Operative pressure profile at Oddi's sphincter and in the choledochus duct through the cystic duct (development of a normal curve).

With the aid of 14 patients, it was attempted to develop a normal curve for pressure conditions at Oddi's sphincter and in the choledochus duct. However, because of limited patient material, it was not possible to interpret deviations from the normal curve and relate these to confirmed pathological conditions.