[Evaluation of the functional state of the circulatory system in children using postural volume-load test].

A postural volume-load test (PVLT) is an informative technique for the evaluation of the function and identification of latent disturbances of cardiovascular work which are difficult to diagnose using conventional techniques. It is a noninvasive procedure, analogous in its results to a more complex infusion volume-load test. In PVLT cardiac pump function is mainly assessed, as the basic test criterion is the direction of stroke volume changes. If cardiac pump function is intact, one can predict the response to the volume load and optimal conditions for infusion therapy are created. Negative, as well as weakly expressed positive reaction or its absence during PVLT indicate the presence of heart failure or the danger of its onset and require the use of drugs with positive inotropic effect (sympathomimetics, glycosides). In patients with heart failure PVLT makes it possible to control the efficacy of the therapy conducted. Test simplicity and sufficient informative value makes advisable its use in all critical patients of intensive care units, as well as in patients who are to be exposed to surgery threatened with great blood loss.