814 Predictive role of renal resistive index in stone clearance in the extracorporeal shockwave lithotripsy of upper urinary tract stones

Extracorporeal shockwave lithotripsy (ESWL) is a commonly used procedure for kidney stones and ureters because it is a non-invasive, effective, and first-line therapy of the upper urinary tract. The presence of side effects is still being evaluated in order to reduce the incidence of both acute and chronic. One of the methods used is the measurement of Resistive Index (RI) in the area of ESWL. To provide a description of the difference in the value of RI in the interlobar artery that is near and distant from the stones at before and after ESWL. There were 15 samples with clinical kidney stones to be performed with ESWL at IIU and fulfilled inclusion criteria from June to September 2012. Paired sample t-test was conducted to assess the difference of RI value based on the distance of interlobar artery from stones between pre and post ESWL. Sex of the samples in this study consisted of 66.7% male and 33.3% female with mean age of 45.9±8.4 years (between 32-59 years old) and the highest percentage was 40% in the age range of 40-49 years old. There was a significant difference between the RI value of the area near the stones at pre-ESWL and an hour post-ESWL. While there was no significant difference between the RI value of the area that was away from the stones at pre and post ESWL. There was a significant difference between RI values based on the distance of interlobaris artery from stones at pre and post ESWL.

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Outcome of Extracorporeal Shockwave Lithotripsy as Monotherapy in Upper Urinary Tract Lithiasis

Nepal Journal of Health Sciences ◽

10.3126/njhs.v1i2.42377 ◽

2021 ◽

Vol 1 (2) ◽

pp. 38-41

Author(s):

Dipak Kumar Thakur

Keyword(s):

Urinary Tract ◽

Success Rate ◽

College Teaching ◽

Upper Urinary Tract ◽

Extracorporeal Shockwave Lithotripsy ◽

Shockwave Lithotripsy ◽

Female Ratio ◽

Extracorporeal Shockwave ◽

Urinary Tract Calculi ◽

Upper Urinary Tract Calculi

Introduction: Due to its non-invasive nature, extracorporeal shockwave lithotripsy (ESWL) is the preferred treatment modality for uncomplicated renal and ureteral stone < 20 mm in diameter. The success rate of it ranges from 46% to 91% depending on various factors. Objective: To assess the outcome of ESWL as monotherapy in uncomplicated solitary renal and upper ureteric calculus ranging from 10mm to 20mm. Methods: In this retrospective study, the records of 34 patients who underwent Extracorporeal shockwave lithotripsy ESWL inBirat Medical College – Teaching Hospital over a period of one and a half years were reviewed to assess the outcome in terms of stone free rate and complication rate. Results: Mean age of the patients was 30.57±8.44 years and mean calculus size was 14.47±2.68 mm (range 10-20mm). The male and female ratio was 2:1. The success rate was higher for pelvic (83.33%) and upper calyceal (75%) and upper ureteric calculi (75%) compared to other calyces. Clinically significant residual fragment (CSRF) was the most common problem after ESWL (23.33%) at three months after the procedure. Conclusions: The outcome of ESWL as monotherapy for upper urinary tract calculi is acceptable in selected cases three months after the procedure. Keywords: Extracorporeal shockwave lithotripsy; outcome; upper urinary tract calculi.

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