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paradoxical diaphragm phenomenon in Medicine

paradoxical diaphragm phenomenon

n.
  1. A phenomenon occurring in pyopneumothorax, hydropneumothorax, and some cases of injury in which the diaphragm on the affected side rises during inspiration and falls during expiration.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.