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Figure 1 | BMC Pulmonary Medicine

Figure 1

From: Normal values of exhaled carbon monoxide in healthy subjects: comparison between two methods of assessment

Figure 1

Diagram of the experimental circuit and volumes of the components. The subjects enrolled in the study were asked to breathe through a circuit consisting of (A) an HME bacterial/ viral filter (DAR Barrierbac S, Mallinkrodt DAR, Italy); (B) Teflon connection tube, with three output ports, connected to: (C) cardboard and plastic tube (D-piece) through which the exhaled gas was sent to (E) PiCO + Smokerlyzer; (F) capnometer CosmoPlus mod. 8100 (Novametrix Medical Systems Inc. Connecticut, USA); (D) photoacoustic spectrophotometer Brüel&Kjær 1312. The direction of the arrows points out the direction of air flow.

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BMC Pulmonary Medicine

ISSN: 1471-2466

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