In deep venous thrombosis does size of clot affect fatality?

Clot extends entire length of thigh and need to know if there is any preventive surgery that might avert death.

The fatality happens when part of the clot breaks away and causes a blockage. Keep to your medical advice.

yes.

A doctor is the only one qualified to give you an accurate answer to your inquiry after conducting tests, and a thorough exam of your leg. All we can do as laymen is speculate.We are not trained for this stuff.

The size of the clot matters some what but it's when some of it breaks away and blocks blood flow to other places that matters, and yes, if it blocks just right, you can die instantly! Some doctors now are using special ( block busting and blood thinning drugs ) first to try to dissolve the blocks to avoid surgery, but if that fails, there WILL have to be surgery! Good luck, if you are on the drugs, I hope for the best as some of my family is going through that now.

My dad has lived 74 relatively healthy years and now has DVT. He woke up one morning with his right leg twice its normal size and very painful. He dismissed its severity and nearly paid a hefty toll. He is now on Coumadin (powerful blood thinning agent. He probably will be for the remainder of his life.
Doctors would rather dissolve the clot. Surgery is considered High-Risk for a condition that is chronic.
The size of the clot is of little importance, it is the mere presence. Many times the clot will break off little pieces and those pieces "hang up" almost anywhere. One piece may not be life threatening, but an accumulation of pieces can bring on severe consequences. The most siginficant of which is the lungs(pulmanary embolous), heart(acute cardiac compromise), and brain(stroke). Any of these areas are potentially fatal, with the lungs(Pulmanary Emboli) having the highest mortality rate.

Yes see a doctor immediately! The clot becomes deadly when pieces break off (embolus) and travel to your lungs or heart and kill you.