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Physiology of asthma and involvement of small airways / Charles G. Irvin.

Henry Stewart Biomedical & Life Sciences Collection Available online

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Format:
Video
Author/Creator:
Irvin, Charles G., author.
Language:
English
Subjects (All):
Asthma--Psychological aspects.
Asthma.
Physical Description:
1 online resource (1 streaming video file (70 min.)) : color, sound
Place of Publication:
London : Henry Stewart Talks Ltd, 2022.
System Details:
video file
Contents:
Introduction
Pathophysiology of asthma - common wisdom
Talk outline
Airflow limitation/obstruction
Forced expiratory vital capacity maneuver (1)
Forced expiratory vital capacity maneuver (2)
Spirometry (1)
Spirometry (2)
FEV1
Uses of spirometry in asthma
The flow-volume loop (1)
The flow-volume loop (2)
The flow-volume loop (3)
Cross sectional variance for FEV1 and FVC
Spirometry is age, race and gender dependent
Spirometry (3)
The FEV1/FVC falls with age
Accelerated decline in lung function in asthma (1)
Accelerated decline in lung function in asthma (2)
Asthma severity and initiating treatment in youths
Levels of asthma control
The heterogeneous airways
What is a small airway ?
Resistance generation
Narrowing of parallel airways
Obstruction of parallel airways
Retrograde catheter
Retrograde catheter study
Peripheral airway resistance
Time of the day influence on peripheral resistance
Lung volumes
Hyperinflation defends the FEV1
Am chest tightness correlates with RV
Closing volume/capacity
Imaging modalities to evaluate small airways
MRI + hyperpolarized 3He (1)
Enhanced lung deposition with small particle size
Effect of particle size on FEV1
Reversibility
Spirometry (4)
Significant bronchodilator response
Bronchodilator responsiveness variability
Bronchodilator response flow volume loops
Patterns of responses
Isovolume shift
Best index of a bronchodilator effect (1)
Best index of a bronchodilator effect (2)
Best index of a bronchodilator effect (3)
Bronchodilator response is airway opening
MRI + hyperpolarized 3He (2)
Assumption: fall in FEV1 is due to "remodeling"
Mechanisms of airway obstruction
Airway remodeling: friend or foe?
Periodicity of airflow limitation
Asthmatic peak flow diary data
Airways hyper-responsiveness and PEF variability
Asthma: temporal periodicity
Forced oscillations test (FOT) (1)
Forced oscillations test (FOT) (2)
Resistance differences
Airways hyper-responsiveness (1)
Airways hyper-responsiveness (2)
Airway hyper-responsiveness correlations
Why perform an airways challenge test?
Bronchial provocation tests
Antigen-induced airway hyper-responsiveness
Exercise induced bronchospasm
Bronchoprovocation and severity
Inhibition of deep inspirations
Therapy guide through bronchoprovocation
Time courses of improvement in asthma
Summary (1)
Control of airway caliber and patency
Summary (2)
Heterogeneity of reversibility
Summary (3)
The signal is the noise
Summary (4)
Acknowledgements and dedication.
Notes:
Description based on publisher supplied metadata and other sources.
Retrieved April 13, 2024, from https://hstalks.com/bs/2532/.

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