Hold a tennis ball in your fist. Imagine it’s your heart (it’s about the same size). Now squeeze the ball hard to mimic the contractions your heart performs to pump blood through your circulatory system 60 times every minute.
Repeat 100,000 times.
That’s how often your heart expands and contracts in just one day. Blood flows into the right atrium, then into the right ventricle, which sends blood to the lungs to add oxygen and purge waste. After a trip through the left atrium and the left ventricle, blood continues through the body to the liver and kidneys, where waste products are filtered. The ba-bum or lub-dub sounds are valves opening and closing to prevent circulatory backwash.
When everything’s working correctly, the heart is one powerful machine. Unfortunately, some ailments, genetic conditions, or too many doughnuts can throw a wrench into that finely tuned engine. Here, Christopher B. Granger, M.D., a cardiologist at Duke University School of Medicine, explains the most common ways hearts break, why they do, and how you can prevent it.
Blood Clot

Blood Clot
Cause: Plaque that has built up along artery walls breaks away because of a rupture, stress, or inflammation. These pieces of plaque (clots) enter the bloodstream.
Prevention: Lower the amount of cholesterol in your diet, exercise, and don’t smoke. If you have an elevated cholesterol level, treat it with medication.
If untreated: Clots can stop blood flow, which can cause a heart attack. Even if there is no heart stoppage, clots can lead to heart disease.
Remedies: Blood thinners, such as low-dose aspirin or the drugs warfarin (sold as Coumadin) and Heparin, help prevent clots from forming.
Cutting edge: Anti-inflammatory drugs that will reduce the likelihood of clots continue to be on the horizon. Cardiologists have found that the sooner a clogged artery is opened, the better, so they’re acting as quickly as they can in emergency-room situations.
Arrhythmia
Cause: The heart beats out of its normal rhythmic pattern, resulting in a fluttering feeling in the chest. With this abnormal pumping, there is decreased blood flow to the body, causing you to feel lightheaded or even pass out.
Prevention: Some factors, such as age and genetics, are beyond your control. However, reducing exposure to cigarette smoke may help.
If untreated: Skipping a heartbeat from time to time is almost universal, but atrial fibrillation can increase your risk of stroke.
Remedies: You may be able to control arrhythmia by avoiding stimulants, such as caffeine, and eating more healthfully. However, those with more severe arrhythmia often require medications and surgery.
Cutting edge: Advances in treatment include ablation procedures, which deaden parts of the heart to allow the electrical current to flow more correctly.
Mitral Valve Prolapse
Cause: The heart’s mitral valve, which is between the left atrium and left ventricle, swells and doesn’t close properly, possibly allowing blood to flow backward. This condition is more common in younger and middle-age women. Some have no symptoms, but others may feel dizziness and fatigue or experience shortness of breath, chest pain, or an irregular heartbeat.
Prevention: Primarily a genetic condition, there’s no prevention. Your doctor may detect prolapse if she hears a clicking sound while listening to your heart through a stethoscope. That click is the valve expanding as it moves.
If untreated: For many, there is no need for treatment. Those with the condition should let their doctors know before any surgery.
Remedies: Take beta-blocking drugs, or undergo surgery to repair or replace the valve.
Cutting edge: Some heart centers are using minimally invasive procedures that involve sliding a catheter up through the leg and into the heart to insert a metal clip that closes the mitral valve.
High Blood Pressure
Cause: Obesity, diabetes, smoking, and genetic factors may contribute to an increase in blood pressure (the force exerted on your blood vessel walls as blood flows through them). Normal blood pressure is less than 120/80 mmHg.
Prevention: Don’t smoke and if you have diabetes, make every effort to keep it under control. Focus on a diet rich in fruits and vegetables while reducing your sodium intake and alcohol consumption.
If untreated: Your heart pumps against the higher level of pressure, causing it to weaken, potentially leading to a heart attack and/or stroke.
Remedies: Reduce salt intake, control weight, stop smoking, exercise most days of the week for 30 minutes, and meditate. If those measures don’t work, talk with your doctor about prescription medication.
Cutting edge: New devices that monitor blood pressure are now being developed. They activate the body’s natural responses to rising pressure.
Cardiomyopathy
Cause: The heart’s ability to send blood through the circulatory system is impaired. There are three different types—dilated, hypertrophic, and restrictive cardiomyopathy. In dilated cardiomyopathy, the heart’s left ventricle, the main pumping chamber, becomes enlarged and is less able to function. Hypertrophic cardiomyopathy occurs when the heart muscle thickens, decreasing the organ’s ability to move blood. And in restrictive cardiomyopathy, the heart muscle becomes rigid and less flexible.
Prevention: Controlling high blood pressure, diabetes, and weight may help, but unfortunately, there’s no direct way to prevent cardiomyopathy.
If untreated: Half of those who have this condition die within five years.
Remedies: Medication, an implantable defibrillator, and a special kind of pacemaker that assists the heart in contracting can help. Medications also can improve symptoms and manage excessive fluid buildup.
Cutting edge: Stem cell therapy holds promise in helping regenerate damaged heart muscle cells.
Congestive Heart Failure
Cause: The heart stops pumping because the heart muscles have been weakened by a previous attack, virus, or high blood pressure. Diabetes or alcohol consumption often aggravates the situation.
Prevention: Slim down. Weighing more than you should will contribute to your risk for congestive heart failure. Exercise for 30 minutes three times a week, making sure you get your heart rate up.
If untreated: Half the people diagnosed with congestive heart failure die within five years.
Remedies: Exercise, along with medications such as beta blockers and angiotensin-converting enzyme (ACE) inhibitors, can make a difference.
Cutting edge: Stem cell therapy eventually may lead to treatments for congestive heart failure. Studies also have been done to see whether bone marrow cells can be injected into heart muscle to reinvigorate damaged muscle.
Pericarditis
Cause: A virus, bad cold, flu, or other illness may inflame, or swell, the pericardium (the tissue that lines the heart). With temporary pericarditis, the swelling disappears on its own as the illness retreats. Chronic pericarditis may be caused by other ailments, such as rheumatoid arthritis or lupus.
Prevention: Like the common cold, this type of swelling can’t be prevented.
If untreated: Sometimes the condition gets better on its own in a week or two.
Remedies: Anti-inflammatory drugs, such as ibuprofen, can help ease the pain. If diagnosed with a bacterial infection of the heart, you may need a biopsy—a procedure in which a needle is inserted into the surrounding area—to determine the type of bacteria causing the problem. Then your doctor can prescribe an appropriate antibiotic. Sometimes steroids are used for severe attacks.
Cutting edge: In some cases, surgery may be required to remove the pericardium if it has become increasingly stiff.
Artery Spasm
Cause: A genetic condition, increased adrenal activity, or smoking can cause the blood vessels that supply blood to the heart to involuntarily contract, decreasing the blood flow. Usually spasms occur when the heart is at rest. They cause chest pain and discomfort.
Prevention: Drugs, such as calcium channel blockers, can help treat spasms.
If untreated: Spasms can cut off blood flow, cause migraine headaches, and, if severe enough, cause a heart attack.
Remedies: Nitroglycerin tablets often can make spasms disappear.
Cutting edge: Minimally invasive diagnostic tools may help doctors find spasms and diagnose the condition.
by hearthealthyonline.com