Clinical Anesthesia ProceduresSearch Clinical Anesthesia ProceduresABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZUlnar nerve blockUltrasoundUnfractionated heparinUnivent tubesUpper airway obstructionUpper airway surgeryUpper extremityUreteroscopyUrethraUrinalysisUrinary retentionUrineUrine and Serum Diagnostic Indexes (Table 4.2)Urologic surgery