Number №1, 2020 - page 73-78

Prognosis of percutaneous nephrolithotripsy results using specialized evaluation techniques DOI: 10.29188/2222-8543-2020-12-1-73-78

For citation: Merinov D.S., Gurbanov Sh.Sh., Artemov A.V., Epishov V.A., Arustamov L.D. Prognosis of percutaneous nephrolithotripsy results using specialized evaluation techniques. Experimental and clinical urology 2020;(1):73-78
Merinov D.S., Gurbanov Sh.Sh., Artemov A.V., Epishov V.A., Arustamov L.D.
Information about authors:
  • Merinov D.S. – PhD, head of endourology department of Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiological Centre of Ministry of health of Russian Federation, ORCID 0000-0001-5966-9233
  • Gurbanov Sh.Sh. – PhD, senior researcher of endourology department of Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiological Centre of Ministry of health of Russian Federation
  • Artemov A.V. – PhD, head of the operating unit with a sterilization room, of Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiological Centre of Ministry of health of Russian Federation
  • Arustamov L.D. – MD, PhD, researcher of of the department of X-ray shock wave remote crushing of stones, Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiological Centre of Ministry of health of Russian Federation
  • Epishov V.A. – MD, PhD, urologist of Institute of Urology and Interventional Radiology – branch of the National Medical Research Radiological Centre of Ministry of health of Russian Federation
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Background. The efficacy of percutaneous nephrolithotripsy is currently assessed using computed tomography, whose wide implementation in clinical practice is limited by economic reasons and the risk of high radiation doses during the disease monitoring period. Aim. To demonstrate the high predictive precision of nomograms, which are valuable for assessing the expected efficacy of interventions.

Materials and methods. Publications devoted to 4 main systems used to assess the expected results of percutaneous nephrolithotripsy – Guy’s, S.T.O.N.E., CROES and S-ReSC – were reviewed. In total, 37 publications were analysed.

Results. The Guy’s scale for the evaluation of concrements provided 79.6% precision of the evaluation of the clinical effectiveness of percutaneous nephrolithotripsy by the results of the multivariate analysis as an isolated factor. The S.T.O.N.E. index had a 71.6-80% mean summed effectiveness by the studies dedicated to the verification of the S.T.O.N.E. index under 83.1% of predictive precision. The predictive value of the GROES nomogram was 0.76, which is significantly higher than the above-mentioned Guy’s scale (0.69). The statistical precision of the GROES nomogram was 71.5% for a successful intervention and 64.8% for the complete removal of the concrement from the kidney. The predictive precision of the S-ReSC system in the evaluation of the effectiveness of the treatment was 0.86, which was confirmed by a multivariate analysis.

Conclusions. The obtained results demonstrate a high prognostic value of different evaluation systems. However, the efficacy of all these systems depend on the subjective interpretation of the most important nephrolithometric parameters performed by specialists.

Conflict of interest. The authors declare no conflict of interest.

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percutaneous nephrolithotripsy, Guy’s scale, S.T.O.N.E. index, CROES nomogram, S-ReSC system of evaluation, concrement removal, kidney stone disease, residual fragments

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