Cardio Activity and Your Heart II

When someone talks of blood pressure problems, in most cases they refer to issues of high blood pressure. But low blood pressure is also a fairly common condition and it needs attention.

What are the causes of low blood pressure? It turns out there are quite a few of them.

Unearthing the causes of hypotension is important because they have to be dealt with before treating the clinical conditions of low blood pressure.

Anti-hypertensive drugs are one possible cause. If someone with high blood pressure continues to take such drugs without adequate supervision, it can result in a buildup of the drug in the body which can cause blood pressure to drop below acceptable levels.

That is why patients on beta-blockers must be monitored closely to ensure that they do not end up with adverse effects like hypotension.

Diuretic medications can cause this problem if the drugs are overused. In fact, they can lower blood pressure to dangerous levels if not taken correctly.

Cardiac problems can, of course, cause low blood pressure. Problems like tricuspid regurgitation, which is a valve-related issue, can result in the condition.

Traumas such as severe burns can lower blood pressure drastically. Burns affect the permeability of blood vessels which triggers the problem. Heat stroke is another possible cause of lowered pressure because it disrupts the fluid mechanism in the body.

Inflammation to organs like the pancreas may result in hypotension. So can respiratory problems like pneumothorax, as well as dysentery and other severe gastro intestinal problems.

Patients on nitrate medication may have a tendency to suffer from this condition. This is particularly true if they consume alcohol. For this reason, doctors usually advice against alcohol consumption when the patient takes nitrate drugs.

In reality, what constitutes low blood pressure often depends on the patient. There is a fine line between healthy low pressure and clinical hypotension.

As you can see, there are many possible causes of low blood pressure. Your health care giver’s judgment is crucial in deciding if you have hypotension and what treatment it requires.

Cholesterol, like fat, cannot move around the bloodstream on its own because it does not mix with water. The bloodstream carries cholesterol in particles called lipoproteins that are like blood-borne cargo trucks delivering cholesterol to various body tissues to be used, stored or excreted. But too much of this circulating cholesterol can injure arteries, especially the coronary ones that supply the heart. This leads to accumulation of cholesterol-laden “plaque” in vessel linings, a condition called atherosclerosis.

When blood flow to the heart is impeded, the heart muscle becomes starved for oxygen, causing chest pain (angina). If a blood clot completely obstructs a coronary artery affected by atherosclerosis, a heart attack (myocardial infarction) or death can occur.

Are you at risk? Cardiovascular disease is still one of the greatest health problem affecting western countries. According to the American Heart Foundation, over 70 million Americans have cardiovascular disease (CVD). The national cost of is nearly $400 billion and every 45 seconds an American has a stoke.

Certain risk factors increase your chances of developing cardiovascular disease.

1. Overweight
2. High blood cholesterol
3. Insufficient physical activity
4. High blood pressure
5. Smoking
6. Excessive alcohol intake
7. Diabetes

Many people have multiple risk factors for heart disease and the level of risk increases with the number of risk factors. By reducing these risk factors you can largely prevent the onset of cardiovascular disease. On its own elevated blood cholesterol is not necessarily a problem, but coupled with one or more other risk factors for heart disease, it is often the straw that breaks the camel’s back.

It is, therefore, very important to know what your cholesterol levels are and to keep them at a healthy level before you have any problems.

High risk cholesterol
If your total cholesterol level is 240 or more, it's definitely high. You have a higher risk of heart attack and stroke. In fact, you should have your LDL and HDL cholesterol tested. Ask your doctor for advice. Close to 20 percent of the U.S. population has high blood cholesterol levels.

Borderline-high risk
People whose total cholesterol is 200 to 239 mg/dL have borderline-high cholesterol. About a third of American adults are in this group, while almost half of adults have total cholesterol levels below 200 mg/dL. In fact, people who have a total cholesterol of 240 mg/dL have twice the risk of coronary heart disease as people whose cholesterol level is 200 mg/dL. Does physical activity affect cholesterol?

Other factors that affect blood cholesterol levels:

Heredity – High cholesterol often runs in families. Even though specific genetic causes have been identified in only a minority of cases, genes still play a role in influencing blood cholesterol levels. If your parents have high cholesterol, you need to be tested to see if your cholesterol levels are also elevated.

Age and gender – Before menopause, women tend to have total cholesterol levels lower than men at the same age. Cholesterol levels naturally rise as men and women age. Menopause is often associated with increases in LDL cholesterol in women.

Stress – Studies have not shown stress to be directly inked to cholesterol levels. But experts say that because people sometimes eat fatty foods to console themselves when under stress, this can cause higher blood cholesterol.

Excess weight – Being overweight tends to increase blood cholesterol levels. Losing weight has been shown to help lower levels. A greater risk of increased cholesterol levels occurs when that extra weight is centered in the abdominal region, as opposed to the legs or buttocks.

Although 73 percent of women know how to prevent heart disease, many are unaware of how to treat it once a diagnosis has been made.

In a survey of 1,979 women over age 35, only 55 percent said they understand how to treat heart disease. Respondents often incorrectly named prevention techniques such as exercise and healthy eating as treatment options, and less than 10 percent named actual treatments such as angioplasty and stent placement.

Hispanics and African-Americans, both considered high-risk groups for heart disease, were twice as likely as Caucasian women to say they did not know any treatments at all.

The survey was conducted by the "Healthy From the Heart" campaign sponsored by the National Women's Health Resource Center and Cordis Corp. The campaign encourages women to learn about treatment options for coronary artery disease, the most common type of heart disease, so they can make better decisions if diagnosed.

"The good news is that women are aware that they are at risk for heart disease. The bad news is that they are overly confident in their ability to prevent it and treat it," said Dr. Cindy Grines, an interventional cardiologist with William Beaumont Hospital in Royal Oaks, Mich. "Women must realize that education is the key to conquering the threat of coronary artery disease. There are a variety of treatment options now available."

The most common procedure for treating coronary artery disease is balloon angioplasty with a coronary stent. Angioplasty widens narrowed arteries by threading a balloon-tipped catheter through the arm or groin artery to the blocked artery in the heart. The balloon is inflated to compress the plaque against the artery walls, which in turn expands the blood vessel so blood can flow more easily.

Scientific advances have led to the development of the drug-eluting stent, a tiny mesh scaffold that props the artery open while releasing small amounts of a particular drug, such as sirolimus, inside the artery over a period of time. This helps keep plaque from reforming and helps prevent repeat blockage from occurring inside the blood vessel.

Coronary bypass surgery is another treatment option. While more invasive, it is a safe and effective treatment for patients who may not qualify for angioplasty and stent insertion.