Cardioversion - the doctor may use an electric shock or medication to reset the heart to its regular rhythm. Ablation therapy - one or more catheters go through blood vessels into the inner heart. They are placed in areas of the heart that are thought to be the source of the arrhythmia and destroy small sections of those tissues. ICD implantable cardioverter-defibrillator - the device is implanted near the left collarbone and monitors heart rhythm; if it detects an abnormally fast rhythm, it stimulates the heart to return to a normal rhythm.
Maze procedure - a series of surgical incisions are made in the heart. They then heal into scars and form blocks. These blocks guide the electrical impulses, helping the heart to beat efficiently. Ventricular aneurysm surgery - sometimes, an aneurysm bulge in a blood vessel that leads to the heart causes an arrhythmia.
If other treatments do not work, a surgeon may remove the aneurysm. Coronary bypass surgery - arteries or veins from elsewhere in the patient's body are grafted to the coronary arteries to bypass any regions that have become narrow, and improve the blood supply to the heart muscle myocardium. This is irregular beating of the atrial chambers - nearly always too fast. Atrial fibrillation is common and mainly affects older patients. Instead of producing a single, strong contraction, the chamber fibrillates quivers. In some cases, the atrium can fibrillate at beats per minute and, in extreme cases, up to While fibrillation consists of many random and different quivers in the atrium, atrial flutter is usually from one area in the atrium that is not conducting properly, so the abnormal heart conduction has a consistent pattern.
Neither are ideal for pumping blood through the heart. Some patients may experience both flutter and fibrillation. Atrial flutter can be a serious condition, and untreated usually leads to fibrillation.
A patient with atrial flutter will typically experience beats per minute. A regular, abnormally rapid heartbeat. The patient experiences a burst of accelerated heartbeats that can last from a few seconds to a few hours. Typically, a patient with SVT will have a heart rate of beats per minute. Atrial fibrillation and flutter are classified under SVTs. Abnormal electrical impulses that start in the ventricles and cause an abnormally fast heartbeat. This often happens if the heart has a scar from a previous heart attack.
Usually, the ventricle will contract more than times a minute. An irregular heart rhythm consisting of very rapid, uncoordinated fluttering contractions of the ventricles. The ventricles do not pump blood properly, they simply quiver. Ventricular fibrillation is life threatening and usually associated with heart disease. It is often triggered by a heart attack.
A heart rhythm disorder that sometimes causes rapid, uncoordinated heartbeats. This can result in fainting, which may be life-threatening. It can be caused by a genetic susceptibility or certain medications. The words arrhythmia and dysrhythmia are interchangable. In other words, they mean the same thing. However, arrhythmia tends to be used more frequently. The doctor will try to find out what triggers the patient's arrhythmia.
Arrhythmia: Causes, symptoms, types, and treatment
This will involve a detailed interview, which may include the patient's medical history, family history, diet, and lifestyle. Stroke - fibrillation quivering means that the heart is not pumping properly. This can cause blood to collect in pools and clots can form. If one of the clots dislodges it may travel to a brain artery, blocking it, and causing a stroke. Stroke can cause brain damage and can sometimes be fatal. Heart failure - prolonged tachycardia or bradycardia can result in the heart not pumping enough blood to the body and its organs - this is heart failure. Treatment can usually help improve this.
Article last updated by Tim Newman on Fri 8 December Visit our Arrhythmia category page for the latest news on this subject, or sign up to our newsletter to receive the latest updates on Arrhythmia. All references are available in the References tab. Bunch T. Day J. Atrial fibrillation is independently associated with senile, vascular, and Alzheimer's dementia.
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Cardiac Arrhythmia - Trinity Health Mid-Atlantic
They are the most common causes of bradycardia:. First, second and third degree block also can occur at the level of the sinoatrial junction. This is referred to as sinoatrial block typically manifesting with various degrees and patterns of sinus bradycardia. Sudden arrhythmic death syndrome SADS , is a term used as part of sudden unexpected death syndrome to describe sudden death due to cardiac arrest brought on by an arrhythmia in the presence or absence of any structural heart disease on autopsy.
The most common cause of sudden death in the US is coronary artery disease specifically because of poor oxygenation of the heart muscle, that is myocardial ischemia or a heart attack  Approximately , to , people die suddenly of this cause every year in the US.
SADS may occur from other causes. There are many inherited conditions and heart diseases that can affect young people which can subsequently cause sudden death without advance symptoms. Causes of SADS in young people include viral myocarditis , long QT syndrome , Brugada syndrome , Catecholaminergic polymorphic ventricular tachycardia , hypertrophic cardiomyopathy and arrhythmogenic right ventricular dysplasia.
The most common symptom of an arrhythmia is an awareness of an abnormal heartbeat, called palpitations. These may be infrequent, frequent, or continuous. Some of these arrhythmias are harmless though distracting for patients but some of them predispose to adverse outcomes.
Some arrhythmias do not cause symptoms, and are not associated with increased mortality. However, some asymptomatic arrhythmias are associated with adverse events. Examples include a higher risk of blood clotting within the heart and a higher risk of insufficient blood being transported to the heart because of weak heartbeat. Other increased risks are of embolisation and stroke, heart failure and sudden cardiac death. If an arrhythmia results in a heartbeat that is too fast, too slow or too weak to supply the body's needs, this manifests as a lower blood pressure and may cause lightheadedness or dizziness, or syncope fainting.
Some types of arrhythmia result in cardiac arrest , or sudden death.