What question did this study set out to answer?

This research aimed to quantify how phrenic nerve stimulation affects pharyngeal collapsibility and airflow obstruction during drug-induced sleep endoscopy.

May 20, 2026American Journal of Respiratory and Critical Care Medicine

A77-05 Quantitative Effects of Phrenic Nerve Stimulation on Pharyngeal Collapsibility in Obstructive Sleep Apnea

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Authors

JYJ L YuEmory University BKB L KaneEmory University KGK P GouldmanEmory University

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Implication

Randomized trial quantifies improvements in pharyngeal collapsibility in OSA patients using phrenic nerve stimulation, suggesting beneficial therapeutic implications.

Key Points

This research aimed to quantify how phrenic nerve stimulation affects pharyngeal collapsibility and airflow obstruction during drug-induced sleep endoscopy.
19 patients underwent drug-induced sleep endoscopy (DISE) with measurements of airflow and tidal volume.
Subtherapeutic nasal pressures were applied to assess inspiratory flow limitation severity during phrenic nerve stimulation testing.
Pressure-flow and pressure-tidal volume curves were compared to assess changes due to stimulation.
Phrenic nerve stimulation reduced critical nasal pressure (PCRIT) by 7.1 cmH2O (95% CI: 4.4-9.8) and open nasal pressure (POPEN) by 4.6 cmH2O (95% CI: 3.1-6.1).
The slope of the pressure-flow relationship decreased by -0.4, indicating varied responses to stimulation across subjects.
Overall, stimulation improved airflow and reduced airway obstruction, comparable to other CPAP alternatives.

Cite This Study

Yu et al. (2026) studied this question.

synapsesocial.com/papers/6a0d4fbff03e14405aa9b361 https://doi.org/10.1093/ajrccm/aamag162.6306

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Implication

Randomized trial quantifies improvements in pharyngeal collapsibility in OSA patients using phrenic nerve stimulation, suggesting beneficial therapeutic implications.

A77-05 Quantitative Effects of Phrenic Nerve Stimulation on Pharyngeal Collapsibility in Obstructive Sleep Apnea

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Implication

Key Points

Cite This Study

A77-05 Quantitative Effects of Phrenic Nerve Stimulation on Pharyngeal Collapsibility in Obstructive Sleep Apnea

Discussion

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Implication

Key Points

Cite This Study

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