Objective: By examining the mortality rate of thyroid hormone levels and the factors affecting this rate during the follow-up of patients infected with Covid 19 in the intensive care unit, it was aimed to contribute to the literature on covid 19 disease, which is a new disease. 

Material and methods: Covid 19-infected patients who were hospitalized in the intensive care unit between 18 August and 30 November 2020 according to the criteria of hospitalization in intensive care, such as age, gender, hospitalization periods, additional diseases, thyroid hormone levels, and inflammatory cytokine levels and mortality rates. Their clinical features were recorded, retrospectively analyzed, and compared. 

Results: Data of 89 patients whose thyroid function tests were examined from 113 patients included in the study were collected. It was found that triiodothyronine levels in the group of patients who died were statistically lower than those who were discharged. Interleukin-6 and procalcitonin levels were found to be higher in the group of patients who died. 

Conclusion: Triiodothyronine, interleukin-6, and procalcitonin levels affect mortality rate and may be useful in predicting mortality in Covid19- infected patients treated in intensive care.

TBA