University:
Liberty University
Course:
BIOM 500 | Introduction to Biomedical Sciences
Academic year:

2024
Views:

240

Pages:

6
Author:

Jabin F.

MYOCARDIAL INFARCTION Definition: MI refers to the process by which myocardial tissues are permanently destroyed in region of heart that are deprived of an adequate supply of blood because of a reduced coronary blood flow. MI defined as the disease condition which is caused by reduced blood flow in a coronary artery due to atherosclerosis and occlusion of thrombus. Types of myocardial Infarction Acute myocardial infarction Chronic MI infarction. Types of MI Transmural: It is associated with atherosclerosis involving major coronary artery. It is extended through the whole thickness of the heart muscle and result in complete occlusion. It is sub classified into anterior, posterior inferior. Subendocardial It involves small area in the subendocardial wall of the left ventricle ventricular septum It is due to decreased blood supply by narrowing coronary arteries. Spontaneous MI It occurs due to plaques, rupture Mismatching MI It occurs by O₂ demand and supply blood is mismatching due to Coronary artery spasm, embolism, anemia HTN. Post percutaneous Coronary Intervention MI • Percutaneous Coronary Intervention (PCI) is a non- Surgical Invasive Procedure with a goal to relieve the narrowing or occlusion of the artery and improve blood supply to the ischemia tissue. • It occurs after percutaneous Coronary Interventions procedure.