The Efficacy of Guy's Stone Score for Predicting the Stone-Free and Complication Rates in Children Treated by Percutaneous Nephrolithotomy

Current status of nomograms and scoring systems in paediatric endourology: A systematic review of literature

“…4 further studies were included as they externally validated the 2 scoring systems specific to SWL [13][14][15][16] . 3 adult endourology tools, all specific to PCNL, were identified as having been investigated in 11 studies using paediatric participants [5][6]9,[17][18][19][20][21][22][23][24][25][26][27] . These studies assessed 1 tool or multiple tools in comparison to each other.…”

“…A key difference is that it includes all the stones in the affected renal unit and not only the target stone. 10 Studies have subsequently investigated the efficacy of GSS in paediatric patients 9,[18][19][20][21][22][23][24][25][26] . 5 of these studies were comparative to other nomograms and a detailed discussion of these results is included further on in the paper 9,[21][22][23][24] .…”

“…5 of these studies were comparative to other nomograms and a detailed discussion of these results is included further on in the paper 9,[21][22][23][24] . The remaining 5 studies considered GSS independently [18][19][20][25][26] . Results were supportive for the predictive accuracy of SFR in 4 studies, with Yadav et al and Ebeid et al also finding a significant correlation between GSS and complication rate [18][19][20]26 .…”

“…The remaining 5 studies considered GSS independently [18][19][20][25][26] . Results were supportive for the predictive accuracy of SFR in 4 studies, with Yadav et al and Ebeid et al also finding a significant correlation between GSS and complication rate [18][19][20]26 . However, these findings are contradicted by Goyal et al, who failed to demonstrate a significant association between GSS and complications on multivariate analysis in their study looking exclusively at pre-operative variables and association with complications 25 .…”