Conflict of Interests
All authors declare that there is no conflict of interests regarding the
publication of this paper.
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Figure legends
Figure 1. Flexible endoscopy with nasopharyngeal oxygen support: a)
nose-open with narrow pharyngeal space; b) SPI (nose-close) expands the
pharyngeal space for clear inspection of the structures.
Figure 2. The trend of measured intra-pharyngeal peak pressure with
different durations of sustained pharyngeal inflation.
Figure 3. Changes of intra-pharyngeal space (IPS) peak inflation
pressure (PIP), lumen dimension score and images# of
pharyngeal lesions in four durations of sustained pharyngeal inflation
(SPI).
Figure 4. Changes of intra-pharyngeal space (IPS) peak inflation
pressure (PIP), lumen dimension score and images# of
laryngeal lesions in four durations of sustained pharyngeal inflation
(SPI).