Abnormal heart rhythms that can cause the heart to pump less effectively. Also called dysrhythmias.
An abnormal or irregular rhythm, usually in reference to the heart.
Irregularities in the force or rhythm of heart action caused by disturbances in the discharge of cardiac impulses from the heart’s sinoatrial node or their transmission through the heart’s conductile tissue.
Variation or loss of normal rhythm of the heartbeat.
A complication of myocardial infarction resulting from irregular transmission of electrical impulses to the cardiac muscle.
Condition resulting from abnormal cardiac impulse initiation and/or conduction causing the heart to pump irregularly.
Abnormal heartbeat rhythm, caused by drugs, disease, the body’s physiology, or a combination of factors.
Any deviation from the normal rhythm (sinus rhythm) of the heart. The natural pacemaker of the heart (the sinoatrial node), which lies in the wall of the right atrium, controls the rate and rhythm of the whole heart under the influence of the autonomic nervous system. It generates electrical impulses that spread to the atria and ventricles, via specialized conducting tissues, and cause them to contract normally. Arrhythmias result from a disturbance of the generation or conduction of these impulses and may be intermittent or continuous. They include ‘ectopic beats (extrasystoles), ectopic tachycardias, ‘fibrillation, and ‘heart block (which is often associated with slow heart rates). Symptoms include palpitations, breathlessness, and chest pain. In the more serious arrhythmias Stokes-Adams syndrome or cardiac arrest may occur. Arrhythmias may result from most heart diseases but they also occur without apparent cause.
Arrhythmia means any variation from the normal regular rhythm of the heartbeat. The condition is produced by some affection interfering with the mechanism which controls the beating of the heart, and includes the following disorders: sinus arrhythmia; atrial fibrillation; atrial flutter; heart block; extrasystoles; pulsus alternans and paroxysmal atrial tachycardia; ventricular tachycardia; and ventricular fibrillation.
Irregularity or loss of rhythm, especially of the heart.
Any deviation from the typical heartbeat rhythm, which can include irregularities in the heart rate, consistency, the point of impulse origination, or the order in which the heart activates. This variation encompasses a range of cardiac conditions where the heart beats too fast, too slow, or irregularly. Such abnormalities are significant as they can affect the efficiency of the heart’s function and overall cardiovascular health. Understanding and managing these variations are crucial for maintaining heart health and preventing potential complications.