The STONE score is a clinical prediction rule for uncomplicated ureteral stone. The name "STONE" is an acronym derived from the five variables used in the score: Sex, Timing, Origin, Nausea, and Erythrocytes. This calculator is used in the adult population presenting with suspected renal colic due to a ureteral stone.
The STONE score is used to predict the likelihood of a ureteral stone, as well as the stone's size and location. It can help clinicians decide whether a patient needs immediate intervention or can be managed conservatively. The score ranges from 0 to 13, with higher scores indicating a higher likelihood of a ureteral stone.
Exclusion criteria for the STONE score include patients with known urological anomalies, previous urological surgeries, or current urinary tract infections. It is also not applicable in pregnant women or in patients with other known causes of abdominal pain.
Reference
Arash Safaie, Mojdeh Mirzadeh, Ehsan Aliniagerdroudbari et al. A clinical prediction rule for uncomplicated ureteral stone: The STONE score; a prospective observational validation cohort study. Turk J Emerg Med. 2019 Apr 25;19(3):91-95.
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