The arrow was a weapon in their culture, it was used to hunt and provide for their families as well as offer protection, and because of this it was a tool for sustaining life. One of the biggest factors in altering the meaning, is the way the arrow is depicted or placed in the tattoo design.
1 Symptoms of blood clots in the lung (pulmonary embolus) are chest pain, shortness of breath, and rapid pulse and breathing.  Symptoms of a stroke (blood clot in an artery of the brain) include loss of speech, vision, and weakness on one side of the body.
Signs and Symptoms of Blood Clots. The signs and symptoms of blood clots range from deep vein thrombosis (DVT) to pulmonary embolism (PE). The symptoms of clotting depend on the location of the affected blood vessel and whether the vessel is totally or partially blocked by the clot. Clinical Spectrum of Clotting. Deep vein thrombosis (DVT)