• 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)
  • 5. Bolognesi M, Bolognesi D. A prominent crista terminalis associated with atrial septal aneurysm that mimics right atrial mass leading to atrial arrhythmias: a case report. (radiopaedia.org)
  • Treatment of ventricular arrhythmias, such as sustained ventricular tachycardia. (pediatriconcall.com)
  • This arrhythmia, which is also known as ectopic atrial tachycardia or automatic atrial tachycardia, has a high association with tachycardia-induced cardiomyopathy. (medscape.com)
  • Three options are available for long-term treatment of patients with atrial ectopic tachycardia: medication to suppress the arrhythmia or control the ventricular response, catheter ablation, or, uncommonly, surgery (see Treatment ). (medscape.com)
  • Occasionally, mycoplasmal or viral infections, such as respiratory syncytial virus , may trigger this arrhythmia, although more complex atrial tachycardias, such as chaotic atrial tachycardia, are more frequently found in this scenario. (medscape.com)
  • Because PVs was known to induce atrial arrhythmia through the enhancement of triggered activity, it is possible that NO may play a critical role in the PV arrhythmogenic activity. (biomedcentral.com)
  • 2 dimensional transthoracic apical 4-chamber view showing the atrial septal defect, the fibrous band and the dilated right atrium and ventricle. (ispub.com)
  • It is an AV re-entry tachycardia (described as a long R-P tachycardia) with a postero-septal accessory pathway. (thebluntdissection.org)
  • Congenital heart disease: primum atrial septal defect, atrioventricular canal. (my-ekg.com)
  • Ostium primum atrial septal defect an atrioventricular canal may causes left-axis deviation 5 . (my-ekg.com)
  • BACKGROUND AND AIM: The GOREĀ® CARDIOFORM (GCO) septal occluder is an atrial septal defect/patent foramen ovale closure device with theoretical advantages over other commercialized devices thanks to its softness and anatomical compliance. (bvsalud.org)
  • In this review, we focus on two challenging problems that span the spectrum of abnormally fast sinus HR. The first section reviews inappropriate sinus tachycardia, a complex disorder characterized by rapid sinus HR without a clear underlying cause, with particular emphasis on current management options. (medscape.com)
  • The diagnosis of atrial ectopic tachycardia is based on the presence of a narrow complex tachycardia (in the absence of aberrancy or preexisting bundle branch block) with visible P waves at an inappropriately rapid rate. (medscape.com)
  • It is characterised by incessant (& sometimes permanent) narrow complex tachycardia, which may be the patient's predominant rhythm. (thebluntdissection.org)
  • If atrial tachyarrhythmia persists and the patient is symptomatic, the patient may benefit from class IA, IC, or class III antiarrhythmics. (wikipedia.org)
  • The techs this week showed me an atrial tachyarrhythmia which did not conduct to the ventricle. (cardiacmonitoringservice.com)
  • The p wave in lead V1 is entirely positive, suggesting a left atrial focus. (acc.org)
  • representing both right & left atrial depolarisation. (thebluntdissection.org)
  • CONCLUSIONS: Percutaneous ASD closure with the GCO device results in significant, sudden improvement of intra-atrial, atrio-ventricular and intraventricular electrical homogeneity. (bvsalud.org)
  • Anatomic evidence suggests the presence of 3 intra-atrial pathways: (1) anterior internodal pathway, (2) middle internodal tract, and (3) posterior internodal tract. (medscape.com)
  • Both atria contract together, as do the ventricles, but atrial contraction occurs first. (medscape.com)
  • Figures 1 and 2 demonstrate a 12-lead electrocardiogram with bursts of atrial tachycardia and sinus rhythm. (acc.org)
  • In contrast to the atrial switch procedures (Mustard and Senning operation), the ASO has the advantage of the maintenance of sinus rhythm, utilization of the left ventricle as the systemic ventricle and the mitral valve as the systemic atrioventricular valve 3) . (e-cep.org)
  • Although estimates of the incidence of pediatric SVTs widely vary, atrial ectopic tachycardia likely occurs with an incidence of approximately 1 case per 10,000 children. (medscape.com)
  • Atrial tachycardia is a type of heart rhythm problem in which the heart's electrical impulse comes from an ectopic pacemaker (that is, an abnormally located cardiac pacemaker) in the upper chambers (atria) of the heart, rather than from the sinoatrial node, the normal origin of the heart's electrical activity. (wikipedia.org)
  • Although the exact incidence is unknown and few large series have been reported, atrial ectopic tachycardia reportedly comprises 5-10% of pediatric SVTs. (medscape.com)
  • three episodes), ventricular ectopics (three episodes), atrial ectopics (one) and P wave abnormalities (one). (nih.gov)
  • Patients with atrial ectopic tachycardia may present with circulatory collapse similar to patients with cardiomyopathy. (medscape.com)
  • Because atrial ectopic tachycardia is often incessant, tachycardia-induced cardiomyopathy is commonly observed. (medscape.com)
  • Tachycardia-induced cardiomyopathy is the most significant sequela of atrial ectopic tachycardia and may be insidious. (medscape.com)
  • It is a rare, but documented cause of tachycardia-induced cardiomyopathy in children & is frustratingly refractory to drug therapy. (thebluntdissection.org)
  • Atrial ectopic tachycardia is often refractory to medical therapy and is not usually responsive to direct current (DC) cardioversion. (medscape.com)
  • Fig. 1) Her electrocardiogram showed sinus tachycardia, right axis deviation, right atrial enlargement, right bundle branch block and right ventricular hypertrophy. (ispub.com)
  • The adult form of atrial ectopic tachycardia may have a different etiology and natural history than the pediatric form. (medscape.com)
  • IST is a diagnosis of exclusion and extensive evaluation to identify secondary causes of sinus tachycardia should be performed. (medscape.com)
  • Atrial ectopic tachycardia is believed to be secondary to increased automaticity of a nonsinus atrial focus or foci. (medscape.com)
  • The chronic and recurrent ones are related to underlying structural causes like atrial disease or mitral disease. (rjmatthewsmd.com)
  • As with any other form of tachycardia (rapid heart beat), the underlying mechanism can be either the rapid discharge of an abnormal focus, the presence of a ring of cardiac tissue that gives rise to a circle movement (reentry), or a triggered rapid rhythm due to other pathological circumstances (as would be the case with some drug toxicities, such as digoxin toxicity). (wikipedia.org)
  • Electrical signals in the ventricles and V-tach cause this abnormal heart rhythm called ventricular tachycardia. (kauveryhospitalsbangalore.com)
  • Left-axis deviation may also be seen in high degrees of pre-excitation , during a ventricular tachycardia , in a paced rhythm 2 , in expiration, pregnancy , ascites, etc. (my-ekg.com)
  • These groups of internodal tissue are best referred to as internodal atrial myocardium, not tracts, as they do not appear to be histologically discrete specialized tracts. (medscape.com)
  • Sinus tachycardia is commonly encountered in clinical practice and when persistent, can result in significant symptoms and impaired quality of life, warranting further evaluation. (medscape.com)
  • this accounts for a peak of 11-16% of tachycardias for which a mechanism is determined in young childhood. (medscape.com)
  • Group I underwent the most intensive preoperative management (balloon atrial septostomy and prostaglandin E1 medication). (e-cep.org)
  • It is at the apex of a triangle formed by the tricuspid annulus and the tendon of Todaro, which originates in the central fibrous body and passes posteriorly through the atrial septum to continue with the eustachian valve (see the images below). (medscape.com)
  • Fig. 2) An echocardiogram done showed a markedly dilated right atrium and a ventricle with a huge atrial secondum defect measuring about 6.55 cm. (ispub.com)
  • Cor triatriatum (or triatrial heart) is a congenital heart defect where the left (cor triatriatum sinistrum) or right atrium (cor triatriatum dextrum) is subdivided by a thin membrane, resulting in three atrial chambers. (ispub.com)
  • It represents the junction between the sinus venarum , the "smooth" portion of the right atrium derived from the embryologic sinus venosus, and the heavily trabeculated right atrial appendage . (radiopaedia.org)
  • Coursing between the caval orifices, it divides the pectinate muscle origin and the right atrial appendages in the right atrium. (radiopaedia.org)
  • The SA node is located less than 1 mm from the epicardial surface, laterally in the right atrial sulcus terminalis at the junction of the anteromedial aspect of the superior vena cava (SVC) and the right atrium (RA). (medscape.com)