Heart Failure

Heart failure occurs when disease, injury, or years of wear and tear interfere with the heart's ability to pump as effectively and efficiently as it should. When that happens, a cascade of physiological changes is set in motion. The end result is that many body parts don't get the blood flow that they need.

Although the term "heart failure" conjures up the catastrophe of a suddenly lifeless heart, the condition is better described as a gradual decline in the heart's ability to pump.

Think if it this way: Imagine your heart as the central warehouse of a nationwide delivery system. The trucking fleet is your blood, ferrying vital supplies (oxygen and nutrients) to all corners of your body and picking up waste. Your arteries and veins are superhighways and secondary roads connecting cities and towns (cells and tissues) along the way. When the system is operating at prime efficiency, a steady stream of cargo-laden vehicles leaves the central hub at a rapid clip every day. Once their freight is delivered, they pick up the next load and return to the central warehouse.

If the warehouse falters, freight-filled trucks jam the cargo bays. Others are stranded in remote locations, unable to make deliveries or pick-ups. Customers along the routes struggle to survive without fresh supplies.

Once a slow but sure death sentence, heart failure for many people is now a chronic condition that can be coped with thanks to advances in medications, the development of heart-assisting devices, and the possibility of heart transplants.

Heart Failure Articles

Digoxin: Old friend or old foe?

Digoxin is among the oldest cardiac drugs still in use, but its history has been marked by controversy. The higher doses needed to achieve the desired therapeutic effect could escalate to toxicity and cause sudden death. However, better understanding of how the drug works has led to a potential new role for digoxin in improving quality of life and reducing hospital stays for people with advanced heart failure. (Locked) More »

From hot dogs to heart failure

Men who eat processed red meats such as sausages and cold cuts may raise their risk of heart failure. These foods may be especially detrimental because of their high levels of sodium, nitrates, and other additives.  (Locked) More »

Heart failure with 'preserved ejection fraction': What does it mean?

Shortness of breath, lung congestion, and swelling in the lower body are the telltale signs of a weakened heart. Insights into the structural and biochemical abnormalities that progressively impair heart function lend new complexity to the diagnosis and treatment of heart failure when ejection fraction appears normal.  (Locked) More »

Heart failure caused by an infection

Unlike heart muscle weakness brought on by years of stress to the cardiovascular system, viral cardiomyopathy is a chance disease that develops from a routine viral illness. For unknown reasons, the virus lodges in the cardiac muscle and causes inflammation of the heart. (Locked) More »

5 Action Steps for Early Heart Failure

Heart failure may start with injury from a heart attack, develop as a result of damaged valves, or be brought on by underlying disease. Many times, it is the product of years of toil against high blood pressure and clogged arteries. Regardless of what sets the process in motion, recognizing the problem early and taking appropriate action can help you live longer and better.  (Locked) More »

New options to reboot the heart

Irregular heart rhythms are a common and dangerous problem for people at risk for sudden cardiac arrest. For several decades, miniature electronic devices called implantable cardioverter-defibrillators (ICDs) that detect and correct potentially deadly fast, irregular beats in the heart’s lower chambers have been a lifesaver for people prone to these episodes. Two recent advances in ICD technology are making these devices even safer and more effective to a wider range of people. (Locked) More »

Fluid retention: What it can mean for your heart

Excess fluid in the body can take a variety of forms, from belly boating and swollen ankles to nausea, persistent coughing, and fatigue. Even before outward signs are evident, fluid retention can signal a worsening of heart failure. Checking weight daily is the best method to detect early changes in the body’s fluid balance. An increase of 2 or more pounds in a day should be a signal to lower sodium intake, check fluid intake, and call a doctor for medication advice. Doing so can help prevent serious heart failure complications. (Locked) More »

Obese teens' hearts in trouble

Using a newly developed cardiac MRI technique, Harvard researchers found that obese teens' hearts already are undergoing changes that if left untreated will lead to irreversible heart damage and ultimate heart failure. (Locked) More »