title: Obstruction: back pressure or residual volume and laminar flow.
mesh_terms: D000818:Animals; D004285:Dogs; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology* / Q000503:physiopathology; D007668:Kidney / Q000503:physiopathology; D010388:Pelvis; D011312:Pressure; D011704:Pyelonephritis / Q000209:etiology* / Q000503:physiopathology; D051381:Rats; D014517:Ureteral Obstruction / Q000150:complications* / Q000503:physiopathology; D014552:Urinary Tract Infections / Q000150:complications; D014567:Urography