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transudation

transudation

9.9
Fluid slowly moving through a vessel or membrane because of pressure, not inflammation
  • noun
  • /ˌtrænzjʊˈdeɪʃən/
  • Specialized
translation icon : transudación
  • The doctor explained that transudation is a normal process that allows nutrients to reach cells through the blood vessel walls.

Examples

  • When arteriovenous gradient changes occur, transudation of fluid goes into the interstitial space if the tissue pressure does not return to normal with muscle relaxation.

    Academic text (2004)
  • When transudation occurs, fluid is pushed through the capillary wall into surrounding tissue due to pressure differences.

  • In patients with heart failure, increased pressure can lead to excessive transudation of fluid into the lungs.

Surface Forms

transudation singular
transudations plural

Morphology

transudation = transudate (opaque) = transud + ation

The derivation from the verb 'transudate' to the noun by '-ation' is regular and transparent morphologically, but the base 'transudate' is a specialized medical term unfamiliar to most learners.

Etymology

Transudation comes from the parts trans- 'across' and sudare 'to sweat', so imagine fluid 'sweating across' a vessel wall. So transudation is the slow process of fluid passing across a membrane because of pressure differences, not because of inflammation.