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International Journal for Research Trends and InnovationHarendranath T G +2 more
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Chest, 2003
The mid-portion of the maximal expiratory flow-volume (MEFV) curve is often described by values of the mean forced expired flow as lung volume decreases from 75% to 25% of vital capacity (ie, forced expiratory flow, midexpiratory phase [FEF(25-75)]).
E Bar-Yishay +2 more
exaly +3 more sources
The mid-portion of the maximal expiratory flow-volume (MEFV) curve is often described by values of the mean forced expired flow as lung volume decreases from 75% to 25% of vital capacity (ie, forced expiratory flow, midexpiratory phase [FEF(25-75)]).
E Bar-Yishay +2 more
exaly +3 more sources
British Journal of Diseases of the Chest, 1983
A survey of three indices of ventilatory capacity, forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC) and peak expiratory flow rate (PEFR), was undertaken on 3490 Chinese inhabitants of Hong Kong. Nomograms have been constructed for the prediction of these three indices for subjects between the ages of 5 and 75 years.
K K, Lam +7 more
exaly +3 more sources
A survey of three indices of ventilatory capacity, forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC) and peak expiratory flow rate (PEFR), was undertaken on 3490 Chinese inhabitants of Hong Kong. Nomograms have been constructed for the prediction of these three indices for subjects between the ages of 5 and 75 years.
K K, Lam +7 more
exaly +3 more sources
The forced expiratory volume and the peak expiratory flow rate in pneumoconiosis
British Journal of Diseases of the Chest, 1966Summary One hundred and sixty men with coal-miner's pneumoconiosis were studied in two groups to ascertain whether a good correlation existed between the F.E.V. 1 and the P.E.F.R. The first group consisted of 100 miners without chronic bronchitis and the second of 60 miners with chronic bronchitis. Correlation was good in both groups.
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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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