Five patients were excluded because of decompensated cardiopulmonary disease, 15 patients because their laboratory test results were not complete within 24 hours of performance of ERCP, four patients because of prior ERCPs, 9 patients because of failed ERCPs, five patients because of biliary tract cancer, and four patients because of pancreatic head cancer.
La causas de exclusión fueron las siguientes: enfermedad cardiopulmonar descompensada, 5 pacientes, exámenes paraclínicos incompletos antes de las 24 horas de la ejecución de la CPRE, 15 pacientes, CPRE previa, 4 pacientes, CPRE fallida, 9 pacientes, cáncer de la vía biliar, 5 pacientes, y cáncer de cabeza de páncreas 4 pacientes.