Design and validation of equations for weight estimation in adolescents.

Introduction: Measuring weight is difficult to be carried out in bedridden people, with physical deformity or in emergency units. Under these circumstances, one option is to estimate the weight.

Objectives: The aim of this study is to propose and validate equations for estimating the weight of Brazilian adolescents based on anthropometric variables related to body weight.

Contribution of intraoperative biliary manometry for the diagnosis of bile duct stones.

Sixty patients with cholecystitis and gallstones, with and without biliary duct calculi, were submitted to intraoperative biliary manometry and cholangiography. The patients were subdivided into two groups of 30: Group A, without biliary duct calculi, and Group B, with biliary duct calculi. The pathology had been diagnosed before surgery for 24 patients in group B (B1), and for 6 (B2), diagnosis was made on the basis of intraoperative manometry which showed higher pressure values than those encountered in the main bile ducts of patients without calculi, and of intraoperative cholangiography.