II. Indications
- Suspected uncomplicated Ureteral Stone in patients with normal Renal Function
III. Contraindications
IV. Criteria
- Gender
- Score 0: Female Gender
- Score 2: Male Gender
- Duration
- Score 0: Lasting >24 hours
- Score 1: Lasting 6 to 24 hours
- Score 3: Lasting <6 hours
- Nausea and Vomiting
-
Hematuria (on Urine Dipstick)
- Score 0: None
- Score 3: Present
- Race (Optional)
- Score 0: Black
- Score 3: Non-Black
V. Interpretation
- Score 0 to 5: Low Risk for Stone (9.2%)
- Alternative diagnosis is more likely
- Score 6 to 9: Moderate Risk for Stone (51.3%)
- Consider expectant management without CT if Hydronephrosis on Bedside Ultrasound (after hydration) in otherwise healthy patient
- Bedside Ultrasound may also be used to help exclude other important diagnoses (e.g. AAA, acute cholelithaisis)
- Score 10 to 13: High Risk for Stone (88.6%)
- Consider expectant management without CT in pain-controlled patients at low risk for alternative diagnosis
- Bedside Ultrasound may increase accuracy by identifying Hydronephrosis and excluding alternative diagnoses
- Low dose CT may be considered if stone localization and size is needed
VI. Resources
- STONE Score for Uncomplicated Ureteral Stone