Why does pulmonary embolus cause dyspnea?

... Pulmonary Embolus Risk Factors. Pulmonary emboli are most often caused by blood clots in the veins, especially veins in the legs or in the pelvis (hips. More rarely, air bubbles, fat droplets, amniotic fluid, or clumps of parasites or tumor... more.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.