Results 21 to 30 of about 4,255 (175)

Positive effort dependence of maximal expiratory flow

open access: yes, 1987
The maximal expiratory-flow volume (MEFV) curve in normal subjects is thought to be relatively effort independent over most of the vital capacity (VC). We studied seven normal males and found positive effort dependence of maximal expiratory flow between
R. G. Castile, J. Mead, J. L. Allen
core   +1 more source

Discriminant analysis of asthmatic patients and healthy adults using maximal expiratory indices [PDF]

open access: yes, 1989
The selection of effective maximal expiratory was evaluated using discriminant analysis of asthmatic patients and healthy adults in this review. Maximal expiratory volume-time and flow-volume (MEVT and MEFV) curves were drawn for young non-smoking ...
Meguro, Tadamichi   +3 more
core   +1 more source

Expiratory flow limitation

open access: yes, 1983
The first major advance in understanding expiratory flow limitation of the lungs came with the description of isovolume pressure-flow curves. These curves documented the existence of a volume-dependent limit to maximal expiratory flow and led directly ...
R. E. Hyatt
core   +1 more source

Airway dynamics in transition between peak and maximal expiratory flow

open access: yes, 1985
Expiratory flow-volume curves with periodic interruption of flow showed flow transients exceeding maximal flow (Vmax) measured on the maximum expiratory flow-volume (MEFV) curve in a mechanical lung model and in five tracheotomized, vagotomized, open ...
O. F. Pedersen, S. Lyager, R. H. Ingram
core   +1 more source

Functional Magnetic Nerve Stimulation: The development of a method of generation of explosive expiratory flows in the intubated patient through abdominal muscle stimulation. [PDF]

open access: yes, 2012
Functional Magnetic Nerve Stimulation: The development of a method of generation of explosive expiratory flows in the intubated patient through abdominal muscle stimulation.
Turnbull, David
core  

Effects of airway tone and volume history on maximal expiratory flow in asthma

open access: yes, 1987
We assessed the difference between isovolumic maximal expiratory flows (Vmax) using maneuvers begun at mid-lung volumes, so-called partial expiratory flow-volume curves (P), vs.
R. H. Ingram, B. M. Pichurko
core   +1 more source

Seasonal change in maximal expiratory flow-volume pattern in patients with Japanese cedar pollenosis.

open access: yes, 1993
Fifteen patients with Japanese cedar pollenosis were examined for lower airway function. Flow-volume patterns obtained from flow-volume and volume-time curves during the pollen season (March) and outside of the pollen season (June) were evaluated.
Saito, Chisato   +5 more
core   +1 more source

The Concavity of the Maximal Expiratory Flow–Volume Curve Reflects the Extent of Emphysema in Obstructive Lung Diseases [PDF]

open access: yesScientific Reports, 2019
AbstractA concave-shaped maximal expiratory flow-volume (MEFV) curve is a spirometric feature in chronic obstructive pulmonary disease (COPD). The MEFV curve is characterized by an increase in the Obstructive Index, which is defined as a ratio of forced vital capacity to the volume-difference between two points of half of the peak expiratory flow on ...
Fumi Mochizuki   +14 more
openaire   +2 more sources

Prediction of maximal expiratory flow in excised human lungs

open access: yes, 1980
The predictions of the wave-speed theory of flow limitations were tested against measured values of maximal expiratory flow (Vmax) in nine normal excised human lungs.
E. Bar-Yishay, R. E. Hyatt, T. A. Wilson
core   +1 more source

Assessing the repeatability of expiratory flow limitation during incremental exercise in healthy adults

open access: yesPhysiological Reports
We sought to determine the repeatability of EFL in healthy adults during incremental cycle exercise. We hypothesized that the repeatability of EFL would be “strong” when assessed as a binary variable (i.e., absent or present) but “poor” when assessed as ...
Jack R. Dunsford   +5 more
doaj   +1 more source

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