Final answer:
The four causes of impaired left ventricle systolic function are coronary artery disease, hypertension, myocarditis, and valvular heart disease.
Step-by-step explanation:
The four causes of impaired left ventricle systolic function are:
- Coronary artery disease: This is caused by atherosclerosis and risk factors like high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol consumption.
- Hypertension (high blood pressure): High blood pressure can lead to left ventricle hypertrophy and impaired systolic function.
- Myocarditis: Inflammation of the heart's muscle tissue can lead to impaired left ventricle function.
- Valvular heart disease: Malfunction of the heart valves, whether congenital or acquired, can impair left ventricle function.