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 a blood clot in the leg or deep vein thrombosis occur in the affected leg when a clot obstructs blood flow and causes inflammation. Signs and symptoms of DVT may include: Swelling; Gradual onset of pain; Redness; Warmth to the touch; Worsening leg pain when bending the foot; Leg cramps, especially at night, and often starting in the calf