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A Comprehensive Educational Website (established 1998)

Designed, Produced, and maintained (Edition 12, 2022) by 

Bhavani Shankar Kodali MD

Updated September 2022

Capnograph of the millennium

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.

Capnograph new technology in side stream
capnography side stream new technology