scholarly journals The Link Between the Shape of Maximal Expiratory Flow-Volume Curves and CT-Based Phenotypes in COPDGene

2020 ◽  
Author(s):  
K. Verstraete ◽  
N. Das ◽  
J.D. Crapo ◽  
E.K. Silverman ◽  
B.J. Make ◽  
...  
Keyword(s):  
Flow Volume ◽  
Maximal Expiratory Flow ◽  
Expiratory Flow

Pattern and mechanism of airway response to hypocapnia in normal subjects

1979 ◽  
Vol 47 (1) ◽  
pp. 8-12 ◽  
Author(s):  
C. F. O'Cain ◽  
M. J. Hensley ◽  
E. R. McFadden ◽  
R. H. Ingram
Keyword(s):  
Vital Capacity ◽  
Normal Subjects ◽  
Oxygen Mixture ◽  
Flow Volume ◽  
Mixture Density ◽  
Lung Capacity ◽  
Airway Constriction ◽  
Maximal Expiratory Flow ◽  
Airway Response ◽  
Expiratory Flow

We examined the bronchoconstriction produced by airway hypocapnia in normal subjects. Maximal expiratory flow at 25% vital capacity on partial expiratory flow-volume (PEFV) curves fell during hypocapnia both on air and on an 80% helium- 20% oxygen mixture. Density dependence also fell, suggesting predominantly small airway constriction. The changes seen on PEFV curves were not found on maximal expiratory flow-volume curves, indicating the inhalation to total lung capacity substantially reversed the constriction. Pretreatment with a beta-sympathomimetic agent blocked the response, whereas atropine pretreatment did not, suggesting that hypocapnia affects airway smooth muscle directly, not via cholinergic efferents.

scholarly journals Shape Analysis of the Maximal Expiratory Flow Volume Curve Among the Patients with Various Kind of Pulmonary Diseases

1982 ◽  
Vol 29 (1) ◽  
pp. 30-36
Author(s):  
Song Hyun Nam ◽  
Hyun Ha Park ◽  
Re Hwe Kim ◽  
Sung Koo Han ◽  
Ye Won Kim ◽  
...  
Keyword(s):  
Shape Analysis ◽  
Pulmonary Diseases ◽  
Flow Volume ◽  
Maximal Expiratory Flow ◽  
Volume Curve ◽  
Flow Volume Curve ◽  
Expiratory Flow

Volume Adjustment of Maximal Expiratory Flow Rates of Flow-Volume Loops

CHEST Journal ◽  
1992 ◽  
Vol 102 (5) ◽  
pp. 1636-1637
Author(s):  
Sema Umut ◽  
Bilun Gemicioğlu ◽  
Nurhayat Yildirim
Keyword(s):  
Flow Volume ◽  
Flow Rates ◽  
Maximal Expiratory Flow ◽  
Expiratory Flow ◽  
Expiratory Flow Rates

Spirometry and Maximal Expiratory Flow-Volume Curve Reference Standards for Polynesian, European, and Chinese Teenagers

CHEST Journal ◽  
1988 ◽  
Vol 94 (4) ◽  
pp. 792-798 ◽  
Author(s):  
Françoise Neukirch ◽  
René Chansin ◽  
Renata Liard ◽  
Monique Levallois ◽  
Philippe Leproux
Keyword(s):  
Reference Standards ◽  
Flow Volume ◽  
Maximal Expiratory Flow ◽  
Volume Curve ◽  
Flow Volume Curve ◽  
Expiratory Flow

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

2015 ◽  
Vol 219 ◽  
pp. 30-35 ◽  
Author(s):  
Paolo B. Dominelli ◽  
Glen E. Foster ◽  
Jordan A. Guenette ◽  
Hans C. Haverkamp ◽  
Neil D. Eves ◽  
...  
Keyword(s):  
Flow Volume ◽  
Maximal Expiratory Flow ◽  
Volume Curve ◽  
Flow Volume Curve ◽  
Expiratory Flow
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