... miocardio degenerado.El nodo del sen0 y el nodo atrioventricular.sonprhcticamente idhticos en estructura histol6gica en el conejo.En estos nodos puede observarse la presencia de numerosos ndcleos en varios estados de divisibn amitbsicca, pero 10s nlicleos de las c6lulas binucleadas esthn colocados muy pr6ximos entre si y no existe prueba de la divisibn protoplhsmica.La porcion principal del fasciculo atrioventricular presenta una estructura muy semejante.En las fibras ...
Tópico(s): Cardiomyopathy and Myosin Studies
1921 - Wiley | The Anatomical Record
Luis E. Ballesteros, Luis Miguel Ramírez, Pedro Luis Forero,
... originadas de la arteria circunfleja). La arteria del nodo atrioventricular se originó del segmento en «U» invertida de ...
Tópico(s): Cardiac Arrhythmias and Treatments
2010 - Elsevier BV | Revista Colombiana de Cardiología
Akihiko Shimizu, Tohru Ohe, Hiroshi Takaki, Shiro Kamakura, Mokuo Matsuhisa, Iwao Sato, Katsuro Shimomura,
... by a circuit involving antegrade conduction via the atrioventricular nodo‐His axis and retrograde conduction via the nodoventricular ...
Tópico(s): Atrial Fibrillation Management and Outcomes
1988 - Wiley | Pacing and Clinical Electrophysiology
That electrical stimulation of the vagus decreased heart rate and increased the PQ interval in electrocardiogram, consistent with anterograde dual atriventricular conduction. The present experiments were investigating the interaction of the morphine with cardiac parasympathetic nervous control in dual atrioventricular node. Electrical stimulation of the vagus nerve induced significant bradycardia and of third degree atrioventricular block and the P wave appearance was negative in leads II. Because ...
Tópico(s): Cardiac Arrhythmias and Treatments
2006 - UNIVERSIDADE ESTADUAL DE MARINGÁ | Acta Scientiarum Health Sciences
Elena V. Efimova, Sam Riahi, Lukas Fiedler, Masahiro Esato, Philipp Sommer, Sergio Richter, Ole A. Breithardt, Sascha Rolf, Andreas Bollmann, Gerhard Hindricks, Arash Arya,
... properties or a superior atrionodal connection to the nodo-Hisian region of the atrioventricular node rather than the presence of an atrio- ...
Tópico(s): Cardiac electrophysiology and arrhythmias
2014 - Elsevier BV | Heart Rhythm
Mirella Facin, Nelson Samesima,
... miocárdio atrial do ventricular, exceto na região do nodo atrioventricular (AV) e sistema His-Purkinje que, no coração ...
Tópico(s): Cardiomyopathy and Myosin Studies
2023 - Sociedade Brasileira de Cardiologia (SBC) | Arquivos Brasileiros de Cardiologia
... network. Histological evaluation of the Nkx2-5+/neo atrioventricular node revealed that compact nodal cells (N region) that are Cx40−/Cx45+ are distinctly absent, whereas the nodo-His region that is Cx40+/Cx45+ remains intact.79 Immunostaining for Cx40 revealed that the density of Purkinje fibers was reduced.79Surface electrograms of Nkx2-5+/neo mice showed PR and QRS prolongation. Intracardiac electrograms were notable for a diminutive His depolarization amplitude, consistent with reduced size of the His bundle, and for prolonged 1:1 and 2:1 atrioventricular cycle lengths and atrioventricular node effective refractory periods ...
Tópico(s): Cardiovascular Effects of Exercise
2011 - Lippincott Williams & Wilkins | Circulation
Produção Nacional
Revisado por pares
Yan Huo, Gerhard Hindricks, Ulrike Wetzel, Thomas Gaspar, Eduardo Back Sternick,
... were consistent with the diagnosis of a preexcited atrioventricular nodal reentrant tachycardia due to a bystander nodo-ventricular fiber. However, slow pathway ablation did not ...
Tópico(s): Atrial Fibrillation Management and Outcomes
2010 - Wiley | Pacing and Clinical Electrophysiology
A E Becker, R H Anderson, D Durrer, H. J. J. Wellens,
... right lateral connection was anticipated, but only accessory nodo-ventricular fibers were identified following histopathologic studies. In the final case, a posterior septal connection was predicted but the entire septum had fibrosed following previous operation. These findings are discussed in the light of the investigative techniques used, the theories of pre-excitation and the embryogenetic mechanisms producing accessory atrioventricular connections.
Tópico(s): Cardiac electrophysiology and arrhythmias
1978 - Lippincott Williams & Wilkins | Circulation
Damián Sánchez‐Quintana, Beatriz Picazo-Angelín, A Cabrera, Margarita Murillo, José Ángel Cabrera,
... por la posibilidad de producir un bloqueo del nodo AV en pacientes con AE. The development of ablation techniques for supraventricular arrhythmias in patients with Ebstein's anomaly have led to a need for better understanding of the morphology of the triangle of Koch and the position of the atrioventricular (AV) node in this structure. The study involved ...
Tópico(s): Atrial Fibrillation Management and Outcomes
2010 - Elsevier BV | Revista Española de Cardiología
Kenneth W. Hewett, Charles H. Gaymes, Chung Il Noh, Bertrand A. Ross, Robert P. Thompson, David S. Buckles, P C Gillette,
Adult and neonatal rabbit atrioventricular node (AVN) preparations were studied using transmembrane and surface electrogram recordings. Action potentials were categorized into four types, atrionodal (AN), nodal (N), “high” nodo-His (NH) (HNH), and “low” NH (LNH), according to their action potential characteristics and their location within the A-H ...
Tópico(s): Cardiac electrophysiology and arrhythmias
1991 - American Physical Society | AJP Heart and Circulatory Physiology
Robert H. Anderson, A C Wenick, Tom G. Losekoot, A E Becker,
... sulcus tissues and the different components of the atrioventricular junctional area are discussed in terms of an explanation both for the existence of different types of congenitally complete heart block and for persistence of Mahaim (nodo-ventricular and nodo-fascicular) fibers.
Tópico(s): Cardiac pacing and defibrillation studies
1977 - Lippincott Williams & Wilkins | Circulation
Kenneth A. Ellenbogen, Norman M. Ramirez, Douglas L. Packer, William G. O’Callaghan, G. STEPHEN GREEK, Anthony L. Sintetos, M. R. Gilbert, Lawrence D. German,
... W.G., Colavita. P.G., et al.: Catheter atrioventricular junction ablation for recurrent supraventricular tachycardia with nodoventricular fibers. Am. J. Cardiol., 55: 1227, 1983. 34 Gallagher. J.J., Selle, J.G., Sealey, W.C., et al.: Surgical interruption of nodo-ventricular Mahaim fibers with preservation of normal A- ...
Tópico(s): Cardiac pacing and defibrillation studies
1986 - Wiley | Pacing and Clinical Electrophysiology
Tudor Lucian Pop, Dominik Fleischmann, Jacques M de Bakker, S. Effert,
... In the second the gap was at the nodo-Hisian junction. At a critical H1H2 interval splitting of the premature His potential occurred. A decrease of the H1H2 interval led to the disappearance of the distal H2 potential and to atrioventricular block. But at even shorter coupling intervals the ...
Tópico(s): Cardiac pacing and defibrillation studies
1975 - BMJ | Heart
Keisuke Suzuki, Kosuke Aoki, Eiji Sato, Akihiko Ishida, Tetsuo Yagi,
... tachycardia, distinguishing between atrial tachycardia (AT), fast/slow atrioventricular nodal reentrant tachycardia, nodo-fascicular reentrant tachycardia, and permanent junctional form of ...
Tópico(s): Atrial Fibrillation Management and Outcomes
2024 - Elsevier BV | Journal of Arrhythmia
Kenneth M. Steín, Erica D. Engelstein, Neal Lippman, Bruce B. Lerman,
... the first time that a concealed (retrograde only) nodo-Hisian bypass tract functioned as the retrograde limb of orthodromic reciprocating tachycardia. The VA interval was negative during tachycardia, similar to that sometimes observed in atrioventricular nodal reentry. In a second patient an anterograde and retrograde conducting pathway resulted in a pseudo Wolff-Parkinson-White electrocardiographic pattern and served as an “innocent bystander,” permitting a rapid ventricular response during atrial flutter. In conclusion, although atrio-Hisian and nodo-Hisian bypass tracts are rare, they are sufficiently ...
Tópico(s): Cardiovascular Syncope and Autonomic Disorders
1994 - Elsevier BV | American Heart Journal
Bruce B. Lerman, Steven M. Markowitz, Jim W. Cheung, Christopher F. Liu, George Thomas, James E. Ip,
... PowerPointFigure 3. Electrophysiological effects of adenosine on the atrioventricular (AV) node.Top, Representative action potential responses to adenosine in 3 cell types of the AV node. Adenosine decreases action potential duration in atrionodal (AN) cells, decreases maximum upstroke velocity, action potential amplitude, and duration in nodal (N) cells, and has no effect in nodo-Hisian (NH) cells. Bottom compares the relative electrophysiological ...
Tópico(s): Atrial Fibrillation Management and Outcomes
2018 - Lippincott Williams & Wilkins | Circulation Arrhythmia and Electrophysiology
Fang Shawn Foo, Martin K. Stiles, David Heaven,
... CS pacing, suggesting an oblique course through the atrioventricular groove. This would have contributed to the absence of manifest preexcitation in sinus rhythm despite being a right-sided AP. To the authors’ knowledge, this is the second reported case of latent preexcitation in a typical right-sided AP (excluding nodo-ventricular APs), but the first reported case to ...
Tópico(s): ECG Monitoring and Analysis
2020 - Elsevier BV | Journal of Arrhythmia
Damián Sánchez‐Quintana, Beatriz Picazo-Angelín, A Cabrera, Margarita Murillo, José Ángel Cabrera,
... Koch (TK) y disposición en dicha estructura del nodo auriculoventricular (AV). Se han estudiado 17 corazones humanos, ... del TK y se midió la longitud del nodo AV y el haz de His. El área ... 0,05). En los corazones con AE, el nodo AV y sus extensiones son similares en longitud a los corazones normales. El nodo AV en los especímenes con AE se desplaza ... por la posibilidad de producir un bloqueo del nodo AV en pacientes con AE.
Tópico(s): Atrial Fibrillation Management and Outcomes
2010 - Elsevier BV | Revista Española de Cardiología (English Edition)
Richard L. Page, José A. Joglar, Mary A. Caldwell, Hugh Calkins, Jamie B. Conti, Barbara J. Deal, N.A. Mark Estes, Michael E. Field, Zachary D. Goldberger, Stephen C. Hammill, Julia H. Indik, Bruce D. Lindsay, Brian Olshansky, Andrea M. Russo, Win-Kuang Shen, Cynthia M. Tracy, Sana M. Al‐Khatib,
... accessory pathways of other types (such as atriofascicular, nodo-fascicular, nodo-ventricular, and fasciculoventricular pathways) are uncommon and are ... patient with ventricular pre-excitation during sinus rhythm.Atrioventricular reentrant tachycardia (AVRT)A reentrant tachycardia, the electrical ... of which requires an accessory pathway, the atrium, atrioventricular node (or second accessory pathway), and ventricle. • Orthodromic ... AF indicates atrial fibrillation; AT, atrial tachycardia; AV, atrioventricular; AVNRT, atrioventricular nodal reentrant tachycardia; AVRT, atrioventricular reentrant ...
Tópico(s): Atrial Fibrillation Management and Outcomes
2015 - Lippincott Williams & Wilkins | Circulation
Satoshi Higuchi, Edward P. Gerstenfeld, Henry H. Hsia, Christopher X. Wong, Reginald T. Ho, Patrick Tchou, Batel Nissan, Ayelet Shauer, Bernard Belhassen, Melvin M. Scheinman,
Confirming the presence and participation of concealed nodo-ventricular (cNV) or concealed His-ventricular (cHV) pathways in tachyarrhythmias is challenging. We describe novel observations to aid in diagnosing cNV or cHV ... one case exhibiting apical VOD results compatible with atrioventricular nodal reentrant tachycardia. Basal VOD was useful for ... the atrium, which excluded the involvement of an atrioventricular pathway or atrial tachycardia, or atrioventricular nodal reentrant tachycardia alone. One case had His ...
Tópico(s): Cardiovascular Effects of Exercise
2023 - Lippincott Williams & Wilkins | Circulation Arrhythmia and Electrophysiology
Richard L. Page, José A. Joglar, Mary A. Caldwell, Hugh Calkins, Jamie B. Conti, Barbara J. Deal, N.A. Mark Estes, Michael E. Field, Zachary D. Goldberger, Stephen C. Hammill, Julia H. Indik, Bruce D. Lindsay, Brian Olshansky, Andrea M. Russo, Win-Kuang Shen, Cynthia M. Tracy, Sana M. Al‐Khatib,
... accessory pathways of other types (such as atriofascicular, nodo-fascicular, nodo-ventricular, and fasciculoventricular pathways) are uncommon and are ... patient with ventricular pre-excitation during sinus rhythm.Atrioventricular reentrant tachycardia (AVRT)A reentrant tachycardia, the electrical ... of which requires an accessory pathway, the atrium, atrioventricular node (or second accessory pathway), and ventricle.•Orthodromic ... AF indicates atrial fibrillation; AT, atrial tachycardia; AV, atrioventricular; AVNRT, atrioventricular nodal reentrant tachycardia; AVRT, atrioventricular reentrant ...
Tópico(s): Atrial Fibrillation Management and Outcomes
2015 - Elsevier BV | Heart Rhythm
Richard L. Page, José A. Joglar, Mary A. Caldwell, Hugh Calkins, Jamie B. Conti, Barbara J. Deal, N.A. Mark Estes, Michael E. Field, Zachary D. Goldberger, Stephen C. Hammill, Julia H. Indik, Bruce D. Lindsay, Brian Olshansky, Andrea M. Russo, Win-Kuang Shen, Cynthia M. Tracy, Sana M. Al‐Khatib,
... accessory pathways of other types (such as atriofascicular, nodo-fascicular, nodo-ventricular, and fasciculoventricular pathways) are uncommon and are ... patient with ventricular pre-excitation during sinus rhythm.Atrioventricular reentrant tachycardia (AVRT)A reentrant tachycardia, the electrical ... of which requires an accessory pathway, the atrium, atrioventricular node (or second accessory pathway), and ventricle. • Orthodromic ... AF indicates atrial fibrillation; AT, atrial tachycardia; AV, atrioventricular; AVNRT, atrioventricular nodal reentrant tachycardia; AVRT, atrioventricular reentrant ...
Tópico(s): Atrial Fibrillation Management and Outcomes
2015 - Lippincott Williams & Wilkins | Circulation
Roberto Barriales‐Villa, Raúl Centurión-Inda, Xusto Fernández, Martín Ortiz, Luisa Pérez‐Álvarez, Isabel Rodríguez García, Manuel Hermida‐Prieto, Lorenzo Monserrat,
... implantó un marcapasos: 20 casos por disfunción del nodo sinusal y 28 casos por trastorno de la ... con bloqueo auriculoventricular iatrogénico o ablación terapéutica del nodo auriculoventricular) fueron causa de implante en 36 pacientes ( ...
Tópico(s): Cardiovascular Function and Risk Factors
2010 - Elsevier BV | Revista Española de Cardiología (English Edition)
Roberto Barriales‐Villa, Raúl Centurión-Inda, Xusto Fernández, Martín Ortiz, Luisa Pérez‐Álvarez, Isabel Rodríguez García, Manuel Hermida‐Prieto, Lorenzo Monserrat,
... implantó un marcapasos: 20 casos por disfunción del nodo sinusal y 28 casos por trastorno de la ... con bloqueo auriculoventricular iatrogénico o ablación terapéutica del nodo auriculoventricular) fueron causa de implante en 36 pacientes ( ... had sinus node dysfunction and 28 had an atrioventricular conduction disturbance. Primary bradyarrhythmia (which was not related to iatrogenic atrioventricular block or therapeutic ablation of the atrioventricular node) was the reason for permanent pacemaker implantation ...
Tópico(s): Viral Infections and Immunology Research
2010 - Elsevier BV | Revista Española de Cardiología
Damián Sánchez‐Quintana, Siew Yen Ho,
Al mismo tiempo que se han desarrollado las técnicas de ablación mediante catéter para el tratamiento de las arritmias, se ha producido un gran interés por la disposición anatómica del sistema de conducción cardíaco. La descripción morfológica de los nodos cardíacos y del sistema de conducción específico comenzó hace aproximadamente 100 años. Desde entonces ha sido un tema polémico, posiblemente debido al conocimiento poco preciso de las definiciones histológicas que los primeros investigadores ...
Tópico(s): Cardiac electrophysiology and arrhythmias
2003 - Elsevier BV | Revista Española de Cardiología
E Rodríguez Pérez, Fernando Benito Bartolomé, P. Sanabria Carretero, C. Sánchez Fernández, E. Jiménez Mateos, L. Goldman Tarlovsky,
... cuatro electrocatéteres intracardiacos. Se determinaron la función del nodo sinusal, la conducción sinoatrial, períodos refractarios (auricular, nodo AV, anterógrado y retrógrado de la vía accesoria, ... of the minimum pacing cycle with 1:1 atrioventricular conduction (EPSpropofol, 244 (41) ms; EPSsevoflurane, 273 (28) ...
Tópico(s): Cardiac electrophysiology and arrhythmias
2008 - Elsevier BV | Revista Española de Anestesiología y Reanimación
Paul N. Johnstone, Frank H. Wakefield,
... las reconstrucciones: 1) Las fibras de Purkinje del nodo atrio-ventricular, conforme ha demostrado Tawara, son mucho ... algo cilindrica.Aunque son mayores que las del nodo, parecen mucho m8s pequefias que en las expansiones ... ramifican y anastomosan menos que las fibras del nodo, per0 m8s que las de las expansiones terminales. ...
Tópico(s): Congenital heart defects research
1922 - Wiley | The Anatomical Record
M. Marín-Gracia, Daniel Cantero-Lozano, E. Garcés-Antón, A. López-Bravo, Alberto Garrido Fernández, María Pilar Navarro‐Pérez, Sonia Santos‐Lasaosa, Moisès Garcés,
... tejido cardiaco no sinusal. Una alteracion en el nodo auriculoventricular o infrahisiano es mas congruente con su ...
Tópico(s): Epilepsy research and treatment
2018 - Viguera Publishers | Revista de Neurología
Produção Nacional
Revisado por pares
Ignacio Anguera, Josép Brugada, Lluı́s Mont, Mariana Valentino, Luis Aguinaga, Mariona Matas, Francisco Navarro‐López, Pedro Brugada,
Radiofrequency ablation of the atrioventricular conduction system has become an established therapy for patients with drug-refractory atrial fibrillation. We observed 14 patients with hemodynamic ... 256 patients (group A) undergoing ablation of the atrioventricular conduction system deteriorated with acute pulmonary edema (3 ... is a potential complication of ablation of the atrioventricular conduction system.
Tópico(s): Cardiac pacing and defibrillation studies
1998 - Elsevier BV | Revista Española de Cardiología