Blood sample - arterial
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
There is a slight risk of damage to nearby tissues when the blood is drawn. Blood can be taken from lower-risk sites, and techniques are used to minimize tissue damage.
If blood is easier to get from one location or side of your body, let the person who is drawing your blood know before starting the test.
Milzman D, Janchar T. Arterial puncture and cannulation. In: Roberts JR, Hedges JR, eds. Clinical Procedures in Emergency Medicine. 5th ed. Philadelphia, Pa: Saunders Elsevier; 2009:chap 20.
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