A second-degree heart block may cause the heart to skip a beat or beats, explains the National Heart, Lung and Blood Institute. It also makes a patient feel dizzy or faint. More »

www.reference.com Health Conditions & Diseases Cardiac Health

An irregular heart beat is associated with health issues such as heart disease, an imbalance of electrolytes in the blood, changes in the heart muscle or an injury caused by a heart attack. However, there are many caused... More »

www.reference.com Health Conditions & Diseases Cardiac Health

Symptoms of heart blockage include fainting, light-headedness, fatigue and chest pain, according to the National Heart, Lung, and Blood Institute. First-degree heart block may not cause symptoms and is common in highly t... More »

There are four main types of irregular heartbeats, also known as arrhythmia, including premature or extra beats, supraventricular arrhythmias, ventricular arrhythmias and bradyarrhythmias, according to the National Heart... More »

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The most apparent signs and symptoms of a carotid artery blockage include a transient ischemic attack, bruit and a stroke, according to the National Heart, Lung, and Blood Institute. Other symptoms may be weakness, numbn... More »

People with genetic defects, such as Down syndrome, often have holes in their hearts or other congenital heart defects, says the National Heart, Lung and Blood Institute. Smoking during pregnancy increases the risk of an... More »

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Pacemakers not only regulate heart rate, but also record the heart's electrical activity and rate, according to the National Heart, Lung and Blood Institute. After a pacemaker is surgically inserted, it must be programme... More »

www.reference.com Health Conditions & Diseases Cardiac Health