Results 61 to 70 of about 15,817 (237)

Heart phantom with electrical properties of heart muscle tissue

Current Directions in Biomedical Engineering, 2018
The weakened heart is supported by a left ventricular assist device (LVAD) to supply the heart muscle with oxygenated blood. In case the heart muscle recovers during LVAD therapy, the patient has to be weaned from the device.
Korn Leonie, Lyra Simon, Rüschen Daniel, Pugovkin Alexander, Telyshev Dmitry, Leonhardt Steffen, Walter Marian   +6 more
doaj   +1 more source

Validity and reliability of the left ventricular assist device self-care behaviour scale.

PLoS ONE, 2023
BackgroundAdequate self-care behaviour is essential for patients with a left ventricular assist device (LVAD) to prevent complications, prolong life, and optimise quality of life. However, there were no valid and reliable measurements available to assess
Naoko P Kato, Semyon Melnikov, Quin E Denfeld, Jesus Casida, Anna Strömberg, Tuvia Ben-Gal, Christopher S Lee, Tiny Jaarsma   +7 more
doaj   +1 more source

Comparison of Intraoperative Doppler Flow Measurements and Algorithmic Flow Estimations in Patients Undergoing Durable Left Ventricular Assist Device Implantation

Artificial Organs, EarlyView.
Direct intraoperative HeartMate 3 LVAD flow measurements using an ultrasonic probe revealed consistently higher values by approximately 0.5 L/min compared to device‐estimated flows. This discrepancy remained stable across pump speed settings, highlighting the importance of distinguishing measured from estimated flow in HeartMate 3 patients.
Gaik Nersesian, Anna Stegmann, Daniel Lewin, Yuriy Hrytsyna, Leonard Pitts, Julius Kaemmel, Marian Kukucka, Alexander Mladenow, Lisa Garczarek, Julia Stein, Friedrich Kaufmann, Volkmar Falk, Evgenij Potapov, Pia Lanmueller   +13 more
wiley   +1 more source

Mitral regurgitation changes after LVAD implantation: a numerical study.

, 2014
Aim: Although the left ventricular (LV) unloading due to LVAD, in some patients (PTs) with severe mitral regurgitation (MR) and severe LV and left atrium dilation,a suboptimal results of LVAD implantation, characterized by persistent relevant MR ...
Frigerio, Maria, Ferrari, Gianfranco, Di Molfetta, Arianna, Verde, Alessandro, Zielinski, Krzysztof, Trivella, Maria Giovanna, Palko, Krzysztof Jakub, Fresiello, Libera   +7 more
core   +1 more source

Recent Developments in Ventricular Assist Device Therapy

Reviews in Cardiovascular Medicine
The evolution of left ventricular assist devices (LVADs) from large, pulsatile systems to compact, continuous-flow pumps has significantly improved implantation outcomes and patient mobility. Minimally invasive surgical techniques have emerged that offer
Angel Moctezuma-Ramirez, Haseeb Mohammed, Austin Hughes, Abdelmotagaly Elgalad   +3 more
doaj   +1 more source

Comparison of a Miniaturized Implantable Two‐Stage Rotodynamic Blood Pump to Equivalent Single‐Stage Concepts

Artificial Organs, EarlyView.
This study aims to evaluate the potential of a multistage pump design to enhance hemocompatibility in left ventricular assist devices. We found that the two‐stage concept offers favorable hemolysis measures compared to single‐stage designs, as the reduction in peak shear stresses outweighs the disadvantage associated with prolonged residence time ...
Sarah Linnemeier, Bente Thamsen, Stefan Maric, Bernhard Semlitsch, Benjamin Torner, Daniel Zimpfer, Marcus Granegger   +6 more
wiley   +1 more source

Impact of centrifugal-flow left ventricular assist device implantation on the disease course, functional class, and quality of life in patients with end-stage heart failure with reduced ejection fraction. A 6-month follow-up experience

Российский кардиологический журнал
Aim. To study mortality, postoperative complications, clinical course, and quality of life of patients with heart failure (HF) within 6 months after left ventricular assist device (LVAD) implantation.Material and methods.
Zh. A. Shakhramanova, O Yu. Narusov, V. A. Amanatova, Yu. F. Osmolovskaya, K. G. Ganaev, A. A. Shiryaev, R. S. Akchurin, I. A. Merkulova, D. V. Pevsner, M. A. Saidova, S. N. Tereschenko   +10 more
doaj   +1 more source

Device‐Induced Blood Damage in Pump‐Assisted Circulation: A Comparative Study of HeartMate III and BrioVAD Pumps

Artificial Organs, EarlyView.
Shear‐induced blood damage—including hemolysis, platelet and neutrophil injury, and von Willebrand factor (vWF) degradation—was evaluated for the BrioVAD and HM3 using an in vitro circulatory loop under clinically relevant conditions. Across 15 biomarkers (n > 6 per group), no significant differences were observed between the two devices.
Wenji Sun, Kiersten P. Clark, Douglas Tran, John C. Vandenberge, Nancy Kim, Shigang Wang, Anik Tarafder, Randy Perez, Bartley P. Griffith, Dong Han   +9 more
wiley   +1 more source

The Role of Patients' Treatment Expectations in Ventricular Assist Device Support: Results From a Convergent Mixed Methods Study

Artificial Organs, EarlyView.
This mixed methods study aimed to: (i) identify treatment expectations held by individuals with a ventricular assist device (VAD), (ii) assess the extent to which these expectations have been met, and (iii) examine how treatment expectations relate to VAD‐specific health‐related quality of life (HRQoL) ABSTRACT Objectives Treatment expectations ...
Simon Felix Zerth, Bernd Niemann, Miriam Salzmann‐Djufri, Sandra Semmig‐Könze, Katharina Tigges‐Limmer, Yvonne Brocks, Monika Sadlonova, Anna Markser, Tanja Zimmermann, Lara Kristin Oldach, Stefan Salzmann   +10 more
wiley   +1 more source

How Formal and Informal Nurse Leaders Enact Shared Implementation Leadership in a Hospital Setting

Journal of Advanced Nursing, EarlyView.
ABSTRACT Aim To describe how implementation leadership manifests among formal and informal point of care nurse leaders during a successful evidence‐based practice implementation. Design A collective case study. Methods A conceptual framework on shared implementation leadership guided the study. Two units known for strong implementation were selected as
Sonia Angela Castiglione, Mélanie Lavoie‐Tremblay, Kelley Kilpatrick, Wendy Gifford, Sonia Elizabeth Semenic   +4 more
wiley   +1 more source