Serum Cholesterol Presented By Assist.Lecturer Aseel Ghassan Daoud

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Presentation transcript:

Serum Cholesterol Presented By Assist.Lecturer Aseel Ghassan Daoud M.Sc. In pharmacy/ Clinical laboratory sciences

What are the roles of cholesterol in the body? What is cholesterol? Cholesterol is a steroid that is essential for life. What are the roles of cholesterol in the body? It forms the membranes for cells in all organs and tissues in the body. It makes hormones that are essential for development, growth and reproduction.

It forms bile acids needed to absorb nutrients from food. It is used for synthesis of fat soluble vitamins ex: A, E, D, K Small amounts of cholesterol circulates in blood in particles called lipoproteins which transfer excess cholesterol away for disposal (HDL-C) and some of it deposit cholesterol in tissues and organs (LDL-C).

What is serum cholesterol test? This test measures total cholesterol (good and bad) that is carried in the blood by lipoproteins.

When is blood cholesterol raised? Inherited predisposition for high cholesterol levels. Eat too much of foods high in cholesterol (saturated and trans unsaturated fats).

What are the consequences of high blood cholesterol? Extra cholesterol may be deposited in plaques on the walls of blood vessels, these plaques can narrow or block the blood vessels opening leading to atherosclerosis and increasing risk for heart disease and stroke.

When is cholesterol test recommended? It is recommended for all adults at least once every five years, it is usually ordered with HDL-C, LDL-C and triglycerides often called a lipid profile

In patients it is tested several times per year In children and youths with increased risk of developing heart disease

What are risk factors for heart disease? Smoking Age Hypertension Family history of heart disease Pre-existing heart disease having had heart attack Diabetes mellitus

What are risk factors for heart disease in children and youths? Family history Being over-weight or obese Eat too much cholesterol (saturated and trans unsaturated fats) Diabetes mellitus High blood pressure Smoking

What does the test result mean? Desirable: cholesterol below 200 mg/dl low risk Borderline high: cholesterol 200-239 mg/dl moderate risk High risk: cholesterol ≥ 240 mg/dl high risk