Capnograph of this millennium
A vision to reality
Bhavani Shankar Kodali. MD
A vision of an ideal capnograph - Dated November 2000
|A side stream capnograph with the advantages of main stream capnograph seems to be the ideal one|
|Inspiratory and expiratory flow rates should be displayed above the co2 waveforms to delineate segments and phases of capnogram|
|A capability of plotting a volume capnogram would enable determination of physiological deadspace|
|During steady state, carbon dioxide status is a function of ventilation, and oxygen status is function of inspiratory oxygen concentration. Therefore, the display should reflect this concept.|
|Prevention of secretions being drawn into the capnographs would markedly improve the ICU application of capnographs|
New Capnograph that can superimpose respiratory flows over time capnograms in real time using
side stream sensor technology
Simultaneously, it can display with volume capnogram and physiological dead space breath by breath.
Can also calculate Respiratory Quotient and Energy Expenditure.
Tidal volumes as low as 1-2 ml can be measured with this new technology.