All About Our Heart

by Naveen Kumar Sanagala

Our Heart :
The heart is a hollow, muscular organ that pumps blood, rich with oxygen and nutrients to all parts of the body. It is the organ which functions incessantly round the clock. Heart lies in the center of the chest, slightly to the left and protected by the breast bone (sternum). The heart is made up of a powerful muscle called Myocardium. The heart has two separate pumps that continuously send blood through out the body carrying nutrients, oxygen and helping remove harmful wastes. A wall (septum) divides the heart into a right side and left side. The right side heart receives impure blood low in oxygen. The left side heart receives pure blood that has oxygenated by the lungs. This cycle is repeated about 70 times per minute and is counted as a pulse. The heart is divided into four chambers. Two upper chambers (atria) receive blood from the veins. Two lower chambers (ventricles) pump blood out of the heart through arteries. The heart has four valves that keep the blood flowing in the correct direction i.e., work as regulators. The heart muscle is nourished by a system of arteries, which originate from the 'aorta': the right and left coronary arteries.
Heart Functions: The heart functions as interrelated double pumps. One pump (right heart) receives blood, which has just come from the body after delivering nutrients and oxygen to the body tissues. It pumps this dark, bluish red blood to the lungs where the blood gets rid of a waste gas (carbon dioxide) and picks up a fresh supply of oxygen which turns it a bright red again. The second pump (left heart) receives this "reconditioned" blood from the lungs and pumps it out through the great trunk -artery (aorta) to be distributed by smaller arteries to all parts of the body. Types of Heart disorders : There are three main diseases of the heart.

1. Coronary artery disease (King's Disease): Coronary arteries become narrow or blocked due to the deposition of Cholesterol and other body fats leading to 'artherosclerosis', commonly called 'hardening of the arteries'. Artherosclerosis causes insufficient blood flow to the heart muscles. Angioplasty, intensive medication, life style changes, and in severe cases, a by-pass surgery is recommended to correct the defect.
2. Valvular heart disease: It is a defect in the valves by birth, infection causing scarring or thickening leading to insufficient opening or closure of valves for blood flow. This disorder can be cured either by medication or by artificial valvular surgery.
3. Congenital heart disease: Congenital heart defects are problems with the heart's structure that are present at birth. These defects can involve the interior walls of the heart, valves inside the heart, or the arteries and veins that carry blood to the heart or out to the body. Congenital heart defects change the normal flow of blood through the heart. There are many different types of congenital heart defects. They range from simple defects with no symptoms to complex defects with severe, life-threatening symptoms. Congenital heart defects are the most common type of birth defect, affecting 8 of every 1,000 newborns. Most of these defects are simple conditions that are easily fixed or need no treatment. A small number of babies are born with complex congenital heart defects that need special medical attention soon after birth. Over the past few decades, the diagnosis and treatment of these complex defects has greatly improved. As a result, almost all children with complex heart defects grow to adulthood and can live active, productive lives because their heart defects have been effectively treated. Most people with complex heart defects continue to need special heart care throughout their lives. They may need to pay special attention to certain issues that their condition could affect, such as health insurance, employment, pregnancy and contraception, and preventing infection during routine health procedures.

How To Test For Heart Failure

by Mike Selvon

Each year, 5 million Americans will suffer from heart failure, a condition in which the heart can't pump blood to other organs in the body. The root cause is not simply a matter of "blocked pipes" or genetics.

Culprits behind this include narrowed arteries, scar tissue, high blood pressure, heart valve disease, cardiomyopathy (disease of the heart muscle itself), congenital heart defects, infection of the valves (endocarditis), infection of the heart (myocarditis), or a combination of factors.

Coronary Artery Disease is the leading cause of heart failure today. CAD is a manifestation of atherosclerosis, which results from smoking, high cholesterol, hypertension (high blood pressure) and diabetes.

Sometimes a viral infection, exposure to toxins like lead or alcohol, or genetics can cause a disease in the actual heart muscle, also known as cardiomyopathy. Diabetes, high salt intake, sustained rapid heart rhythms, alcoholism and marked obesity can all be contributors to chronic failure of the heart.

To check if you may have heart health problems, your general practitioner can run several tests to be sure. Many people avoid getting tested in advance because they fear invasive pokes and prods, but most of these screening tests are very non-invasive. For instance, one test, which is a "stress test," has you walking on a treadmill for a specific interval of time through several intensity levels, while an IV-injected tracer moves through the blood, indicating possible obstructions or strain.

Another test, the EKG, simply monitors your heart rhythms through electrical wires with adhesive ends stuck to your chest, arms and legs. An "Echocardiogram" is simply an ultrasound image taken of your chest, which is as painless as a photograph.

Most people are familiar with the usual hypertension/blood pressure test done with a cuff around your bicep. The most invasive test, which is recommended for people with a genetic predisposition, is the "Catheriterization," which is a small tube inserted into the artery, which may open an obstruction or insert dye to see where the problem spots are.

If you've been diagnosed with heart failure, then you'll need to adjust your diet considerably. An overwhelming amount of evidence suggests the importance of Omega-3 fatty acids, which are found in fish oil supplements. Dr. James O'Keefe of the Mid America Heart Institute in Kansas recommends at least 1 gram of fish oil per day and as much as 4 grams for people with high triglyceride levels.

"Research shows that this dosage lowers triglyceride levels by 20 to 50 percent," he explains. In addition, you'll be trading in eggs for oatmeal, red meat for fish and hummus instead of chip dip.