Since the first infra-red CO2 measuring and  recording apparatus was introduced in 1943 by Luft, capnography has evolved into an essential component of standard anesthesia monitoring armamentarium.

The primary goal of anesthesiologists is to prevent hypoxia,  and capnography helps to identify situations that can lead to hypoxia if uncorrected. Moreover, it also helps in the swift differential diagnosis of hypoxia before hypoxia can lead to irreversible brain damage.

Because of these advantages, the utility of capnography has been extended outside of the operating room arena, in recent times, to emergency rooms, endoscopic suites, X-ray rooms and even on-site at emergency and trauma fields. Therefore, a section for emergency personnel has been included.

The subject matter is divided into several sections. You can double click on the section of your choice. Several animations have been used to explain underlying concepts. Each section is also accompanied by 'highlights' for quick understanding. A section on 'Anesthesia breathing systems' has been recently included. There is also a section 'Capnomagic screen' where several capnograms are arranged by name around a central screen. Placing the mouse cursor over the capnogram title brings up the relevant tracing on the central screen. A quiz is included to allow users to gauge their levels of understanding and learning.

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