A second needle is used to remove blood. The amount of blood removed varies depending on the individual and is determined by your cardiologist. The phlebotomy takes approximately thirty minutes. During this time the nurse will check your heart rate and blood pressure. Once finished, the needles are removed and you are observed until you are well enough to leave.
Side effects are very uncommon.
There is minor discomfort associated with the insertion of the needles which may cause some people to feel faint, nauseated, and start to perspire. After the phlebotomy you may experience dizziness and a feeling of being tired. These feelings can last a few days. Your iron stores may become depleted if periodic phlebotomies are necessary. Your doctor will monitor your body's iron stores and prescribe an iron supplement if needed.