A comparison of stone free rate between a diuretic and a control group of patients undergoing extracorporeal shock wave lithotripsy: a prospective, randomized, double-blind, placebo-controlled trial

Authors

  • Peerapat Cheewaisrakul Division of Urology, Department of Surgery, Chaophraya Yommarat Hospital, Suphanburi, Thailand

DOI:

https://doi.org/10.52786/isu.a.36

Keywords:

Extracorporeal shock wave lithotripsy, diuretic, stone free rate

Abstract

Objectives: To compare the stone free rate and treatment success rate between a diuretic group of patients undergoing extracorporeal shock wave lithotripsy (ESWL) and a control placebo group (normal saline solution).

Materials and Methods: One hundred and ninety-four patients with solitary renal calculi or ureteric calculi size of 5 mm or over were prospectively randomized into 2 groups. Ninety-seven patients in the first group (diuretic group) underwent ESWL after intravenous injection of furosemide 40 mg, and 97 patients in the second (control) group received normal saline solution 4 ml instead of furosemide prior to ESWL. The treatment protocol included 3,000 shockwaves per patient in each session with the energy beginning at 8 and progressing up to 15 kilovolts. A maximum of 3 ESWL sessions were permitted per patient. The primary outcome was stone free rate, and the secondary outcome was treatment success rate at 3 months after the first ESWL treatment.

Results: The stone free rate was 48.5% compared to 50.5% for diuretic group and control group respectively and the treatment success rate was 81.4% compared to 64.9%. The difference in stone free rate was not statistically significantly different (p = 0.87), however the treatment success was, p = 0.01.

Conclusion: A combination of diuretic therapy followed by ESWL improves the treatment success rate compared with standard ESWL therapy alone.

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Published

2021-11-30

How to Cite

Cheewaisrakul, P. (2021). A comparison of stone free rate between a diuretic and a control group of patients undergoing extracorporeal shock wave lithotripsy: a prospective, randomized, double-blind, placebo-controlled trial. Insight Urology, 42(2), 138–143. https://doi.org/10.52786/isu.a.36

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Original article