Thyroid dysfunction in Egyptian patients with liver cirrhosis: a cross-sectional study

Abstract

Background Owing to the liver’s important role in thyroid hormone metabolism. Concerns were raised about the effect of the degree of liver cirrhosis on thyroid functions. This study aimed to assess the effect of liver cirrhosis on thyroid functions and the relation between thyroid dysfunctions and both the severity of liver disease and associated clinical presentations. Aim To assess the effect of liver cirrhosis on thyroid function and its relation to the severity of liver disease. Patients and methods This was a cross-sectional study conducted on 70 patients with liver cirrhosis (35 cirrhotic compensated patients and 35 decompensated patients) in addition to 20 healthy control subjects. Serum free triiodothyronine (FT3), free thyroxine, and thyroid stimulating hormone (TSH) levels were measured. The severity of liver cirrhosis was assessed by Child-Turcotte-Pugh (CTP) and Model for End-Stage Liver Disease (MELD) scores. Statistical analysis was done to compare groups and evaluate the association of thyroid function tests with CTP and MELD scores. Results FT3 and free thyroxine levels showed significant differences among studied groups (P=0.013 and <0.001, respectively) as both were decreased in decompensated patients compared with control group, while only FT3 was significantly decreased in compensated patients than the control group. While TSH levels showed no significant difference (P=0.062). FT3 and TSH levels showed a significant negative correlation to CTP and MELD scores. Conclusion Liver cirrhosis was associated with abnormalities in thyroid function tests that may be an additive cause to complaints in those patients. Being inversely related to the severity of the liver condition both TSH and FT3 needed to be followed-up as the liver condition deteriorated.