectroscopy is the standard method used to analyze urinary stone components. 4 ...
احصل على السعرStone Compositionis a secondary power set for Guardians. "Stone Composition users can transform themselves into various forms of rock and stone to avoid harm. You are also able to harness the crushing force of earth to weaken your foes and protect your allies. Many of these powers need to be performed while on the ground." Power Tables Guardian
احصل على السعرEffect of stone composition on surgical stone recurrence: single center longitudinal analysis Authors Shuang Li 1, Viacheslav Iremashvili, Simone L Vernez, Kristina L Penniston, R Allan Jhagroo, Sara L Best, Sean P Hedican, Stephen Y Nakada Affiliation
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احصل على السعرHormonal status might play some role in the observed differences in stone composition. Older women, likely to be postmenopausal (, above age 50 years), have stone compositions quite similar to men of the same age. Analysis of two large cohorts of women suggests that kidney stone risk may increase after menopause ( 14, 15 ).
احصل على السعرWe studied the effects of stone composition, stone size, and scan collimation width on the measurement of attenuation in vitro. MATERIALS AND METHODS. One hundred twentyseven human urinary calculi of known composition and size were scanned at 120 kVp, 240 mA, and a 1:1 pitch at different collimations.
احصل على السعرLimestone is a sedimentary rock composed principally of calcium carbonate (calcite) or the double carbonate of calcium and magnesium (dolomite). It is commonly composed of tiny fossils, shell fragments and other fossilized debris. These fossils are frequently visible to the unaided eye on close examination of the stone surface, however this is ...
احصل على السعرTo assess whether the stone composition affects the operative time of ureteroscopic holmium:yttriumaluminumgarnet laser lithotripsy (ULL) with active fragment retrieval. The chemical composition of a calculus is known to affect the efficacy with which it is fragmented by a device, such as pneumatic, laser, or shock wave lithotripter.
احصل على السعرPreoperative determination of stone composition seems to be essential for optimal stone management. It is important for three reasons. Firstly, composition is related to hardness, which in turn affects the outcome of extracorporeal shockwave lithotripsy (ESWL); hard stones may be resistant to ESWL treatment.
احصل على السعرfurther, the chemical composition of an artificial stone largely affects moldability, and depending upon the size or blending ratio of natural stone powder particles blended in an artificial...
احصل على السعرStonefree rates were similar in all groups. The PL for the patients with CaP stones caused more postoperative fever and infection than the other groups (p=). CONCLUSION Though both PL and LL are effective in the treatment of CaOx and CaP stones, LL had a significantly shorter operation and hospitalization time and complication rates in ...
احصل على السعرStone composition can impact this, as a denser stone would require greater force for the same stone size. But research has shown there is no significant difference in density across stone types. 12, 13 Note this is true density vs radioopacity on computed tomography, which is often also referred to as density.
احصل على السعرThe prevalence of kidney stone disease is increasing worldwide. The recurrence rate of urinary stones is estimated to be up to 50%. Nephrolithiasis is associated with increased risk of chronic and end stage kidney disease. Diet composition is considered to play a crucial role in urinary stone formation. There is strong evidence that an inadequate fluid intake is the major dietary risk factor ...
احصل على السعرStone composition varied by geographical region. Conclusions. The most common stone composition was CaOx, followed by carbapatite, urate, struvite, and brushite. Stone composition differed significantly in patients grouped by gender, age, BMI, stone location, and geographical region.
احصل على السعرTechnological parameters of vibropressed finegrained concrete with raw stone siftings are developed. Methodologies for composition design of finegrained concrete with given workability are proposed. Possibility for producing macroporous lightweight concrete for walls and filtration materials, based on stone siftings fillers is shown.
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