Taking the pressure off the sphincter of Oddi.
D014670:Ampulla of Vater / Q000502:physiology*; D003137:Common Bile Duct Diseases / Q000503:physiopathology / Q000601:surgery; D004724:Endoscopy; D006801:Humans; D008365:Manometry; D009119:Muscle Contraction; D011312:Pressure; D009803:Sphincter of Oddi / Q000502:physiology* / Q000601:surgery