The effect of venous obstruction on effort tolerance is not well appreciated. We studied a patient with severe lower body venous obstruction (with near normal heart and lung function) who had marked exercise intolerance. Peak O2 uptake for leg exercise was reduced, but peak O2 uptake for upper extremities was normal. This difference indicates that severe venous obstruction can lead to exercise limitation.
- collateral veins
- exercise capacity
- inferior vena cava interruption
- peak O uptake
- upper extremities