Myocardial Infarction – Summary
Notes
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1. Introduction
Myocardial Infarction (MI) is the necrosis of heart muscle due to prolonged ischemia,
usually caused by coronary artery blockage.
Key Points:
Life-threatening emergency
Can lead to arrhythmias, heart failure, or death
Early recognition and intervention are critical
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2. Causes / Risk Factors
, Atherosclerosis (most common)
Coronary artery thrombosis
Hypertension
Diabetes mellitus
Smoking
Obesity
Sedentary lifestyle
Family history of heart disease
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3. Pathophysiology
Plaque rupture or thrombosis → coronary artery occlusion
Reduced oxygen supply → myocardial ischemia
Notes
---
1. Introduction
Myocardial Infarction (MI) is the necrosis of heart muscle due to prolonged ischemia,
usually caused by coronary artery blockage.
Key Points:
Life-threatening emergency
Can lead to arrhythmias, heart failure, or death
Early recognition and intervention are critical
---
2. Causes / Risk Factors
, Atherosclerosis (most common)
Coronary artery thrombosis
Hypertension
Diabetes mellitus
Smoking
Obesity
Sedentary lifestyle
Family history of heart disease
---
3. Pathophysiology
Plaque rupture or thrombosis → coronary artery occlusion
Reduced oxygen supply → myocardial ischemia
