Journal of Applied Physiology, Vol 64, Issue 5 2240-2244, Copyright © 1988 by American Physiological Society

ARTICLES

A mouthpiece face mask for the exercising dog

J. Ampil, J. I. Carlin and R. L. Johnson Jr
Department of Internal Medicine, University of Texas Health Science Center, Dallas 75235.

To develop a rebreathing method for lung volumes, cardiac output with acetylene, and CO diffusing capacity in awake exercising dogs, we have modified and adapted the low-dead-space mask of Montefusco et al. (Angiology 34: 340-354, 1983). We have simplified the fabrication procedure, allowing the physiologist to make the device from parts that can be prefabricated before each dog is custom fitted with the mouthpiece. This decreases the anesthesia time required to custom fit the mouthpiece to each dog. We have also reduced the weight of the mask, making it more tolerable during exercise. We have validated that the mask is leak-free by having the dog rebreathe an inert insoluble gas, He, until equilibration is achieved between the bag and lung. Preliminary measurements of lung volume, cardiac output with acetylene, and CO diffusing capacity have been made during exercise.

This article has been cited by other articles:

				C. C. W. Hsia, D. M. Dane, A. S. Estrera, H. E. Wagner, P. D. Wagner, and R. L. Johnson Jr. Shifting sources of functional limitation following extensive (70%) lung resection J Appl Physiol, April 1, 2008; 104(4): 1069 - 1079. [Abstract] [Full Text] [PDF]

				C. C. W. Hsia, R. L. Johnson Jr., D. M. Dane, E. Y. Wu, A. S. Estrera, H. E. Wagner, and P. D. Wagner The canine spleen in oxygen transport: gas exchange and hemodynamic responses to splenectomy J Appl Physiol, November 1, 2007; 103(5): 1496 - 1505. [Abstract] [Full Text] [PDF]

				C. C. W. Hsia, R. L. Johnson Jr, P. McDonough, D. M. Dane, M. D. Hurst, J. L. Fehmel, H. E. Wagner, and P. D. Wagner Residence at 3,800-m altitude for 5 mo in growing dogs enhances lung diffusing capacity for oxygen that persists at least 2.5 years J Appl Physiol, April 1, 2007; 102(4): 1448 - 1455. [Abstract] [Full Text] [PDF]

				D. M. Dane, C. C. W. Hsia, E. Y. Wu, R. T. Hogg, D. C. Hogg, A. S. Estrera, and R. L. Johnson Jr. Splenectomy impairs diffusive oxygen transport in the lung of dogs J Appl Physiol, July 1, 2006; 101(1): 289 - 297. [Abstract] [Full Text] [PDF]

				C. C. W. Hsia, R. L. Johnson Jr, E. Y. Wu, A. S. Estrera, H. Wagner, and P. D. Wagner Reducing lung strain after pneumonectomy impairs oxygen diffusing capacity but not ventilation-perfusion matching J Appl Physiol, October 1, 2003; 95(4): 1370 - 1378. [Abstract] [Full Text] [PDF]

				R. L. Johnson Jr., C. C. W. Hsia, S.-I. Takeda, J. L. Wait, and R. W. Glenny Efficient design of the diaphragm: distribution of blood flow relative to mechanical advantage J Appl Physiol, September 1, 2002; 93(3): 925 - 930. [Abstract] [Full Text] [PDF]

				C. C. W. Hsia, S.-I. Takeda, E. Y. Wu, R. W. Glenny, and R. L. Johnson Jr. Adaptation of respiratory muscle perfusion during exercise to chronically elevated ventilatory work J Appl Physiol, November 1, 2000; 89(5): 1725 - 1736. [Abstract] [Full Text] [PDF]

				E. Y. Wu, C. C. W. Hsia, A. S. Estrera, R. H. Epstein, M. Ramanathan, and R. L. Johnson Jr Preventing mediastinal shift after pneumonectomy does not abolish physiological compensation J Appl Physiol, July 1, 2000; 89(1): 182 - 191. [Abstract] [Full Text] [PDF]

				S.-I. Takeda, M. Ramanathan, A. S. Estrera, and C. C. W. Hsia Postpneumonectomy alveolar growth does not normalize hemodynamic and mechanical function J Appl Physiol, August 1, 1999; 87(2): 491 - 497. [Abstract] [Full Text] [PDF]

				S.-I. Takeda, C. C. W. Hsia, E. Wagner, M. Ramanathan, A. S. Estrera, and E. R. Weibel Compensatory alveolar growth normalizes gas-exchange function in immature dogs after pneumonectomy J Appl Physiol, April 1, 1999; 86(4): 1301 - 1310. [Abstract] [Full Text] [PDF]