Results 71 to 80 of about 398,963 (376)

Acute left ventricular dysfunction secondary to right ventricular septal pacing in a woman with initial preserved contractility: a case report [PDF]

, 2011
Introduction Right ventricular apical pacing-related heart failure is reported in some patients after long-term pacing. The exact mechanism is not yet clear but may be related to left ventricular dyssynchrony induced by right ventricular apical pacing ...
AC Ng, AD McGavigan, Afef Lagren, BL Wilkoff, C Leclercq, CJ Höijer, CM Yu, CW Siu, Elyes Neffeti, Essia Boughzela, Fahmi Remedi, HF Tse, HG Mond, JW Fung, LF Tops, R Lieberman, Rim Gribaa, S Sagar, Sana Ouali, Slim Kacem, Soufiene Azzez, TJ ten Cate, XH Zhang   +22 more
core   +3 more sources

Revisiting the relationship between left ventricular ejection fraction and ventricular–arterial coupling [PDF]

ESC Heart Failure, 2020
AbstractThe aim of this article was to analyse in‐depth the relationship between left ventricular (LV) ejection fraction (EF) (LVEF) and the most commonly used formulas for the calculation of LV elastance (Ees), volume intercept at 0 mmHg pressure (V0), effective arterial elastance (Ea), and ventricular–arterial coupling (VAC) as are validated today ...
Elena-Laura Antohi, Serban Mihaileanu
openaire   +4 more sources

Ischemic Myocardium Targeting Peptide‐Guided Nanobubbles for Multimodal Imaging and Treatment of Coronary Microvascular Dysfunction

Advanced Healthcare Materials, EarlyView.
Nanobubbles functionalized with indocyanine green and ischemic myocardium‐targeting peptide effectively target cardiomyocytes and enable the multimodal (fluorescence, ultrasonic, and photoacoustic) imaging of ischemic myocardium in mice with coronary microvascular dysfunction (CMD).
Bo Yu, Ziwei Pang, Jing Zhao, Jingyi Xue, Hsuan Lo, Tiancheng Gu, Ping Zhang, Jiawei Tian, Guo‐Qing Du   +8 more
wiley   +1 more source

Age‐related changes in the coronary microcirculation influencing the diagnostic performance of invasive pressure‐based indices and long‐term patient prognosis

Catheterization and Cardiovascular Interventions, Volume 100, Issue 7, Page 1195-1205, December 1, 2022., 2022
Abstract Objectives Investigate age‐related changes in coronary microvascular function, its effect on hyperemic and non‐hyperemic indices of stenosis relevance, and its prognostic implications. Background Evidence assessing the effect of age on fractional flow reserve (FFR), resting mean distal intracoronary pressure/mean aortic pressure (Pd/Pa), and ...
Daniel Faria, Hernan Mejia‐Renteria, Joo Myung Lee, Seung Hun Lee, Alejandro Travieso, Ji‐Hyun Jung, Joon‐Hyung Doh, Chang‐Wook Nam, Eun‐Seok Shin, Masahiro Hoshino, Tomoyo Sugiyama, Yoshihisa Kanaji, Nieves Gonzalo, Tsunekazu Kakuta, Bon‐Kwon Koo, Javier Escaned   +15 more
wiley   +1 more source

Benefits of Permanent His Bundle Pacing Combined With Atrioventricular Node Ablation in Atrial Fibrillation Patients With Heart Failure With Both Preserved and Reduced Left Ventricular Ejection Fraction

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2017
BackgroundClinical benefits from His bundle pacing (HBP) in heart failure patients with preserved and reduced left ventricular ejection fraction are still inconclusive.
Weijian Huang, Lan Su, Shengjie Wu, Lei Xu, Fangyi Xiao, Xiaohong Zhou, Kenneth A. Ellenbogen   +6 more
doaj   +1 more source

Cardiac Organoid Model Inspired Micro‐Robot Smart Patch to Treat Myocardial Infarction

Advanced Materials, EarlyView.
The heart organoid model exhibits the acidic microenvironment characteristic of myocardial infarction, which emerges as a pivotal force propelling the movement of micro‐robots. These micro‐robots, administered through microneedles, can penetrate deep into the tissue, effectively delivering therapeutic payloads to facilitate heart repair.
Fangfang Wang, Zilu Xu, Feiyang Zheng, Dongcheng Yang, Kaige Xu, Ming Ke, Xiao Zhou, Xiaohan Zhang, Ju Tan, Yong Liu, Yansha Hao, Malcolm Xing, Chuhong Zhu   +12 more
wiley   +1 more source

Coronary angiography of the ex‐situ beating donor heart in a portable organ care system

Catheterization and Cardiovascular Interventions, Volume 100, Issue 7, Page 1252-1260, December 1, 2022., 2022
Abstract Objectives To determine safety and feasibility of ex‐situ coronary angiography. Background To cater for the perpetually growing demand for heart donors, interest in donation following circulatory death (DCD) has been rekindled. Further pursuit of donor pool expansion has led to eligibility extension to “marginal” donors who are at higher risk ...
Thomas Meredith, Sarah Scheuer, Michael Hoffman, Yashutosh Joshi, Krishna Kathir, Brendan Gunalingam, David Roy, Stephanie Wilson, Paul Jansz, Peter Macdonald, David Muller   +10 more
wiley   +1 more source

Fine-tuning pre-trained extractive QA models for clinical document parsing [PDF]

arXiv, 2023
Electronic health records (EHRs) contain a vast amount of high-dimensional multi-modal data that can accurately represent a patient's medical history. Unfortunately, most of this data is either unstructured or semi-structured, rendering it unsuitable for real-time and retrospective analyses.
arxiv  

The Impact of Myocardial Infarction on Ventricular Function [PDF]

, 1990
Eighty one patients were studied using radionuclide ventriculography to study the effects of myocardial infarction (36 anterior and 45 inferior) on ventricular function during the early and convalescent phases.
McGhie, Arthur Iain
core  

Hyperdynamic left ventricular ejection fraction in the intensive care unit [PDF]

Critical Care, 2015
Abstract Introduction Limited information exists on the etiology, prevalence, and significance of hyperdynamic left ventricular ejection fraction (HDLVEF) in the intensive care unit (ICU). Our aim in the present study was to compare characteristics and outcomes of patients with HDLVEF with those of patients with normal ...
Leo Anthony Celi, Leo Anthony Celi, Leo Anthony Celi, Thomas Brennan, Joseph R. Paonessa, Joseph R. Paonessa, Mengling Feng, Daniel Steinhaus, Daniel Steinhaus, Marco A. F. Pimentel   +9 more
openaire   +4 more sources