Department of Urology, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd, Zhongshan Dist, Taipei, 104, Taiwan.
School of Medicine, MacKay Medical College, New Taipei City, Taiwan.
World J Urol. 2019 May;37(5):931-935. doi: 10.1007/s00345-018-2464-7. Epub 2018 Aug 28.
To compare the efficacy and outcomes of shock wave lithotripsy (SWL) for upper urinary tract stones with an electrohydraulic (EH) and an electromagnetic (EM) lithotriptor in a single center.
The medical records of 272 patients with upper urinary tract stones ≤ 2 cm in size who underwent SWL with either the Medispec E3000 EH lithotriptor (179 cases) or the Medispec EM1000 EM lithotriptor (93 cases) were reviewed. The demographic data, stone parameters, stone-free rates, and retreatment rates were analyzed.
The EH group had a higher stone-free rate (53.6 vs. 30.1%, p < 0.001) and a lower retreatment rate (32.4 vs. 61.2%, p < 0.001) for renal and upper third ureteral stones than the EM group. The stone-free rates for renal stones < 1 cm (55.5 vs. 32.2%, p = 0.045), ureteral stones < 1 cm (64.5 vs. 42.1%, p = 0.028), and renal stones ≥ 1 cm (43.1 vs. 0%, p = 0.03) were higher in the EH group. Two patients in the EH group had a renal hematoma needing hospitalization after SWL. There were no complications in the EM group.
The Medispec E3000 EH lithotriptor had higher stone-free rates and lower retreatment rates than the Medispec EM1000 EM lithotriptor for renal stones < 2 cm and ureteral stones < 1 cm. Complications were rare.
比较在单一中心使用电磁式（EM）碎石机和液电式（EH）碎石机治疗上尿路结石的疗效和结果。
回顾性分析 272 例接受上尿路结石（大小≤2cm）体外冲击波碎石术（SWL）治疗的患者的病历资料，其中 179 例使用 Medispec E3000 EH 碎石机，93 例使用 Medispec EM1000 EM 碎石机。分析患者的人口统计学资料、结石参数、结石清除率和再次治疗率。
EH 组肾结石和上段输尿管结石的结石清除率（53.6%比 30.1%，p<0.001）和再次治疗率（32.4%比 61.2%，p<0.001）均高于 EM 组。肾结石<1cm（55.5%比 32.2%，p=0.045）、输尿管结石<1cm（64.5%比 42.1%，p=0.028）和肾结石≥1cm（43.1%比 0%，p=0.03）的结石清除率在 EH 组更高。EH 组有 2 例患者在 SWL 后出现肾血肿需住院治疗。EM 组无并发症发生。
对于<2cm 的肾结石和<1cm 的输尿管结石，Medispec E3000 EH 碎石机的结石清除率和再次治疗率均高于 Medispec EM1000 EM 碎石机，并发症少见。
