The S.T.O.N.E. Score: A new assessment tool to predict stone free rates in ureteroscopy from pre-operative radiological features
Int. braz. j. urol
; 40(1): 23-29, Jan-Feb/2014. tab, graf
Article
in En
| LILACS
| ID: lil-704173
Responsible library:
BR1.1
ABSTRACT
Objective:
To develop a user friendly system (S.T.O.N.E. Score) to quantify and describe stone characteristics provided by computed axial tomography scan to predict ureteroscopy outcomes and to evaluate the characteristics that are thought to affect stone free rates. Materials andMethods:
The S.T.O.N.E. score consists of 5 stone characteristics (S)ize, (T)opography (location of stone), (O)bstruction, (N)umber of stones present, and (E)valuation of Hounsfield Units. Each component is scored on a 1-3 point scale. The S.T.O.N.E. Score was applied to 200 rigid and flexible ureteroscopies performed at our institution. A logistic model was applied to evaluate our data for stone free rates (SFR).Results:
SFR were found to be correlated to S.T.O.N.E. Score. As S.T.O.N.E. Score increased, the SFR decreased with a logical regression trend (p < 0.001). The logistic model found was SFR=1/(1+e.Key words
Full text:
1
Collection:
01-internacional
Database:
LILACS
Main subject:
Tomography, X-Ray Computed
/
Ureteroscopy
/
Urolithiasis
Type of study:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Int. braz. j. urol
Journal subject:
UROLOGIA
Year:
2014
Document type:
Article
Affiliation country:
United States
Country of publication:
Brazil