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Year : 2020  |  Volume : 33  |  Issue : 4  |  Page : 1352-1357

Predictive factors of renal and ureteric stone disintegration by the extracorporeal shock wave lithotripsy

1 Department of Urology, Faculty of Medicine, Menoufia University, Menoufia, Egypt
2 Department of Urology at Ministry of Health, Shebin El-Kom, Menoufia, Egypt

Correspondence Address:
Mohamed G Elmarakbey
MBBCh, Berket El-Sabae, Menoufia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/mmj.mmj_122_20

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Objective The objective of this work was to evaluate possible predictive variables for the outcome of shock wave lithotripsy of renal and ureteric stones. Background Nephrolithiasis is a common disease affecting the population with a peak incidence at around the third to fourth decade of life. The prevalence of stone disease is increasing with increasing annual expenditure. Extracorporeal shock wave lithotripsy (ESWL) is the preferred treatment for renal and several ureteral calculi owing to its noninvasive characteristic and its favorable clinical outcome. Patients and methods This study was carried out on 100 patients who are supposed to be treated with ESWL and diagnosed with renal or ureteric stone. All cases were evaluated before, during, and after the procedure as follows: full medical history, clinical examination, laboratory investigations, and radiological investigations. Results A total of 91 of the studied patients were males. Age of the studied patients ranged from 24 to 58 years, with a mean of 38.72 years. There is a significant relation between need for second session and presence of tenderness, hypertension and stone site, international normalized ratio, operation duration, complaint duration, stone size, and Hounsfield unit. Presence of renal stone significantly protects from that risk. There are significant relations between postoperative complications and smoking, BMI, urine analysis, hypertension, and past history of stone. There are significant relations between postoperative complications and need for second session, serum creatinine, operation duration, and stone size. Conclusion ESWL is an effective and reasonable initial therapy in the management of ureteral stones 2 cm or less at all levels of the ureter.

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