Embodiments disclosed herein include systems and methods for administering a drug over a time period. One embodiment of a system includes an administration unit, a housing that houses the administration unit, and a controller unit adapted to receive an alarm triggering signal. Also included in some embodiments is an alarming unit that is adapted to generate an alarm signal on reception of the alarm triggering signal. Some embodiments include a patient state monitor that includes a motion-sensitive sensor unit that is reactive on patient motion. The patient state monitor may be adapted to process a sensor signal generated by the motion-sensitive sensor unit. The patient state monitor may also be adapted to transmit the alarm triggering signal to the controller unit if a patient motion level is below a predefined motion level, as determined by a length of time without patient motion.
