which cardiac arrhythmia is more often associated with syncope?
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There are many types of cardiac arrhythmias that may cause syncope. These include bradyarrhythmias (the heart beats too slowly) and tachyarrhythmias (the heart beats too fast). Aortic dissection, a tear in the large artery that carries blood from the heart to the rest of the body.
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Over time, untreated and frequent episodes of supraventricular tachycardia may weaken the heart and lead to heart failure, particularly if you have other coexisting medical conditions. In extreme cases, an episode of supraventricular tachycardia may cause unconsciousness or cardiac arrest.
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AIVR can occur in atrial fibrillation (see image below) and other rhythms when the rate of firing in ectopic ventricular focus surpasses that of the underlying dominant ventricular rate.
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Arrhythmia, or dysrhythmia, is an abnormal heartbeat. This happens when the heart beats irregularly, too fast, or too slow. If you have an arrhythmia, you might experience chest pain and dizziness.
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A common cause of a cardiac arrest is a life-threatening abnormal heart rhythm called ventricular fibrillation (VF). VF happens when the electrical activity of the heart becomes so chaotic that the heart stops pumping, Instead, it quivers or 'fibrillates'.
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Often, arrhythmias are harmless; however, if you feel a persistent irregular heartbeat, see a doctor.” One type of arrhythmia, a premature ventricular contraction, or PVC, is the most common type of irregular heartbeat. A PVC happens when the heart beats too early, which causes a stronger second beat.
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Paroxysmal supraventricular tachycardia is most common among young people and is more unpleasant than dangerous. It may occur during vigorous exercise. Paroxysmal supraventricular tachycardia may be triggered by a premature heartbeat that repeatedly activates the heart at a fast rate.
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Conclusion: Cough syncope patients not only exhibit more pronounced hypotension in response to cough than other fainters, but they also manifest an inappropriate cough-triggered blood pressure-heart rate relationship.
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More commonly, drugs may lead to effects on blood pressure or arrhythmias, leading to syncope. Some of the drug effects include the following: Postural hypotension. In this category are drugs such as antihypertensives, diuretics, nitrates, other arterial vasodilators, l-dopa, phenothiazines, or other tranquilizers.
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Heart rhythm problems (heart arrhythmias) occur when the electrical impulses that coordinate your heartbeats don't work properly, causing your heart to beat too fast, too slow or irregularly. Heart arrhythmias (uh-RITH-me-uhs) may feel like a fluttering or racing heart and may be harmless.
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Heart Arrhythmias: This is when a heart beats too fast, or too slow, or irregularly. Arrhythmias are caused by problems with your heart's electrical system. The electrical signals may be firing too fast or too slow, causing the arrhythmia. Like palpitations, your heart seems to skip a beat or flutter.
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​​​​​​​​​​​​​​​Heart arrhythmia, also referred to as cardiac arrhythmia, is an abnormal rhythm of the heart. Arrhythmias can occur when the electrical impulses that coordinate your heart rhythm do not travel normally. This causes the heart to beat too fast, too slow, or with an irregular rhythm.
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Flecainide-induced arrhythmias include sinus bradycardia or arrest in 2%, bundle branch blocks in 1%, increased premature ventricular depolarizations in 1%, ventricular tachycardia or fibrillation in 0.5%, and sudden death in 0.2% of patients. New ventricular arrhythmias have been reported in 3.4% of patients.
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Ventricular tachycardia that is prolonged can result in low cardiac output, low blood pressure, and fainting (syncope).
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Atrial Fibrillation and Wolff-Parkinson-White Syndrome (WPW) Atrial fibrillation is a medical emergency when rapid antegrade conduction over an accessory pathway occurs in Wolff-Parkinson-White syndrome.
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Supraventricular arrhythmias begin in the areas above the heart's lower chambers, such as the upper chambers (the atria) or the atrial conduction pathways. Generally, supraventricular or “atrial arrhythmias” are not as serious as ventricular arrhythmias. Sometimes, they do not even require treatment.
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A growing number of case reports have pointed to a connection between CMT disease and cardiac disturbances. Sporadic case reports have also linked CMT disease with cardiovascular disorders, primarily conduction disturbances and supraventricular arrhythmias.