Acoustic Rhinometry in Preschool Children

2007 ◽  
Vol 137 (1) ◽  
pp. 39-42 ◽  
Author(s):  
Wei Qian ◽  
Wenwen Chen ◽  
Joseph M. Chen ◽  
James Haight
Keyword(s):  
Preschool Children ◽  
Nasal Cavity ◽  
Volume Measurement ◽  
Acoustic Rhinometry ◽  
Nasal Resistance ◽  
Sectional Area ◽  
Cavity Volume ◽  
Nasal Patency ◽  
Cross Sectional ◽  
Significant Difference

OBJECTIVE: The aim of this study was to measure nasal cavity volume (NV) in preschool children with the use of acoustic rhinometry (AR). STUDY DESIGN AND SETTING: Prospective study: 1) Nasal cavity models were used to test the correlations between NV, minimal cross-sectional area (MCA), and nasal resistance; 2) 97 four-year-olds (48 boys, 49 girls) and 137 five-year-olds (68 boys, 69 girls) children were selected to undergo AR. RESULTS: 1. Model tests showed that the resistance correlated better with the changes of the volume than the MCA. 2. The average bilateral NV in preschool children was 2.03 ± 0.4 mL. There was no significant difference in either gender ( P = 0.2) or age ( P = 0.197). CONCLUSIONS: Volume measurement appears more sensitive and reliable than the MCA in assessing nasal patency. AR was easily performed on preschool children, and normative NV values were achieved. SIGNIFICANCE: The results and conclusions can be used to establish a standardized technique for AR measurement and interpretation.

Measurement of nasal patency in anesthetized and conscious dogs

2002 ◽  
Vol 92 (2) ◽  
pp. 617-621 ◽  
Author(s):  
Michael C. Koss ◽  
Yongxin Yu ◽  
John A. Hey ◽  
Robbie L. McLeod
Keyword(s):  
Nasal Cavity ◽  
Nasal Congestion ◽  
Conscious State ◽  
Acoustic Rhinometry ◽  
Cavity Volume ◽  
Nasal Patency ◽  
Cross Sectional ◽  
Chronic Model ◽  
Thiopental Sodium ◽  
Conscious Animals

Experiments were undertaken to characterize a noninvasive chronic, model of nasal congestion in which nasal patency is measured using acoustic rhinometry. Compound 48/80 was administered intranasally to elicit nasal congestion in five beagle dogs either by syringe (0.5 ml) in thiopental sodium-anesthetized animals or as a mist (0.25 ml) in the same animals in the conscious state. Effects of mast cell degranulation on nasal cavity volume as well as on minimal cross-sectional area ( A min) and intranasal distance to A min ( D min) were studied. Compound 48/80 caused a dose-related decrease in nasal cavity volume and A min together with a variable increase in D min. Maximal responses were seen at 90–120 min. Compound 48/80 was less effective in producing nasal congestion in conscious animals, which also had significantly larger basal nasal cavity volumes. These results demonstrate the utility of using acoustic rhinometry to measure parameters of nasal patency in dogs and suggest that this model may prove useful in studies of the actions of decongestant drugs.

Effects of the Breathe Right Nasal Strips on Nasal Ventilation

1997 ◽  
Vol 11 (5) ◽  
pp. 399-402 ◽  
Author(s):  
Jan Gosepath ◽  
Wolf J. Mann ◽  
Ronald G. Amedee
Keyword(s):  
Nasal Cavity ◽  
Physical Performance ◽  
Cross Sectional Area ◽  
Acoustic Rhinometry ◽  
Sectional Area ◽  
Nasal Breathing ◽  
Cross Sectional ◽  
Subjective Impression ◽  
Breathe Right Nasal Strips ◽  
And Training

The Breathe Right nasal strips are more and more commonly used, mainly by athletes, who hope to enhance their physical performance in competition and training. The effect of the device in such situations is uncertain and perhaps somewhat controversial. To investigate the effects of the nasal strips on nasal ventilation, 20 Caucasian individuals were objectively assessed using anterior rhinomanometry and acoustic rhinometry. The results showed a significant increase in all subjects of transnasal airflow and in the average cross-sectional area of the nasal cavity that quantifies objectively the subjective impression of improved nasal breathing. In such patients where an improvement in nasal ventilation is desired, the use of the Breathe Right nasal strips seems to offer a beneficial treatment.

scholarly journals Effect of rapid maxillary expansion on the dimension of the nasal cavity and on facial morphology assessed by acoustic rhinometry and rhinomanometry

2012 ◽  
Vol 17 (4) ◽  
pp. 129-133 ◽  
Author(s):  
Carla Enoki Itikawa ◽  
Fabiana Cardoso Pereira Valera ◽  
Mírian Aiko Nakane Matsumoto ◽  
Wilma Terezinha Anselmo Lima
Keyword(s):  
Nasal Cavity ◽  
Nasal Bone ◽  
Inferior Turbinate ◽  
Rapid Maxillary Expansion ◽  
Mouth Breathing ◽  
Acoustic Rhinometry ◽  
Facial Morphology ◽  
Nasal Resistance ◽  
Maxillary Expansion ◽  
Cross Sectional

OBJECTIVE: To assess the effects of rapid maxillary expansion on facial morphology and on nasal cavity dimensions of mouth breathing children by acoustic rhinometry and computed rhinomanometry. METHODS: Cohort; 29 mouth breathing children with posterior crossbite were evaluated. Orthodontic and otorhinolaryngologic documentation were performed at three different times, i.e., before expansion, immediately after and 90 days following expansion. RESULTS: The expansion was accompanied by an increase of the maxillary and nasal bone transversal width. However, there were no significant differences in relation to mucosal area of the nose. Acoustic rhinometry showed no difference in the minimal cross-sectional area at the level of the valve and inferior turbinate between the periods analyzed, although rhinomanometry showed a statistically significant reduction in nasal resistance right after expansion, but were similar to pre-treatment values 90 days after expansion. CONCLUSION: The maxillary expansion increased the maxilla and nasal bony area, but was inefficient to increase the nasal mucosal area, and may lessen the nasal resistance, although there was no difference in nasal geometry. Significance: Nasal bony expansion is followed by a mucosal compensation.

scholarly journals A comparison of minimal cross sectional areas, nasal volumes and peak nasal inspiratory flow between patients with obstructive sleep apnea and healthy controls

2016 ◽  
Vol 54 (4) ◽  
pp. 342-347
Author(s):  
M.H.S. Moxness ◽  
V. Bugten ◽  
W.M. Thorstensen ◽  
S. Nordgard ◽  
G. Bruskeland
Keyword(s):  
Nasal Cavity ◽  
Inspiratory Flow ◽  
Cross Sectional Area ◽  
Healthy Controls ◽  
Sectional Area ◽  
Cavity Volume ◽  
Cross Sectional ◽  
The Mean ◽  
And Function ◽  
Peak Nasal Inspiratory Flow

Background: The differences in nasal geometry and function between OSA patients and healthy individuals are not known. Our aim was to evaluate the differences in nasal geometry and function using acoustic rhinometry (AR) and peak nasal inspiratory flow (PNIF) between an OSA population and healthy controls. Methodology: The study was designed as a prospective case-control study. Ninety-three OSA patients and 92 controls were enrolled from 2010 to 2015. The minimal cross-sectional area (MCA) and the nasal cavity volume (NCV) in two parts of the nose (MCA0-3/NCV0-3 and MCA3-5.2/NCV3-5.2) and PNIF were measured at baseline and after decongestion. Results: The mean MCA0-3 in the OSA group was 0.49 cm2; compared to 0.55 cm2 in controls. The mean NCV0-3 correspondingly was 2.51 cm3 compared to 2.73 cm3 in controls. PNIF measured 105 litres/minute in the OSA group and 117 litres/minute in the controls. Conclusions: OSA patients have a lower minimum cross-sectional area, nasal cavity volume and peak inspiratory flow compared to controls. Our study supports the view that changes in the nasal cavity may contribute to development of OSA.

Relationship between nasal cavity volume changes and nasalance

2008 ◽  
Vol 123 (4) ◽  
pp. 407-411 ◽  
Author(s):  
H Birkent ◽  
U Erol ◽  
M Ciyiltepe ◽  
T L Eadie ◽  
A Durmaz ◽  
...  
Keyword(s):  
Nasal Cavity ◽  
Sectional Area ◽  
Cavity Volume ◽  
Volume Changes ◽  
Cross Sectional ◽  
Acoustic Characteristics ◽  
Nasal Decongestant ◽  
The Relationship ◽  
The Voice ◽  
Adult Volunteers

AbstractObjectives:The patency and volume of the nasal cavity affect the acoustic characteristics of the voice. The aim of this study was to investigate the effect of a nasal decongestant on nasal volumes and nasalance scores, and to determine the relationship between these measures.Methods:Acoustic rhinometry and nasometry were performed in a group of 21 adult volunteers both prior to and following application of a nasal decongestant. The relationship between changes in nasalance scores and acoustic rhinometric parameters was investigated.Results:After the application of nasal decongestant, statistically significant increases were observed in nasalance scores and in all of the acoustic rhinometric parameters assessed (i.e. minimal cross-sectional area, three cross-sectional areas, three volumes and total volume). However, no significant correlation was found between the changes in nasalance scores and acoustic rhinometric parameters.Conclusions:Nasal decongestion causes an increase in nasalance scores and nasal cavity volumes. However, the findings of this study indicate that changes in nasalance scores may result from factors other than nasal cavity volume changes.

scholarly journals Does Cosmetic Rhinoplasty Affect Nose Function?

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Seyed Behzad Pousti ◽  
Sam Touisserkani ◽  
Maryam Jalessi ◽  
Seyed Kamran Kamrava ◽  
Nader Sadigh ◽  
...  
Keyword(s):  
Cross Sectional Area ◽  
Acoustic Rhinometry ◽  
Sectional Area ◽  
Nasal Patency ◽  
Cross Sectional ◽  
Double Osteotomy ◽  
Cosmetic Rhinoplasty ◽  
The Cross

Objective. To evaluate the changes in nasal dimensions of healthy Iranian volunteered for cosmetic rhinoplasty after surgery using acoustic rhinometry. Methods. Pre- and postoperative nasal dimension of 36 cases undergoing cosmetic rhinoplasty were compared using acoustic rhinometry (AR), and the measured variables were distance to first and second constriction (d1, d2), first and second minimal cross-sectional area (MCA1, 2), and volume. Results. Mean age (SD) of cases were 24.63 (4.4) years. Septoplasty was performed in 12 cases (33.3%). After surgery, bilateral d1 and both MCA2 decreased significantly, while significant increase was observed in MCA1 postoperatively using decongestant. Cases with septoplasty experienced more increase in MCA1 and less constriction in MCA2 postoperatively. In cases with rhinoplasty alone, they received benefit from double osteotomy in MCA1. In either group of rhinoplasty with and without septoplasty, placing a strut was beneficial for patients. Discussion. The cross-sectional area of the nose is a major factor in the determination of airflow. Cosmetic rhinoplasty may generate a mix effect on nose function. Performing osteotomy may better help patients to save nasal patency, septoplasty is beneficial even in mildly deviated septums, and placing a strut may be beneficial in most of the cases.

Acoustic rhinometry in humans: accuracy of nasal passage area estimates, and ability to quantify paranasal sinus volume and ostium size

2005 ◽  
Vol 99 (2) ◽  
pp. 616-623 ◽  
Author(s):  
Erkan Tarhan ◽  
Mehmet Coskun ◽  
Ozcan Cakmak ◽  
Hüseyin Çelik ◽  
Mehmet Cankurtaran
Keyword(s):  
Nasal Cavity ◽  
Paranasal Sinus ◽  
Helmholtz Resonator ◽  
Side Branch ◽  
Cross Sectional Area ◽  
Acoustic Rhinometry ◽  
Nasal Passage ◽  
Sectional Area ◽  
Distance Curve ◽  
Cross Sectional

A comprehensive study that compared acoustic rhinometry (AR) data to computed tomography (CT) data was performed to evaluate the accuracy of AR measurements in estimating nasal passage area and to assess its ability of quantifying paranasal sinus volume and ostium size in live humans. Twenty nasal passages of 10 healthy adults were examined by using AR and CT. Actual cross-sectional areas of the nasal cavity, sinus ostia sizes, and maxillary and frontal sinus volumes were determined from CT sections perpendicular to the curved acoustic axis of the nasal passage. Nasal cavity volume (from nostril to choana) calculated from the AR-derived area-distance curve was compared with that from the CT-derived area-distance curve. AR measurements were also done on pipe models that featured a side branch (Helmholtz resonator of constant volume but two different neck diameters) simulating a paranasal sinus. In the anterior nasal cavity, there was good agreement between the cross-sectional areas determined by AR and CT. However, posterior to the sinus ostia, AR overestimated cross-sectional area. The difference between AR nasal volume and CT nasal volume was much smaller than the combined volume of the maxillary and frontal sinuses. The results suggest that AR measurements of the healthy adult nasal cavity are reasonably accurate to the level of the paranasal sinus ostia. Beyond this point, AR overestimates cross-sectional area and provides no quantitative data for sinus volume or ostium size. The effects of paranasal sinuses and acoustic resonances in the nasal cavity are not accounted for in the present AR algorithms.

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