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Arrhythmia

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462: 1055:. This may be caused by a slowed signal from the sinus node (sinus bradycardia), by a pause in the normal activity of the sinus node (sinus arrest), or by blocking of the electrical impulse on its way from the atria to the ventricles (AV block or heart block). Heart block comes in varying degrees and severity. It may be caused by reversible poisoning of the AV node (with drugs that impair conduction) or by irreversible damage to the node. Bradycardias may also be present in the normally functioning heart of endurance athletes or other well-conditioned persons. Bradycardia may also occur in 229: 64: 791:. The normal heart rate of the fetus is between 110 and 160 beats per minute. Any rhythm beyond these limits is abnormal and classed as a fetal arrhythmia. These are mainly the result of premature atrial contractions, usually give no symptoms, and have little consequence. However, around one percent of these will be the result of significant structural damage to the heart. 904:. These cannot usually diagnose specific arrhythmia but can give a general indication of the heart rate and whether it is regular or irregular. Not all the electrical impulses of the heart produce audible or palpable beats; in many cardiac arrhythmias, the premature or abnormal beats do not produce an effective pumping action and are experienced as "skipped" beats. 1043: 1117:
Congenital heart defects are structural or electrical pathway problems in the heart that are present at birth. Anyone can be affected by this because overall health does not play a role in the problem. Problems with the electrical pathway of the heart can cause very fast or even deadly arrhythmias.
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tachycardia is the most common type of ventricular tachycardia in otherwise healthy individuals. This defect is due to an electrical node in the right ventricle just before the pulmonary artery. When the node is stimulated, the patient will go into ventricular tachycardia, which does not allow the
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Normal sinus rhythm, with solid black arrows pointing to normal P waves representative of normal sinus node function, followed by a pause in sinus node activity (resulting in a transient loss of heartbeats). Note that the P wave that disrupts the pause (indicated by the dashed arrow) does not look
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or if conduction is abnormally slow in some areas (for example in heart damage) so the myocardial cells are unable to activate the fast sodium channel, part of the impulse will arrive late and potentially be treated as a new impulse. Depending on the timing, this can produce a sustained abnormal
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Arrhythmia affects millions of people. In Europe and North America, as of 2014, atrial fibrillation affects about 2% to 3% of the population. Atrial fibrillation and atrial flutter resulted in 112,000 deaths in 2013, up from 29,000 in 1990. However, in most recent cases concerning the SARS-CoV‑2
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differs in that the shock is not synchronized. It is needed for the chaotic rhythm of ventricular fibrillation and is also used for pulseless ventricular tachycardia. Often, more electricity is required for defibrillation than for cardioversion. In most defibrillation, the recipient has lost
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and about 15% of all deaths globally. About 80% of sudden cardiac death is the result of ventricular arrhythmias. Arrhythmias may occur at any age but are more common among older people. Arrhythmias may also occur in children; however, the normal range for the heart rate varies with age.
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Triggered beats occur when problems at the level of the ion channels in individual heart cells result in abnormal propagation of electrical activity and can lead to a sustained abnormal rhythm. They are relatively rare and can result from the action of anti-arrhythmic drugs, or after
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Approximately 180,000 to 250,000 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.
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There are many classes of antiarrhythmic medications, with different mechanisms of action and many different individual drugs within these classes. Although the goal of drug therapy is to prevent arrhythmia, nearly every antiarrhythmic drug has the potential to act as a
1479:, they use fine probes inserted through the blood vessels to map electrical activity from within the heart. This allows abnormal areas of conduction to be located very accurately and subsequently destroyed by heat, cold, electrical, or laser probes in a process called 1174:, are the least dangerous dysrhythmias; but they can still produce a decrease in the heart's pumping efficiency because the signal reaches the various parts of the heart muscle with different timing than usual and can be responsible for poorly coordinated contraction. 1313:
in the lack of a normal pulse, but defibrillation is the only intervention that can restore a healthy heart rhythm. Defibrillation is performed by applying an electric shock to the heart, which resets the cells, permitting a normal beat to re-establish itself.
424:, which attempt to restore a normal heart rhythm. This latter group may have more significant side effects, especially if taken for a long period of time. Pacemakers are often used for slow heart rates. Those with an irregular heartbeat are often treated with 1131:
is another complex problem in the heart and has been labeled as an independent factor in mortality. There are multiple methods of treatment for these including cardiac ablations, medication treatment, or lifestyle changes to have less stress and exercise.
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Several physical acts can increase parasympathetic nervous supply to the heart, resulting in blocking of electrical conduction through the AV node. This can slow down or stop several arrhythmias that originate above or at the AV node (see main article:
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refers to a normal phenomenon of alternating mild acceleration and slowing of the heart rate that occurs with breathing in and out respectively. It is usually quite pronounced in children and steadily decreases with age. This can also be present during
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In adults, the normal resting heart rate ranges from 60 to 90 beats per minute. The resting heart rate in children is much faster. In athletes, however, the resting heart rate can be as slow as 40 beats per minute, and be considered normal.
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that uses a catheter to "listen" to the electrical activity from within the heart, additionally if the source of the arrhythmias is found, often the abnormal cells can be ablated and the arrhythmia can be permanently corrected.
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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 a weak heartbeat. Other increased risks are of
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is a single specialized location in the atrium that has a higher automaticity (a faster pacemaker) than the rest of the heart and, therefore, is usually responsible for setting the heart rate and initiating each heartbeat.
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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 lower blood pressure and may cause lightheadedness, dizziness, syncope, loss of consciousness,
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The method of cardiac rhythm management depends firstly on whether the affected person is stable or unstable. Treatments may include physical maneuvers, medications, electricity conversion, or electro- or cryo-cautery.
1154:; however, only some of these cells are designed to routinely trigger heartbeats. These cells are found in the conduction system of the heart and include the SA node, AV node, Bundle of His, and Purkinje fibers. The 444:
pandemic, cardiac arrhythmias are commonly developed and associated with high morbidity and mortality among patients hospitalized with the COVID-19 infection, due to the infection's ability to cause myocardial injury.
2585:"Clinical value of transesophageal atrial stimulation and recording in patients with arrhythmia-related symptoms or documented supraventricular tachycardia--correlation to clinical history and invasive studies" 1388:
Several groups of drugs slow conduction through the heart, without actually preventing an arrhythmia. These drugs can be used to "rate control" a fast rhythm and make it physically tolerable for the patient.
2734:"Circus movement in rabbit atrial muscle as a mechanism of tachycardia. II. The role of nonuniform recovery of excitability in the occurrence of unidirectional block, as studied with multiple microelectrodes" 1339:
In the United States, people admitted to the hospital with cardiac arrhythmia and conduction disorders with and without complications were admitted to the intensive care unit more than half the time in 2011.
1185:. The resulting heart rhythm depends on where the first signal begins: If it is the sinoatrial node, the rhythm remains normal but rapid; if it is an ectopic focus, many types of dysrhythmia may ensue. 1106:. Abnormal impulses can begin by one of three mechanisms: automaticity, re-entry, or triggered activity. A specialized form of re-entry which is both common and problematic is termed fibrillation. 246: 1122:
is due to an extra pathway in the heart that is made up of electrical muscle tissue. This tissue allows the electrical impulse, which stimulates the heartbeat, to happen very rapidly. Right
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Re-entrant arrhythmias occur when an electrical impulse recurrently travels in a tight circle within the heart, rather than moving from one end of the heart to the other and then stopping.
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Wiener N, Rosenblueth A (July 1946). "The mathematical formulation of the problem of conduction of impulses in a network of connected excitable elements, specifically in cardiac muscle".
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When an entire chamber of the heart is involved in multiple micro-re-entry circuits and is, therefore, quivering with chaotic electrical impulses, it is said to be in fibrillation.
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Arrhythmias may also be treated electrically, by applying a shock across the heart â€“ either externally to the chest wall, or internally to the heart via implanted electrodes.
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to the underlying heartbeat. It is used for the treatment of supraventricular tachycardias. In elective cardioversion, the recipient is usually sedated or lightly
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and called sinus tachycardia. Other conditions that increase sympathetic nervous system activity in the heart include ingested or injected substances, such as
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is only approximately 5–6 mm (remaining constant in people of different age and weight). Transesophageal atrial stimulation can differentiate between
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occasioned 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
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to reduce the risk of complications. Those who have severe symptoms from an arrhythmia or are medically unstable may receive urgent treatment with a
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fires more often than the sinoatrial node, it can produce a sustained abnormal rhythm. Rhythms produced by an ectopic focus in the atria, or by the
1293:(VF, or V-fib) can lead to death within minutes. When a heart goes into V-fib, effective pumping of the blood stops. V-fib is considered a form of 3863: 1229: 1204:
impulse will spread through the heart quickly enough that each cell will respond only once. However, if there is some essential heterogeneity of
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Naghavi M, Wang H, Lozano R, Davis A, Liang X, Zhou M, et al. (GBD 2013 Mortality and Causes of Death Collaborators) (January 2015).
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Although the term "tachycardia" has been known for over 160 years, bases for the classification of arrhythmias are still being discussed.
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Peressutti C, Martín-González JM, M García-Manso J, Mesa D (November 2010). "Heart rate dynamics in different levels of Zen meditation".
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Anier A, Kaik J, Meigas K (2008). "Device and methods for performing transesophageal stimulation at reduced pacing current threshold".
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like the previous (normal) P waves – this last P wave is arising from a different part of the atrium, representing an escape rhythm.
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Yasuma F, Hayano J (February 2004). "Respiratory sinus arrhythmia: why does the heartbeat synchronize with respiratory rhythm?".
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This procedure may be completely curative for some forms of arrhythmia, but for others, the success rate remains disappointing.
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Some arrhythmias do not cause symptoms and are not associated with increased mortality. However, some asymptomatic arrhythmias
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is an EKG recorded over a 24-hour period, to detect arrhythmias that may happen briefly and unpredictably throughout the day.
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an arrhythmia. Increased heart rate is a normal response to physical exercise or emotional stress. This is mediated by the
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Cardiac arrhythmia are caused by one of two major mechanism. The first of arrhythmia is a result of enhanced or abnormal
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focus and is, by definition, a pathological phenomenon. This may cause a single premature beat now and then, or, if the
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Many arrhythmias can be effectively treated. Treatments may include medications, medical procedures such as inserting a
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First, second, and third-degree blocks also can occur at the level of the sinoatrial junction. This is referred to as
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PVCs that occur at intervals of 2 normal beats to 1 PVC, or 1 normal beat to 2 PVCs, are termed "PVCs in trigeminy"
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Tachycardia that is not sinus tachycardia usually results from the addition of abnormal impulses to the normal
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Some arrhythmias promote blood clotting within the heart and increase the risk of embolus and stroke.
1278:. Atrial fibrillation may be due to serious underlying medical conditions and should be evaluated by a 1220:) are considered to be the main mechanism of life-threatening cardiac arrhythmias. In particular, the 1150:
cell firing off an impulse on its own. All of the cells in the heart have the ability to initiate an
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A more advanced study of the heart's electrical activity can be performed to assess the source of the
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Any part of the heart that initiates an impulse without waiting for the sinoatrial node is called an
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Hadziselimovic E, Thomsen JH, Kjaergaard J, Køber L, Graff C, Pehrson S, et al. (July 2018).
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Winkel BG, Holst AG, Theilade J, Kristensen IB, Thomsen JL, Ottesen GL, et al. (April 2011).
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Groups of three premature ventricular beats are called triplets and are considered a brief run of
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In adults and children over 15, resting heart rate faster than 100 beats per minute is labeled
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Broad classification of arrhythmias according to region of heart required to sustain the rhythm
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Each heartbeat originates as an electrical impulse from a small area of tissue in the right
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Vogler J, Breithardt G, Eckardt L (July 2012). "Bradyarrhythmias and conduction blocks".
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Chugh SS, Reinier K, Teodorescu C, Evanado A, Kehr E, Al Samara M, et al. (2008).
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The most common symptom of arrhythmia is an awareness of an abnormal heartbeat, called
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for patients) but some of them predispose to adverse outcomes. Arrhythmias also cause
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The term cardiac arrhythmia covers a very large number of very different conditions.
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Den Ruijter HM, Berecki G, Opthof T, Verkerk AO, Zock PL, Coronel R (January 2007).
2566: 1886: 1289:(lower chambers) of the heart; it is always a medical emergency. If left untreated, 290:, and a resting heart rate that is too slow – below 60 beats per minute – is called 4108: 4082: 3926: 3874: 3547: 3523: 3493: 3470: 3339: 3329: 2618: 1251:
can be protective against arrhythmias, they can facilitate re-entrant arrhythmias.
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Arrhythmias due to medications have been reported since the 1920s with the use of
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Some cardiologists further sub-specialize into electrophysiology. In specialized
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in every direction but will do so only once within a short time. Normally, the
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may be placed in situations where the bradycardia is not expected to recover.
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Pehrson SM, Blomström-Lundqvist C, Ljungström E, Blomström P (October 1994).
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causing a synchronized contraction of the heart muscle and, thus, the pulse.
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breathing exercises that involve deep inhaling and breath holding patterns.
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Cardiac arrhythmia is often first detected by simple but nonspecific means:
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Barrett ML, Smith MW, Elizhauser A, Honigman LS, Pines JM (December 2014).
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or feeling a pause between heartbeats. In more serious cases, there may be
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This article is about the irregular heartbeat. For the skin condition, see
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Atrial fibrillation affects the upper chambers of the heart, known as the
1002:. The impulse initially causes both atria to contract, then activates the 3997: 3154: 2759: 1684:. National Heart, Lung, and Blood Institute. July 1, 2011. Archived from 1476: 1397: 1248: 1217: 1197: 1084: 678: 588:
Premature ventricular beats occurring after every normal beat are termed
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Mehra R (2007). "Global public health problem of sudden cardiac death".
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is either achieved pharmacologically or via the application of a shock
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specifically because of poor oxygenation of the heart muscle, that is
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blocks, because the vast majority of them arise from pathology at the
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Cardiac arrhythmia, heart arrhythmia, dysrhythmia, irregular heartbeat
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is one way to diagnose and assess the risk of any given arrhythmia.
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that is too fast – above 100 beats per minute in adults – is called
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Kiladze MR, Lyakhova UA, Lyakhov PA, Nagornov NN, Vahabi M (2023).
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is common in the thin walls of the atria, sometimes resulting in
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Cardiac Arrhythmias: Their Mechanisms, Diagnosis, and Management
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Heart sounds of a girl experiencing arrhythmia after exercising.
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Group of medical conditions characterized by irregular heartbeat
3118: 2800:"Pro- and antiarrhythmic properties of a diet rich in fish oil" 2002:"Arrhythmias and sudden cardiac death in the COVID-19 pandemic" 1527: 1237: 412:, and surgery. Medications for a fast heart rate may include 1900:
Zoni-Berisso M, Lercari F, Carazza T, Domenicucci S (2014).
1270:): ventricular fibrillation is imminently life-threatening. 227: 2114:(10th ed.). Philadelphia, PA: Williams & Wilkins. 1902:"Epidemiology of atrial fibrillation: European perspective" 1785:. National Heart, Lung, and Blood Institute. July 1, 2011. 1746:. National Heart, Lung, and Blood Institute. July 1, 2011. 1717:. National Heart, Lung, and Blood Institute. July 1, 2011. 1598:. National Heart, Lung, and Blood Institute. July 1, 2011. 1353:). Parasympathetic nervous supply to the heart is via the 712:
typically manifesting with various degrees and patterns of
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Defibrillation or cardioversion may be accomplished by an
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to a part where the distance to the posterior wall of the
397:. A number of tests can help with diagnosis, including an 1490:
is often curable by ablating one of the pathways in the
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syndromes, which utilize abnormal conduction pathways.
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diagnostic test for assessment of heart rhythm is the
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and stroke, heart failure, and sudden cardiac death.
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Catecholaminergic polymorphic ventricular tachycardia
2999: 2390:"Overview of Basic Mechanisms of Cardiac Arrhythmia" 1538:, particularly in patients treated with 33 Â°C. 337:
Arrhythmias are often categorized into four groups:
4164: 4107: 4016: 3983: 3955: 3913: 3872: 3849: 3823: 3791: 3749: 3730: 3629: 3615: 3515: 3469: 3455: 3371: 3320: 3313: 3250: 3205: 3162: 3153: 3077: 3003: 2178:"Epidemiology and genetics of sudden cardiac death" 1596:"What Are the Signs and Symptoms of an Arrhythmia?" 1051:A slow rhythm (less than 60 beats/min) is labelled 659:. They are the most common causes of bradycardia: 484:Arrhythmias are also classified by site of origin: 215: 203: 187: 176: 154: 146: 130: 94: 82: 53: 48: 1447:Electrical treatment of arrhythmias also includes 2871:"AED Buyer's Guide | AED Prices & Comparison" 2777:(3 ed.). Lippincott Williams & Wilkins. 1297:. An affected individual will not survive unless 1550:physiological phenomenon, associated with lower 1437:consciousness so there is no need for sedation. 1357:, and these maneuvers are collectively known as 1127:heart to fill with blood before beating again. 2704:Archivos del Instituto de Cardiologia de Mexico 2437:Willcox ME, Compton SJ, Bardy GH (2021-12-01). 1808:Martin CA, Matthews GD, Huang CL (April 2012). 963:. It can also evaluate the risk in people with 852:Medical assessment of the abnormality using an 2841:"Utilization of Intensive Care Services, 2011" 1502:isolation, but the results are less reliable. 1177:Conditions that increase automaticity include 3130: 2368:"Passing Out (Syncope) Caused by Arrhythmias" 2320:"Fetal arrhythmias: Diagnosis and management" 1738: 1736: 1709: 1707: 1705: 1703: 1676: 1674: 1672: 1670: 1668: 1666: 1664: 1662: 1660: 8: 2388:Antzelevitch C, Burashnikov A (March 2011). 1629: 1627: 1625: 1623: 1621: 1619: 1617: 1590: 1588: 1586: 1584: 1216:, vortices of excitation in the myocardium ( 926:heart beats. This can be accomplished in an 448:is the cause of about half of deaths due to 2324:Indian Pacing and Electrophysiology Journal 1777: 1775: 1773: 1771: 1769: 1767: 1765: 393:. Arrhythmias are due to problems with the 3746: 3626: 3466: 3447:Arrhythmogenic right ventricular dysplasia 3317: 3159: 3137: 3123: 3115: 3000: 2894: 2892: 2890: 2047: 2045: 1542:are not associated with increased risk of 1282:. It is not typically a medical emergency. 777:arrhythmogenic right ventricular dysplasia 636:Arrhythmogenic right ventricular dysplasia 45: 2916: 2815: 2749: 2600: 2521: 2472: 2454: 2413: 2343: 2291: 2250: 2201: 2152: 2025: 1976: 1927: 1917: 1833: 1639:National Heart, Lung, and Blood Institute 990:Electrical conduction system of the heart 395:electrical conduction system of the heart 182:electrical conduction system of the heart 2313: 2311: 2112:Marriott's Practical Electrocardiography 1228:. Re-entry is also responsible for most 391:atrioventricular conduction disturbances 365:. Supraventricular tachycardias include 2732:, Bonke FI, Schopman FJ (August 1976). 1580: 1285:Ventricular fibrillation occurs in the 1230:paroxysmal supraventricular tachycardia 1000:sinus node or sinoatrial node (SA node) 755:Causes of SADS in young people include 375:paroxysmal supraventricular tachycardia 3181:Spontaneous coronary artery dissection 2135:Zipes DP, Wellens HJ (November 1998). 1442:implantable cardioverter-defibrillator 961:atrioventricular reentrant tachycardia 469:Arrhythmia may be classified by rate ( 298:. Symptoms, when present, may include 261: 2938: 2936: 1789:from the original on 17 February 2015 1750:from the original on 18 February 2015 1602:from the original on 19 February 2015 1532:targeted temperature management (TTM) 1498:can also be treated, by performing a 599:non-sustained ventricular tachycardia 7: 3505:Nonbacterial thrombotic endocarditis 2899:Heist EK, Ruskin JN (October 2010). 2087:Farzam K, Richards JR (2022-12-27). 1309:CPR can prolong the survival of the 1262:Fibrillation can affect the atrium ( 666:, which manifests as PR prolongation 509:Premature atrial contractions (PACs) 294:. Some types of arrhythmias have no 2961:10.1016/j.resuscitation.2018.04.037 2669:International Journal of Cardiology 2231:Progress in Cardiovascular Diseases 2089:"Premature ventricular contraction" 1715:"Who Is at Risk for an Arrhythmia?" 1091:, and an overactive thyroid gland ( 845:Some types of arrhythmia result in 621:Polymorphic ventricular tachycardia 616:Monomorphic ventricular tachycardia 3801:Accelerated idioventricular rhythm 2066:10.1016/j.jelectrocard.2007.06.023 1404:, and anti-platelet drugs such as 939:Transesophageal atrial stimulation 787:Arrhythmias may also occur in the 727:(SADS), is a term used as part of 611:Accelerated idioventricular rhythm 583:Premature ventricular contractions 529:Supraventricular tachycardia (SVT) 377:. Ventricular arrhythmias include 359:premature ventricular contractions 25: 2918:10.1161/circulationaha.109.894725 2394:Cardiac Electrophysiology Clinics 2194:10.1161/circulationaha.111.023838 2176:Deo R, Albert CM (January 2012). 1721:from the original on 3 March 2015 1645:from the original on 2 March 2015 1408:can reduce the risk of clotting. 363:premature junctional contractions 207:Medications, medical procedures ( 2859:from the original on 2015-04-02. 1744:"How Are Arrhythmias Diagnosed?" 1196:Every cardiac cell can transmit 729:sudden unexpected death syndrome 725:Sudden arrhythmic death syndrome 720:Sudden arrhythmic death syndrome 688:Type 2 Second degree heart block 675:Type 1 Second degree heart block 571:Premature junctional contraction 320:decreased level of consciousness 262:Problems playing this file? See 243: 125:decreased level of consciousness 62: 3486:Subacute bacterial endocarditis 2817:10.1016/j.cardiores.2006.06.014 2547:Estonian Journal of Engineering 1859:Revista Espanola de Cardiologia 1004:atrioventricular node (AV node) 641:Re-entry ventricular arrhythmia 1783:"How Are Arrhythmias Treated?" 1488:AV nodal reentrant tachycardia 1120:Wolff–Parkinson–White syndrome 965:Wolff–Parkinson–White syndrome 957:AV nodal reentrant tachycardia 880:network. The second is due to 556:AV nodal reentrant tachycardia 544:AV nodal reentrant tachycardia 385:. Bradyarrhythmias are due to 1: 4003:Pulseless electrical activity 3932:Multifocal atrial tachycardia 3806:Catecholaminergic polymorphic 1969:10.1016/S0140-6736(14)61682-2 1351:supraventricular tachycardias 1299:cardiopulmonary resuscitation 881: 868:formation originating at the 524:Multifocal atrial tachycardia 355:premature atrial contractions 343:supraventricular tachycardias 163:supraventricular tachycardias 2681:10.1016/j.ijcard.2009.06.058 2054:Journal of Electrocardiology 1826:10.1136/heartjnl-2011-300953 1494:(usually the slow pathway). 969:supraventricular tachycardia 915:(abbreviated ECG or EKG). A 900:, or feeling for peripheral 278:, are irregularities in the 2523:10.1109/ACCESS.2023.3335176 2318:Batra AS, Balaji S (2019). 840:persistent vegetative state 773:hypertrophic cardiomyopathy 36:arrhythmia (disambiguation) 4241: 3947:Wandering atrial pacemaker 3494:non-infective endocarditis 3435:Endocardial fibroelastosis 2456:10.1016/j.hroo.2021.09.008 2406:10.1016/j.ccep.2010.10.012 2336:10.1016/j.ipej.2019.02.007 2243:10.1016/j.pcad.2008.06.003 2018:10.1007/s00059-020-04924-0 1546:, and may be considered a 1368: 1179:sympathetic nervous system 1139: 1077:sympathetic nervous system 987: 984:Normal electrical activity 539:Atrial fibrillation (Afib) 514:Wandering atrial pacemaker 239:Emma's irregular heartbeat 29: 4025:hexaxial reference system 3970:Jervell and Lange-Nielsen 3500:Libman–Sacks endocarditis 2901:"Drug-induced arrhythmia" 2154:10.1161/01.CIR.98.21.2334 1871:10.1016/j.rec.2012.01.027 1554:in univariable analyses. 1305:are provided immediately. 1146:Automaticity refers to a 1124:ventricular outflow tract 884:conduction disturbances. 670:Second-degree heart block 430:controlled electric shock 70: 61: 3905:Ventricular fibrillation 3176:Coronary artery aneurysm 2293:10.1093/eurheartj/ehq428 1291:ventricular fibrillation 1268:ventricular fibrillation 998:of the heart called the 896:of the heartbeat with a 699:Third-degree heart block 664:First-degree heart block 651:These are also known as 626:Ventricular fibrillation 379:ventricular fibrillation 72:Ventricular fibrillation 4182:Diastolic heart failure 4156:Athletic heart syndrome 4117:Ventricular hypertrophy 3851:Pre-excitation syndrome 3705:Left posterior fascicle 3230:Acute coronary syndrome 3170:Coronary artery disease 2804:Cardiovascular Research 2773:Mandel WJ, ed. (1995). 2751:10.1161/01.RES.39.2.168 2646:10.1378/chest.125.2.683 1564:Pre-excitation syndrome 1234:ventricular tachycardia 967:, as well as terminate 928:electrophysiology study 741:coronary artery disease 603:ventricular tachycardia 383:ventricular tachycardia 347:ventricular arrhythmias 330:. Others may result in 167:ventricular arrhythmias 3700:Left anterior fascicle 3480:infective endocarditis 3265:Hibernating myocardium 3146:Cardiovascular disease 2845:HCUP Statistical Brief 2602:10.1002/clc.4960171004 2449:(6, Part A): 543–559. 2280:European Heart Journal 2137:"Sudden cardiac death" 2060:(6 Suppl): S118–S122. 1569:Holiday heart syndrome 1544:ventricular arrhythmia 1530:) are frequent during 1198:impulses of excitation 1057:some types of seizures 1048: 979:Differential diagnosis 932:endovascular procedure 577:Ventricular arrhythmia 566:Junctional tachycardia 466: 450:cardiovascular disease 387:sinus node dysfunction 353:. Extra beats include 232: 34:. For other uses, see 3864:Wolff–Parkinson–White 3824:Premature contraction 3722:Adams–Stokes syndrome 3425:Loeffler endocarditis 3235:Myocardial infarction 2559:10.3176/eng.2008.2.05 2000:Kuck KH (June 2020). 1906:Clinical Epidemiology 1682:"Types of Arrhythmia" 1635:"What Is Arrhythmia?" 1477:catheter laboratories 1461:myocardial infarction 1371:Antiarrhythmic agents 1222:autowave reverberator 1172:atrioventricular node 1142:Automatic tachycardia 1045: 657:atrioventricular node 550:Junctional arrhythmia 464: 418:antiarrhythmic agents 231: 4031:Right axis deviation 3993:Sudden cardiac death 3351:Pericardial effusion 3294:Ventricular aneurysm 2738:Circulation Research 1396:medications such as 1365:Antiarrhythmic drugs 1266:) or the ventricle ( 703:complete heart block 590:ventricular bigeminy 446:Sudden cardiac death 4225:Medical emergencies 4036:Left axis deviation 3893:Atrial fibrillation 3888:Ventricular flutter 3811:Torsades de pointes 3685:Bundle branch block 3644:Sick sinus syndrome 3430:Cardiac amyloidosis 3415:Tachycardia-induced 3270:Myocardial stunning 3218:Prinzmetal's angina 3187:Coronary thrombosis 2589:Clinical Cardiology 2514:2023IEEEA..11m3744K 1919:10.2147/CLEP.S47385 1496:Atrial fibrillation 1455:(for example, from 1430:for the procedure. 1264:atrial fibrillation 1245:omega-3 fatty acids 849:, or sudden death. 816:shortness of breath 745:myocardial ischemia 731:to describe sudden 631:Torsades de pointes 367:atrial fibrillation 312:shortness of breath 276:cardiac arrhythmias 117:shortness of breath 4220:Cardiac arrhythmia 4139:Atrial enlargement 3937:Pacemaker syndrome 3859:Lown–Ganong–Levine 3781:Junctional ectopic 3776:AV nodal reentrant 3282:Myocardial rupture 3192:Coronary vasospasm 3078:External resources 2110:Wagner GS (2001). 1471:Electrical cautery 1344:Physical maneuvers 1049: 795:Signs and symptoms 519:Atrial tachycardia 467: 233: 180:Problems with the 4207: 4206: 4199:Obstructive shock 4103: 4102: 4050:Short QT syndrome 4017:Other / ungrouped 4008:Sinoatrial arrest 3923:Ectopic pacemaker 3819: 3818: 3639:Sinus bradycardia 3611: 3610: 3607: 3606: 3356:Cardiac tamponade 3309: 3308: 3299:Dressler syndrome 3197:Myocardial bridge 3101: 3100: 2911:(14): 1426–1435. 2784:978-0-397-51185-3 2508:: 133744–133754. 2147:(21): 2334–2351. 1963:(9963): 117–171. 1524:electrocardiogram 1481:catheter ablation 1218:autowave vortices 1206:refractory period 913:electrocardiogram 854:electrocardiogram 757:viral myocarditis 714:sinus bradycardia 561:Junctional rhythm 504:Sinus tachycardia 494:Sinus bradycardia 488:Atrial arrhythmia 399:electrocardiogram 249: 223: 222: 194:Electrocardiogram 189:Diagnostic method 76:electrocardiogram 43:Medical condition 16:(Redirected from 4232: 4172:Cardiac fibrosis 4064:T wave alternans 3957:Long QT syndrome 3751:Supraventricular 3747: 3680:Intraventricular 3627: 3467: 3318: 3163:Coronary disease 3160: 3139: 3132: 3125: 3116: 3001: 2989: 2988: 2940: 2931: 2930: 2920: 2896: 2885: 2884: 2882: 2881: 2867: 2861: 2860: 2836: 2830: 2829: 2819: 2795: 2789: 2788: 2770: 2764: 2763: 2753: 2726: 2720: 2719: 2699: 2693: 2692: 2664: 2658: 2657: 2629: 2623: 2622: 2604: 2580: 2571: 2570: 2542: 2536: 2535: 2525: 2493: 2487: 2486: 2476: 2458: 2434: 2428: 2427: 2417: 2385: 2379: 2378: 2376: 2374: 2364: 2358: 2357: 2347: 2315: 2306: 2305: 2295: 2271: 2265: 2264: 2254: 2222: 2216: 2215: 2205: 2173: 2167: 2166: 2156: 2132: 2126: 2125: 2107: 2101: 2100: 2084: 2078: 2077: 2049: 2040: 2039: 2029: 1997: 1991: 1990: 1980: 1948: 1942: 1941: 1931: 1921: 1897: 1891: 1890: 1854: 1848: 1847: 1837: 1805: 1799: 1798: 1796: 1794: 1779: 1760: 1759: 1757: 1755: 1740: 1731: 1730: 1728: 1726: 1711: 1698: 1697: 1695: 1693: 1678: 1655: 1654: 1652: 1650: 1641:. July 1, 2011. 1631: 1612: 1611: 1609: 1607: 1592: 1518:was determined. 1516:QTc prolongation 1232:, and dangerous 1209:circuit rhythm. 1202:action potential 1181:stimulation and 1152:action potential 1129:Long QT syndrome 1027:sinus arrhythmia 959:and orthodromic 941: 940: 783:Fetal arrhythmia 765:Brugada syndrome 761:long QT syndrome 710:sinoatrial block 701:, also known as 690:, also known as 677:, also known as 499:Sinus arrhythmia 351:bradyarrhythmias 274:, also known as 251: 250: 230: 171:bradyarrhythmias 66: 46: 21: 4240: 4239: 4235: 4234: 4233: 4231: 4230: 4229: 4210: 4209: 4208: 4203: 4194:Rheumatic fever 4160: 4099: 4012: 3979: 3951: 3909: 3868: 3845: 3815: 3787: 3734: 3726: 3620: 3603: 3511: 3460: 3451: 3367: 3361:Hemopericardium 3305: 3246: 3240:Unstable angina 3213:Angina pectoris 3206:Active ischemia 3201: 3149: 3143: 3102: 3097: 3096: 3073: 3072: 3012: 2998: 2993: 2992: 2942: 2941: 2934: 2898: 2897: 2888: 2879: 2877: 2869: 2868: 2864: 2838: 2837: 2833: 2797: 2796: 2792: 2785: 2772: 2771: 2767: 2728: 2727: 2723: 2701: 2700: 2696: 2666: 2665: 2661: 2631: 2630: 2626: 2595:(10): 528–534. 2582: 2581: 2574: 2544: 2543: 2539: 2495: 2494: 2490: 2443:Heart Rhythm O2 2436: 2435: 2431: 2387: 2386: 2382: 2372: 2370: 2366: 2365: 2361: 2317: 2316: 2309: 2273: 2272: 2268: 2224: 2223: 2219: 2175: 2174: 2170: 2134: 2133: 2129: 2122: 2109: 2108: 2104: 2086: 2085: 2081: 2051: 2050: 2043: 1999: 1998: 1994: 1950: 1949: 1945: 1899: 1898: 1894: 1856: 1855: 1851: 1807: 1806: 1802: 1792: 1790: 1781: 1780: 1763: 1753: 1751: 1742: 1741: 1734: 1724: 1722: 1713: 1712: 1701: 1691: 1689: 1680: 1679: 1658: 1648: 1646: 1633: 1632: 1615: 1605: 1603: 1594: 1593: 1582: 1577: 1560: 1508: 1473: 1463:). A permanent 1414: 1386: 1373: 1367: 1359:vagal maneuvers 1346: 1333: 1325:depolarizations 1320: 1318:Triggered beats 1257: 1191: 1156:sinoatrial node 1144: 1138: 1115: 1093:hyperthyroidism 1065: 1040: 1016:Purkinje fibers 992: 986: 981: 938: 937: 890: 862: 797: 785: 722: 649: 579: 552: 490: 479:premature beats 459: 432:in the form of 304:lightheadedness 269: 268: 260: 258: 257: 256: 255: 252: 244: 241: 234: 228: 109:lightheadedness 44: 39: 28: 23: 22: 15: 12: 11: 5: 4238: 4236: 4228: 4227: 4222: 4212: 4211: 4205: 4204: 4202: 4201: 4196: 4191: 4190: 4189: 4187:Cardiac asthma 4184: 4174: 4168: 4166: 4162: 4161: 4159: 4158: 4153: 4152: 4151: 4146: 4136: 4135: 4134: 4129: 4124: 4113: 4111: 4105: 4104: 4101: 4100: 4098: 4097: 4095:Strain pattern 4092: 4091: 4090: 4085: 4080: 4068: 4067: 4066: 4054: 4053: 4052: 4040: 4039: 4038: 4033: 4020: 4018: 4014: 4013: 4011: 4010: 4005: 4000: 3995: 3989: 3987: 3985:Cardiac arrest 3981: 3980: 3978: 3977: 3972: 3967: 3965:Andersen–Tawil 3961: 3959: 3953: 3952: 3950: 3949: 3944: 3939: 3934: 3929: 3919: 3917: 3911: 3910: 3908: 3907: 3902: 3901: 3900: 3890: 3885: 3883:Atrial flutter 3879: 3877: 3870: 3869: 3867: 3866: 3861: 3855: 3853: 3847: 3846: 3844: 3843: 3838: 3833: 3827: 3825: 3821: 3820: 3817: 3816: 3814: 3813: 3808: 3803: 3797: 3795: 3789: 3788: 3786: 3785: 3784: 3783: 3778: 3768: 3767: 3766: 3755: 3753: 3744: 3728: 3727: 3725: 3724: 3719: 3718: 3717: 3712: 3707: 3702: 3697: 3692: 3682: 3677: 3676: 3675: 3670: 3665: 3655: 3646: 3641: 3635: 3633: 3624: 3613: 3612: 3609: 3608: 3605: 3604: 3602: 3601: 3600: 3599: 3594: 3582: 3581: 3580: 3575: 3563: 3562: 3561: 3556: 3544: 3543: 3542: 3537: 3532: 3519: 3517: 3513: 3512: 3510: 3509: 3508: 3507: 3502: 3490: 3489: 3488: 3475: 3473: 3464: 3453: 3452: 3450: 3449: 3444: 3443: 3442: 3437: 3432: 3427: 3422: 3417: 3412: 3407: 3406: 3405: 3393:Cardiomyopathy 3390: 3389: 3388: 3386:Chagas disease 3377: 3375: 3369: 3368: 3366: 3365: 3364: 3363: 3358: 3348: 3347: 3346: 3337: 3326: 3324: 3315: 3311: 3310: 3307: 3306: 3304: 3303: 3302: 3301: 3296: 3286: 3285: 3284: 3274: 3273: 3272: 3267: 3256: 3254: 3248: 3247: 3245: 3244: 3243: 3242: 3237: 3227: 3226: 3225: 3220: 3209: 3207: 3203: 3202: 3200: 3199: 3194: 3189: 3184: 3178: 3173: 3166: 3164: 3157: 3151: 3150: 3144: 3142: 3141: 3134: 3127: 3119: 3113: 3112: 3099: 3098: 3095: 3094: 3082: 3081: 3079: 3075: 3074: 3071: 3070: 3059: 3048: 3033: 3013: 3008: 3007: 3005: 3004:Classification 2997: 2996:External links 2994: 2991: 2990: 2932: 2886: 2862: 2831: 2810:(2): 316–325. 2790: 2783: 2765: 2744:(2): 168–177. 2721: 2710:(3): 205–265. 2694: 2675:(1): 142–146. 2659: 2640:(2): 683–690. 2624: 2572: 2537: 2488: 2429: 2380: 2359: 2330:(3): 104–109. 2307: 2286:(8): 983–990. 2266: 2237:(3): 213–228. 2217: 2188:(4): 620–637. 2168: 2127: 2120: 2102: 2091:. StatPearls. 2079: 2041: 2012:(4): 325–326. 1992: 1943: 1892: 1865:(7): 656–667. 1849: 1820:(7): 536–543. 1800: 1761: 1732: 1699: 1688:on 7 June 2015 1656: 1613: 1579: 1578: 1576: 1573: 1572: 1571: 1566: 1559: 1556: 1536:cardiac arrest 1507: 1504: 1500:pulmonary vein 1472: 1469: 1449:cardiac pacing 1434:Defibrillation 1413: 1410: 1385: 1382: 1378:pro-arrhythmic 1369:Main article: 1366: 1363: 1345: 1342: 1332: 1329: 1319: 1316: 1307: 1306: 1303:defibrillation 1295:cardiac arrest 1283: 1256: 1253: 1226:atrial flutter 1190: 1187: 1148:cardiac muscle 1140:Main article: 1137: 1134: 1114: 1111: 1064: 1061: 1039: 1036: 988:Main article: 985: 982: 980: 977: 953:atrial flutter 917:Holter monitor 889: 886: 861: 858: 847:cardiac arrest 796: 793: 784: 781: 737:cardiac arrest 721: 718: 706: 705: 696: 695: 694: 685: 667: 648: 645: 644: 643: 638: 633: 628: 623: 618: 613: 608: 607: 606: 595: 592: 578: 575: 574: 573: 568: 563: 558: 551: 548: 547: 546: 541: 536: 534:Atrial flutter 531: 526: 521: 516: 511: 506: 501: 496: 489: 486: 458: 457:Classification 455: 438:defibrillation 426:blood thinners 403:Holter monitor 371:atrial flutter 259: 253: 242: 237: 236: 235: 226: 225: 224: 221: 220: 217: 213: 212: 205: 201: 200: 198:Holter monitor 191: 185: 184: 178: 174: 173: 156: 152: 151: 148: 144: 143: 134: 128: 127: 98: 92: 91: 86: 80: 79: 68: 67: 59: 58: 55: 51: 50: 42: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4237: 4226: 4223: 4221: 4218: 4217: 4215: 4200: 4197: 4195: 4192: 4188: 4185: 4183: 4180: 4179: 4178: 4177:Heart failure 4175: 4173: 4170: 4169: 4167: 4163: 4157: 4154: 4150: 4147: 4145: 4142: 4141: 4140: 4137: 4133: 4130: 4128: 4125: 4123: 4120: 4119: 4118: 4115: 4114: 4112: 4110: 4106: 4096: 4093: 4089: 4088:ST depression 4086: 4084: 4081: 4079: 4076: 4075: 4074: 4073: 4069: 4065: 4062: 4061: 4060: 4059: 4055: 4051: 4048: 4047: 4046: 4045: 4041: 4037: 4034: 4032: 4029: 4028: 4027: 4026: 4022: 4021: 4019: 4015: 4009: 4006: 4004: 4001: 3999: 3996: 3994: 3991: 3990: 3988: 3986: 3982: 3976: 3973: 3971: 3968: 3966: 3963: 3962: 3960: 3958: 3954: 3948: 3945: 3943: 3940: 3938: 3935: 3933: 3930: 3928: 3924: 3921: 3920: 3918: 3916: 3912: 3906: 3903: 3899: 3896: 3895: 3894: 3891: 3889: 3886: 3884: 3881: 3880: 3878: 3876: 3871: 3865: 3862: 3860: 3857: 3856: 3854: 3852: 3848: 3842: 3839: 3837: 3834: 3832: 3829: 3828: 3826: 3822: 3812: 3809: 3807: 3804: 3802: 3799: 3798: 3796: 3794: 3790: 3782: 3779: 3777: 3774: 3773: 3772: 3769: 3765: 3762: 3761: 3760: 3757: 3756: 3754: 3752: 3748: 3745: 3742: 3738: 3733: 3729: 3723: 3720: 3716: 3715:Trifascicular 3713: 3711: 3708: 3706: 3703: 3701: 3698: 3696: 3693: 3691: 3688: 3687: 3686: 3683: 3681: 3678: 3674: 3671: 3669: 3666: 3664: 3661: 3660: 3659: 3656: 3654: 3650: 3647: 3645: 3642: 3640: 3637: 3636: 3634: 3632: 3628: 3625: 3623: 3618: 3614: 3598: 3597:regurgitation 3595: 3593: 3590: 3589: 3588: 3587: 3583: 3579: 3578:regurgitation 3576: 3574: 3571: 3570: 3569: 3568: 3564: 3560: 3559:regurgitation 3557: 3555: 3552: 3551: 3550: 3549: 3545: 3541: 3540:regurgitation 3538: 3536: 3533: 3531: 3528: 3527: 3526: 3525: 3521: 3520: 3518: 3514: 3506: 3503: 3501: 3498: 3497: 3496: 3495: 3491: 3487: 3484: 3483: 3482: 3481: 3477: 3476: 3474: 3472: 3468: 3465: 3463: 3458: 3454: 3448: 3445: 3441: 3438: 3436: 3433: 3431: 3428: 3426: 3423: 3421: 3418: 3416: 3413: 3411: 3408: 3404: 3401: 3400: 3399: 3396: 3395: 3394: 3391: 3387: 3384: 3383: 3382: 3379: 3378: 3376: 3374: 3370: 3362: 3359: 3357: 3354: 3353: 3352: 3349: 3345: 3341: 3338: 3336: 3333: 3332: 3331: 3328: 3327: 3325: 3323: 3319: 3316: 3312: 3300: 3297: 3295: 3292: 3291: 3290: 3287: 3283: 3280: 3279: 3278: 3275: 3271: 3268: 3266: 3263: 3262: 3261: 3258: 3257: 3255: 3253: 3249: 3241: 3238: 3236: 3233: 3232: 3231: 3228: 3224: 3223:Stable angina 3221: 3219: 3216: 3215: 3214: 3211: 3210: 3208: 3204: 3198: 3195: 3193: 3190: 3188: 3185: 3182: 3179: 3177: 3174: 3171: 3168: 3167: 3165: 3161: 3158: 3156: 3152: 3147: 3140: 3135: 3133: 3128: 3126: 3121: 3120: 3117: 3111: 3107: 3104: 3103: 3093: 3089: 3088: 3084: 3083: 3080: 3076: 3069: 3065: 3064: 3060: 3058: 3054: 3053: 3049: 3047: 3043: 3042: 3038: 3034: 3032: 3028: 3024: 3023: 3019: 3015: 3014: 3011: 3006: 3002: 2995: 2986: 2982: 2978: 2974: 2970: 2966: 2962: 2958: 2954: 2950: 2949:Resuscitation 2946: 2939: 2937: 2933: 2928: 2924: 2919: 2914: 2910: 2906: 2902: 2895: 2893: 2891: 2887: 2876: 2872: 2866: 2863: 2858: 2854: 2850: 2846: 2842: 2835: 2832: 2827: 2823: 2818: 2813: 2809: 2805: 2801: 2794: 2791: 2786: 2780: 2776: 2769: 2766: 2761: 2757: 2752: 2747: 2743: 2739: 2735: 2731: 2725: 2722: 2717: 2713: 2709: 2705: 2698: 2695: 2690: 2686: 2682: 2678: 2674: 2670: 2663: 2660: 2655: 2651: 2647: 2643: 2639: 2635: 2628: 2625: 2620: 2616: 2612: 2608: 2603: 2598: 2594: 2590: 2586: 2579: 2577: 2573: 2568: 2564: 2560: 2556: 2552: 2548: 2541: 2538: 2533: 2529: 2524: 2519: 2515: 2511: 2507: 2503: 2499: 2492: 2489: 2484: 2480: 2475: 2470: 2466: 2462: 2457: 2452: 2448: 2444: 2440: 2433: 2430: 2425: 2421: 2416: 2411: 2407: 2403: 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1453:bradycardia 1412:Electricity 1384:Other drugs 1355:vagus nerve 1073:necessarily 1069:tachycardia 1053:bradycardia 949:left atrium 898:stethoscope 808:distracting 735:because of 475:bradycardia 471:tachycardia 339:extra beats 308:passing out 292:bradycardia 288:tachycardia 272:Arrhythmias 159:Extra beats 147:Usual onset 113:passing out 54:Other names 4214:Categories 3873:Flutter / 3836:Junctional 3771:Junctional 3764:Multifocal 3737:paroxysmal 3653:Sinoatrial 3622:arrhythmia 3617:Conduction 3373:Myocardium 3106:Arrhythmia 3063:DiseasesDB 2880:2021-08-13 2875:AED Brands 2553:(2): 154. 2121:0683307460 1575:References 1331:Management 1301:(CPR) and 1287:ventricles 1081:sinus node 1032:meditation 1008:ventricles 971:caused by 888:Diagnostic 812:chest pain 683:Wenckebach 401:(ECG) and 316:chest pain 284:heart rate 264:media help 211:), surgery 121:chest pain 89:Cardiology 49:Arrhythmia 4132:Pulmonary 3915:Pacemaker 3586:pulmonary 3567:tricuspid 3403:Alcoholic 2969:0300-9572 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882:re-entry 878:Purkinje 679:Mobitz I 420:such as 296:symptoms 219:Millions 96:Symptoms 32:erythema 3398:Dilated 3340:Chronic 3148:(heart) 3057:D001145 2619:7097362 2611:8001299 2510:Bibcode 2474:8703156 2415:3164530 2345:6531664 2252:2621010 2203:3399522 2163:9826323 2027:7181098 1978:4340604 1929:4064952 1835:3308472 1793:7 March 1754:7 March 1725:7 March 1692:7 March 1649:7 March 1606:7 March 1512:quinine 1492:AV node 1444:(ICD). 1406:aspirin 1183:hypoxia 1164:ectopic 1079:on the 872:or the 866:impulse 4078:J wave 3831:Atrial 3759:Atrial 3548:aortic 3524:mitral 3516:Valves 3462:valves 3314:Layers 3183:(SCAD) 3110:Curlie 3092:001101 2983:  2975:  2967:  2925:  2851:  2824:  2781:  2760:939001 2758:  2714:  2687:  2652:  2617:  2609:  2565:  2530:  2481:  2471:  2463:  2422:  2412:  2352:  2342:  2300:  2259:  2249:  2210:  2200:  2161:  2118:  2095:  2072:  2034:  2024:  1985:  1975:  1957:Lancet 1936:  1926:  1885:  1877:  1842:  1832:  1548:benign 1534:after 1097:anemia 996:atrium 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Index

Trigeminy
erythema
arrhythmia (disambiguation)

Ventricular fibrillation
electrocardiogram
Specialty
Cardiology
Symptoms
Palpitations
dizziness
lightheadedness
passing out
shortness of breath
chest pain
decreased level of consciousness
Complications
Stroke
heart failure
Extra beats
supraventricular tachycardias
ventricular arrhythmias
bradyarrhythmias
electrical conduction system of the heart
Diagnostic method
Electrocardiogram
Holter monitor
pacemaker
Emma's irregular heartbeat
media help

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