Results 251 to 260 of about 109,154 (297)

Nasal Airway Resistance Computer

The Laryngoscope, 1977
An analogue computing system for the measurement of nasal airway resistance (Rn) has been developed. The instrument operates on the principle of measuring the transnasal pressure required to generate a measured nasal airflow rate. The system computes and displays inspiratory or expiratory nasal airway resistance measured at a preselected flow rate. The
L H, Hamilton, N T, Christman
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Upper Airway Resistance Syndrome

Respiration, 2009
Obstruction of the upper airway may cause arousals resulting in daytime sleepiness and cardiovascular disturbances. The upper airway resistance syndrome may easily be overlooked because conventional measurements of oronasal airflow and thoracic and abdominal efforts are not sensitive enough.
K H, Rühle, E, Schlenker, W, Randerath
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Upper airway resistance syndrome

Sleep Medicine Reviews, 1999
This article reviews the clinical picture, diagnosis and management of the upper airway resistance syndrome (UARS). Presently, there is not enough data on key points like the frequency of UARS and the morbidity associated with this condition. Furthermore, the existence of LIARS as an independent sleep disorder and its relation with snoring and ...
J M, Montserrat, J R, Badia
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The Effect of Glucagon on Airway Resistance

The Journal of Clinical Pharmacology, 1975
Nine subjects with obstructive airway disease took part in this double-blind study of the effect of glucagon in relieving bronchoconstriction compared with isoproterenol or isotonic saline. Drugs were administered via an in-line intermittent positive-pressure breathing unit. FEV1, MEF, PEF, and nitrogen washout data were evaluated.
R, Imbruce, A, Goldfedder, W, Maguire, W, Briscoe, S, Nair   +4 more
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Peripheral Airways Resistance in Smokers

American Review of Respiratory Disease, 1992
Abstract To determine peripheral airways resistance (Rp) in asymptomatic smokers, we used a wedged bronchoscope technique to study 19 volunteers (18 to 44 yr of age) who actively smoked for 2 to 28 pack-years. A fiberoptic bronchoscope was wedged in a subsegmental bronchus of the right upper lobe.
E M, Wagner, E R, Bleecker, S, Permutt, M C, Liu   +3 more
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Resistance and Collapse in Bronchial Airways

Clinical Science, 1970
1. The Forced Expiratory Volume (FEV) was measured in normal persons and patients with obstructive airways disease at mouth pressures from 0 mmHg to levels high enough to prevent air flow altogether by using a Starling resistor at the mouth. 2.
P, Howard, I W, Webster
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Airway Resistance of the Voice Button

Archives of Otolaryngology - Head and Neck Surgery, 1982
Airway resistance calculations were completed for Voice Button prostheses. Resistance of these devices ranged from about 285 to 440 cm H2O/L/s, revealing that the opposition these prostheses offer to airflow through them is substantial. In this circumstance, a reduction inthe efficiency with which tracheoesophageal voice is produced would be expected.
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Comparative Measurements of Airway Resistance

Respiration, 2009
Three different ways to calculate airway resistance with the whole body plethysmograph during spontaneous breathing and the MBC maneuver were tested on normal subjects and patients with obstructive airway disease. The ‘effective resistance values’ calculated by applying periodic electric current theory correlate well with a linear interpolation of the ...
H, Matthys, U, Orth
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The Upper Airway Resistance Syndrome

Chest, 1999
The upper airway resistance syndrome (UARS) is a recently described form of sleep-disordered breathing in which repetitive increases in resistance to airflow within the upper airway lead to brief arousals and daytime somnolence. This review will first describe the chronological progression of our understanding of UARS within the broader context of ...
E N, Exar, N A, Collop
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Oxygen, Isoprenaline and Airways Resistance

Respiration, 2009
Airways resistance was measured in six patients with chronic bronchitis before and after the inhalation of 30 % oxygen in nitrogen; after oxygen breathing there was a significant decrease in airways resistance. Measurements of airways resistance were made again in the same patients before and after the inhalation of isoprenaline; this was followed by a
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