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对63枚尿石在体外条件下进行实验,探讨尿石性质对结石碎裂的影响。结果表明:密度、CT值、钙含量与冲击次数呈正相关。膀阬结石密度、钙含量明显偏低,冲击次数明显较少。胱氨酸结石难于震碎,可能不适合ESWL治疗。讨论了结石在冲击波下碎裂机理、结石脆性的主要影响因素及其临床意义。
Sixty-three uroliths were tested in vitro to investigate the effect of uroliths on stone fragmentation. The results showed that density, CT value and calcium content were positively correlated with the number of impact. Bladder stone density, calcium content was significantly lower, the impact frequency was significantly less. Cystine stones are hard to shatter and may not be suitable for ESWL treatment. The mechanism of stone fragmentation under shock wave, the main influencing factors of stone fragility and its clinical significance are discussed.