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Annals of Intensive Care
Figure 2 | Annals of Intensive Care

Figure 2

From: End-tidal carbon dioxide monitoring using a naso-buccal sensor is not appropriate to monitor capnia during non-invasive ventilation

Figure 2

Respiratory circuit. Illustration of the respiratory circuit used in the study. From the patient to the ventilator, the circuit consists of an hermetic nasobuccal mask, the dedicated proximal flow sensor of the V60 ventilator, the additional flow sensor inserted to record insufflated and exuflated flow-time curves, the dedicated whisper swivel to create a calibrated intentional leak to avoid CO2 rebreathing, and the ventilator single-limb pipe.

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