Results 71 to 80 of about 193,787 (386)

Ventricular arrhythmias in young competitive athletes: Prevalence, determinants, and underlying substrate [PDF]

, 2018
Whether ventricular arrhythmias (VAs) represent a feature of the adaptive changes of the athlete's heart remains elusive. We aimed to assess the prevalence, determinants, and underlying substrates of VAs in young competitive athletes.Background--Whether ...
Badano, Luigi Paolo, Bellu, Roberto, Berton, Giampaolo, Cipriani, Alberto, Corrado, Domenico, D'Ascenzi, Flavio, De Lazzari, Manuel, Iliceto, Sabino, Mastella, Giulio, Muraru, Denisa, Niero, Alice, Palermo, Chiara, Perazzolo Marra, Martina, Peruzza, Francesco, Portolan, Leonardo, Schiavon, Maurizio, Sciacca, Federco, Tollot, Saverio, Trovato, Domenico, Zorzi, Alessandro   +19 more
core   +2 more sources

Sol–Gel Synthesis of Ca2.5Ag0.3Sm0.2Co4O9 Semiconducting Materials for Thermoelectric Applications in Aerospace Systems

Advanced Engineering Materials, EarlyView.
Ca2.5Ag0.3Sm0.2Co4O9 semiconductor materials are synthesized and produced in this study using the sol–gel and cold pressing techniques for thermoelectric generator applications. As template samples are added, the Seebeck coefficient and power factor values rise, peaking at 800 °C for Ca2.5Ag0.3Sm0.2Co4O9 at 274.47 μV K−1 and 0.58 mW mK−2, respectively.
Enes Kilinc, Fatih Uysal, Mucahit Abdullah Sari, Huseyin Kurt, Erdal Celik   +4 more
wiley   +1 more source

Possible Involvement of Coronary Microvascular Dysfunction in Painful Left Bundle Branch Block

JACC: Case Reports, 2023
Cases of painful left bundle branch block syndrome have been reported; however, the pathophysiology of chest pain remains unclear. Here, we report a patient with left bundle branch block and chest pain.
Naoya Inoue, MD, Yumiko Joko, MD, Shuji Morikawa, MD   +2 more
doaj  

A case of infra-nodal Wenckebach conduction block with alternating bundle branch block

International Journal of Arrhythmia, 2021
Background Atrioventricular (AV) node normally has decremental conduction property and a longer refractory period than His-Purkinje system (HPS). This results in AV conduction delay or block at the level of AV node in response to short-coupled atrial ...
Pichmanil Khmao, Chun Hwang, Hui-Nam Pak
doaj   +1 more source

Quantification of cardiac conduction abnormalities using segmental vector fourier analysis of radionuclide gated blood pool scans [PDF]

, 1983
Timing abnormalities of myocardial contractility may occur as inter- or intraventricular asynchrony. Gated blood pool scintigraphy was performed on 21 patients with a normal ejection fraction and the following electrocardiograms: six normal, six with ...
Goldman, Martin E., Goldsmith, Stanley J., Horowitz, Steven F., Lee, Kenneth, Machac, Josef, Miceli, Kenneth, Pollack, Brian, Teichholz, Louis E.   +7 more
core   +1 more source

3D Bioprinting of Thick Adipose Tissues with Integrated Vascular Hierarchies

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
An advanced 3D bioprinting technique is used here to create thick adipose tissues with a central, vessel and extensive branching. The construct is made using alginate, gelatin and collagen‐based bioinks. Flow through the complex vessel network is demonstrated as well as its successful integration with a femoral artery following implantation in a rat ...
Idit Goldfracht, Majd Machour, Inbal Michael, Maria Bulatova, Janette Zavin, Shulamit Levenberg   +5 more
wiley   +1 more source

How to Implant His Bundle and Left Bundle Pacing Leads: Tips and Pearls

Cardiac Failure Review, 2021
Cardiac pacing is the treatment of choice for the management of patients with bradycardia. Although right ventricular apical pacing is the standard therapy, it is associated with an increased risk of pacing-induced cardiomyopathy and heart failure ...
Shunmuga Sundaram Ponnusamy, Pugazhendhi Vijayaraman   +1 more
doaj   +1 more source

Transient unexpected improvement of AV conduction: What is the mechanism? [PDF]

, 2006
This ECG was recorded from a 93 year old patient with a previously documented third degree AV block and an underlying LBBB. The twelve lead ECG demonstrates sinus bradycardia at a rate of 52 beats per minute, a PR interval of 230 milliseconds, and a ...
Friedman, Meir, Schweitzer, Paul
core   +2 more sources

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Case Report: Left bundle branch pacing in an amyloid light-chain cardiac amyloidosis patient with atrioventricular block

Frontiers in Cardiovascular Medicine
IntroductionAmyloid light-chain cardiac amyloidosis is a progressive infiltrative disease characterized by the deposition of amyloid fibrils in the cardiac tissue, which can cause serious atrioventricular block requiring pacemaker implantation.
Jiaqi Yu, Fanyi Kong, Peng Gao, Taibo Chen, Yongtai Liu, Zhongwei Cheng, Hua Deng, Jinzhi Lai, Lihua Zhang, Jingbo Fan, Jiaqi Wang, Xiaohan Qin, Keyue Sun, Jian Li, Quan Fang, Deyan Yang, Kang’an Cheng   +16 more
doaj   +1 more source