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Figure 1 | Respiratory Research

Figure 1

From: Combined forced oscillation and forced expiration measurements in mice for the assessment of airway hyperresponsiveness

Figure 1

Block diagram offlexiVentsystem with extensions for negative pressure-driven forced expiration manoeuvres. During a negative pressure-driven forced expiration manoeuvre, the reservoir pressure (Pres) as well as the air flow into the plethysmograph () were recorded via precision differential pressure transducers attached respectively to the negative pressure reservoir and the pneumotachograph mounted on the plethysmograph chamber. These signals were collected in addition to the volume displaced by the piston (Vol), the pressure in the cylinder (Pcyl) and the pressure at airway opening (Pao) typically recorded by the flexiVent. PEEP stands for positive end expiratory pressure.

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