Monitoring of iodine deficiency in Central Siberia according the results of neonatal TSHscreening

Abstract

The aim of the research was to estimate the iodine deficiency and the effectiveness of IDD prevention in Central Siberia according the results of neonatal TSHscreening. Methods. Screening for congenital hypothyroidism used as an indicator of the degree of iodine deficiency and of its control. We analyzed the neonatal TSH values of 34980 infants born in 2008–2009. Results. According to the data of the congenital hypothyroidism screening the rate of TSH < 5 mU/1 was 11.8% in the Krasnoyarsk territory (23.9% in 2000) and corresponded to mild iodine deficiency. In different regions of the Krasnoyarsk territory the rate of TSH < 5 mU/1 in the newborn varied from 3.5% to 23.7%. The highest values were marked in the Taimyr, in Irbeysky, Suchobuzimsky, Eniseysky, Tuchtetsky, Novoselovsky regions, in Zheleznogorsk and Sosnovoborsk city (20.9–23.7%). In Khakasia the rate of TSH < 5 mU/1 was 12.2%. In the Republic of Tyva – 6.6% (38.6% in 1997; 11.5% in 2000). It corresponding to mild iodine deficie ncy. Conclusion. Our investigations show that in Central Siberia there is mild iodine deficiency demanding continuous adequate iodine prevention.