Hyperlipidemia (Hypercholesterolemia)


What is Hyperlipidemia?
  1. Hyperlipidaemia means an increase in the levels of lipids (fats) in the blood, including cholesterol and triglycerides.
  2. Cholesterol is normally needed to continue building healthy cells and manufacture of several hormones in your body.
  3. Hyperlipidaemia usually doesn’t give symptoms but there is a significant increase in the deposition of cholesterol in your blood vessels including; your heart (Narrowing/blockages in heart arteries), Brain (Stroke), and limbs (Narrowing/blockages in arteries if legs).
Why people get Hyperlipidemia?
  1. The most common cause is familial (inherited in the family), but other factor s may play important role.
  2. Hyperlipidaemia develops as a result of abnormal lipoprotein metabolism (Fat related chemical reactions in the body).
  3. The various components of cholesterol Transport system in the blood are effected which cause increase in blood cholesterol or triglycerides: these includes:
    1. High blood cholesterol levels (hypercholesterolemia): Subtypes includes:
      1. Increase LDL cholesterol ( Bad Cholesterol)
      2. Increase or decrease in HDL ( Good cholesterol)
    2. High blood levels of triglycerides (hypertriglyceridemia)
Risks/causes of Hyperlipidemia

There are various risk factors, which can lead to the development of hyperlipidaemia. Several factors play important role including:

  1. Unhealthy food, a diet high in saturated fat and cholesterol increases blood cholesterol and triglyceride levels.
  2. Medical disorders including:
    1. Diabetes Mellitus
    2. Kidney Disease
    3. Hypothyroidism
  3. Certain drugs/medications, such as estrogen, corticosteroids, retinoids, protease inhibitors, thiazide diuretics, and beta-blockers, may cause hypertriglyceridemia.
  4. Obesity
  5. Chronic, excessive alcohol use.
  6. Smoking
  7. Lack of exercise
How to diagnosis Hyperlipidemia?

The signs and symptoms of arrhythmias are:

  1. High cholesterol has no symptoms
  2. Some patient may develop small bumps on the skin at various parts of body including:
    1. Xanthelasma: yellowish patches underneath the skin around the eyelids
    2. Xanthomata: yellowish patches at the fingers (tendons) elbows, knees

Tests to diagnose Hyperlipidemia

  1. Blood test: Ideally, after 9-12 hours without any food, blood should be checked for cholesterol levels (also called a lipid panel or lipid profile):
    1. Total cholesterol
    2. LDL cholesterol
    3. HDL cholesterol
    4. Triglycerides — a type of fat in the blood
Interpretation of High Cholesterol:
Interpretation of cholesterol levels
Cholesterol type mg/dL mmol/L Interpretation
Total cholesterol < 200 < 5.2 Ideal level
200-239 5.2-6.2 Borderline High
> 240 > 6.2 Very High
LDL cholesterol
(Bad Cholesterol)
< 1000 < 2.6 Ideal level
100-129 2.6-3.3 good
130-189 3.4-4.9 High
> 190 > 4.9 Very High
HDL cholesterol
(Good Cholesterol)
< 40 < 1.0 Undesirable, Increase risks
41 - 59 1.0 - 1.5 Normal
> 60 > 1.55 Very good
Triglycerides (TG) < 500 < 1.7 Ideal level
150 to 499 1.7 tp 5.6 Mild High
500 to 886 5.6 to 10.0 Moderate High
> 886 ≥ 10.0 Very High
Treatment of Hyperlipidemia:
  1. Treating high cholesterol and triglycerides is very important as significantly increase risk of coronary artery disease, brain stroke and peripheral vascular disease.
  2. Lifestyle changes plays an important role in the management.
  3. Your physician will decided, the specific choice of medication or combination of medications depends on various factors, including your individual risk factors, your age, your current health and possible side effects.
Medications

  1. Statins
    1. Statins is the most commonly used medications for high cholesterol and high triglycerides
    2. Statins causes your liver to remove cholesterol from your blood and also help reabsorb cholesterol from built-up deposits on your artery walls, and may potentially reversing coronary artery disease ( deposition of cholesterol in heart arteries)
    3. The various examples include; atorvastatin (Lipitor), fluvastatin (Lescol), pitavastatin (Livalo), pravastatin (Pravachol), rosuvastatin (Crestor) and simvastatin (Zocor).

  2. Cholesterol absorption inhibitors
    1. This drug reduces the absorption of dietary cholesterol from your gut.
    2. This drug is usually used in combination with STATINS.
    3. Example include: ezetimibe (Zetia)

  3. Bile-acid-binding resins
    1. These drugs lower cholesterol indirectly by interacting with bile acids (produced by your liver) and therefore reduces the level of cholesterol in your blood.
    2. These drugs includes: cholestyramine (Prevalite), colesevelam (Welchol) and colestipol (Colestid)

  4. Injectable Medications
    1. These are new class of medications, which can help the liver absorb more LDL cholesterol and therefore, lowers the amount of cholesterol in your blood.
    2. Can be used for people who have a genetic condition, causing high cholesterol.
    3. Can be used for patients who cannot tolerate statins or other cholesterol medications because of side effects.
    4. Examples include: Alirocumab (Praluent) and evolocumab (Repatha)

If you also have high triglycerides, your doctor may prescribe:

  1. Fibrates
    1. These reducing your liver's production of very-low-density lipoprotein (VLDL) cholesterol and increase removal of triglycerides from your blood
    2. The medications includes: fenofibrate (TriCor, Fenoglide, others) and gemfibrozil (Lopid)
  2. Omega-3 fatty acid supplements
    1. Omega-3 fatty acid supplements can help lower your triglycerides.

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