[Thyroid function tests in viral chronic hepatitis]

CONSTRUCTION AND VALIDATION OF A BUNDLE FOR EVALUATION OF THYROID FUNCTION IN PATIENTS WITH CIRRHOSIS

Thyroid dysfunction has been reported in association with several chronic diseases, including advanced liver disease. •The bundle discussed here is aimed at proposing systematic assistance according to the best evidence-based practices available. •The process of constructing and validating the bundle was carried out in the following stages: a) bibliographic survey; b) bundle elaboration; and c) content validation. •The bundle was considered valid to facilitate medical decision making, aiding physicians to manage, in a practical and effective manner, the thyroid function of patients with liver cirrhosis. Background - Thyroid dysfunction has been reported in association with several chronic diseases, including advanced liver disease. This disease and its management are often neglected in clinical practice. The bundle discussed here is aimed at proposing systematic assistance according to the best evidence-based practices available. Objective - To construct and validate a bundle to evaluate thyroid function in patients with liver cirrhosis. Methods - The process of constructing and validating the bundle was carried out in the following stages: a) bibliographic survey; b) bundle elaboration; and c) content validation. The bibliographic survey was carried out in an integrative review about evidence related with the thyroid function of patients with liver cirrhosis. The findings from the integrative review were considered as supporting evidence for the elaboration of the bundle. The tool then created used accessible language and was evidence-based, ensuring that information was based on current literature. Results - The bundle was restructured to provide guidance on the management of patients with liver dysfunctions, including: cirrhosis due to general causes, cirrhosis due to hepatitis C, non-alcoholic fatty liver disease, primary biliary cholangitis, and hepatocellular carcinoma. The orientations in the bundle included: exams to be requested to screen for thyroid disorders, and guidance about the treatment of these dysfunctions and their associated complications. We analyzed specialist evaluation of the bundle using the Content Validity Index (CVI). We carried out a binomial test to evaluate consistency and specialist agreement regarding the items in the bundle, considering values >0.61 as a good level. The items in the bundle were considered to be valid (CVI >0.80). The general CVI of the instrument was 0.95 (CI95%: 0.91-0.98). Conclusion - The bundle was considered valid to facilitate medical decision making, aiding physicians to manage, in a practical and effective approach, the thyroid function of patients with liver cirrhosis. This tool should not be used as a replacement for individual, evaluation of the physician providing assistance. We recommend the structured bundle to be added to medical practice, considering its simple application, low cost, and potential to contribute for the management of these patients.