Parekattil et al compared criteria used by different institutions for intervention in a patient with ureteral or renal calculus. The authors are from Cleveland Clinic, University of Arkansas, Universidade Estadual de Campinas (Brazil), Hopital Huriez (Lille) and Albany Medical Center.
Indications for early intervention in a patient with a ureteral or renal stone (rather than waiting for passage):
(1) obstruction with fever
(2) nausea and vomiting
(3) intractable pain resulting in hospital admission, unresponsive to conservative oral or parenteral pain management
(4) patient choice
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