CORRELATION BETWEEN S.T.O.N.E NEPHROLITHOMETRY SCORING IN PREDICTING FREE-STONE RATE AFTER PERCUTANEOUS NEPHROLITHOTOMY
Abstract: To investigate
free-stone rate after Percutaneous Nephrolithotomy (PNL) using S.T.O.N.E
nephrolitometry scoring system, with regards of stone size (S), skin-to-stone
distance (T), obstruction degree (O), number of calyx involved (N), and stone
density (E) in Non Contrast CT Scan (NCCT). Material & methods: This is an
analytic observational study on patients with renal stones undergoing PNL. All
patients underwent NCCT before and after PNL; each variables was measured and
counted for a total score. Post-operative evaluation was done using NCCT.
Results: Thirty patients met inclusion criteria, 19 (63.3%) were stone-free,
and 11 (36.7%) were with residual stone. Among the five variables, stone size
(p=0.005), number of calyx involved (p=0.002) affected the outcome of surgery,
while skin-to-stone distance, obstruction degree, and stone density did not.
The overall total score of S.T.O.N.E nephrolithometry is correlated with the
outcome of PNL (p=0.001). Conclusion: S.T.O.N.E nephrolithometry is a simple
scoring system, while it is also easy to use, and can be used to predict the
free-stone rate after PNL.
Keywords: Percutaneous
nephrolithotomy; scoring system; renal stone; non contrast CT Scan
Author: Karinda triharyu
caesari putri, Tarmono Djojodimejo, Fikri Rizaldi, Sunaryo Hardjowijoto
Journal Code: jpkedokterangg170018
