Results 181 to 190 of about 264 (215)
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American Review of Respiratory Disease, 1993
Abstract A new pocket-sized ambulatory spirometer (meter) that measures FEV1 and PEFR was evaluated. The meter determines flow rate () from the differential pressure (P1-P2) across a sharp-edged orifice ( α √[P1–P2]). Ten meters were evaluated for accuracy using a computerized syringe to deliver the 24 ATS-recommended waveforms and ...
D P, Johns, M, Abramson, G, Bowes
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Abstract A new pocket-sized ambulatory spirometer (meter) that measures FEV1 and PEFR was evaluated. The meter determines flow rate () from the differential pressure (P1-P2) across a sharp-edged orifice ( α √[P1–P2]). Ten meters were evaluated for accuracy using a computerized syringe to deliver the 24 ATS-recommended waveforms and ...
D P, Johns, M, Abramson, G, Bowes
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Chronic Bronchitis and Decreased Forced Expiratory Flow Rates in Lifetime Nonsmoking Grain Workers
Chest, 1981To determine whether clinical symptoms and pulmonary function abnormalities were more common in lifetime nonsmoking grain elevator workers exposed to grain dust than in lifetime nonsmoking community control subjects who were not occupationally exposed to dust, we obtained an occupational health questionnaire, spirometric variables, and flow-volume ...
J, Dosman +5 more
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Intrasubject Variability of Forced Expiratory Flow Rates in Children with Chronic, Stable Asthma
Pediatric Asthma, Allergy & Immunology, 1987Spontaneous variability is an important consideration in defining "significant" change in forced expiratory flow rates. The currently used definitions are based on values from studies of normal populations and do not address the issue of individual variability.
W.R. OTTO, M.E. FRIEDMAN, J.G. EASTON
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Journal of The Royal Naval Medical Service, 1985
Abstract A prospective study of an early diagnostic test of small airway dysfunction, the forced expiratory flow between 75 and 85% of the forced vital capacity, was carried out in 230 RN submariners. All the subjects were male caucasians, of whom 105 were smokers and 125 non-smokers.
G M, Clifford, D J, Smith, C S, Searing
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Abstract A prospective study of an early diagnostic test of small airway dysfunction, the forced expiratory flow between 75 and 85% of the forced vital capacity, was carried out in 230 RN submariners. All the subjects were male caucasians, of whom 105 were smokers and 125 non-smokers.
G M, Clifford, D J, Smith, C S, Searing
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[Study of forced expiratory flow rates in respiratory paralysis].
Revue des maladies respiratoires, 1984Subjects with a complete paralysis of the abdominal muscles and severe or lesser involvement of the intercostals were studied. The author analysed, under electromyographic control, the flow-volume curves by measuring flow at 50% (V50) and at 25% (V25) of the observed and theoretical vital capacity (CV) above observed residual volume.
M, Leroy, O, Jaeger-Denavit, F, Liot
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British Journal of Diseases of the Chest, 1988
A hand-held spirometer, the Respiradyne (R), was evaluated for the measurement of forced expiratory volume in the first second (FEV1), forced vital capacity (FVC) and peak expiratory flow rate (PEFR) by comparing it with a Vitalograph spirometer (V) and a Wright's peak flow meter (W) in 70 subjects (normals and patients).
S C, Jenkins, N C, Barnes, J, Moxham
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A hand-held spirometer, the Respiradyne (R), was evaluated for the measurement of forced expiratory volume in the first second (FEV1), forced vital capacity (FVC) and peak expiratory flow rate (PEFR) by comparing it with a Vitalograph spirometer (V) and a Wright's peak flow meter (W) in 70 subjects (normals and patients).
S C, Jenkins, N C, Barnes, J, Moxham
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American Review of Respiratory Disease, 1991
Abstract Pre- and postshift spirometry was obtained on 1,113 blue collar workers employed at 35 work sites judged to have no hazardous occupational respiratory exposures on the basis of inspection visits and environmental sampling. In addition to spirometry, a standardized questionnaire was administered by trained personnel.
A J, Ghio +3 more
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Abstract Pre- and postshift spirometry was obtained on 1,113 blue collar workers employed at 35 work sites judged to have no hazardous occupational respiratory exposures on the basis of inspection visits and environmental sampling. In addition to spirometry, a standardized questionnaire was administered by trained personnel.
A J, Ghio +3 more
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Indian journal of physiology and pharmacology, 1990
A method for determination of %FVC (FEV/FVC%) at forced expiratory flow rate (FEF) of 1 lit./sec. and 0.5 lit/sec from the forced expiratory spirogram is described. This parameter is simpler to determine and is a better expression of end expiratory flow rate than FEF 75%-85%.
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A method for determination of %FVC (FEV/FVC%) at forced expiratory flow rate (FEF) of 1 lit./sec. and 0.5 lit/sec from the forced expiratory spirogram is described. This parameter is simpler to determine and is a better expression of end expiratory flow rate than FEF 75%-85%.
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The forced end-expiratory flow rate in chloromethyl ether workers.
Journal of occupational medicine. : official publication of the Industrial Medical Association, 1978Spirograms were made in 103 chemical workers, 72 of whom had been exposed for years to chloromethyl ethers to various degrees. The end-expiratory flow rate was below 60% of predicted in one-third of exposed men compared to only 3% of unexposed men. Smoking was a confounding factor.
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The Journal of sports medicine and physical fitness, 2006
Forced expiratory volume in 1 second (FEV1) is a reliable and easily measured lung function index, which is nowadays used for early detection of chronic obstructive pulmonary disease. It has also been established recently as an important predictor of all-cause, cardiovascular and cerebrovascular morbidity and mortality in the Western World.
N, Galanis +3 more
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Forced expiratory volume in 1 second (FEV1) is a reliable and easily measured lung function index, which is nowadays used for early detection of chronic obstructive pulmonary disease. It has also been established recently as an important predictor of all-cause, cardiovascular and cerebrovascular morbidity and mortality in the Western World.
N, Galanis +3 more
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