Results 41 to 50 of about 22,957 (209)

A case of typical atrioventricular nodal (AVN) reentrant tachycardia confined to the compact AV node, showing a variety of rare electrophysiological findings, including eccentric AVN echoes

Journal of Arrhythmia, 2014
Herein, we report the case of a 49-year-old woman with typical atrioventricular nodal (AVN) reentrant tachycardia, confined to the compact atrioventricular node, showing numerous rare electrophysiological findings such as unique AVN reentrant echoes ...
Kazushi Tanaka, M.D., Ph.D., Shinji Shiotani, M.D., Keisuke Fukuda, M.D., Masahiko Fujihara, M.D., Akihiro Higashimori, M.D., Nobuyuki Morioka, M.D., Yoshiaki Yokoi, M.D., Ph.D., F.A.C.C., F.S.C.A.I., Osamu Fujimura, M.D., F.A.C.C.   +7 more
doaj   +1 more source

Pathophysiology of Cav1.3 L-type calcium channels in the heart

Frontiers in Physiology, 2023
Ca2+ plays a crucial role in excitation-contraction coupling in cardiac myocytes. Dysfunctional Ca2+ regulation alters the force of contraction and causes cardiac arrhythmias. Ca2+ entry into cardiomyocytes is mediated mainly through L-type Ca2+ channels,
Sahil Zaveri, Sahil Zaveri, Ujala Srivastava, Yongxia Sarah Qu, Yongxia Sarah Qu, Yongxia Sarah Qu, Mohamed Chahine, Mohamed Chahine, Mohamed Boutjdir, Mohamed Boutjdir, Mohamed Boutjdir   +10 more
doaj   +1 more source

Transthyretin amyloid cardiomyopathy: Literature review and red‐flag symptom clusters for each cardiology specialty

ESC Heart Failure, Volume 12, Issue 2, Page 955-967, April 2025.
Abstract Wild‐type transthyretin amyloid cardiomyopathy (ATTRwt‐CM) is a progressive and infiltrative cardiac disorder that may cause fatal consequences if left untreated. The estimated survival time from diagnosis is approximately 3–6 years. Because of the non‐specificity of initial symptom manifestation and insufficient awareness among treating ...
Yasuhiro Izumiya, Toru Kubo, Jin Endo, Seiji Takashio, Masatoshi Minamisawa, Jun Hamada, Tomonori Ishii, Hajime Abe, Hiroaki Konishi, Kenichi Tsujita   +9 more
wiley   +1 more source

A phenomap of TTR amyloidosis to aid diagnostic screening

ESC Heart Failure, Volume 12, Issue 2, Page 1113-1118, April 2025.
Abstract Cardiac amyloidosis due to transthyretin (ATTR) remains an underdiagnosed cause of cardiomyopathy. As awareness of the disease grows and referrals for ATTR increase, clinicians are likely to encounter more atypical forms of the condition in clinical practice.
Alexios S. Antonopoulos, Theodoros Tsampras, George Lazaros, Konstantinos Tsioufis, Charalambos Vlachopoulos   +4 more
wiley   +1 more source

Repeated misclassifications of tachycardia by an implantable cardiac defibrillator

Indian Pacing and Electrophysiology Journal, 2020
This case describes repeated misclassifications of SVT due to AV node reentry as VT by an ICD. This case illustrates the limitations of SVT-VT discrimination algorithm.
Atsuyuki Watanabe, Osamu Fujimura
doaj   +1 more source

Connecting the dots: A narrative review of the relationship between heart failure and cognitive impairment

ESC Heart Failure, Volume 12, Issue 2, Page 1119-1131, April 2025.
Abstract Large clinical data underscore that heart failure is independently associated to an increased risk of negative cognitive outcome and dementia. Emerging evidence suggests that cerebral hypoperfusion, stemming from reduced cardiac output and vascular pathology, may contribute to the largely overlapping vascular dementia and Alzheimer's disease ...
Mauro Massussi, Maria Giulia Bellicini, Marianna Adamo, Andrea Pilotto, Marco Metra, Alessandro Padovani, Riccardo Proietti   +6 more
wiley   +1 more source

Atrioventricular Reciprocating Tachycardia Mediated by Twin Atrioventricular Nodes

JACC: Clinical Electrophysiology, 2016
A 21-year-old man with univentricular and uniatrial heart came for a third attempt at ablation of recurrent supraventricular tachycardia. He had undergone a previous cardiac surgery of a Blalock–Taussig shunt, and bidirectional Glenn, and the electrophysiological study revealed an ...
Antonio, Frontera, Darren, Hooks, Bernard, Kreitmann, Jean-Benoit, Thambo, Michel, Haïssaguerre, Nicolas, Derval   +5 more
openaire   +2 more sources

Spread of Activity Through the Atrioventricular Node [PDF]

Circulation Research, 1960
Electrophysiologic mapping experiments on the excitation of the A-V node of isolated rabbit heart have been performed with intracellular microelectrodes. An area of tissue showing peculiar physiologic characteristics was shown to coincide, at least in part, with the histologic A-V node and His bundle.
A, de CARVALHO, D, de ALMEIDA
openaire   +2 more sources

Artificial intelligence in preclinical epilepsy research: Current state, potential, and challenges

Epilepsia Open, EarlyView.
Abstract Preclinical translational epilepsy research uses animal models to better understand the mechanisms underlying epilepsy and its comorbidities, as well as to analyze and develop potential treatments that may mitigate this neurological disorder and its associated conditions. Artificial intelligence (AI) has emerged as a transformative tool across
Jesús Servando Medel‐Matus, Cesar Santana‐Gomez, Ruby G. Escalante, Dominique Duncan, Pedro F. Viana, Giulia Sofia Cereda, Naoto Kuroda, Aristea S. Galanopoulou   +7 more
wiley   +1 more source

Autoimmune Calcium Channelopathies and Cardiac Electrical Abnormalities

Frontiers in Cardiovascular Medicine, 2019
Patients with autoimmune diseases are at increased risk for developing cardiovascular diseases, and abnormal electrocardiographic findings are common.
Yongxia Sarah Qu, Yongxia Sarah Qu, Pietro Enea Lazzerini, Pier Leopoldo Capecchi, Franco Laghi-Pasini, Nabil El Sherif, Mohamed Boutjdir, Mohamed Boutjdir   +7 more
doaj   +1 more source