What are the different types of ischemia?

Ischemia is the medical term for an insufficient blood supply to the heart, brain or any body part. If the problem is due to a partial fixed obstruction, the symptoms may only occur if the body part is working harder. For example, angina (chest pain) happens when a person exercises putting more demand on the heart that has a partial blockage in one or more of the heart’s coronary arteries. The heart muscle cells need more oxygen than the heart is requesting to meet the higher demand of the faster heart beat and more powerful contractions. When the person rests, the chest pain should resolve.