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Heart failure, also called congestive heart failure, is a condition in which the heart cannot pump enough oxygenated blood to meet the needs of the body's other organs. The heart keeps pumping, but not as efficiently as a healthy heart. Usually, the heart's diminished capacity to pump reflects a progressive, underlying condition.
Heart failure may result from any or all of the following:
Heart valve disease caused by past rheumatic fever or other infections
High blood pressure (hypertension)
Active infections of the heart valves and/or heart muscle (for example, endocarditis or myocarditis)
Previous heart attack(s) (myocardial infarction). Scar tissue from prior damage may interfere with the heart muscle's ability to pump normally.
Coronary artery disease. Narrowing of the arteries that supply blood to the heart muscle.
Cardiomyopathy or another primary disease of the heart muscle
Congenital heart disease or defects (present at birth)
Cardiac arrhythmias (irregular heartbeats)
Chronic lung disease and pulmonary embolism
Excessive sodium (salt) intake
Anemia and excessive blood loss
Complications of diabetes
Heart failure interferes with the kidney's normal function of eliminating excess sodium and waste products from the body. In congestive heart failure, the body retains more fluid, resulting in swelling of the ankles and legs. Fluid also collects in the lungs, which can cause profound shortness of breath.
The following are the most common symptoms of heart failure. However, each individual may experience symptoms differently. Symptoms may include:
Shortness of breath during rest, exercise, or while lying flat
Visible swelling of the legs and ankles (due to a buildup of fluid), and, occasionally, swelling of the abdomen
Fatigue and weakness
Loss of appetite, nausea, and abdominal pain
Persistent cough that can cause blood-tinged sputum
The severity of the condition and symptoms depends on how much of the heart's pumping capacity has been compromised.
The symptoms of heart failure may resemble other conditions or medical problems. Always consult your health care provider for a diagnosis.
In addition to a complete medical history and physical examination, diagnostic procedures for heart failure may include any, or a combination of, the following:
Chest X-ray. A diagnostic test that uses invisible electromagnetic energy beams to produce images of internal tissues, bones, and organs onto film.
Echocardiogram (also called echo). A noninvasive test that uses sound waves to evaluate the motion of the heart's chambers and valves. The echo sound waves create an image on the monitor as an ultrasound transducer is passed over the heart.
Electrocardiogram (ECG or EKG). A test that records the electrical activity of the heart, shows abnormal rhythms (arrhythmias or dysrhythmias), and can sometimes detect heart muscle damage.
BNP testing. B-type natriuretic peptide (BNP) is a hormone released from the ventricles in response to increased wall tension (stress) that occurs with heart failure. BNP levels rise as wall stress increases. BNP levels are useful in the rapid evaluation of heart failure. In general, the higher the BNP levels, the worse the heart failure.
Specific treatment for heart failure will be determined by your health care provider based on:
Your age, overall health, and medical history
Extent of the disease
Your tolerance for specific medications, procedures, or therapies
Expectations for the course of the disease
Your opinion or preference
The cause of the heart failure will dictate the treatment protocol established. If the heart failure is caused by a valve disorder, then surgery may be performed. If the heart failure is caused by a disease, such as anemia, then the underlying disease will be treated. Although there is no cure for heart failure due to damaged heart muscle, many forms of treatment have been used to treat symptoms very effectively.
The goal of treatment is to improve a person's quality of life by making the appropriate lifestyle changes and implementing drug therapy.
Treatment of heart failure may include:
Controlling risk factors:
Losing weight (if overweight) and increasing moderate exercise
Restrict salt and fat from the diet
Controlling blood sugar if diabetic
Controlling blood pressure
Medication, such as:
Angiotensin converting enzyme (ACE) inhibitors. This medication decreases the pressure inside the blood vessels and reduces the resistance against which the heart pumps.
Angiotensin receptor blockers (ARB). This is alternative medication for reducing workload on the heart if ACE inhibitors are not tolerated.
Diuretics. These reduce the amount of fluid in the body.
Vasodilators. These dilate the blood vessels and reduce workload on the heart.
Digitalis. This medication helps the heart beat stronger with a more regular rhythm.
Antiarrhythmia medications. These help maintain normal heart rhythm and help prevent sudden cardiac death.
Beta-blockers. These reduce the heart's tendency to beat faster and reduce workload by blocking specific receptors on heart cells.
Aldosterone blockers. Medication that blocks the effects of the hormone aldosterone which causes sodium and water retention.
Biventricular pacing/cardiac resynchronization therapy. A new type of pacemaker that paces both pumping chambers of the heart simultaneously to coordinate contractions and to improve the heart's function. Some heart failure patients are candidates for this therapy.
Implantable cardioverter defibrillator. A device similar to a pacemaker that senses when the heart is beating too fast and delivers an electrical shock to convert the fast rhythm to a normal rhythm.
Ventricular assist devices (VADs). These are mechanical devices used to take over the pumping function for one or both of the heart's ventricles, or pumping chambers. A VAD may be necessary when heart failure progresses to the point that medications and other treatments are no longer effective.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.