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Spirometry
Usefulness of lung function testing
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spir
Xpert
Spirometry
Lung growth & aging
Bronchial hyperresponsiveness
Global Lung Function Initiative
GOLD controversy
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Contours of Breathing
Usefulness of lung function testing
Spirometric tests are performed on a large scale with different objectives in mind,
e.g
.:
Additional information to
help establish a clinical diagnosis
in a patient.
A
ssess the prognosis in a patient. The FEV
1
has been so well studied that it is generally accepted that a low value, or a rapid decline, or large variability, is associated with an unfavorable prognosis and high morbidity. In COPD a low FEV
1
is usually not observed in subjects until they are in their forties or older.
Assess whether disease is present at an
early stage
,
i.e
. prior to overt clinical disease.
Assist in quantifying the severity of airway disease.
Assess the effect of therapy, such as
corticosteroids
,
bronchodilators
, but also their toxicity, for example in patients receiving cytostatic drugs, which may induce a restrictive ventilatory defect.
Delineating risk factors,
e.g
. the odds of developing future respiratory disease such as bronchial hyperresponsiveness, which may be regarded as a risk factor in various professions, or operative risks.
Monitoring whether the pattern of lung growth or aging is normal. This is mostly done by comparing the results of repeated investigation in one person with cross- sectional data; as we shall see assessing normal individual growth from comparison with cross- sectional data is fraught with
hidden dangers
.
Last modified on 12.07.2018 18:01
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Spirometry
Lung growth & aging
Bronchial hyperresponsiveness
Global Lung Function Initiative
GOLD controversy
Download
Contours of Breathing