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Douglas bag

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bag

 [bag]
a flexible container; see also pocket, pouch and sac.
colostomy bag a receptacle worn over the stoma by a colostomy patient, to receive the fecal discharge.
Douglas bag a receptacle for the collection of exhaled air, permitting measurement of respiratory gases; typically used to measure dead space to tidal volume ratio (VD/VT).
ileostomy bag any of various plastic or latex pouches attached to the stoma either for collection of fecal material as a continent ileal reservoir or for collection of urine as a neobladder.
micturition bag a receptacle used for urine by ambulatory patients with urinary incontinence.
Politzer bag a soft bag of rubber for inflating the eustachian tube.
bag of waters popular name for the amniotic sac.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Doug·las bag

(dŭg'lăs),
a large bag in which expired gas is collected for several minutes to determine oxygen consumption in humans under conditions of actual work.
[C.G. Douglas]
Farlex Partner Medical Dictionary © Farlex 2012

Doug·las bag

(dŭg'lăs bag)
A large bag in which expired gas is collected for several minutes to determine oxygen consumption in humans under conditions of actual work.
[C.G. Douglas]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Douglas,

Claude G., English physiologist, 1882-1963.
Douglas bag - a large bag in which expired gas is collected for several minutes to determine oxygen consumption in humans under conditions of actual work.
Medical Eponyms © Farlex 2012
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References in periodicals archive
(2001) compared the ParvoMedics computerized system and Douglas bag method over a range of exercise intensities and reported that the limits of agreement of -0.08 to 0.11 l x [min.sup-1] for [VO.sub.2] are acceptable.
On the other hand Engebretson (1998) showed no significant differences between the Medical Graphics and the Douglas bag method in measured [V.sub.E], while La Mere et al.
(2000), when comparing a newly developed semi-automated metabolic system based on a Douglas bag design and the Medical Graphics system, reported a non significant difference of 1.5% in [VCO.sub.2].
Lack of agreement between gas exchange variables measured by two metabolic systems
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