A system associated with a medical treatment device for detecting a condition of a patient includes an input device including at least a camera or a microphone. The system also includes a medical treatment device with a controller/classifier and at least one of flow controller, a pump, and/or an alarm output. The controller/classifier has at least a video-image processor or an audio processor configured to recognize a face and a body or to recognize changes in skin color, facial expression, or body position. The controller/classifier may also recognize speech and classify predefined normal and irregular sound patterns, and output state data corresponding thereto. The controller/classifier is connected to apply the state data to the at least one flow controller, pump, and/or alarm output.