#monitor  a piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble
  supertype:  electronic_equipment  equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor)
  subtype:  cardiac_monitor__cardiacmonitor__heart_monitor__heartmonitor  a piece of electronic equipment for continual observation of the function of the heart
  subtype:  electronic_fetal_monitor__electronic_foetal_monitor__fetal_monitor__fetalmonitor__foetal_monitor  an electronic monitor that monitors fetal heartbeat and the mother's uterine contractions during childbirth

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