I started to to think the pathophysiology of elevating legs high next to the wall too often and when you are tired. I think possible manifestations
- some damage to valves of the veins (No!)
- because of collateral circulation, rhombus, heart damage, ... (No! Only in pathological situation but cannot be considered here. I think here that the risk of thrombus leaving legs is higher when you elevate your legs.)
Other side is when you should do this. To do regularly like every evening - may not be the right way to go. If you are tired and you do this, the vasomotor tonus is already lower so smooth muscles can less help to keep the blood so much more stress to the valves. Cardiac output is also less because of tiredness so lymphatic drainage is less. Elevating legs will move more lymph and blood to the middle of the body. So less lymph and blood can be moved back to legs when you tired.
What are the risks of elevating legs for too long time in Short time and Long time? Is there any advantage in elevating legs like increasing blood circulation of our body?
In what manner would elevating legs harm valves?
There should be no damage to valves because the direction of the blood circulation does not change. Blood is only going from legs to heart. I think the vasoconstriction of smooth muscles occurs first in the legs. This returns some blood to the legs.
How is lymph made - -?
Lymph is made in lymph nodes. After leaving the node, it is rich in lymphocytes. After leaving digestive system, it is rich in triglycerides so called chyle. I think after leaving legs it is also rich in triglycerides.
[W]hat is the danger of lymph leaving the legs?
I think the effective lymph (that one used in legs) is coming from the lymph nodes of the legs. Some lymph can be made in lymph nodes of legs so no danger of lymph leaving legs. However, some may come from the region of coxa. How long distance can lymph travel as effective unit of immune system?
If all lymph nodes are working, there is no danger of lymph leaving the legs, I think. If there are problems with lymph nodes of legs, then there may occur some constitutional symptoms of legs - but not sure about how fast.
Does the heart get tired like your head does, or like muscles after exercise?