Results 111 to 120 of about 42,441 (299)

Intermediate-Term Risk of Stroke Following Cardiac Procedures in a Nationally Representative Data Set. [PDF]

, 2017
BACKGROUND: Studies on stroke risk following cardiac procedures addressed only perioperative and long-term risk following limited higher-risk procedures, were poorly generalizable, and often failed to stratify by stroke type. We calculated stroke risk in
Dhamoon, Amit S., Dhamoon, Mandip S., Liang, John W., Stein, Laura, Thaler, Alison, Tuhrim, Stanley   +5 more
core   +2 more sources

Soft and Adhesive Cardiac Patch for Electrophysiological and Contraction Measurement

Advanced Science, EarlyView.
This study developed an epicardial electronic patch with a modulus similar to that of the heart (approximately 65kPa), which can collect stable electrocardiogram signals and myocardial contractility on the surface of a dynamically beating heart. This is attributed to the hydrogen bond interaction formed between the amino and catechol groups in the ...
Wuliang Chen, Xinyu Shen, Hanning Liu, Lamei Du, Caicai Jiao, Longfei Li, Qian Wang, Qiuting Zhang, Lixue Tang, Liang Hu, Yubo Fan   +10 more
wiley   +1 more source

RF communication with implantable wireless device: effects of beating heart on performance of miniature antenna [PDF]

, 2014
The frequency response of an implantable antenna is key to the performance of a wireless implantable sensor. If the antenna detunes significantly, there are substantial power losses resulting in loss of accuracy.
Bahmanyar, MR, Borghi, A, McLeod, CN, Murphy, OH, Navaratnarajah, M, Toumazou, C, Yacoub, M   +6 more
core   +1 more source

Left Ventricular Assist Devices Are Underutilized [PDF]

Circulation, 2011
Heart failure has become one of the fastest growing cardiovascular diagnoses, with estimates as high as 500 000 new cases per year.1,2 This growth is in part a result of the reductions in death from acute coronary syndromes, increased use of implantable cardioverter defibrillators, and improved survival with most cardiovascular interventions, which ...
openaire   +2 more sources

Synchronization‐Dissipation in the Cardiorespiratory System

Advanced Science, EarlyView.
By modeling central nervous coupling and viscoelastic interactions in the cardiorespiratory system we show that synchronization produces a 10% gain in cardiac efficiency in humans. It is surmised that respiratory sinus arrhythmia improves cardiac pumping efficiency by reducing dynamic stress and power dissipation in the pulmonary vasculature.
Joshua R. Border, Alain Nogaret, Andrew Lefevre, Vishal Jain   +3 more
wiley   +1 more source

Anaerobic Bacteremias in Left Ventricular Assist Devices and Advanced Heart Failure

Case Reports in Infectious Diseases, 2019
Left ventricular assisted devices (LVADs) have revolutionized the treatment of advanced heart failure, providing meaningful increases in survival, functional capacity, and quality of life.
David R. Murillo-Garcia, Julian Galindo, Natalia Pinto, Gabriel Motoa, Esther Benamu, Carlos Franco-Paredes, Daniel B. Chastain, Andrés F. Henao-Martínez   +7 more
doaj   +1 more source

Gel‐Amin for Improving Extracellular Recordings of Cardiomyocytes in a 3D Microphysiological System

Advanced Electronic Materials, EarlyView.
This work combines a conductive collagen‐based hydrogel with a laser‐cut and assembly technique to fabricate microphysiological systems that improve extracellular recordings of cardiomyocytes in 3D on microelectrode arrays. The inclusion of choline acrylate into GelMA imparts a higher electrical conductivity and improves the signal‐to‐noise ratio of on‐
Dominic Pizzarella, Katelyn Neuman, Nolan Burson, Abigail N. Koppes, Ryan A. Koppes   +4 more
wiley   +1 more source

Quasi-static imaged-based immersed boundary-finite element model of human left ventricle in diastole [PDF]

, 2014
SUMMARY: Finite stress and strain analyses of the heart provide insight into the biomechanics of myocardial function and dysfunction. Herein, we describe progress toward dynamic patient-specific models of the left ventricle using an immersed boundary ...
Balay, Belytschko, Boffi, Colella, Costa, de Vecchi, Dokos, Fai, Gresho, Griffith, Griffith, Griffith, Griffith, Griffith, Griffith, Guccione, Göktepe, Heltai, Holzapfel, Hornung, Kim, Kim, Kirk, Klotz, Kovács, Krishnamurthy, Lai, LeGrice, Liu, Luo, Ma, May-Newman, McCormick, McQueen, McQueen, McQueen, Mori, Nash, Niederer, Nordsletten, Ogden, Omens, Peskin, Peskin, Potse, Rider, Shmuylovich, Smith, Stevens, Szabó, Usyk, Vetter, Wang, Wang, Watanabe, Wenk, Zhang, Zhang, Zhu, Zile   +59 more
core   +1 more source

Chronic Disease Monitoring Using Advanced Compliant Materials for Bioelectronics

Advanced Electronic Materials, EarlyView.
Compliant bioelectronic systems enable continuous monitoring of chronic disease through soft, stretchable materials and tissue‐conformal designs that support stable electrophysiological, mechanical, and biochemical sensing. Integration of diverse sensing modalities with thoughtful material selection, device architectures, and advanced fabrication ...
Han Kim, Mabel Bartlett, Liyang Wang, Karl Bates, Mengdi He, Myungbo Kim, Carmel Majidi, Tzahi Cohen‐Karni   +7 more
wiley   +1 more source

Illuminating the Intracellular World: Breakthroughs in Nanoscale Optoelectronics

Advanced Electronic Materials, EarlyView.
This perspective explores optoelectronic biointerfaces spanning macroscale flexible devices to nanoscale intracellular systems, emphasizing their integration across dimensions. It examines capacitive, Faradaic, and photothermal mechanisms that enable light‐driven control of cellular activity and highlights key material and design challenges in ...
Tania Assaf, Menahem Y. Rotenberg
wiley   +1 more source