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Segmental topography and aeration gradients of the human lungs

  • N. G. Sizintsev
  • B. I. Mazhbich
Physiology
  • 16 Downloads

Abstract

The method of regional electroplethysmography of the lungs was used to study the segmental topography of the air volume when the total preinspiratory lung volume corresponded to the functional residual capacity. In subjects recumbent in the supine position, besides a distinct dorsal-ventral gradient, there is also an equally marked apical-basal gradient, the origin of which cannot be explained from the standpoint of a gravitational mechanism. The electroplethysmographic index of the air content in a part of the lungs can be converted into an index of the regional volume of air in the lungs, and it was also shown that, in principle, the regional total lung-capacity index can be calculated by electroplethysmography.

Key Words

electroplethysmography regional air volume of the lungs 

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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • N. G. Sizintsev
  • B. I. Mazhbich

There are no affiliations available

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