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| Format: | Artículo Open Access |
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Wiley
2025
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| Accès en ligne: | https://physoc.onlinelibrary.wiley.com/doi/10.14814/phy2.70621 |
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| author | Anne Kristine Brekka Maria Vollsæter Zoe Fretheim‐Kelly Manel Lujan Roy Miodini Nilsen Hege Havstad Clemm John‐Helge Heimdal Thomas Halvorsen Ove Fondenes Ola Drange Røksund Tiina Maarit Andersen |
| author_facet | Anne Kristine Brekka Maria Vollsæter Zoe Fretheim‐Kelly Manel Lujan Roy Miodini Nilsen Hege Havstad Clemm John‐Helge Heimdal Thomas Halvorsen Ove Fondenes Ola Drange Røksund Tiina Maarit Andersen Anne Kristine Brekka Maria Vollsæter Zoe Fretheim‐Kelly Manel Lujan Roy Miodini Nilsen Hege Havstad Clemm John‐Helge Heimdal Thomas Halvorsen Ove Fondenes Ola Drange Røksund Tiina Maarit Andersen |
| collection | Wiley Open Access |
| contents | Exploring upper airway and laryngeal resistance to noninvasive ventilation in healthy awake adults Anne Kristine Brekka Maria Vollsæter Zoe Fretheim‐Kelly Manel Lujan Roy Miodini Nilsen Hege Havstad Clemm John‐Helge Heimdal Thomas Halvorsen Ove Fondenes Ola Drange Røksund Tiina Maarit Andersen Physiological Reports Abstract The interaction between anatomical structures, pressure, and airflow impacts the airway resistance. The airflow during noninvasive ventilation (NIV) relies on the upper airway and laryngeal patency. This study aimed to quantify the airflow resistance at these levels during NIV. In this cross‐sectional study examining 10 healthy, awake adults, we established a NIV setup incorporating a continuous video‐recorded transnasal laryngoscopy and simultaneous airway pressure measurement using a transducer positioned above and below the vocal folds. Airflow and mask pressure were recorded by a pneumotachograph at the mask. NIV was delivered with inspiratory positive pressure (IPAP)/expiratory positive pressure (EPAP) set to 10/4 and 15/4 cmH 2 O. Upper airway (R uaw ) and translaryngeal (R tl ) resistance were calculated and compared with laryngoscopic findings. During IPAP10/EPAP4, the R uaw was 4.25/4.21 and R tl 2.20/3.45. During IPAP15/EPAP4, the R uaw was 5.18/5.73, and the R tl was 2.31/3.83. R uaw was significantly higher than R tl for inspiration at both IPAP levels ( p = 0.001 and p = 0.012), and for expiration with IPAP15/EPAP4 ( p = 0.048). The resistance appeared dynamic during the NIV cycle, and the findings aligned with the laryngoscopic observations. NIV modulates upper airway and translaryngeal resistance. Resistance increases with elevated IPAP levels, particularly within the upper airway. 10.14814/phy2.70621 http://creativecommons.org/licenses/by/4.0/ |
| doi_str_mv | 10.14814/phy2.70621 |
| format | Artículo Open Access |
| id | wiley_oa_10_14814_phy2_70621 |
| institution | Wiley Open Access |
| license_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| publishDate | 2025 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Exploring upper airway and laryngeal resistance to noninvasive ventilation in healthy awake adults Anne Kristine Brekka Maria Vollsæter Zoe Fretheim‐Kelly Manel Lujan Roy Miodini Nilsen Hege Havstad Clemm John‐Helge Heimdal Thomas Halvorsen Ove Fondenes Ola Drange Røksund Tiina Maarit Andersen Physiological Reports Exploring upper airway and laryngeal resistance to noninvasive ventilation in healthy awake adults Anne Kristine Brekka Maria Vollsæter Zoe Fretheim‐Kelly Manel Lujan Roy Miodini Nilsen Hege Havstad Clemm John‐Helge Heimdal Thomas Halvorsen Ove Fondenes Ola Drange Røksund Tiina Maarit Andersen Physiological Reports Abstract The interaction between anatomical structures, pressure, and airflow impacts the airway resistance. The airflow during noninvasive ventilation (NIV) relies on the upper airway and laryngeal patency. This study aimed to quantify the airflow resistance at these levels during NIV. In this cross‐sectional study examining 10 healthy, awake adults, we established a NIV setup incorporating a continuous video‐recorded transnasal laryngoscopy and simultaneous airway pressure measurement using a transducer positioned above and below the vocal folds. Airflow and mask pressure were recorded by a pneumotachograph at the mask. NIV was delivered with inspiratory positive pressure (IPAP)/expiratory positive pressure (EPAP) set to 10/4 and 15/4 cmH 2 O. Upper airway (R uaw ) and translaryngeal (R tl ) resistance were calculated and compared with laryngoscopic findings. During IPAP10/EPAP4, the R uaw was 4.25/4.21 and R tl 2.20/3.45. During IPAP15/EPAP4, the R uaw was 5.18/5.73, and the R tl was 2.31/3.83. R uaw was significantly higher than R tl for inspiration at both IPAP levels ( p = 0.001 and p = 0.012), and for expiration with IPAP15/EPAP4 ( p = 0.048). The resistance appeared dynamic during the NIV cycle, and the findings aligned with the laryngoscopic observations. NIV modulates upper airway and translaryngeal resistance. Resistance increases with elevated IPAP levels, particularly within the upper airway. 10.14814/phy2.70621 http://creativecommons.org/licenses/by/4.0/ |
| title | Exploring upper airway and laryngeal resistance to noninvasive ventilation in healthy awake adults |
| topic | Physiological Reports |
| url | https://physoc.onlinelibrary.wiley.com/doi/10.14814/phy2.70621 |