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.
Legs and arms: Symptoms of blood clots in the legs and arms vary and may include pain or cramping, swelling, tenderness, warmth to the touch and bluish- or red-colored skin. Clots that occur in larger veins are called deep vein thrombosis (DVT). Blood clots can also occur in smaller, more superficial (closer to the skin) veins. Heart: Common symptoms for blood clots in the heart include pain in the chest and left arm, sweating and difficulty breathing.