Results 61 to 70 of about 1,860 (159)

Left Ventricular wall Thickness and Decrement Evoked Potentials in Ablation of Ischemic Ventricular Tachycardia

Pacing and Clinical Electrophysiology, EarlyView.
ABSTRACT Introduction Preprocedural imaging can improve the success rate of ventricular tachycardia (VT) ablation. Left ventricular wall thickness (LVWT) measured by cardiac computed tomography (CT) can be used to identify infarct regions. We sought to determine whether an association exists between left ventricular wall thickness (LVWT) as obtained ...
Alwin B. P. Noordman, Ahmed S. Yassin, Michiel Rienstra, Alexander H. Maass, Yuri Blaauw   +4 more
wiley   +1 more source

Left bundle branch block in coronary artery disease: toward novel electrocardiographic markers

КардиоСоматика
BACKGROUND: Complete left bundle branch block is a classic example of an electrocardiogram that is non-informative when assessed using conventional criteria for myocardial ischemia.
Yuri N. Fedulaev, Irina V. Makarova, Alisa V. Grigorieva, Dzhamilya R. Kapitonova, Gulfiya A. Khairetdinova   +4 more
doaj   +1 more source

QRS fragmentation is superior to QRS duration in predicting mortality in adults with tetralogy of Fallot

Heart, 2016
Background Although QRS duration >180 ms has prognostic value in adults with tetralogy of Fallot (TOF), its sensitivity to predict mortality is low. Fragmented QRS complexes, a simple measurement on ECG, are related to myocardial fibrosis and dysfunction in patients with TOF.
Jouke P Bokma, Michiel M Winter, Jim T Vehmeijer, Hubert W Vliegen, Arie P van Dijk, Joost P van Melle, Folkert J Meijboom, Martijn C Post, Aeilko H Zwinderman, Barbara J M Mulder, Berto J Bouma   +10 more
openaire   +6 more sources

Cellular mechanisms of radiation‐induced myocyte dysfunction: effects on calcium handling, ion channel regulation and mitochondrial energetics

The Journal of Physiology, EarlyView.
Abstract figure legend Dose‐dependent effects of radiation on cardiac electrophysiology and arrhythmia susceptibility. At low radiation doses (left), increased reactive oxygen species (ROS) initiate an ROS–Ca2+ positive feedback loop involving calcium/calmodulin‐dependent protein kinase II (CaMKII) activation, enhanced L‐type Ca2+ current (ICaL ...
Hannah M. Zukowski, Colleen E. Clancy
wiley   +1 more source

Fragmented QRS electrocardiogram--the hidden Talisman?

Indian pacing and electrophysiology journal, 2009
There are several stigmas on the resting surface electrocardiogram that are indicators of past myocardial injury. Broad QRS pattern with bundle branch block, Q waves, persistent ST elevation are some of those facsimiles which may at times even be considered as definitive signs of left ventricular impairment.
Frijo Jose, Mangalath Krishnan
openaire   +2 more sources

Taxonomic Revision of Corsia (Corsiaceae) Reveals Over‐Estimated Mycoheterotroph Diversity in Papuasia: 25 Species Become 10

Feddes Repertorium, Volume 137, Issue 3, September 2026.
ABSTRACT Corsia (Corsiaceae) is a remarkable genus of achlorophyllous, fully mycoheterotrophic plants distributed across New Guinea, the Solomon Islands, and Northern Australia. The genus has often been considered an example of adaptive radiation amongst mycoheterotrophic plants, with 25 narrowly endemic species, most known from just one or two ...
Sebastian A. Hatt, Penniel Lamei
wiley   +1 more source

Association of fragmented QRS complexes on ECG with left ventricular diastolic function in hypertensive patients

Türk Kardiyoloji Derneği Arşivi, 2015
Objectives: Diastolic dysfunction occurs as a result of interstitial fibrosis in hypertensive patients. Fragmented QRS (fQRS) on ECG signifies myocardial fibrosis in various clinical situations.
Hasan Kadı, Ayşe Kevser Demir, Köksal Ceyhan, İbrahim Halil Damar, Kayıhan Karaman, Çağrı Zorlu   +5 more
doaj   +1 more source

A Machine-Learning Approach for Detection and Quantification of QRS Fragmentation

IEEE Journal of Biomedical and Health Informatics, 2019
Fragmented QRS (fQRS) is an accessible biomarker and indication of myocardial scarring that can be detected from the electrocardiogram (ECG). Nowadays, fQRS scoring is done on a visual basis, which is time consuming and leads to subjective results. This study proposes an automated method to detect and quantify fQRS in a continuous way using features ...
Goovaerts, G., Padhy, S., Vandenberk, B., Varon, C., Willems, R., Van Huffel, Sabine   +5 more
openaire   +2 more sources

SRM 1650b Administration to Isolated Rat Heart Aggravates Ischemia‐Reperfusion Injury via Mitochondrial Dysfunction and Downregulation of PI3K/Akt Signaling Pathways

Journal of Biochemical and Molecular Toxicology, Volume 40, Issue 8, August 2026.
SRM 1650b diesel particulate matter caused dose‐dependent cardiotoxicity in isolated male Wistar rat hearts, worsening hemodynamics and tissue injury after ischemia–reperfusion. It increased oxidative stress, impaired mitochondrial bioenergetics and respiration, downregulated mitochondrial quality‐control genes, reduced mtDNA copy number, and ...
Kirankumar Balu, Uvasshri Vijayakumar, Bhavana Sivakumar, Priyanka N. Prem, Gino A. Kurian   +4 more
wiley   +1 more source

Assessment of QRS duration and presence of fragmented QRS in patients with celiac disease

International Journal of Medical Sciences
Background: Celiac Disease (CD) is characterized by small intestine involvement. However, cardiac manifestations may also be seen in the clinical course. The significance of the QRS prolongation and the presence of QRS fragmentation (fQRS) has been previously studied in many chronic inflammatory disorders as an independent predictor of cardiac ...
Güven, İbrahim Ethem, Candemir, Mustafa   +1 more
openaire   +2 more sources