Results 21 to 30 of about 10,333 (179)

Atypical form of sinoatrial node reentrant tachycardia: Should the traditional diagnostic criteria be modified? [PDF]

HeartRhythm Case Reports
Shin Sakai, MD, Mitsunori Maruyama, MD, PhD, FHRS, Eiichiro Oka, MD, PhD, Kuniya Asai, MD, PhD   +3 more
doaj   +2 more sources

Genetics of sinoatrial node function and heart rate disorders [PDF]

Disease Models & Mechanisms, 2023
Lieve E. van der Maarel, Alex V. Postma, Vincent M. Christoffels   +2 more
doaj   +2 more sources

The Organization of the Sinoatrial Node Microvasculature Varies Regionally to Match Local Myocyte Excitability

Function, 2021
The cardiac cycle starts when an action potential is produced by pacemaking cells in the sinoatrial node. This cycle is repeated approximately 100 000 times in humans and 1 million times in mice per day, imposing a monumental metabolic demand on the ...
Nathan Grainger, Laura Guarina, Robert H Cudmore, L Fernando Santana   +3 more
doaj   +1 more source

Assembly of the Cardiac Pacemaking Complex: Electrogenic Principles of Sinoatrial Node Morphogenesis

Journal of Cardiovascular Development and Disease, 2021
Cardiac pacemaker cells located in the sinoatrial node initiate the electrical impulses that drive rhythmic contraction of the heart. The sinoatrial node accounts for only a small proportion of the total mass of the heart yet must produce a stimulus of ...
Marietta Easterling, Simone Rossi, Anthony J Mazzella, Michael Bressan   +3 more
doaj   +1 more source

Microvascular Rarefaction in the Sinoatrial Node: A Potential Mechanism for Pacemaker Dysfunction in Early HFpEF. [PDF]

JACC Clin Electrophysiol
Manning D, Rivera EJ, Rhana P, Matsumoto C, Fong Z, Thai PN, Muñoz MF, Contreras JE, Kim S, Grainger N, Chiamvimonvat N, Bautista GM, Santana LF.   +12 more
europepmc   +2 more sources

Cycle length restitution in sinoatrial node cells: a theory for understanding spontaneous action potential dynamics. [PDF]

PLoS ONE, 2014
Normal heart rhythm (sinus rhythm) is governed by the sinoatrial node, a specialized and highly heterogeneous collection of spontaneously active myocytes in the right atrium.
Patric Glynn, Birce Onal, Thomas J Hund
doaj   +1 more source

Junctional Pacemaker May Replace the Sinoatrial Node

Cardiovascular Innovations and Applications, 2021
Junctional rhythm is usually seen in the clinic with different causes. We report a case of bicuspid aortic valve accompanied by sinoatrial node dysfunction.
Min Lin, Yuqin Xiong, Yipin Lin, Yuhua Li, Lijuan Zhang   +4 more
doaj   +1 more source

Anatomopathological changes in canine distemper seropositive dogs and virus detection in sinoatrial nodes

Bioscience Journal, 2020
Canine distemper is a viral disease that affects several systems on dogs, among them, the cardiovascular system. The aim of this study was to identify canine distemper virus (CDV) in the sinoatrial node (SAN) of dogs serologically positive for distemper
José Eugenio Diniz Bastos, Neide Maria Silva, Marisol Patrícia Pallete Briceño, Tais Meziara Wilson, Alessandra Aparecida Medeiros-Ronchi   +4 more
doaj   +3 more sources

Biochemical and biomechanical properties of the pacemaking sinoatrial node extracellular matrix are distinct from contractile left ventricular matrix. [PDF]

PLoS ONE, 2017
Extracellular matrix plays a role in differentiation and phenotype development of its resident cells. Although cardiac extracellular matrix from the contractile tissues has been studied and utilized in tissue engineering, extracellular matrix properties ...
Jessica M Gluck, Anthony W Herren, Sergey Yechikov, Hillary K J Kao, Ambereen Khan, Brett S Phinney, Nipavan Chiamvimonvat, James W Chan, Deborah K Lieu   +8 more
doaj   +1 more source

Sinoatrial-Node Entrance Block [PDF]

Circulation, 1971
Sinus-node function was characterized in 13 patients during cardiac catheterization by the introduction of progressively premature atrial depolarizations. Curves relating the extent of sinus-node depression following these premature depolarizations and their degree of prematurity were constructed.
B N, Goldreyer, A N, Damato
openaire   +2 more sources