Shockwave lithotripsy (SWL) treatment is a common, non-invasive urology procedure used for kidney stones nearly every day throughout the UK. In this study the team evaluated factors affecting treatment success of SWL treatment. The prospective data were collected from 2013 to 2021. CT of kidney, ureter and bladder (KUB) was used for stone burden (location / size / number of stones). SWL with the Storz MODULITH® SLK machine was used in all cases to treat. The total amount of energy of each stone was recorded. This was called the Storz Medical Lithotripsy Index (SMLI). About 1200 cases were treated with the body mass index (BMI) range being 19-38. The success of the procedure was regarded as: 1) Stone free and 2) Residual fragments less than 4mm. The main factors for success were the number of shocks required and SMLI. The study showed that SMLI per stone size is a statistically significant factor for success in this series.
