Introduction:

In Mexico, there is no study that specifies the sensitivity of biochemical and/or ultrasonographic tests to diagnose obstructive jaundice and indicate ERCP, which is useful given that magnetic cholangioresonance is not routinely reported in all medical units. We seek to establish the sensitivity of biochemical and ultrasonographic tests to indicate ERCP directly in icteric patients, in order to speed up the diagnostic/therapeutic process in the Regional Hospital Ignacio Zaragoza.

Objective:

To compare the usefulness of ultrasonographic and biochemical criteria to indicate endoscopic retrograde cholangiopancreatography without the need to use magnetic cholangioresonance.

Material and methods:

The biochemical and ultrasound methods will be strictly analyzed to establish three groups of patients 1. Patients at high risk of having an obstructive process of the bile duct: patients with a history of acute cholangitis, jaundice and/or choledocholithiasis demonstrated by ultrasound, and with elevation of AF, ALT and bilirubins. 2. Moderate risk: patients without evidence of history of jaundice or cholangitis, but with analytical alterations or VBP dilatation in ultrasound as an indirect sign. Low risk: parameters within normality.

Results and conclusions:

During the year and a half of follow-up, data were collected from 357 patients with indication for ERCP due to a diagnosis of choledocholithiasis or a high suspicion of biliary obstruction. Of which 70 patients were discarded for not meeting all the values. Of the total of patients 102 (35.54%) were men and 185 (64.45%) were women. The average age. The liver function tests FA, TGP and BT were all prognostic factors for choledocholithiasis in univariate analysis with p <0.01 levels. The clinical presentation was not included in the story. Age, TGO and GGTP did not achieve statistical value.

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