Feature trend display

A medical monitoring system for identifying a trend of one or more waveform related features, the system comprising:

• a capnograph configured to measure a first medical parameter of a patient and to produce a train of moving waveforms of the first medical parameter over a time period;
• a processor configured to, in real time:
• analyze the set of the train of waveforms and one or more shape or scale factors thereof to provide a single waveform representative of one breath;
• identify and extract two or more features from the single waveform, wherein the two or more features relate to the set of the train of moving waveforms produced by the capnograph from a time range within the time period;
• and
• generate a first trend and a second trend of the two or more features based on the single waveform, wherein the first trend is associated with a first feature of the two or more features and the second trend is associated with a second feature of the two or more features that is different from the first feature;
• and
• a display configured to display the first trend and the second trend by displaying a shape corresponding to both the first trend and the second trend, wherein a first shape feature of the shape is selected based on the first trend and a second shape feature of the shape is selected based on the second trend.