Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Capnographic Waveform. A capnographic waveform reflects carbon dioxide content of gas during a ventilatory cycle. In Figure 5 expiration occurs along points A to D as follows: A–B, exhalation of dead space; B–C, exhalation of lower airway; and C–D, exhalation of alveoli. Inspiration occurs from points D to E. End-tidal CO2 is recorded at point D.
