Results 161 to 170 of about 181,289 (206)
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Nasal airflow: resistance and sensation
The Journal of Laryngology & Otology, 1989AbstractFor many years nasal resistance to airflow measured by rhinomanometry has been regarded as the objective measure of nasal patency. However, recently it has become apparent that this may not be the case.The present study was designed to affirm or refute this view by using large numbers of subjects and observations.Five hundred estimations of ...
A S, Jones, D J, Willatt, L M, Durham
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Nasal Resistance and Nasal Blood Flow in Postural Changes
Acta Oto-Laryngologica, 1988Posture greatly influences nasal resistance. To investigate whether nasal blood flow synchronizes with nasal resistance during changes in posture, correlation coefficients were calculated based on findings from both nasal cavities in 14 normal subjects.
N, Kurita +3 more
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Nasal Cycle and Postural Variations in Nasal Resistance
Annals of Otology, Rhinology & Laryngology, 1982The relationship between the nasal cycle and postural variations in unilateral nasal resistance (UNR) was observed in ten normal subjects. During the nasal cycle, postural variations in UNR were notable in congested nasal chambers; UNR at 0° from a horizontal plane was found to be higher than at greater angles.
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The nasal resistance of newborn infants
The Journal of Pediatrics, 1965The resistance of the nasal air passages, which is an important factor in the mechanics of respiration in newborn infants, was found to be about one fourth of the total lung resistance. It would appear that the nasal passages contribute a relatively smaller part (slightly less than half) of the airway resistance than in adults.
G, Polgar, G P, Kong
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Frequency Dependence of Effective Nasal Resistance
Annals of Otology, Rhinology & Laryngology, 1984Forced random noise techniques were used to characterize the effective resistance of the nasal passages in normal subjects and subjects who were candidates for surgical correction of nasal obstruction. The slope of the effective resistance curve was characterized by the average resistances over 3 to 5 Hz and 13 to 15 Hz.
J M, Fullton +3 more
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Nasal Carriage of Methicillin Resistant Staphylococci
Microbial Drug Resistance, 2014Coagulase-negative staphylococci (CoNS) are believed to function as reservoirs, as well as possible sources of staphylococcal chromosome cassette mec (SCC mec ) to Staphylococcus aureus , but the frequency ...
Faria, Nuno A. +5 more
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Nasal Resistance in Obstructive Sleep Apnea
Chest, 1994Acute increases in nasal resistance are known to induce upper airway occlusion in predisposed subjects. With the limited efficacy of nasal surgery alone in the treatment of obstructive sleep apnea (OSA), the relevance of chronically increased nasal resistance in the pathophysiologic features of OSA remains undetermined.Seventy-one patients with OSA ...
M, Atkins +4 more
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Quantitative Measurement of Nasal-Airway Resistance
Archives of Otolaryngology - Head and Neck Surgery, 1970Objective measurements of nasal-airway patency have been difficult, and in the past limited to research situations. A new instrument, the rhinoresistometer, has been developed to measure nasal-airway resistance. This instrument, utilizing a new concept, is simple and has promise as a device that can be adapted to the clinical evaluation of patients ...
H M, Reeves, W K, Wright, M, Novakovic
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Snoring and nasal resistance during sleep
The Laryngoscope, 1993AbstractAlthough it is widely accepted that nasal obstruction leads to snoring and sleep apnea, the relationship between these variables is not clear, mainly because of the lack of studies in which nasal resistance (Rna) and snoring were measured concurrently.
H, Miljeteig +5 more
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Effects of exercise on nasal resistance and nasal blood flow
Acta Oto-Laryngologica, 1987Nasal resistance and nasal blood flow were measured consecutively before exercise, immediately after exercise, 5, 10, 15, 20, 25, and 30 minutes after exercise in 11 normal subjects and 18 patients with perennial allergic rhinitis. Nasal resistance was measured by Nihon-Koden Rhinorheograph MRP 2100, and nasal blood flow was measured by Periflux PF2, a
M, Ohki +3 more
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