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.
This is a medical emergency and may cause death. Symptoms of a blood clot include: Leg swelling (edema) Leg pain or tenderness. Leg redness. If you have these symptoms, call your healthcare provider. You may also have a D-dimer test if you have symptoms of a blood clot in the lungs, such as: Trouble breathing. Coughing (may cough up blood)