[Nature of changes in the sympathico-adrenal system and certain indicators of homeostasis in patients with chronic coronary insufficiency during the process of surgical intervention].

A study of some aspects of homeostasis and hemodynamics in surgical interventions for chronic coronary insufficiency helped reveal a difference in the nature of their changes depending upon the severity of the course and outcomes of the operation. With the latter running an uneventful course there is observed, as a rule, a moderate rise of the blood catecholamines level and their abundant passage with urine, which appears as a prognostically favourable sign. In operations complicated by the "syndrome of low cardiac ejection" terminating lethally there was definable, on the contrary, a high blood catecholamines content in conjunction with their reduced passage with urine. This was considered a prognostically adverse sign.