Ischemia

Definition

Ischemia is a condition characterized by reduced blood flow and oxygen supply to tissues, leading to tissue damage. It often results from blockages in the arteries due to conditions like atherosclerosis.

5 Must Know Facts For Your Next Test

1. Ischemia can lead to serious complications such as tissue necrosis and infarction if not promptly treated.
2. Bacterial infections, such as those caused by Staphylococcus aureus or Streptococcus pyogenes, can exacerbate ischemic conditions by promoting clot formation.
3. The immune response during bacterial infections can contribute to the development of ischemic lesions by causing inflammation and swelling.
4. Chronic ischemia may result in ulcers or gangrene, particularly in extremities with poor circulation.
5. Diagnosis of ischemia often involves imaging techniques like angiography or Doppler ultrasound to assess blood flow.

Review Questions

• What are the primary causes of ischemia in the circulatory system?
• How can bacterial infections worsen ischemic conditions?
• What diagnostic methods are used to detect ischemia?

Related terms

Atherosclerosis:

A condition where the arteries become narrowed and hardened due to plaque buildup.

Infarction: Tissue death caused by a lack of oxygen due to blocked blood supply.

Gangrene: The death of body tissue due to either a lack of blood flow or a serious bacterial infection.