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. 2021 Oct;10(10):2563–2572. doi: 10.21037/tp-21-437

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2021 Translational Pediatrics. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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Measurement results of the sagittal diameter of the upper airway. (A) Comparison of A. (B) Comparison of N. (C) Comparison of PNS-R. (D) Comparison of PNS-UPW. (E) Comparison of SPP-SPPW. (F) Comparison of U-MPW. *, P<0.05. A: the vertical length of the tangent line from the lowest end of the lower part of the adenoid to the cranial lateral side of the basilar clivus; N: nasopharynx cavity width; R: point located at the intersection of the posterior pharyngeal wall and PNS-Hor line; PNS: nasopharynx apex; PNS-R: distance between the PNS and R; UPW: point located at the intersection of the posterior pharyngeal wall and PNS-Ba line; PNS-UPW: distance between the PNS and UPW. RG, research group; CG, control group.