Definitions Flashcards
Define hyper lipidemia
Blood disorder characterized by elevations in blood cholesterol levels
What is a major risk factor for coronary heart disease?
Hyper lipidemia
What are the causes of hyper lipidemia?
Genetic, which is primary.
Environmental factors which is secondary.
95% of people have both
Define primary hyper lipidemia
Genetic predisposed
May inherit defective jeans
abnormalities in LDL receptors/mutations in apolipoproteins lead to increase cholesterol production or decrease clearance of it
What are secondary causes of hyperlipidemia (what diseases)
Acute hepatitis, diabetes, hypothyroidism, nephrotic syndrome, primary biliary, cirrhosis, systemic, lupus erythematosus, uremia.
What are secondary causes of hyper lipidemia? (drugs)
Alcohol, beta blockers, glucocorticoids, oral, contraceptives, progestines thiazide diuretics
Define cholesterol
A natural substance produced during sleep by the liver 70% diet 30%
What does cholesterol Help with?
Makes bi asses digestion,
steroid, hormones cholesterol is the precursor of five major classes of steroid hormones
maintains integrity of cell membranes
Found mainly in cells, but 7% circulates in the blood serum
What are the five major classes of steroid hormones?
Glucocorticoids, mineralocorticoids, androgens and estrogens progestagens
Serum cholesterol =
Atherosclerosis
What are the major plasma lipids?
Cholesterol triglycerides phospholipids
Define Lipo proteins
Surround the phospholipids and transport in the blood are produced in the liver and intestines, but endogenous production of Lipo proteins occurs, primarily liver
Apolipoproteins
Specialized proteins on the surface of the lipoprotein.
Identify specific receptors, which lipoprotein will bind
They play a role in development or prevention of hyper lipidemia by controlling interaction in metabolism of Lipo proteins
What are four major Lipo proteins
Chylomicrons, very low density lipoprotein, low density lipoprotein’s, high density lipoprotein
What are chylomicrons
Largest composed, primarily of triglycerides from consumption of fat
What are very low density lipoprotein?
Compose of cholesterol and triglycerides the major carrier of endogenous triglycerides converts to LDL
Low density lipoprotein
Bad cholesterol contains the most cholesterol by way of all the Lipo proteins contain 60 to 75% of total cholesterol
What are high density lipoprotein?
Good cholesterol functions to remove LDL and TG
What is atherosclerosis?
Lesions resulting from accumulation of cholesterol and blood vessels.
It affects large arteries and coronary arteries
How does atherosclerosis develop?
LDL accumulates in the endothelial lining of the intima,
monocytes invade and form macrophages, ingest the LDL and leaves fatty streaks to lesions
Begins in mid teens and lesions grow as people age
Plaque cells grow causing damage to the endothelium this, Lisa platelet aggregation and clot formation
What diseases does atherosclerosis cause?
Coronary heart disease (myocardial infarction significant myocardial, ischemia history of coronary artery bypass graft history of coronary angioplasty angiographic evidence of lesions)
Peripheral vascular disease (claudication)
Carotid, artery disease (Thrombotic stroke transient, ischemic attack)
What are risk factors for hyper lipidemia?
Age, gender systolic blood pressure, antihypertensive therapy, use presence of diabetes and smoking
When should people assess their risk of hyper lipidemia?
Assessment of traditional risk factors in patients age 20 to 39 years without a history of cardiovascular disease every 4-6 years
A full lipid panel, which also contains LDL cholesterol and triglyceride, should be attained fully evaluate a patient’s risk
Patience with a 10 year ASCVD risk greater than or equal to 7.5%.
Are considered a elevated risk for a future ASCVD event