[Role of hormonal factors in the etiology of juvenile arterial hypertension].

A study of the hormonal spectrum, mainly of sex hormones, has revealed that male youths with systolic arterial hypertension have considerably higher levels of testosterone as compared with both normal values and those observed in patients with more stable forms of arterial hypertension (essential hypertension of stage IB-IIA, renal hypertension). The findings obtained justify the conclusion that androgen hyperproduction is the cause rather than the consequence of hypertension in the pubertal period. The results of the study may be used in the differential diagnosis of hypertension in youth.

[Value of 99m-pyrophosphate myocardial scanning and scintigraphy in the diagnosis of acute myocardial infarction].

Visualization of the myocardial necrotic focus with the aid of 99mTc -pyrophosphate is an informative method of determining the infarction degree and localization in the cardiac muscle. Scanning enables evaluation of the area of the necrotic focus in patients with acute myocardial infarction within two weeks of the disease onset. Scintigraphy with both the diffuse and the focal variants of isotope accumulation is shown to be of high diagnostic value in acute myocardial infarction.