Legends
Figure 1. Illustrations show flexible laryngoscopy with nasal
pharyngeal oxygen. Laryngeal cleft cannot be detected during nose-open
(a), but it become obvious gradually during sustained pharyngeal
inflation by doing nose-closure (b).
Figure 2. Serial images of Laryngeal cleft (LC) with different
durations of sustained pharyngeal inflation (SPI); nearly normal at SPI
of 0 to 1 second (a) and the cleft gradually become obvious at 3 to 5
seconds (b, c).
End.