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  • Title: Medical expulsive therapy for distal ureteral stones.
    Author: Tzortzis V, Mamoulakis C, Rioja J, Gravas S, Michel MC, de la Rosette JJ.
    Journal: Drugs; 2009; 69(6):677-92. PubMed ID: 19405549.
    Abstract:
    Although minimally invasive treatments for ureteral stones are efficacious, they are not free of complications and are associated with high cost. Medical expulsive therapy (MET) has recently emerged as an alternative strategy for the initial management of small distal ureteral stones. A MEDLINE search was undertaken to evaluate all currently available data on efficacy and safety of MET therapy in such patients. The specific mechanism of action on the ureteral smooth muscle and the emerging evidence of the efficacy (defined as either an increase in expulsion rate or a decrease in time to expulsion) and low-risk profile suggest that alpha-adrenergic receptor antagonists (alpha-blockers) and calcium channel antagonists should be the initial medical treatment in patients amenable to conservative therapy. NSAIDs and anticholinergics have not shown efficacy as single agents or in combination with alpha-blockers or nifedipine. Corticosteroids may provide a small additive effect when combined with either alpha-blockers or nifedipine.
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