nasal airway resistance

nasal airway resistance

ENT The state of the nasal passages during breathing, which reflects the degree of nasal obstruction Evaluation Simultaneous measurement of transnasal pressure and airway resistance
References in periodicals archive ?
A prospective study using rhinomanometry and patient clinical satisfaction to determine if objective measurements of nasal airway resistance can improve the quality of septoplasty.
The other objective test was anterior rhinomanometry, which measured nasal airway resistance at 150 Pa.
For both groups, nasal peak inspiratory flow improved, while nasal airway resistance and minimum cross-sectional area remained similar.
It appears, however, that patients with high nasal airway resistance preoperatively and a reduction in airway resistance after surgery are more satisfied with the surgical result as would be expected [13].
The nasal cavity anatomy and volume are altered with maxillary osteotomies and as a result nasal airway resistance changes.
Studies for evaluating nasal airway resistance and obstruction first started in the 19th century, and many tests and measuring methods have been devised to date.
Abnormalities of the nose, such as septal deviation, nasal polyps, intranasal benign tumors, inferior turbinate hypertrophy, rhinitis, and even malignancies, may cause or aggravate the symptoms of OSA due to severe nasal obstruction and elevated nasal airway resistance. [sup][17] Therefore, nasal surgery with the goals of altering structural abnormalities and improving nasal patent, such as septoplasty, submucous resection, and outfracturing of the inferior turbinates and functional endoscopic sinus surgery may play a positive role in the treatment and management of OSA.
Previous research has indicated that respirators can distort the nasal alae [18], an area that accounts for the major contribution of nasal airway resistance [37], increasing the work of breathing and leading in a switch to oral or oronasal breathing [38].
They concluded that the pharyngeal flap procedure increased nasal airway resistance. Disagreeing with this etiologic contention, Vig29 stated that, in the absence of documented total nasal obstruction, surgical or other treatment to "improve" nasal respiration remains purely empirical, and difficult to justify from an orthodontic viewpoint.
The effect of rapid maxillary expansion on nasal airway resistance. Am J Orthod.
We accomplished this by comparing (1) the results of simultaneously measured nasal cavity and intramaxillary sinus pressures before and after widening of ventilation openings, (2) changes in mucociliary transport function as measured by the saccharin test, and (3) changes in nasal airway resistance. Just as multiple transit routes between the nasal cavity and maxillary sinus give rise to greater fluctuations in intramaxillary sinus pressure, and just as rapid breathing gives rise to even greater pressure fluctuations than does quiet breathing, we believe that both intranasal cavity airflow velocity and the number of ventilation openings present have an effect on the state of ventilation between the nasal cavity and maxillary sinus.
In seven of the studies, PE had an effect on nasal airway resistance; in five of those seven, PE also improved nasal symptom scores, considered to be more indicative of a clinical effect.