Heart disease, rheumatic
Heart damage caused by rheumatic fever. Treatment is by preventing reinfection with strep and by treating with heart drugs as needed.
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- Heart murmur
An unusual, ‘whooshing’ heart sound that may be innocent or may reflect disease or malformation. A heart murmur is created by blood flow through a heart valve, by blood flow through a narrowed chamber, or by an unusual connection between the chambers, as seen with congenital heart disease. Sometimes a heart murmur does not represent […]
- Heart muscle
A type of muscle with unique features only found in the heart. The heart muscle, or cardiac muscle, is medically called the myocardium (“myo-” being the prefix denoting muscle).
- Heart rate
The number of heartbeats per unit of time, usually per minute. The heart rate is based on the number of contractions of the ventricles (the lower chambers of the heart). The heart rate may be too fast (tachycardia) or too slow (bradycardia). The pulse is a bulge of an artery from waves of blood that […]
- Heart rhythm disorders
Abnormal rhythm of the heartbeat due to irregularities in transmission of the electrical signals that normally control heart rate and rhythm. Also known as arrhythmias. With an arrhythmia, the heartbeats may be irregular or too slow (bradycardia), too rapid (tachycardia), or occur too early. When a single heartbeat occurs earlier than normal, it is called […]
- Heart septum
The dividing wall between the right and left sides of the heart. That portion of the septum that separates the right and left atria of the heart is termed the atrial, or interatrial, septum, whereas the portion of the septum that lies between the right and left ventricles of the heart is called the ventricular, […]