[Thyroid functional features after diagnostic studies with iodine-containing X-ray contrast substances]

Iodine-containing radiopaque preparations have been widely used for diagnostic purposes. The absolute amount of iodine introduced in this case is 200,000 to 350,000 times the daily requirement for the element. Throughout life, a person consumes only about 3-5 g of iodine, while during coronary angiography the dose of parenterally administered iodine is about 25-52 g. In this regard, the possibility of development should be taken into account when conducting diagnostic studies using radiopaque drugs iodine-induced conditions, especially in people of an older age group, among which the prevalence of thyroid pathology is especially high. The presence of autonomous formations in the thyroid gland (thyroid gland), often unrecognized, can lead to the development of iodine-induced thyrotoxicosis (IIT) after the introduction of pharmacological doses of iodine, which in turn can lead to deterioration in the course of IHD and the development of arrhythmic complications. We continue discussion the need for screening for the detection of functional thyroid dysfunctions and an ultrasound of the thyroid gland before the introduction of iodine-containing radiopaque drugs. The controversial issue remains the need for preventive treatment with thyreostatic drugs of people at risk of developing IIT.