| External nasal valve collapse - a case-control and interventional study employing a novel internal nasal dilator (Nasanita). | |
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MedLine Citation:
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PMID: 20502758 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Nasal alar collapse is a common problem and difficult to assess and treat. METHODS: In 10 healthy controls and 10 patients with alar collapse, the size of the external nasal valve was analyzed on standardized nasal base photographs during quiet breathing and forced inspiration. A novel internal nasal dilator (Nasanita, Siemens & Co, Germany) was employed to assess the effects of a therapeutic intervention. In addition, active anterior rhinomanometry was performed. RESULTS: During quiet breathing, the external nasal valves were significantly smaller in patients with alar collapse (0.3 +/- 0.08 cm2) than in controls (0.7 +/- 0.2 cm2; p < 0.001). In heal-thy controls, forced inspiration did not significantly alter the size of the external nasal valve (-1.8% +/- 27.5%; p = 0.84), whereas it significantly decreased the external valve area in patients with alar collapse (-42.1% +/- 26.4%; p = 0.001). The internal nasal dilator significantly increased external valve areas during quiet breathing and forced inspiration and completely abolished alar collapse. Nasal airflow at a transnasal pressure difference of 150 Pa was not correlated with external valve size. Nasal airflow increased significantly after inserting the internal nasal dilator to 1300 +/- 370 ml/s (p < 0.001) in controls and 1300 +/-300 ml/s (p < 0.01) in patients. CONCLUSION: A small sized external nasal valve appears to be a major causative factor of alar collapse. A novel internal nasal dilator effectively enlarged the external nasal valve, abolished alar collapse and improved nasal airflow. |
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Authors:
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H Riechelmann; E Karow; D DiDio; F Kral |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Rhinology Volume: 48 ISSN: 0300-0729 ISO Abbreviation: Rhinology Publication Date: 2010 Jun |
Date Detail:
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Created Date: 2010-05-26 Completed Date: 2010-08-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0347242 Medline TA: Rhinology Country: Netherlands |
Other Details:
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Languages: eng Pagination: 183-8 Citation Subset: IM |
Affiliation:
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Department of Otorhinolaryngology, Medicial University Innsbruck, Innbruck, Austria. herbert.riechelmann@i-med.ac.at |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Case-Control Studies Dilatation / instrumentation* Female Humans Intervention Studies Male Middle Aged Nasal Cavity / surgery* Nasal Obstruction / surgery* Rhinomanometry Rhinoplasty / instrumentation* Treatment Outcome |
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