Ablation terminated atrial fibrillation left atrial atrial flutter. Medical search. Frequent questions

Atrial tachycardia is a supraventricular tachycardia (SVT) that does not require the atrioventricular (AV) junction, accessory pathways, or ventricular tissue for its initiation and maintenance. (medscape.com)
In addition to individuals with heart diseases, including congenital heart disease, atrial tachycardia may also occur in persons with structurally normal hearts. (medscape.com)
This 12-lead electrocardiogram demonstrates an atrial tachycardia at a rate of approximately 150 beats per minute. (medscape.com)
In clinical practice, three major types of atrial tachycardia are seen: focal atrial tachycardia, multifocal atrial tachycardia (MAT), and re-entrant atrial tachycardia. (medscape.com)
Focal atrial tachycardia arises from a localized atrial site and is characterized by regular, organized atrial activity with discrete P waves and, typically, an isoelectric segment between P waves. (medscape.com)
MAT is an irregular supraventricular tachycardia characterized by three distinct P-wave morphologies and/or patterns of atrial activation at different rates. (medscape.com)
Re-entrant atrial tachycardia is usually seen after cardiac surgery or catheter ablation with linear lesions that result in islets of scars. (medscape.com)
In patients with structurally normal hearts, atrial tachycardia is associated with a low mortality rate. (medscape.com)
Reentrant atrial tachycardia is not uncommon in patients with a history of a surgically repaired atrial septal defect. (medscape.com)
BACKGROUND Irrigated radiofrequency (RF) ablation can be insufficient to eliminate intramurally located septal atrial flutter (AFL) and ventricular tachycardia (VT) circuits. (inhibitorkit.com)
For patient education information, see the Heart Health Center , as well as Atrial Flutter , Arrhythmias (Heart Rhythm Disorders) , Stroke , Supraventricular Tachycardia (SVT, PSVT) , and Palpitations . (medscape.com)
After a mean follow-up of 1.8 years, only 38% of patients remained in normal sinus rhythm (NSR), 33% had experienced recurrence of AF, while the remaining 29% were found to have atrial tachycardia (AT). (afibbers.org)
* Paroxysmal Atrial Tachycardia - Now called "Supraventricular Tachycardia" (SVT) because the abnormal electrical impulse doesn't come from the Sinus Node, but from elsewhere in either the Atria or from the A-V Node (but not the Ventricles). (diagnosis123.com)
Open surgical ablation of ventricular tachycardia: Utility and feasibility of contemporary mapping and ablation tools. (ucdenver.edu)
Fifteen years later, Lown applied synchronized DC shocks to the heart to convert atrial fibrillation and ventricular tachycardia to normal sinus rhythm. (medscape.com)
Electrical cardioversion is much less effective in treating arrhythmia caused by increased automaticity (eg, digitalis-induced tachycardia, catecholamine-induced arrhythmia) since the mechanism of the arrhythmia remains after the arrhythmia is terminated and therefore is likely to recur. (medscape.com)
Contraindications include known digitalis toxicity-associated tachycardia, sinus tachycardia caused by various clinical conditions, and multifocal atrial tachycardia. (medscape.com)
The presence of late-potentials helps identify individuals at risk for developing life-threatening arrhythmias, such as ventricular tachycardia or ventricular fibrillation. (bcm.edu)
The usual rate is 160-240 beats/min and is moderately regular but less so than atrial tachycardia. (health.am)
No major heart rhythm changes (i.e., induction of extrasystoles, ventricular tachycardia or fibrillation) or pathological morphological changes (i.e. (biomedcentral.com)

Catheter ablation is a procedure that uses radio-frequency energy or other sources to terminate or modify a faulty electrical pathway from sections of the heart of those who are prone to developing cardiac arrhythmias such as atrial fibrillation, atrial flutter and Wolff-Parkinson-White syndrome. (wikipedia.org)
If not controlled, such arrhythmias increase the risk of ventricular fibrillation and sudden cardiac arrest. (wikipedia.org)
citation needed] Catheter ablation of most arrhythmias has a high success rate. (wikipedia.org)
CARL pioneered computational mapping of 'chaotic' heart rhythm disturbances (arrhythmias), targeting mechanistic drivers for atrial and ventricular fibrillation (AF, VF) using machine learning and computational models. (stanford.edu)
Specific support has been via grants HL70529 and HL162260 for ventricular arrhythmias, and HL103800, HL83359, HL122384, HL149134, and several SBIR grants for atrial arrhythmias. (stanford.edu)
It has been found that you have experienced or are susceptible to serious arrhythmias that may cause these symptoms or, if left untreated, may be fatal. (arrhythmiaawarenessacademy.com)
In 2008, Dr. Efimov founded Cardialen to develop low energy implantable electrotherapy of atrial and ventricular arrhythmias. (jove.com)

The ablation procedure can be classified by energy source: radiofrequency ablation and cryoablation. (wikipedia.org)
An average of 3.3±0.5 sites of localized reentry during VF were targeted for radiofrequency ablation (38.3±10.9 minutes) during sinus rhythm, rendering VF non-inducible with pacing. (stanford.edu)
Pulmonary Vein Stenosis and Pulmonary Hypertension Following a Catheter-Based Radiofrequency Ablation for Atrial Fibrillation: A Case Report. (stanford.edu)
PV stenosis is a rare but recognized complication of catheter-based radiofrequency ablation (RFA) for atrial fibrillation (AF). (stanford.edu)
Radiofrequency catheter ablation techniques are safe and effective as well, especially for patients with poor tolerance to drugs (see figure figure 3b radiofrequency ablation in WPW, as well as in the treatment of atrial flutter and fibrillation by identifying tract carrying the excitation impulse). (rjmatthewsmd.com)
Bipolar radiofrequency ablation creates different lesion characteristics compared to simultaneous unipolar ablation. (ucdenver.edu)
An echo performed from your esophagus is very important in looking for blood clots if you have atrial fibrillation or atrial flutter and a cardioversion and/or radiofrequency ablation procedure is planned. (bcm.edu)

After 12 months, participants receiving catheter ablation were more likely to be free of atrial fibrillation, and less likely to need cardioversion. (wikipedia.org)
Atrial flutter in an unstable patient should be treated immediately with synchronized cardioversion. (medscape.com)
Persistent atrial fibrillation (AF) is defined as episodes lasting longer than seven days but amenable to cardioversion to normal sinus rhythm. (afibbers.org)
Following ablation of other targets, AF was terminated in 25 patients (27%), while the remaining 68 patients (73%) had their arrhythmia terminated by cardioversion. (afibbers.org)
Internal cardioversion for atrial fibrillation is used in patients who are resistant to external cardioversion or inadvertently induced during an electrophysiologic study. (medscape.com)
Cardioversion should occur before placement of an atrial defibrillator. (medscape.com)
In addition, because patients with atrial fibrillation are at risk for developing clots in the left atrium, predisposing them to increased stroke risk, patients who are not anticoagulated should not undergo cardioversion without a transesophageal echo that can assess the presence of a left atrial thrombus. (medscape.com)

The rate is usually regular, but it may be irregular in rapid atrial tachycardias with variable AV conduction and in MAT. (medscape.com)
This block may also be variable and cause atrial flutter to appear as an irregular rhythm. (medscape.com)
Atrial Fibrillation(AF) is a cardiovascular disorder that is caused by irregular heartbeat of atria chambers. (skylabs.io)
AF is an atrial rate of greater than 300 bpm with an irregular transmission of electrical impulses through to the ventricles, causing a fast, irregular heart beat. (orlandocvi.com)

Because the AV node cannot conduct at the same rate as the atrial activity, some form of conduction block is often seen, typically 2:1 (most common), 3:1, or 4:1. (medscape.com)
The purpose of this clinical study is to test the hypothesis that market released Cardiac Resynchronization Therapy (CRT) devices which contain the AdaptivCRT® (aCRT) algorithm have a superior outcome compared to standard CRT devices in CRT indicated patients with normal atrio-ventricular (AV) conduction and left bundle branch block (LBBB). (stanford.edu)
Atrial fibrillation / atrial flutter with variable AV conduction AND accessory pathway (e.g. (wikem.org)
Those that involve the AV node can be terminated by slowing conduction through the AV node . (wikidoc.org)

For non-paroxysmal atrial fibrillation, a 2016 systematic review compared catheter ablation to heart rhythm drugs. (wikipedia.org)
However, the evidence quality ranged from moderate to very low A 2006 study, including both paroxysmal and non-paroxysmal atrial fibrillation, found that the success rates are 28% for single procedures. (wikipedia.org)
The investigators hypothesized that a combination of circumferential ablation with high-frequency-stimulation-identified GP ablation is superior to conventional circumferential ablation for the prevention of recurrences of paroxysmal atrial fibrillation (AF). (novoclinica.com)

Uncovering a unique path: Antidromic AVRT utilizing a left anteroseptal Mahaim-like accessory pathway. (ucdenver.edu)

Since the seminal report by Dr. Michel Haïssaguerre, catheter-based ablation for atrial fibrillation (AF) has evolved and been highly effective for the elimination of atrial fibrillation (AF) compared to antiarrhythmic medications. (jafib.com)

The first procedure included anatomically-guided pulmonary vein isolation (PVI), electrogram-based ablation in the left atrium and coronary sinus, left atrium linear ablation, superior vena cava (SVC) isolation, and cavotricuspid isthmus linear ablation (right atrial flutter ablation). (afibbers.org)
Increased incidence of cavotricuspid isthmus atrial flutter following slow pathway ablation. (ucdenver.edu)

Catheter ablation may be recommended for a recurrent or persistent arrhythmia resulting in symptoms or other dysfunction. (wikipedia.org)
The chronic and recurrent ones are related to underlying structural causes like atrial disease or mitral disease. (rjmatthewsmd.com)
Paroxysmal (intermittent) atrial fibrillation: recurrent (2 or more) episodes, spontaneously terminates and converts back to normal sinus rhythm within a week, lasting for less than 24 hours, typically related to a reversible cause. (orlandocvi.com)

Persistent AF is notoriously more difficult to eliminate than is paroxysmal (intermittent) AF because the foci precipitating the fibrillation are not exclusively or almost exclusively located in the pulmonary veins as is the case in paroxysmal AF. (afibbers.org)
In other words, if an afibber develops the persistent variety, an early ablation would be in order. (afibbers.org)
The pulmonary veins were isolated in all patients, but this part of the procedure only terminated the AF in two patients, clearly indicating that the triggers for persistent AF are not primarily located in the pulmonary veins. (afibbers.org)
Twenty-eight of the 31 patients who had recurrence of AF (21 persistent and 7 paroxysmal) underwent a second procedure involving re-isolation of the pulmonary veins and electrogram-based ablation. (afibbers.org)
Patients who had only had their persistent AF for a relatively short time were significantly more likely to have a successful outcome as were those whose arrhythmia stopped on its own during the first ablation. (afibbers.org)
They also point out that patients with shorter duration of persistent AF are more likely to have a successful left atrial ablation. (afibbers.org)
Clinical characteristics of patients with persistent atrial fibrillation successfully treated by left atrial ablation. (afibbers.org)
However, due to high recurrence rates, especially in patients with persistent AF, PV antral isolation, complemented by linear ablation, autonomic modulation, and ablation of complex fractionated electrograms, have been attempted to increase the odds of success. (jafib.com)
We performed a prospective randomized trial by assigning 92 patients with persistent AF in 1:1 ratio to pulmonary-vein isolation plus ablation of electrograms showing complex fractionated activity (45 patients), or pulmonary-vein isolation plus additional linear ablation across the left atrial roof and mitral valve isthmus (47 patients). (jafib.com)
Among patients with persistent atrial fibrillation, we found no difference in maintenance of sinus rhythm in either linear ablation or ablation of complex fractionated electrograms was performed in addition to pulmonary vein isolation in short- and long-term follow-up. (jafib.com)
However, due to a relatively high recurrence rate, especially in patients with persistent AF, other ablation techniques have been developed, involving a PV antral isolation, often complemented by ablation lines, and ablation of complex fractionated atrial electrograms. (jafib.com)
Ninety-two patients with symptomatic persistent AF were randomized to PVI+ additional linear ablation group vs. PVI + physiology guided CFAE ablation. (jafib.com)
Persistent atrial fibrillation: occurs in episodes, does not spontaneously convert back to sinus rhythm and is unrelated to a reversible cause. (orlandocvi.com)

At a 12-month follow-up, 9 (23%) patients had AF recurrence in the linear ablation and 8 (21%) patients in the CFAE groups. (jafib.com)
At a mean follow-up duration of 59±36 months, 48.3% of patients in the linear ablation group and 44.6% of patients in the CFAE group were free from AF (p=0.403). (jafib.com)
The overall procedure time and radiation exposure were higher in the PVI+linear ablation group. (jafib.com)
Furthermore, several randomized studies have produced conflicting results regarding the benefit of adding linear ablation lines, CFAE ablation, both or none. (jafib.com)
Hence we designed a prospective study to establish freedom from AF with combined wide area circumferential ablation and linear ablation, vs. combined wide area circumferential ablation and CFAE ablation in addition to antiarrhythmic therapy. (jafib.com)
We prospectively randomized patients undergoing pulmonary vein isolation to either additional linear ablation, versus the adjunctive ablation targeting fractionated or high-frequency electrograms ablation for the treatment of AF. (jafib.com)

These include chronic left-sided congestive heart failure , pulmonary embolus, valvular heart disease (especially mitral and tricuspid diseases), and septal defects. (medscape.com)
18 years old, had previous AF ablation or cardiac surgery procedure, valvular AF, congenital heart disease, previous atrioventricular node ablation, permanent pacing or no follow-up data. (biomedcentral.com)
Atrial fibrillation (AF) has strong associations with other cardiovascular diseases, such as heart failure, coronary artery disease (CAD), valvular heart disease, diabetes mellitus, and hypertension. (medscape.com)

I went for a more serious anticoagulant when the episodes did not self terminate after 15/30minutes. (patient.info)

For atrial flutter, single procedure success is 88% to 95% (95% Confidence Interval) and multiple procedure success is 95% to 99% (95% Confidence Interval). (wikipedia.org)
citation needed] Catheter ablation procedure involves advancing several flexible catheters into the patient's blood vessels, usually either in the femoral vein, internal jugular vein, or subclavian vein. (wikipedia.org)
The primary endpoint was freedom from any documented recurrence of atrial fibrillation after a single ablation procedure. (jafib.com)
In the present study, we sought to determine the pattern of LA performance change immediately and short-term after AF ablation and whether such alternation of LA function is related the procedure outcome at long-term follow-up. (biomedcentral.com)
In this study, however, 26% of patients subjected to GP ablation alone without circumferential lesions were free of AF-recurrence up to one year after the ablation procedure. (novoclinica.com)

The investigators are, therefore, conducting a randomized study comparing conventional circumferential ablation to a combination of circumferential ablation plus specific right and left atrial GP ablation in patients with drug-refractory paroxysmal AF. (novoclinica.com)
Patients are subjected to conventional PV isolation through circumferential ablation 1-2 cm from the PV ostium. (novoclinica.com)
The area encircled by circumferential ablation will be calculated using the software provided by the CARTO system. (novoclinica.com)

Voltage at the biopsy site (Vbiopsy), global left atrial voltage (VGLA), and the proportion of points with fractionated electrograms defined as ≥5 deflections in each electrogram (%Fractionated EGM) were evaluated. (bvsalud.org)

E. The chronic or long standing PSVT'S like atrial flutter or fibrillation do not revert without treatment,often fail to revert even with attempted treatment and if reverted will often recur despite therapy. (rjmatthewsmd.com)

13 This recommendation is based on several studies that showed effective heart rate control and improvement in symptoms with AVN ablation and permanent pacemaker implantation in selected patients with AF. (ahrq.gov)
Symptoms of atrial fibrillation such as lightheadedness or dizziness may be felt. (orlandocvi.com)
If you experience symptoms of atrial fibrillation, call your physician. (orlandocvi.com)

Extra Beats - They can originate in the Atria ("Premature Atrial Contractions" - PACs) or the Ventricles ("Premature Ventricular Contractions" - PVCs). (diagnosis123.com)
Background - Refractory ventricular fibrillation (VF) is a challenging clinical entity, for which ablation of triggering premature ventricular complexes (PVCs) is described. (stanford.edu)

Atrial flutter is the second most common tachyarrhythmia, after atrial fibrillation . (medscape.com)
The primary endpoint was atrial tachyarrhythmia recurrence after ablation. (biomedcentral.com)

If pharmacological therapy is insufficient or associated with side effects, the 2006 ACC/AHA/ESC Guidelines recommend ablation of the atrioventricular node (AVN) in conjunction with permanent pacemaker implantation to control heart rate. (ahrq.gov)

Young people with AF with paroxysmal, or intermittent, AF therefore have an increased chance of success with an ablation since their heart has not undergone atrial remodeling yet. (wikipedia.org)
Continuous ablation improves lesion maturation compared with intermittent ablation strategies. (ucdenver.edu)

Re-entrant atrial tachycardias are usually incessant and may lead to cardiomyopathy. (medscape.com)
Tiered-therapy ICDs also provide antibradycardia pacing and antitachycardia pacing (to terminate responsive atrial or ventricular tachycardias) and store intracardiac electrograms. (msdmanuals.com)

Peak left atrial contraction strain (PACS) and left atrial emptying fraction (LAEF) were evaluated during sinus rhythm and compared across the three time points. (biomedcentral.com)
PACS and LAEF initially decreased 1-day following ablation but partially recovered within 3 months in PAF patients, with a similar trend in the PerAF patients. (biomedcentral.com)

One reason for this may be that once the heart has undergone atrial remodeling as in the case of chronic atrial fibrillation patients, largely 50 and older, it is much more difficult to correct the 'bad' electrical pathways. (wikipedia.org)

Sudden death occurs more frequently (presumably as a result of ventricular fibrillation ) when ventricular premature beats occur in the presence of organic heart disease but not in individuals with no known cardiac disease. (health.am)

One type of catheter ablation is pulmonary vein isolation, where the ablation is done in the left atrium in the area where the 4 pulmonary veins connect. (wikipedia.org)
Pulmonary vein isolation remains the cornerstone of atrial fibrillation (AF) ablation. (jafib.com)
The investigators have recently shown that anatomic ganglionated plexi (GP) ablation is inferior to circumferential pulmonary vein (PV) ablation for the treatment of paroxysmal AF. (novoclinica.com)

3 ]. PV isolation has been the cornerstone of AF ablation. (jafib.com)
We also aimed at comparing these two approaches with a combination of GP ablation and PV isolation. (novoclinica.com)
Patients are subjected to specific, HF stimulation-guided and anatomic ablation of the main right and left atrial GP followed by PV isolation. (novoclinica.com)

The diagnosis of atrial fibrillation will be based on your history, physical examination, and certain tests. (orlandocvi.com)

1] Beck was the first physician to use DC defibrillation on a human to treat ventricular fibrillation on a 14-year-old during cardiac surgery in 1947. (medscape.com)

In addition, Atrial Fibrillation can occur in people who do not have structural abnormalities or underlying diseases of the heart. (skylabs.io)
How does atrial fibrillation occur? (orlandocvi.com)
Atrial fibrillation can occur in different patterns. (orlandocvi.com)
Atrial fibrillation may occur after open heart surgery or substance abuse. (orlandocvi.com)

Fuher AN, Borne R, Cunningham J. Diagnosing Atypical Flutter in the Post-atrial Fibrillation Ablation Patient: A Case Report. (ucdenver.edu)
The longer the AF remains untreated in patients, the more likely that the patient will suffer from risks that are associated with Atrial Fibrillation. (skylabs.io)

We retrospectively reviewed patients who underwent AF ablation between 2009 and 2011 and underwent transthoracic echocardiography before ablation, 1-day and 3-month after ablation. (biomedcentral.com)

Conclusions - VESA is associated with a reduction in the combined endpoint compared with the non-ablation reference group. (stanford.edu)

In 1997, a low-energy, impedance-compensating biphasic waveform was evaluated for atrial and ventricular arrhythmia management. (medscape.com)

ECG of atrial fibrillation (top) and normal sinus rhythm (bottom). (wikem.org)

In the past 2 years, a number of landmark clinical trials have been published which further our understanding and clinical management of patients with atrial fibrillation (AF). (romanianjournalcardiology.ro)

The first of these trials, published in 2009, tested the hypothesis that the ARB valsartan could reduce the recurrence of AF in patients with underlying cardiovascular disease, diabetes or left atrial enlargement and a history of documented AF, in addition to established treatments.2 A total of 1442 patients were enrolled into the study-722 assigned to the valsartan group (target dose 320 mg) and 720 to the placebo group. (romanianjournalcardiology.ro)

Atrial rates are generally between 240 and 360 beats per minute (bpm) without medications. (medscape.com)
Atrial fibrillation always has some degree of atrial-ventricular (AV) block with a 2:1 pattern meaning the rate of the ventricles is usually 150 beats per minute while the atria beat at 300 beats per minute. (orlandocvi.com)
A 12-lead ECG showing atrial fibrillation at approximately 132 beats per minute. (wikem.org)

Further ablation in the right atrium added another five patients to the AF-free group. (afibbers.org)
The researchers also observed substantial benefits of having an extensive right atrium ablation. (afibbers.org)
The researchers speculate that the fibrillatory substrate progressively extends from the left atrium to the right atrium over time, and conclude that right atrial ablation may improve outcome in patients whose left atrial ablation was unsuccessful. (afibbers.org)

Atrial Fibrillation involves having disorganized electrical signals, skipping beats and rapid beating of atrial chambers. (skylabs.io)
In atrial fibrillation, chaotic electrical signals travel across the heart in an abnormal way. (orlandocvi.com)

Average left ventricular ejection fraction was 60%, and 85% of participants had lone AF (no underlying heart disease). (afibbers.org)

If Atrial Fibrillation is not properly diagnosed or treated, it could cause a severe stroke. (skylabs.io)

Patients with symptomatic and drug-refractory AF who underwent first time AF ablation at Mayo Clinic (Rochester, MN) between April 2009 and May 2011 were included. (biomedcentral.com)

The anatomic areas of GP are identified in the right and left atrium. (novoclinica.com)

Defibrillation refers to an unsynchronized discharge of energy and is only recommended for ventricular fibrillation (VF). (medscape.com)

Anatomy22

Organisms1

Diseases48

Chemicals and Drugs22

Analytical, Diagnostic and Therapeutic Techniques and Equipment66

Phenomena and Processes16

Disciplines and Occupations1

Information Science4

Health Care26

Tachycardia20

Arrhythmias7

Radiofrequency7

Cardioversion7

Irregular4

Conduction4

Paroxysmal atrial fibri3

Accessory pathway1

Catheter-based1

Cavotricuspid isthmus2

Recurrent3

Persistent13

Linear ablation6

Valvular3

Episodes1

Procedure5

Circumferential ablation3

Fractionated electrograms1

Recur1

Symptoms3

PVCs2

Tachyarrhythmia2

Atrioventricular node1

Intermittent2

Tachycardias2

PACs2

Chronic1

Ventricular premature1

Pulmonary3

Isolation3

Diagnosis1

Cardiac surgery1

Occur4

Patient2

Patients who underwent1

Endpoint1

Biphasic waveform1

Normal sinus1

Clinical1

Enlargement1

Beats per mi3

Right atrium3

Signals2

Ejection fraction1

Stroke1

Drug-refractory1

Atrium1

Defibrillation1