[Transient neonatal hypothyrosis in premature neonates].

Plasma levels were measured of T4, free T4, T3, TSH in 64 premature neonates and in 41 those born at right time during the time-related course of the neonatal period. The results secured permit regarding the thyroid hypohormonosis syndrome in premature neonates as a consequence of the hypothalamic-hypophyseal-thyroid axis deficiency and of immaturity of the thyreostatic receptors as well. On the one hand, this promotes hypometabolism and, correspondingly, favours more economic utilization of bodily energy resources but on the other hand, such adaptation is not infrequently results in its failure and persistent thyrodeficiency, especially in very low-birth weight infants, during the whole of the neonatal period.

[Neurotic disorders in adolescents with vegetative dysfunction].

The main disorders in juveniles who are resident in the zone of small doses of ionizing radiation are vegetative dysfunctions. Of these, there prevail vegetovascular dysfunction comprising 45.7%, with neurocirculatory and vegetovisceral dysfunctions occurring less frequently (26.

[Structural and functional status of the hypophyseal-thyroid system in prenatally irradiated children].

In order to evaluate the morphologic-and-functional state of the hypophysis-thyroid system long after the Chernobyl accident we examined 1491 children from the northern territories of the Zhitomir region. Of these, 261 had not been in utero exposed to radioiodine, 1230 pediatric subjects proved to be postconception-exposed. In utero radioiodine has not been found to affect the thyroid size in any noticeable way.

[The mechanisms of diastolic dysfunction and their assessment by a Doppler method].

The Doppler method makes possible to reveal the relaxation disturbances and the increased left ventricular (LV) stiffness-pathophysiologic mechanisms of diastolic myocardial dysfunction (DMD), exerting opposite influence on the correlation of transmitral flow peaks. The decrease of the "diastolic reserve" in the patients with lung congestion is useful to diagnose DMD. But the type of LV filling, when the relative role of early diastole is decreased and of the late diastole-increased, cannot itself be recognized as pathologic.