[Chaotic dynamics in medicine].

It has turned out that almost all laws of nature (especially in biology and medicine) are nonlinear. This means that within the mathematical formulation of a law of nature some systems variables are coupled nonlinearly. The field, describing these nonlinear formulation, is referred to as dynamical systems theory or chaos theory. Analytical techniques derived from the field of chaos theory can be useful in characterising stability and complexity of homeostasis parameters (blood pressure, renal vascular, heart rate). It seems, that nonlinear characteristics may play an important role in prediction of some illnesses of the nervous and cardiovascular system.