A system for providing control signals for ventilating or compressing, respectively, includes an information receiving device that receives, for a resuscitation, information regarding a compression parameter and/or ventilation parameter, as function of a parameter indicative of blood circulation, a processing component for evaluating the different values of the chest compression parameter and/or ventilation parameter as function of the parameter indicative of blood circulation and deriving based on said information a value for the ventilation parameter and/or chest compression parameter respectively, and a control signal generator for generating control signals according to the derived ventilation parameter or chest compression parameter.