[Methodologic aspects and results of a complex long term analysis of a perinatal/peripartal care system. 4. Systemic aspects].

Important signs of our present development are high dynamics, increasing complexity and active-preventive orientation. Additional progresses of methods are inevitable for further progress in practice and knowledge. Functional purposeful methods in organisation are necessary. The central problem is the step by step crossing from structural institutional to functional-regional care systems and way of thinking. Methodological-heuristic resources are the concept of a functional system and the theory of hierarchic control systems in a limited scale.