| Effect of postural change on nasal airway and autonomic nervous system established by rhinomanometry and heart rate variability analysis. | |
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MedLine Citation:
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PMID: 18416973 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Clinically, nasal obstruction is experienced frequently in the supine position, and the nasal autonomic nervous system (ANS) may be involved in the mechanism. The central ANS functions at maintaining cardiovascular hemodynamics. However, during postural change, the corresponding changes of the central ANS may simultaneously change the nasal airway as well. In this study, the relationships between nasal ANS and central ANS were explored using rhinomanometry (RMM) and heart rate variability (HRV) analysis between postural changes. METHODS: Twelve healthy volunteers aged between 19 and 39 years and without a history of allergic rhinitis or significant nasal anatomic obstruction were enrolled for the study. The nasal airway was measured using RMM in a sitting position and then in a supine position; the electrocardiography was simultaneously recorded. RESULTS: In supine position, the total nasal airflow significantly decreased and the airway resistance significantly increased (p<0.05, Wilcoxon signed-rank test). The ratio of low frequency power to high frequency (HF) power of HRV that represents sympathetic modulation significantly decreased in the supine position (p<0.05, Wilcoxon signed-rank test). However, the HF that represents parasympathetic activity did not show significant change with postural change. The correlations of heartbeat interval with total inspiratory airflow and total inspiratory resistance were significant also (p<0.01, Pearson's correlation). CONCLUSION: The central ANS activities significantly correlated with changes to the nasal airway during postural change. The central ANS, especially the sympathetic nervous system, may play a role in controlling nasal airway during postural change. |
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Authors:
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Jen-Hung Ko; Terry B J Kuo; Guo-She Lee |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: American journal of rhinology Volume: 22 ISSN: 1050-6586 ISO Abbreviation: Am J Rhinol Publication Date: 2008 Mar-Apr |
Date Detail:
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Created Date: 2008-04-17 Completed Date: 2008-07-01 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8807268 Medline TA: Am J Rhinol Country: United States |
Other Details:
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Languages: eng Pagination: 159-65 Citation Subset: IM |
Affiliation:
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Department of Otolaryngology, Taipei City Hospital, and Institute of Brain Science, Faculty of Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Airway Resistance / physiology* Analysis of Variance Autonomic Nervous System / physiology* Electrocardiography Female Heart Rate / physiology* Humans Male Nasal Cavity / physiology* Nasal Obstruction / physiopathology* Posture* Rhinomanometry Supine Position |
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