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KMID : 0383819610080010075
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Tuberculosis and Respiratory Diseases
1961 Volume.8 No. 1 p.75 ~ p.80
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Spirometry and Broncho-spirometry in Lateral Decubitus Position
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김병기(金炳基)/Pyoung-Ki Kim
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Abstract
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Summary
Spirometry and broncho-spirometry were performed on 49 cases of chest diseases for
pro-operative examination. Among which 40 were pulmonary tuberculosis, 5were
unspecific broncho-spirometry ingection and 4 had empema. Most of the cases (45 out
of 49) had the illness more than 1 year of duration. Timed vital capacity decreased in 1
second value in considerable number of cases but 3 second value was in normal limit in
majority cases. However, only about 20% of the cases decreased in their V.C. and
M.B.C. significantly, and all of them belonged to the group of long standing illness.
Inspite of decrease of those V.C and M.B.C there were only two cases who showed Air
Velocity Index below 0.8. Decrease in V.C from sitting to supine was not so significant
but was significant from spirometry to broncho-spirometry.(13.7% decrease in average)
Vital capacity was slightly decreased in lateral decubitus position than in supine
position. Vital capacity was bigger in left lateral decubitus position or with the main
lesion downward. M.V. in broncho-spirometry was decreased 26% in average compare to
spirometry. The side with bigger V.C. had bigger O2consumption but the
O2consumption was not corresponding to the value of M.V.as it is with
V.C. Oxygen consumption has decreased(20%) in broncho-spirometry than in spirometry.
The elevation of base line was bigger in case the-side of bigger V.C. and bigger
O2consumption was placed in the upper position. When the base line
elevation was same, the V.C. was bigger in case the main lesion was underlying.
Inspiratory reserve volume was bigger apparently in spirometry when better functioning
lung was under lying, and it was more prominent in broncho-spirometry. Expiratory
reserve volume was markedly bigger in upper lying lung, especialy when it is better
functioning side. Elevation of base line was applied not only for checking the position of
tube but was also useful in estimation of the unilateral function together with diaphragm
movement and x-ray findings.
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