Abstract
BACKGROUND: Multidrug-resistant tuberculosis (MDRTB) remains a health problem for many countries in the world. The share of MDRTB is 10-30% among newly diagnosed cases and 20-70% among relapses and treatment failure. The aim of the study is to define the side effects of second line drugs used in the treatment of MDRTB on thyroid function. METHODS: In 30 patients with multidrug resistant tuberculosis, echostructure of thyroid was studied by ultrasound imaging method. Indices of thyroid function: plasma levels of free thyroxin, thyroid stimulating hormone were studied before chemotherapy initiated, at the end of intensive phase and after the treatment finished. RESULTS: Decreasing of thyroid function under antituberculosis chemotherapy was approved. Monitoring and correction of thyroid function during antituberculosis chemotherapy was suggested. CONCLUSION: Patients with MDRTB taking ethionamide and PAS are at increased risk for hypothyroidism and goiter, and therefore require monitoring of thyroid function at all stages of antituberculosis chemotherapy for its timely correction.