Old Smokey: with greatest respect
Take the aspirin (if you have no GI problems) it is a proven thrombolytic and and can go a long way in preventing DVT.
By the way DVT( in the legs) can be checked by Homan's sign where fforcible backward tilting of the foot (dorsiflexion) produces calf pain, but all that sitting on long hauls, or sitting and PPruneing or doing maths in the 'back room' does put you in a higher risk category. So, weighing risks/ benifits I'd take the 81 mg every day.
regards,
rhovsquared
and you too Mutt and John tullamarine
edited to say _ AS far as items 3 and 4 I, really have to look that up not on the web; I'll check the biogical and medical literature i.e JAMA or NEJM or Lancet... not really sure just mostly about DVT but it is a prostoglandin inhibitor and i have heard of some effect in lowering C-reactive protein levels (a sign of inflamatory disease) but nowadays they have buffered versions and it one of the oldest drug in the Pharmacopea.
rhov