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2017 ; 80
(2
): 105-112
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Spirometry and Bronchodilator Test
#MMPMID28416951
Sim YS
; Lee JH
; Lee WY
; Suh DI
; Oh YM
; Yoon JS
; Lee JH
; Cho JH
; Kwon CS
; Chang JH
Tuberc Respir Dis (Seoul)
2017[Apr]; 80
(2
): 105-112
PMID28416951
show ga
Spirometry is a physiological test for assessing the functional aspect of the
lungs using an objective indicator to measure the maximum amount of air that a
patient can inhale and exhale. Acceptable spirometry testing needs to be
conducted three times by an acceptable and reproducible method for determining
forced vital capacity (FVC). Until the results of three tests meet the criteria
of reproducibility, the test should be repeated up to eight times. Interpretation
of spirometry should be clear, concise, and informative. Additionally, spirometry
should guarantee optimal quality prior to the interpreting spirometry results.
Our guideline adopts a fixed normal predictive value instead of the lower limit
of normal as the reference value because fixed value is more convenient and also
accepts FVC instead of vital capacity (VC) because measurement of VC using a
spirometer is impossible. The bronchodilator test is a method for measuring the
changes in lung capacity after inhaling a short-acting ?-agonist that dilates the
airway. When an obstructive ventilatory defect is observed, this test helps to
diagnose and evaluate asthma and chronic obstructive pulmonary disease by
measuring reversibility with the use of an inhaled bronchodilator. A positive
response to a bronchodilator is generally defined as an increase of ?12% and ?200
mL as an absolute value compared with a baseline in either forced expiratory
volume at 1 second or FVC.
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