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Effects of Nasal Prongs on Nasal Airflow Resistance
Chest, 2000The aim of this study was to investigate whether nasal prongs, which have been proposed to assess nasal flow during sleep, affect nasal airflow resistance (NR).NR was estimated by posterior rhinomanometry at a 0.5 L/s flow, under eight conditions: in the basal state, and with seven different nasal prongs.The study was performed in 17 healthy supine ...
A Coste, Alain Harf, E Dahan
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The Relationship Between Nasalance and Nasal Resistance to Airflow
Acta Oto-Laryngologica, 1990The relationship between nasal airway resistance and nasalance in healthy volunteers and in subjects suffering from symptoms of acute rhinitis was investigated. A non-invasive objective measure of nasalance using the Nasometer (Kay Electronics) was used and an inverse correlation between airway resistance and nasalance was found (r = 0.67, r2 = 0.46, p
R G Williams
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Nasal resistance—a reliable assessment of nasal patency?
Clinical Otolaryngology, 1995This study was undertaken to determine the distribution of nasal resistance in a healthy white population. One hundred subjects without nasal complaints were selected for the investigation. The test subjects were divided into two groups on the basis of anterior rhinoscopy. Group 1 included 60 subjects with rhinoscopically normal noses. Group 2 included
Szucs, Eva +2 more
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Nasal resistance during infancy
Respiration Physiology, 1978Nasal Resistance (Rn) was measured in 30 Caucasian and 13 Negro infants during the 1st year of life, using an adaptation of the posterior rhinomanometric method. Concurrent measurements of Thoracic Gas Volume (TGV) and Airway Resistance during nose breathing (Raw (n) were made using the plethysmographic technique.
J, Stocks, S, Godfrey
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Combined Effects of a Nasal Dilator and Nasal Prongs on Nasal Airflow Resistance
Chest, 2001Nasal prongs (NPs), when used to assess nasal flow, can result in dramatic increases in nasal airflow resistance (NR). The aim of this study was to investigate whether the NP-induced increases in NR could be corrected by the simultaneous use of an internal nasal dilator (ND).NR was estimated by posterior rhinomanometry, in the basal state (NRb), and ...
E Dahan, M P D'Ortho
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Numerical study of the effect of the nasal cycle on unilateral nasal resistance
Respiratory Physiology and Neurobiology, 2015We used computational fluid dynamics to study the effects of the nasal cycle on the modification of unilateral nasal resistance using nasal cavity models from 2 different patients with chronic rhinosinusitis. A steady airflow field with an inspiratory flow rate of 250 mL/s was simulated using ANSYS-FLUENT v14.5.
Seung-Kyu Chung, Yang Na
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Nocturnal Nasal Congestion and Nasal Resistance
The Laryngoscope, 1999AbstractObjectives: To compare total nasal resistance (TNR) in upright and supine positions in patients who did and did not complain of nocturnal (supine) nasal congestion symptoms without daytime (upright) congestion, and to determine what other conditions were associated with nocturnal nasal congestion (NNC) symptoms.Study Design: A prospective study
R H, Stroud, S T, Wright, K H, Calhoun
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Otolaryngology–Head and Neck Surgery, 1985
Eighty normal adults without nasal symptoms were studied to determine normal nasal resistance values and the variation of nasal resistance in normal adults. A microprocessor‐based system for collection and analysis of transnasal pressure and flow was used to obtain nasal resistance values.
J F, Pallanch, T V, McCaffrey, E B, Kern
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Eighty normal adults without nasal symptoms were studied to determine normal nasal resistance values and the variation of nasal resistance in normal adults. A microprocessor‐based system for collection and analysis of transnasal pressure and flow was used to obtain nasal resistance values.
J F, Pallanch, T V, McCaffrey, E B, Kern
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The Laryngoscope, 1985
AbstractRhinometry has provided a quantitative and objective means of assessing nasal airway patency. Previous investigators have established normal nasal resistances for adults and newborn infants. Less material and no such normal references are available for the pediatric ages.
J J, Principato, P, Wolf
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AbstractRhinometry has provided a quantitative and objective means of assessing nasal airway patency. Previous investigators have established normal nasal resistances for adults and newborn infants. Less material and no such normal references are available for the pediatric ages.
J J, Principato, P, Wolf
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Tailored Nasal Surgery for Normalization of Nasal Resistance
Facial Plastic Surgery, 1996The nose acts as a physiologic airway resistor, accounting for around 50% of total airway resistance. Adequate nasal resistance is essential not only for correct functioning of the nose but to ensure normal pulmonary physiology. Pathological nasal resistance is determined by alterations in the shape and volume of the nasal cavities that singly or in ...
G, Sulsenti, P, Palma
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