| atrial fibrillation |
A condition where disorganized electrical conduction in the atrial walls results in ineffective pumping of blood into the ventricle and an irregular heart rhythm. Read more: Causes, symptoms, diagnosis, treatment.
출처: www.firelands.com/heart/glossary.asp
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| atrial flutter |
A rapid well-organized contraction of the atrium at a rate of 250-350 contractions per minute. Ventricular beats are usually some multiple of 300. ECG shows saw tooth waves. Atrial flutter is considered a serious and potentially unstable rhythm.
출처: www.firelands.com/heart/glossary.asp
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| atrial septal defect |
An inherited condition where there is no closure of the foramen ovale at birth, resulting in congenital heart disease. Usually asymptomatic until the third or fourth decades of life.
출처: www.firelands.com/heart/glossary.asp
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| atrioventricular block |
A conduction disturbance that consists of a delay (or complete inability) of a electrical impulse, generated in the atria, to reach the ventricles. Clinical types are divided into first (no serious), second and third degree (most serious). Some drugs may precipitate atrioventricular block (for example clonidine, methyldopa, verapamil). A permanent pacemaker may be required for a third degree (complete) heart block.
출처: www.firelands.com/heart/glossary.asp
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| atrial septal defect |
Hole in the heart...a residual communication between the two upper heart chambers. In most hearts, the flow is from the red side towards the blue (or right) side of the heart. This causes overload of the right heart, but is usually well tolerated. There are several varieties of ASDs depending on the location and associated abnormalities. Repair is by direct suture closure or patch closure.
출처: www.cardioassoc.com/patient_pgs/glossary.asp
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