Results 111 to 120 of about 12,234 (213)

Rare Case of Rapidly Worsening REM Sleep Induced Bradycardia

Case Reports in Cardiology, 2015
Sinoatrial arrest also known as sinus pause occurs when sinoatrial node of the heart transiently ceases to generate the electrical impulse necessary for the myocardium to contract. It may last from 2.0 seconds to several minutes. Etiologies of sinoatrial
Ayyappa S. Duba, Suneetha Jasty, Ankit Mahajan, Vijay Kodadhala, Raza Khan, Prithviraj Rai, Mohammad Ghazvini   +6 more
doaj   +1 more source

Modelling the sinoatrial node across the scales: the role of heterogeneity in pacemaking and atrial driving [PDF]

During a human being’s life, the heart beats on average 2 to 3 billion times. At each cycle, the primary pacemaker of the heart – the sinoatrial node – automatically depolarizes and excites the atria.
Ricci, Eugenio <1995>
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Comparative aspects among the irrigation types of both ventricular and sinoatrial node in cats

, 2009
Utilizou-se 30 corações de gatos sem raça definida, machos e fêmeas, adultos de idades variadas que não portavam nenhuma afecção cardíaca. Os corações foram injetados pela aorta torácica com Neoprene Latex 450, corados com pigmento vermelho. Verificou-se
Caio Biasi Mauro, Mauro, Caio Biasi
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Relato de Caso Anatomical and clinical aspects of the blood supply of the sinoatrial node [PDF]

, 1998
SUMMARY -BACKGROUND. The recent study of the variations of the origin of the sinoatrial node and on the "arterial network of the perinodal sinusal area" in normal hearts points out the importance of this network. PURPOSE.
E Buffolo, A C Lopes, L J A Didio
core  

Heterogeneous expression of Ca2+ handling proteins in rabbit sinoatrial node

, 2002
We investigated the densities of the L-type Ca2+ current, iCa,L, and various Ca2+ handling proteins in rabbit sinoatrial (SA) node. The density of iCa,L, recorded with the whole-cell patch-clamp technique, varied widely in sinoatrial node cells.
Yoshiko Takagishi, Honjo, Hauro, Lancaster, Mathew K., Mathew K. Lancaster, Kodama, Itsuo, Hauro Honjo, Lei, Ming, Dobrzynski, Halina; id_orcid, Boyett, Mark R., Musa, Hanny, Itsuo Kodama, Halina Dobrzynski, Hanny Musa, Henderson, Zaineb, Jones, Sandra A., Mark R. Boyett, Sandra A. Jones, Zaineb Henderson, Takagishi, Yoshiko, Ming Lei   +19 more
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Establishment of cardiac action potential recording using a membrane potential indicator in the mouse sinoatrial node [PDF]

The cardiac action potential in the sinoatrial node is important, as it propagates throughout the heart and determines cardiac rhythm. Because of the anatomical complexity, pacemaker cells in the sinoatrial node can be difficult to identify for ...
Higuchi, Shoki, Murakami, Agnieszka, Itagaki, Shirou, Toyama, Yuichi, Tomita, Hirofumi, Arakawa, Yoshiaki, Yonekura, Manabu, Murakami, Manabu   +7 more
core  

Regional differences in effects of 4-aminopyridine within the sinoatrial node

, 1998
4-Aminopyridine (4-AP)-sensitive transient outward current ( I to) has been observed in the sinoatrial node, but its role is unknown. The effect of block of I to by 5 mM 4-AP on small ball-like tissue preparations (diameter ∼0.3–0.4 mm) from different ...
M. Yamamoto, I. Kodama, M. R. Nikmaram, H. Honjo, M. R. Boyett, R. Niwa   +5 more
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Single cells isolated from human sinoatrial node: action potentials and numerical reconstruction of pacemaker current

, 2007
Pacemaker activity of the sinoatrial node has extensively been studied in laboratory animals of various species, but is virtually unexplored in man.
Marcel M. G. J. van Borren, Wilders, Ronald, Arie O. Verkerk, Tan, Hanno L., Peters, Ron J. G., Broekhuis, Eli, Lam, Kayan Y., Kayan Y. Lam, Hanno L. Tan, Eli Broekhuis, van Borren, Marcel M. G. J., Ruben Coronel, Ron J. G. Peters, de Bakker, Jacques M. T., Ronald Wilders, Verkerk, Arie O., Coronel, Ruben, Jacques M. T. de Bakker   +17 more
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Staged operation to fontan increases the incidence of sinoatrial node dysfunction

, 1996
Morbidity and mortality of total cavopulmonary connection (modified Fontan procedure) may be decreased in many patients with single ventricle in whom the risk of surgery is high by performing the operations in a staged fashion.
Mayer, John E., Wernovsky, Gil, Walsh, Edward P., Manning, Peter B., Fishberger, Steven B.   +4 more
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Redundant and diverse intranodal pacemakers and conduction pathways protect the human sinoatrial node from failure

, 2017
Multiple redundant and diverse intranodal pacemakers and conduction pathways allow the human sinoatrial node to robustly maintain cardiac rhythm.
John D. Hummel, Mohler, Peter J, Biesiadecki, Brandon J, Brian J. Hansen, Kalyanasundaram, Anuradha, Hansen, Brian J, Jonathan P. Davis, Vadim V. Fedorov, Anthony J. Ignozzi, Kilic, Ahmet, Lidiya V. Sul, Hummel, John D, Paul M. L. Janssen, Li, Ning, Csepe, Thomas A, Weiss, Raul, Stanislav O. Zakharkin, Jichao Zhao, Anuradha Kalyanasundaram, Brandon J. Biesiadecki, Zakharkin, Stanislav O, Janssen, Paul ML, Fedorov, Vadim V, Raul Weiss, Zhao, Jichao, Davis, Jonathan P, Thomas A. Csepe, Ning Li, Ahmet Kilic, Ignozzi, Anthony J, Sul, Lidiya V, Peter J. Mohler   +31 more
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