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  Indian J Med Microbiol
 

Figure 3: Time capnogram showing segments, phases, and angles. Inspiratory segment is phase 0, expiratory segment is divided into three phases: I, II, and III. Maximum value of carbon dioxide at the end of the expiration is designated as end-tidal partial pressure of carbon dioxide (PETCO2). The angle between phase II and III is α angle and between phase III and the inspiratory limb is β angle

Figure 3: Time capnogram showing segments, phases, and angles. Inspiratory segment is phase 0, expiratory segment is divided into three phases: I, II, and III. Maximum value of carbon dioxide at the end of the expiration is designated as end-tidal partial pressure of carbon dioxide (PETCO<sub>2</sub>). The angle between phase II and III is α angle and between phase III and the inspiratory limb is β angle