Patients accessory atrioventricular bundle. Medical search. Frequent questions

Wolff-Parkinson-White syndrome (WPWS) is a disorder due to a specific type of problem with the electrical system of the heart involving an accessory pathway able to conduct electrical current between the atria and the ventricles, thus bypassing the atrioventricular node. (wikipedia.org)
From there, the electrical stimulus is transmitted via internodal pathways to the atrioventricular (AV) node. (wikipedia.org)
After a brief delay at the AV node, the stimulus travels through the bundle of His to the left and right bundle branches and then to the Purkinje fibers and the endocardium at the apex of the heart, then finally to the ventricular myocardium. (wikipedia.org)
citation needed] Individuals with WPW have an accessory pathway that communicates between the atria and the ventricles, in addition to the AV node. (wikipedia.org)
This accessory pathway does not share the rate-slowing properties of the AV node and may conduct electrical activity at a significantly higher rate than the AV node. (wikipedia.org)
Because of its selective class III antiarrhythmic effect, dofetilide has no effect on atrioventricular conduction or sinus node function. (bmj.com)
In normal cardiac conduction, the atria and ventricles are electrically separate from one another, and electrical impulses must pass through the atrioventricular (AV) node and His-Purkinje system. (picmonic.com)
Patients with WPW and other "pre-excitation" syndromes have alternative, or "accessory" pathways which allow electricity to flow directly from the atria to the ventricles, bypassing the AV node and leading to "premature" activation of the ventricles. (picmonic.com)
In AVRT, the electrical signal passes from the AV node to the ventricles in the normal fashion but subsequently passes back into the atria through the bundle of Kent - hence the name, "reentrant. (picmonic.com)
Avoid AV node blocking agents like adenosine and beta blockers as these agents further promote conduction through the accessory pathway and increase the risk of ventricular fibrillation. (picmonic.com)
This can lead to an Atrioventricular reentrant tachycardia which may pass anterogradely or retrogradely through the AV node and accessory pathway. (abcmedicalnotes.com)
Pre-excitation means that there is an accessory pathway between the atria and ventricles and the electrical impulse can therefore bypass the AV node. (wchcmr.org)
The electrical signal then travels to the ventricles via the atrioventricular (AV) node, resulting in ventricular contraction. (facty.com)
A type of atrial arrhythmia characterized by atrial rates of between 240 and 400 beats per minute and some degree of atrioventricular node conduction block. (nih.gov)
A specialized cluster of cells called the atrioventricular node conducts electrical impulses from the heart's upper chambers (the atria) to the lower chambers (the ventricles). (nih.gov)
Impulses move through the atrioventricular node during each heartbeat, stimulating the ventricles to contract slightly later than the atria. (nih.gov)
n\nPeople with Wolff-Parkinson-White syndrome are born with an extra connection in the heart, called an accessory pathway, that allows electrical signals to bypass the atrioventricular node and move from the atria to the ventricles faster than usual. (nih.gov)
The signal then moves down to a second node between the atria and ventricles called the atrioventricular (AV) node. (holisticly.com)

Reentrant Supraventricular Tachycardias (SVT) Including Wolff-Parkinson-White Syndrome Reentrant supraventricular tachycardias (SVT) involve reentrant pathways with a component above the bifurcation of the His bundle. (msdmanuals.com)
and focal idiopathic ventricular tachycardia (VT-right ventricular outflow tract, left septal, or bundle branch reentrant VT). (msdmanuals.com)
Reentrant atrial tachycardia is not uncommon in patients with a history of a surgically repaired atrial septal defect. (medscape.com)
An unusual case of non-reentrant atrioventricular nodal tachycardia. (jefferson.edu)

Of the 108 patients studied 77 (71%) were treated only pharmacologically, in 4 (3.7) children RF catheter ablation was done, in 8 (7.4%) patients septal myectomy was performed. (czytelniamedyczna.pl)
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)
Patients presenting with pre-excited AF once managed should be referred for definitive treatment which is radiofrequency catheter ablation of the accessory pathway, not only to eliminate symptoms of palpitations but also to eliminate the risk of sudden death. (abcmedicalnotes.com)
Radiofrequency catheter ablation is generally performed after an initial mapping procedure where the location of the arrhythmogenic sites and accessory pathways are determined. (justia.com)
The successful treatment of supraventricular and ventricular tachycardias by radiofrequency catheter ablation of accessory atrioventricular pathways is described in Kuck et al. (justia.com)

[ 2 ] The patient was a 19-year-old laborer who presented with dyspnea and palpitations and was noted to be profoundly cyanotic. (medscape.com)
Patients have sudden episodes of palpitations that begin and. (msdmanuals.com)
This can present with palpitations or syncope from an atrioventricular reciprocating tachycardia or rarely sudden death secondary to ventricular fibrillation from rapid conduction of atrial fibrillation across the accessory pathway. (escardio.org)
Our fictional patient case in Morning Report is a woman with two episodes in the past month of palpitations leading to syncope. (wchcmr.org)
Our patient was having recordings of HR in the 170s on her Fit Bit device and episodes of palpitations were leading to syncope. (wchcmr.org)

Patients with arrhythmias, however, must be treated. (picmonic.com)
Patients with WPW pattern have ECG findings but do NOT have symptomatic arrhythmias. (picmonic.com)
In contrast, patients with WPW syndrome have both classic WPW findings on ECG and symptomatic arrhythmias. (picmonic.com)
However, certain asymptomatic subgroups such as pediatric patients and those with congenital heart defects or cardiomyopathies may be considered for treatment as they are at increased risk for arrhythmias in the future. (picmonic.com)
contents: A phase of potentially direct arrhythmias derived from atrioventricular Plaque by longer-term order through the surface insertion. (worldclassbows.com)
This is because these patients are at particularly high risk of developing life-threatening arrhythmias. (ecgwaves.com)

The presence of arrhythmogenic sites or accessory pathways can bypass or short circuit the normal pathways, potentially resulting in very rapid heart contractions, referred to as tachycardias. (justia.com)

AVNRT, AVRT (WPW syndrome) and other conditions involving an accessory pathway. (ecgwaves.com)

In patients with multifocal atrial tachycardia (MAT), the history may disclose an underlying illness that is causing the tachycardia. (medscape.com)

Supraventricular tachycardias (SPVT) usually have narrow QRS complexes, but they may be wide because of aberrant counduction through the intraventricular conducting tissue, participation of a bypass tract in the intraventricular depolarization pattern,or in the presence of a coexiting bundle branch block. (rjmatthewsmd.com)
Treatment related side effects were reported in four patients, one with a new sustained incessant supraventricular tachycardia. (bmj.com)
Patients with suspected supraventricular or ventricular tachyarrhythmias, or both, were referred for a routine electrophysiological evaluation. (bmj.com)
In a patient with supraventricular tachycardia (SVT), the presence of warm-up phenomenon on an electrocardiogram (eg, on Holter monitoring) suggests that the SVT is atrial tachycardia. (medscape.com)
Dual chamber sequential pacing is contraindicated in patients with chronic or persistent supraventricular tachycardias, including atrial fibrillation or flutter. (medtronic.com)
Of note, supraventricular tachcardia with "aberrancy" refers to usually SVT with a bundle branch block. (wchcmr.org)
Safety of Adenosine for the Treatment of Supraventricular Tachycardia in Hospitalized Patients with COVID-19 Pneumonia. (jefferson.edu)
Prophylaxis and treatment of symptomatic paroxysmal supraventricular tachyarrhythmia in patients without evidence of structural heart disease. (ecgwaves.com)

For instance, in the example above, if an individual had an atrial rate of 300 beats per minute, the accessory bundle may conduct all the electrical impulses from the atria to the ventricles, causing the ventricles to contract at 300 beats per minute. (wikipedia.org)
This accessory pathway, the Bundle of Kent, creates a shortcut from the atria to the ventricles, resulting in faster electrical transmission. (facty.com)

Few data are available worldwide on the long-term follow-up of patients with Wolff-Parkinson-White syndrome treated with transcatheter radiofrequency ablation. (hungarica.eu)
The aim of this paper is to report the case of our first patient treated with transcatheter radiofrequency ablation in Hungary and her 25 years of follow-up. (hungarica.eu)
Of particular interest to the present invention are radiofrequency ablation protocols which have proven to be highly effective in tachycardia treatment while exposing the patient to minimum side effects and risks. (justia.com)

Paroxysmal atrial fibrillation in patients with severe symptoms, provided that first-line therapies have failed and the patient does not have structural heart disease or reduced left ventricular function. (ecgwaves.com)

A high incidence of atrial and ventricular arrhythmia, including an association with Wolff-Parkinson-White Syndrome , occurs in these patients. (medscape.com)
Connect with other caregivers and patients with Wolff-Parkinson-White syndrome and get the support you need. (rareguru.com)
In people with Wolff-Parkinson-White syndrome, there is an extra, or accessory, pathway that may cause a very rapid heart rate. (rareguru.com)
The accessory pathway in Wolff-Parkinson-White syndrome is a structural defect of the heart that occurs as the organ forms in utero. (facty.com)
If a doctor suspects Wolff-Parkinson-White syndrome due to symptoms or risk factors, he or she will first perform a thorough physical exam and patient history. (facty.com)
n\nComplications of Wolff-Parkinson-White syndrome can occur at any age, although some individuals born with an accessory pathway in the heart never experience any health problems associated with the condition. (nih.gov)

In 1930, Wolff, Parkinson, and White described a series of young patients who had a bundle branch block pattern on electrocardiography (ECG), a short PR interval, and paroxysms of tachycardia. (rjmatthewsmd.com)
This in consistent with right bundle branch block pattern, with loss of the normal initial small r wave (pathological Q waves). (ecgguru.com)
Preexisting AV block, bundle branch block or fascicular block may become worse. (ecgwaves.com)

In patients with frequent or incessant tachycardias, a decline in effort tolerance and symptoms of heart failure may represent early manifestations of tachycardia-induced cardiomyopathy. (medscape.com)
However, in rapid atrial tachycardias with variable atrioventricular (AV) conduction and in MAT, the pulse may be irregular. (medscape.com)
The present invention is concerned with the treatment of tachycardias which are frequently caused by the presence of an "arrhythmogenic site" or "accessory atrioventricular pathway" close to the inner surface of one of the chambers of the heart. (justia.com)

Patients demographics, clinical symptoms, treatment strategy as well as the results of echocardiography, ECG, 24 h Holter ECG, exercise test were analyzed. (czytelniamedyczna.pl)
The heart transplant was qualified in 6 (5.5%) patients who had symptoms of progressive heart failure. (czytelniamedyczna.pl)
While drugs may be the treatment of choice for many patients, they only mask the symptoms and do not cure the underlying cause. (justia.com)
I looked to see what the patients symptoms were, and she was a 30-something woman with symptoms listed as "chest burning. (blogspot.com)
Dizziness can be difficult to assess in the ED given the vast range of etiologies and varying ways patients interpret their symptoms. (traumayellow.com)
Typically, patients with peripheral vertigo appear to have an acute change and may be very ill appearing, with nausea and vomiting and severe vertigo symptoms. (traumayellow.com)
Patients presenting with symptoms of Bells Palsy should have a full history and physical examination to identify facial paralysis and possible causes, including evaluated for lesions of the TM concerning for Ramsay Hunt Syndrome. (traumayellow.com)

The underlying mechanism involves an accessory electrical conduction pathway between the atria and the ventricles. (wikipedia.org)
The bundle of Kent is an abnormal extra or accessory conduction pathway between the atria and ventricles that is present in a small percentage (between 0.1 and 0.3%) of the general population. (wikipedia.org)
In 1943, the existence of an accessory connection between atria and ventricles was confirmed, which is about 50 years after Kent's description of myocardial fibers that were believed to conduct from atria to ventricle. (rjmatthewsmd.com)
In WPW, an accessory conduction pathway exists which directly connects the atria and ventricles. (picmonic.com)
The accessory pathway may also transmit electrical impulses abnormally from the ventricles back to the atria. (nih.gov)
Once the ventricles are full of blood, the signal travels down the ventricles on a pathway called the bundle of His. (holisticly.com)

In patients with symptomatic left ventricular outflow tract obstruction refractory to medical therapy a surgical myectomy should be considered. (czytelniamedyczna.pl)

Those that have WPW syndrome have ventricular pre-excitation caused by an accessory conduction pathway. (picmonic.com)

In some cases, the combination of an accessory pathway and abnormal heart rhythms can trigger ventricular fibrillation, a leading cause of sudden cardiac death. (wikipedia.org)
While class I antiarrhythmic drugs are effective in treating this form of tachycardia, there is a reluctance to use these agents, especially in patients with structural heart disease, because of potential proarrhythmia or undesirable side effects-as seen in the cardiac arrhythmia suppression trial (CAST). (bmj.com)
See device manuals for the accepted patient conditions warranting chronic cardiac pacing. (medtronic.com)
Radiofrequency energy is then applied through the electrode to the cardiac tissue in order to ablate a region of the tissue which forms part of the accessory pathway. (justia.com)
While such power supplies are workable, they do not provide power control of a type which is best used with cardiac tissue ablation and can subject the patient to spurious ground potentials. (justia.com)
Ullah W, Ruge M, Hajduczok AG, Kochar K, Frisch DR, Pavri BB, Alvarez R, Rajapreyar IN, Brailovsky Y. Adverse outcomes of atrial fibrillation ablation in heart failure patients with and without cardiac amyloidosis: a Nationwide Readmissions Database analysis (2015-2019). (jefferson.edu)
PATIENT OUTCOME The patient was transported to a cardiac center, where he received angioplasty in the cath lab. (ecgguru.com)

Additionally, not all patients with emergency conditions will present with obvious focal deficits. (traumayellow.com)

Patients with WPW typically have a widened QRS interval of >0.12 seconds. (picmonic.com)
SVT's originate in the atria and are typically caused by an accessory pathway. (justia.com)

Patients should avoid sources of magnetic and electromagnetic radiation to avoid possible underdetection, inappropriate sensing and/or therapy delivery, tissue damage, induction of an arrhythmia, device electrical reset or device damage. (medtronic.com)
240 bpm in cats) and require atrial or atrioventricular junctional tissue for its initiation and maintenance. (vin.com)
Surgical and catheter-based treatments, in contrast, will actually cure the problem, usually by ablating the abnormal arrhythmogenic tissue or accessory pathway responsible for the tachycardia. (justia.com)
By successfully destroying that tissue, the accessory pathway or arrhythmogenic site is destroyed so that the abnormal signalling patterns responsible for the tachycardia will no longer occur. (justia.com)

Some patients can display a WPW pattern but not have symptomatic WPW syndrome. (picmonic.com)

When there is a disturbance in the normal conduction through the fast pathway, the slow pathway may be activated to conduct the excitation wave to the bundle of His, as well as retrograde back to the fast one, and then back again down the slow pathway continuously to produce the PSVT (see Figure 1). (rjmatthewsmd.com)
Dofetilide increased the atrial and ventricular effective refractory periods, as well as the antegrade and retrograde effective refractory period of the accessory pathway. (bmj.com)

WPW - there is an abnormal electrical connection between atrium and ventricle (e.g. bundle of Kent) - this is called an accessory pathway. (abcmedicalnotes.com)

IN WPW an accessory pathway that only conducts retrogradely (i.e. no resting ECG delta wave) is called a CONCEALED pathway and those with antegrade conduction where the delta wave is obvious is called a MANIFEST pathway. (abcmedicalnotes.com)

This accessory pathway is known as the bundle of Kent. (wikipedia.org)

The HINTS rule outperforms ABCD2 for stroke diagnosis in the ED when performed by qualified practitioners in patients with Acute Vestibular Syndrome. (traumayellow.com)

Sugie et al reviewed the clinical features of 38 patients with genetically confirmed Danon disease. (medscape.com)
Over 100 free commonly used clinical formulas and calculator tools to help diagnose, treat, prevent, and determine prognosis of patients at point of care. (guidelinecentral.com)
Identify clinical preventive services that are appropriate for your patients. (guidelinecentral.com)
A clinical decision making rule (HINTS) can help to more rapidly identify stroke patients to initiate acute therapies faster. (traumayellow.com)
They believe in cardiology treatment differences and simple patients clinical as proper failure and guide. (worldclassbows.com)

The accessory pathway may produce a rapid heart rate or arrhythmia, an irregular heartbeat. (facty.com)
organization: A signal lining Effector that has a patient IV anti-arrhythmia Psychology. (worldclassbows.com)

Ventricular depolarization starts earlier than expected (it starts where the accessory pathway inserts in the ventricular tachycardia). (wchcmr.org)

Asymptomatic patients who have the ECG pattern but are otherwise healthy generally do not require treatment. (picmonic.com)
These patients are asymptomatic and usually not treated. (picmonic.com)

Blood pressure may be low in patients presenting with fatigue, lightheadedness, or presyncope. (medscape.com)

Depending upon comorbid conditions or general health status, the patient may be hemodynamically unstable. (medscape.com)

Patients with MAT frequently have structural heart disease, mainly coronary artery disease and valvular heart disease, often in conjunction with COPD. (medscape.com)
Coronary CT angiography (CCTA) is revolutionizing the noninvasive assessment of patients with suspected coronary artery disease (CAD). (cardiologyonline.com)
Direct coronary stenting compared with stenting after predilatation is feasible, safe, and more cost-effective in selected patients: evidence to date indicating similar late outcomes. (lilavatihospital.com)

In 1930, Wolff, Parkinson, and White described a series of young patients who experienced paroxysms of tachycardia and had characteristic abnormalities on electrocardiography (ECG). (medscape.com)

They originate above the bifurcation of the bundle of His. (rjmatthewsmd.com)

Most patients have an atrial septal defect or a patent foramen ovale, which allows predominant right-to-left shunting at the atrial level. (medscape.com)

This right ventricular angiogram shows a patient with transposition of the great arteries. (medscape.com)

Antitachycardia pacing (ATP) therapy is contraindicated in patients with an accessory antegrade pathway. (medtronic.com)

Anatomy5

Diseases4

Chemicals and Drugs1

Analytical, Diagnostic and Therapeutic Techniques and Equipment1

Psychiatry and Psychology1

Node18

Reentrant4

Catheter ablation5

Palpitations5

Arrhythmias6

Pathways1

AVRT1

Multifocal atrial tach1

Supraventricular8

Atria to the ventricles2

Radiofrequency ablation3

Paroxysmal1

Wolff-Parkinso6

Branch3

Tachycardias3

Symptoms7

Ventricles6

Tract1

Conduction pathway1

Cardiac7

Focal1

Typically2

Tissue4

Symptomatic1

Retrograde2

Abnormal1

Conducts1

Kent1

Syndrome1

Clinical5

Arrhythmia2

Depolarization1

Asymptomatic2

Presyncope1

Hemodynamically unstable1

Coronary3

Electrocardiography1

Bifurcation1

Atrial septal1

Right ventricular1

Antegrade1