case_images: PMC3590513_01
case_images: PMC3590513_02
case_images: PMC3590513_03
case_images: Capnogram showing elevated baseline and higher end-tidal carbon dioxide
case_images: JOACP-29-108-g001.jpg
case_images: PMC3590513_03_JOACP-29-108-g001.jpg
case_images: F1
case_images: After a few breaths, FiCO2 increased to 9 mmHg [Figure 1].
case_images: Deformed 'flexible leaflet' of expiratory unidirectional valve (shown after removing the covering dome)
case_images: JOACP-29-108-g002.jpg
case_images: PMC3590513_03_JOACP-29-108-g002.jpg
case_images: F2
case_images: We noted that the leaflet of the expiratory UDV was deformed and part of it remained open during inspiration [Figure 2].
case_images: Ventilator display showing the abnormal reverse flow through expiratory unidirectional valve during inspiratory phase (I) and the normal flow during expiration (E)
case_images: JOACP-29-108-g003.jpg
case_images: PMC3590513_03_JOACP-29-108-g003.jpg
case_images: F3
case_images: The flow waveform on the ventilator showed minimal flow during inspiration [Figure 3].