Transient fall in oxygen intake during exercise in congestive heart failure

Chest. 1996 Sep;110(3):841-4. doi: 10.1378/chest.110.3.841.


We report four cases in which oxygen intake abruptly decreased during a graded exercise test. In all these cases, there was an acute event (arrhythmia, mitral regurgitation) that had very likely resulted in a decrease in cardiac output. These studies provide new evidence of oxygen intake dependence on oxygen transport, even in nonsteady-state situations.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Exercise / physiology*
  • Exercise Test
  • Heart Failure / etiology
  • Heart Failure / physiopathology*
  • Heart Rate
  • Humans
  • Male
  • Middle Aged
  • Oxygen Consumption*