bradycardia

bradycardia:

see arrhythmiaarrhythmia
, disturbance in the rate or rhythm of the heartbeat. Various arrhythmias can be symptoms of serious heart disorders; however, they are usually of no medical significance except in the presence of additional symptoms.
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Bradycardia

decrease in frequency of heart contractions to less than 60 beats per minute.

Bradycardia may be found as a normal, constitutionally conditioned phenomenon in perfectly healthy persons, in well-trained athletes, and as one of the symptoms in many diseases. More often, bradycardia is observed as a result of organic disturbances of auriculoventricular conductivity—heart blockage, myocardial infarction, and inflammatory (infectious or toxic) diseases of the heart muscle. Complete blockage of the heart with a pulse frequency of 30–40 beats per minute or less threatens brain complications: loss of consciousness, convulsions, and cessation of heart activity. Prophylaxis and treatment are directed toward removal of the cause.

bradycardia

[¦brād·i¦kärd·ē·ə] (medicine) Slow heart rate.

bradycardia

[brad″e-kahr´de-ah] slowness of the heartbeat, so that the pulse rate is less than 60 per minute. This can occur in normal persons, particularly during sleep; trained athletes also usually have slow pulse and heart rates. adj., adj bradycar´diac.fetal bradycardia a fetal heart rate of less than 120 beats per minute, generally associated with hypoxia; it is usually due to insufficiency" >placental insufficiency; it may also result from transfer of local anesthetics or beta-adrenergic blocking agents, and rarely to heart block associated with congenital heart disease or maternal collagen vascular disease.nodal bradycardia bradycardia in which the stimulus of the heart's contraction arises in the atrioventricular node or common bundle.sinoatrial bradycardia (sinus bradycardia) a slow sinus rhythm, with a heart rate of less than 60 beats per minute in an adult; it is common in young adults and in athletes but is also a manifestation of some disorders.bradycardia-tachycardia syndrome any cardiac dysrhythmia characterized by alternating slow and fast heart rates, often resulting in hemodynamic compromise. See also sick sinus syndrome.

bra·dy·car·di·a

(brad'ē-kar'dē-ă), Slowness of the heartbeat, usually defined (by convention) as a rate under 50 beats/minute. Synonym(s): brachycardia, bradyrhythmia [brady- + G. kardia, heart]

bradycardia

(brăd′ĭ-kär′dē-ə)n. Slowness of the heart rate, usually fewer than 60 beats per minute in an adult human.

brad′y·car′dic (-dĭk) adj.

bradycardia

Slow heart rate, commonly defined as a rate of < 60 bpm or a rate which is too slow to be physiologically appropriate for the person and/or activity (generally recognised as < 45 beats/minute in men, < 50 beats/minute in women). A notable exception is aerobic athletes, whose resting heart rates are significantly lower than those of non-athletes.

Clinical findings
Symptoms may be specific (syncope) or nonspecific (dizziness, fatigue, weakness, heart failure).

Management
Beta blockers (pindolol), pacemaker.

bradycardia

Cardiology Slow heart rate; commonly defined as a rate < 60 bpm or a rate that is too slow to be physiologically appropriate for the person and/or activity; alternatively< 45 beats/min in ♂; <50 beats/min in ♀Clinical Sx may be specific–syncope, or nonspecific–dizziness, fatigue, weakness, heart failure Management Beta blockers–pindolol, pacemaker. See Cardiac output.

bra·dy·car·di·a

(brad'ē-kahr'dē-ă) Slowness of the heartbeat, usually a rate less than 60 beats per minute.
Synonym(s): brachycardia. [brady- + G. kardia, heart]

bradycardia

A slow heart rate. In the healthy this often indicates a high degree of fitness, but bradycardia can be a sign of heart disease, such as heart block, an effects of digitalis or beta-blocker overdosage or the result of thyroid underaction (MYXOEDEMA).

bradycardia

an abnormal reduction in heart rate.

Bradycardia

A slow heart rate. Bradycardia is one of the two types of arrhythmiaMentioned in: Arrhythmias, Electrophysiology Study of the Heart, Heart Block, Sick Sinus Syndrome

bra·dy·car·di·a

(brad'ē-kahr'dē-ă) Slowness of the heartbeat, usually under 50 beats/minute. [brady- + G. kardia, heart]

Patient discussion about bradycardia

Q. What is considered a slow heartbeat? I am a 30 year old woman and I went for a routine checkup at my Doctor's. He checked my pulse and it was 52 beats per minute. Is this considered slow? All my family members have a faster beat of 65- 90 beats per minute. If it is slow, is it bad?A. If the heartbeat is too slow, usually considered a rate below 60 beats a minute, not enough oxygen-rich blood flows through the body. The symptoms of a slow heartbeat are:
Fatigue
Dizziness
Lightheadedness
Fainting or near fainting
However, some people with slow heartbeat don't have any symptoms at all. Regular exercise can also result in a slow heartbeat. This happens because the exercise has actually strengthened the heart to the point where it can beat less often and still perform its job effectively. I am not a doctor, but it seems to me that in this case the slow heartbeat is not a cause for concern. If it troubles you, consult your doctor and see what he/she thinks about it.

Q. SVT and AF, Hearts that go fast to slow or any others probs with the beats of any kind and Ablation of hearts I have had Ablation done once and I am still having passing out spells and still on 50mg toprol 2 times a day till two days ago, now I am on 150 to 200 aday again. Its not the first time I have had to up meds. I had ablation down 4/22/05. I can breath better now but but it didnt take it away as you can tell. Now Dr Leonardie would like to do it again . This is the big ????! Will it or can it work 100% this time, or will it hit and miss some again???? MTTA. Well I can understand the frustration of having to go through this procedure yet another time. There are no guarantees in medicine. You should follow your doctor's advice, as another proceudre might be more helpful than the last one. However you should keep in mind that nothing is for sure.

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Words related to bradycardia

noun abnormally slow heartbeat

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