Results 131 to 140 of about 4,255 (175)

Variability in the Maximal Expiratory Flow Volume Curve in Asymptomatic Smokers and in Nonsmokers

The American Review of Respiratory Disease, 1974
Abstract Variability in maximal expiratory flow volume (MEFV) curves was studied in a group of non-smokers and asymptomatic smokers, using the body Plethysmograph to measure lung volume. Several factors were evaluated for their ability to predict maximal expiratory flows (MEF) at various lung volumes. Of the factors studied, age, sex,
Leo F Black, R E Hyatt
exaly   +3 more sources

The Characteristics of the Concavity of Descending Limb of Maximal Expiratory Flow-Volume Curves Generated by Spirometry

Lung
This study examined the concavity (angle β, central and peripheral concavity) of the descending limb of the maximal expiratory flow-volume (MEFV) curves to reflect various ventilatory defects, including obstructive, restrictive, or mixed patterns.We conducted a cross-sectional study collecting spirometry data from a healthcare center and a tertiary ...
Junfeng Lin, Jinping Zheng, Gao Yi
exaly   +3 more sources

Maximal Expiratory Flow Volume Curves in Workers Exposed to Asbestos

Respiration, 2009
We have studied 40 workers with varying industrial exposure to asbestos, using routine spirometry and maximal expiratory flow volume curves (MEFVC). Abnormalities of MEFVC were common and seen in those with normal spirometry and total lung capacity.
R, Rodriguez-Roisin, J E, Merchant, G M, Cochrane, B P, Hickey, M, Turner-Warwick, T J, Clark   +5 more
openaire   +2 more sources

Variability of Maximal Expiratory Flow-Volume Curve in Young Volley Players

Respiration, 2009
In order to assess the variability of forced expiratory flows, 15 male players (age 16–19 years, height 182–201 cm) of the Italian National Junior Volley team were studied twice with the pneumotachygraph of the computerized Hewlett-Packard Pulmonary System.
Viegi G, Giuliano G, Melocchi F, Pistelli G, Giuntini C   +4 more
openaire   +3 more sources

Quantifying the shape of the maximal expiratory flow–volume curve in mild COPD

Respiratory Physiology & Neurobiology, 2015
Maximal expiratory flow-volume (MEFV) curve evaluation using absolute and percent predicted values of flow and volume are used to diagnose respiratory disease, but the shape of the curve is rarely used. Three mathematical methods were used to quantify shape of MEFV curves in subjects with mild COPD (n=19) and matched healthy controls (n=15). Those with
Paolo B, Dominelli, Glen E, Foster, Jordan A, Guenette, Hans C, Haverkamp, Neil D, Eves, Giulio S, Dominelli, William R, Henderson, Denis E, O'Donnell, A William, Sheel   +8 more
openaire   +2 more sources

Assessment of Ventilatory Performance of Athletes Using the Maximal Expiratory Flow-Volume Curve

International Journal of Sports Medicine, 1986
We carried out a maximum expiratory flow-volume curve (MEFV) and a spirometric recording with 67 athletes of different ages (15-27 years) and disciplines (rowers, kayakists, cyclists, swimmers) and with 20 adult and 13 adolescent nonathletic controls of matching ages.
J F, Bertholon, J, Carles, A, Teillac
openaire   +2 more sources

Influence of matching volume on reproducibility of maximal expiratory flow-volume curves.

Bulletin europeen de physiopathologie respiratoire, 1984
We examined the influence of "matching volume" on intrasubject variability of the descending limb of maximal expiratory flow-volume (MEFV) curves on air and helium-oxygen (He) in 18 healthy subjects and 28 patients with airflow limitation. Duplicate forced expirations were analysed according to four methods of alignment.
B, Johansen, J R, Vale
openaire   +2 more sources

Early Detection of Obstructive Lung Disease by Analysis of Maximal Expiratory Flow-Volume Curves

Chest, 1973
The clinical application of maximum expiratory flow-volume (MEFV) curves in making an early diagnosis of emphysema and disease of small airways is reviewed. Previous analysis of the physiologic basis of the forced expiratory spirogram indicates that the MEFV curve contains the same information as the volume-time plot.
A F, Gelb, B J, MacAnally
openaire   +2 more sources

Maximal Expiratory and Inspiratory Flow-Volume Curves in Bilateral Vocal-Cord Paralysis

ORL, 2010
The maximal expiratory flow-volume (MEFV) and maximal inspiratory flow-volume (MIFV) curve present maximal attainable flows, plotted against the displaced volume at the mouth during a forced expiratory manoeuvre from total lung capacity (TLC) and a subsequent forced inspiratory manoeuvre from residual volume (RV), respectively. Depending on the glottic
J.M. Bogaard, K.H. Pauw, A. Versprille, H. Stam, A.F.M. Verbraak, A.J.J. Maas   +5 more
openaire   +1 more source

Maximal expiratory flow volume curve in quarry workers.

Indian journal of physiology and pharmacology, 2002
Maximal Expiratory Flow Volume (MEFV) curves were recorded with a computerized Spirometer (Med Spiror). Forced Vital Capacity (FVC), Forced Expiratory Volumes (FEV), mean and maximal flow rates were obtained in 25 quarry workers who were free from respiratory disorders and 20 healthy control subjects.
Arcot Sadagopa, Subhashini, Natesa, Satchidhanandam   +1 more
openaire   +1 more source