Apparatus for enhanced display of physiological waveforms and for defibrillation

摘要

A system for the enhanced display of event markers in time-related association with physiological waveforms displayed on cathode ray tubes which use a recirculating memory to provide a refreshed display. The event is marked in the displayed waveform by an intensification of the normal trace determined by the time-related occurrence of the event and comprises a first modulation of the displayed waveform. A secondary event-controlled modulation of the primary modulated display serves to further enhance and accurately identify the occurrence and timing of the event marker in the display. This enhanced display of event markers is further utilized to distinguish a marker of one type from a marker of another type utilizing particular data coding in the memory and appropriate detection logic for recovering data from memory. The enhanced display is particularly useful for clearly marking events occurring in timed-relationship with a patient's cardiac cycle.