Loading...
*  Management of atrial fibrillation
... the atrioventricular node - which regulates heart rate, and to implant a pacemaker instead. This "ablate and pace" technique ... Rate control is achieved with medications that work by increasing the degree of block at the level of the AV node, effectively ... amiodarone has some AV node blocking effects (particularly when administered intravenously), and can be used in individuals ...
*  Radiofrequency ablation
... either to block the atrioventricular node after implantation of a pacemaker or to block conduction within the left atrium, ... In some conditions, especially forms of intra-nodal re-entry (the most common type of SVT), also called atrioventricular nodal ... 2010). "Cryoablation Versus Radiofrequency Energy for the Ablation of Atrioventricular Nodal Reentrant Tachycardia (the CYRANO ...
*  Wandering pacemaker
SA node), the atria, and/or the atrioventricular node (AV node). This shifting of the pacemaker from the SA node to adjacent ... With increased vagal tone the SA Node slows, allowing a pacemaker in the atria or AV Nodal area, which may briefly become ... After vagal tone decreases, the SA Node assumes its natural pace. A wandering atrial pacemaker, also termed multifocal atrial ... is an atrial arrhythmia that occurs when the natural cardiac pacemaker site shifts between the sinoatrial node ( ...
*  Dromotropic
A dromotropic agent is one which affects the conduction speed in the AV node, and subsequently the rate of electrical impulses ... "Chronotropic and dromotropic responses to stimulation of intracardiac sympathetic nerves to sinoatrial or atrioventricular ...
*  Bundle of His
... as it transmits impulses from the atrioventricular node, located at the inferior end of the interatrial septum, to the ... As part of the electrical conduction system of the heart, it transmits the electrical impulses from the AV node (located ... Kistin AD (May 1949). "Observations on the anatomy of the atrioventricular bundle (bundle of His) and the question of other ... Atlas image: ht_rt_vent at the University of Michigan Health System - "Right atrioventricular bundle branch, anterior view" ...
*  Karel Frederik Wenckebach
... describing the median bundle of the heart's conductive system that connects the sinoatrial node to the atrioventricular node. ... James, Thomas N. (1 October 1963). "The connecting pathways between the sinus node and A-V node and between the right and the ... A similar phenomenon can also occur in the Sinoatrial node where it gives rise to Type I second degree SA block, and this is ... In 1899 he provided a description of irregular pulses due to partial blockage of atrioventricular conduction, creating a ...
*  Heart block
Conduction is initiated by the sinoatrial node ("sinus node" or "SA node"), and then travels to the atrioventricular node ("AV ... SA node Wenckebach (Mobitz I) SA node Mobitz II SA node exit block In addition to the above blocks, the SA node can be ... The difference between SA node block and SA node suppression is that in SA node block an electrical impulse is generated by the ... In SA node suppression, on the other hand, the SA node doesn't generate an electrical impulse because it is reset by the ...
*  Sinoatrial node
Other cells within the heart (including the purkinje fibers and atrioventricular node; AVN) can also initiate action potentials ... The sinoatrial node (SA node), also known as sinus node, is a group of cells located in the wall of the right atrium of the ... although in some cases there have been either 2 or 3 sinoatrial node arteries supplying the SA node. Also, the SA node artery, ... If the SA node does not function, or the impulse generated in the SA node is blocked before it travels down the electrical ...
*  Atrioventricular node
The atrioventricular node, or AV node is a part of the electrical conduction system of the heart that coordinates the top of ... This activates the AV node. The atrioventricular node delays impulses by approximately 0.12s. This delay in the cardiac pulse ... November 2007). "Abnormal Conduction and Morphology in the Atrioventricular Node of Mice With Atrioventricular Canal-Targeted ... The AV node is quite compact (~1 x 3 x 5 mm). The AV node lies at the lower back section of the interatrial septum near the ...
*  Concealed conduction
Atrioventricular node Electrocardiogram. ... However, this AV node stimulation (which is not visible on EKG ... As a result of the rapid atrial rate, some of the atrial activity fails to get through the AV node in an antegrade direction ... because the retrograde impulse from the PVC does not completely penetrate the AV node. ... by itself, hence "concealed") can cause a delay in subsequent AV conduction by modifying the AV node's subsequent conduction ...
*  Common ostrich
The atrioventricular node position differs from other fowl. It is located in the endocardium of the atrial surface of the right ... 10 (1): 21-7. Parto P. (2012). "The Structure of the Atrioventricular Node in the Heart of the Female Laying Ostrich (Struthio ... The AV node connects the atrial and ventricular chambers. It functions to carry the electrical impulse from the atria to the ... The sinoatrial node shows a small concentration of purkinje fibers, however, continuing through the conducting pathway of the ...
*  Chronotropic
A dromotrope affects atrioventricular node (AV node) conduction. A positive dromotrope increases AV nodal conduction, and a ... such as by changing the rhythm produced by the sinoatrial node. Positive chronotropes increase heart rate; negative ...
*  Heart
The signal then travels to the atrioventricular node. This is found at the bottom of the right atrium in the atrioventricular ... The right coronary artery also supplies blood to the atrioventricular node (in about 90% of people) and the sinoatrial node (in ... Tawara's discovery of the atrioventricular node prompted Arthur Keith and Martin Flack to look for similar structures in the ... These generate a current that causes contraction of the heart, traveling through the atrioventricular node and along the ...
*  Supraventricular tachycardia
They start from either the atria or atrioventricular node. They are generally due to one of two mechanisms: re-entry or ... Sinoatrial node reentrant tachycardia (SANRT) is caused by a reentry circuit localised to the SA node, resulting in a P-wave of ... Cryoablation is a newer treatment for SVT involving the AV node directly. SVT involving the AV node is often a contraindication ... at the atrioventricular node, which allows only a proportion of the fast impulses to pass through to the ventricles. In Wolff- ...
*  Right axis deviation
It is measured using an electrocardiogram (ECG). Normally, this begins at the atrioventricular node (AV node); from here the ... Pre-excitation refers to early activation of the ventricles due to impulses bypassing the AV node via an accessory pathway. ...
*  Lyme disease
"Fatal Lyme carditis and endodermal heterotopia of the atrioventricular node". Postgrad. Med. J. 66 (772): 134-36. doi:10.1136/ ... may adversely impact the heart's electrical conduction system and can cause abnormal heart rhythms such as atrioventricular ...
*  Cystic tumour of the atrioventricular nodal region
It is also known as mesothelioma of the atrioventricular node. It may present as a cardiac arrhythmia or as sudden cardiac ... tumour of the atrioventricular nodal region is a very rare tumour of the heart in the region of the atrioventricular node. ... Cystic tumours of the atrioventricular nodal region, true to their name, have cystic spaces, which are lined by a single layer ... Apr 2000). "Cystic tumour of the atrioventricular nodal region: report of a case successfully treated with surgery". Heart. 83 ...
*  Digoxin
... also has important parasympathetic effects, particularly on the atrioventricular node. The main pharmacological effects ... The refractory period of the atria and ventricles is decreased, while it increases in the sinoatrial and AV nodes. A less ... The conduction velocity increases in the atria, but decreases in the AV node. The effect upon Purkinje fibers and ventricles is ... By slowing down the conduction in the AV node and increasing its refractory period, digoxin can reduce the ventricular rate. ...
*  List of pathologists
Ludwig Aschoff (1866-1942), German pathologist, discoverer of the Aschoff body and the Atrioventricular node in the heart. Max ... discoverer of the Atrioventricular node. Donald Teare (1911-1979), British pathologist. Jacques-René Tenon (1724-1816), French ...
*  Junctional rhythm
Current then passes from the atria through the atrioventricular node and into the bundle of His, from which it travels along ... When this happens, the heart's atrioventricular node takes over as the pacemaker. In the case of a junctional rhythm, the atria ... Retrograde P waves refers to the depolarization from the AV node back towards the SA node. Junctional tachycardia Junctional ... an abnormal heart rhythm resulting from impulses coming from a locus of tissue in the area of the atrioventricular node, the " ...
*  Muscarinic antagonist
In the atrioventricular node, the resting potential is abbreviated, which facilitates conduction. This is seen as a shortened ... It causes tachycardia by blocking vagal effects on the sinoatrial node. Acetylcholine hyperpolarizes the sinoatrial node, which ...
*  Nav1.5
In contrast, expression is low in the sinoatrial node and atrioventricular node. Within the heart, a transmural expression ...
*  Atrial septal defect
Clark E, Kugler J (1982). "Preoperative secundum atrial septal defect with coexisting sinus node and atrioventricular node ... Both of these can cause an increased distance of internodal conduction from the SA node to the AV node. In addition to the PR ... but it is more commonly classified as an atrioventricular septal defect. Ostium primum defects are less common than ostium ...
*  Koch's triangle
Variations in the size of Koch's triangle are common among people with different age and gender.The Atrioventricular node or ... tendon of Todaro and atrioventricular node. Also the elements anatomically near to it, are the insertion of the tricuspid valve ... "Koch's Triangle and the Atrioventricular Node in Ebstein's Anomaly: Implications for Catheter Ablation". Revista Española de ... the AV node is located at the apex of this triangle which depicts its anatomical importance . Sumitomo, Naokata; Tateno, ...
*  Ludwig Aschoff
Together they discovered and described the atrioventricular node (AV node, Aschoff-Tawara node). Numerous travels abroad, to ...
*  List of ICD-9 codes 390-459: diseases of the circulatory system
Atrioventricular block, third degree (426.11) Atrioventricular block, first degree (426.12) Atrioventricular block, Mobitz II ( ... Acute febrile mucocutaneous lymph node syndrome (446.5) Giant Cell arteritis(Temporal Arteritis) (447) Other disorders of ... 426.13) Atrioventricular block, Wenckebach's (426.3) Bundle branch block, left (426.4) Bundle branch block, right (426.6) ... Sinoatrial heart block (426.7) Atrioventricular excitation, anomalous Wolff-Parkinson-White syndrome (427) Cardiac dysrhythmias ...
*  Atrioventricular nodal branch
The atrioventricular nodal branch is a cardiac artery that is crucial because it feeds the atrioventricular node, necessary for ... Very rarely, in approximately 2% of people, the vascular supply to the atrioventricular node arises from both the right ... In some people, the atrioventricular node instead receives blood from the circumflex branch of the left coronary artery, ... The artery of the atrioventricular node: an anatomic study based on 38 injection-dissections. Surg Radiol Anat 1996;18:183-187 ...