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Chest, Vol 67, 110-111, Copyright © 1975 by American College of Chest Physicians

ARTICLES

A simplified method for measuring helium closing volume

K McClelland and C Mittman

A simple method for delivering a constant volume of helium for the measurement of airway closing volume is described. Using a standard fiveway valve and PVC plastic irrigation pipe, a device was constructed which permits the delivery of a uniform volume of helium and avoids the troublesome valve change during inspiration. Results obtained when using this device were comparable to those with the use of conventional bag to contain the helium.




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Copyright © 1975 by the American College of Chest Physicians.