Results 81 to 90 of about 27,892 (298)

Left Ventricular Assist Devices – Past, Present, and Future: A Narrative Review

Journal of the Practice of Cardiovascular Sciences
Advanced heart failure (AHF) is a major problem with an aging population and profound unmet needs. While heart transplant offers the most definitive solution, it is largely unavailable for most and mandates a long waiting period.
Devesh Kumar, Sandeep Seth, Rajiv Narang
doaj   +1 more source

Percutaneous ventricular assist devices for cardiogenic shock

, 2008
Cardiogenic shock complicates up to 7% of ST-segment elevation myocardial infarctions and 2.5% of non-ST-segment elevation myocardial infarctions, with an associated mortality of 50% to 70%.
Windecker, Stephan, Cook, Stéphane
core  

Non-invasive assessment of arterial pulsatility in patients with continuous-flow left ventricular assist devices

, 2019
Introduction: Long-term use of continuous-flow left ventricular assist devices may have negative consequences for autonomic, cardiovascular and gastrointestinal function.
Fabian, Vratislav, Johnson, Bruce D, Maltais, Simon, Sajgalik, Pavol, Kushwaha, Sudhir S, Matera, Lukas, Schirger, John A, Cross, Troy J, Stulak, John M   +8 more
core   +1 more source

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

Implantation of Short-Term and Long-Term Right Ventricular Assist Devices

Brazilian Journal of Cardiovascular Surgery
The last decade has seen considerable growth in the use of left ventricular assist devices (LVAD), in end-phase heart failure treatment. The indications, contraindications and implantation techniques are well-defined.
Christiano Castello Branco Caldeira, Regimar Carla Machado, Debora Castello Branco Caldeira   +2 more
doaj   +1 more source

Ophthalmic Surgery in Patients with Left Ventricular Assist Devices

Case Reports in Ophthalmological Medicine, 2019
The newer generation of left ventricular assist devices (LVADs) are commonly used as destination therapy; these devices have demonstrated improved outcomes and increased survival.
George A. Dumas, Ayesha S. Bryant, Gwendolyn L. Boyd   +2 more
doaj   +1 more source

Lumped-Parameter Modelling of Cardiovascular System Dynamics under Different Healthy and Diseased Conditions [PDF]

, 2013
Cardiovascular disease is the most common cause of death in the modern society, and research into the diagnosis and treatment of cardiovascular diseases is an urgent task.
Shi, Yubing
core  

A robust reference signal generator for synchronized ventricular assist devices

, 2013
Ventricular assist devices (VADs) are blood pumps that offer an option to support the circulation of patients with severe heart failure. Since a failing heart has a remaining pump function, its interaction with the VAD influences the hemodynamics ...
Amacher, Raffael, Ochsner, Gregor, Daners, Marianne Schmid, Ferreira, Antonio, Vandenberghe, Stijn   +4 more
core   +1 more source

In Vitro Hemocompatibility Evaluation of Modified Rotary Left to Right Ventricular Assist Devices in Pulmonary Flow Conditions

, 2020
Right ventricular failure is a common postoperative com-plication following left ventricular assist device (LVAD) im-plantation. Left ventricular assist devices are adapted for right ventricular assist device (RVAD) support by reducing the right pump ...
Andrew Stephens, Michael J. Simmonds, Tansley, Geoff, Nicoletta Balletti, Gregory, Shaun D, Geoff Tansley, Wu, Eric Lee-Jan, Jo P. Pauls, Chan, Chris Hoi Houng, Horobin, Jarod, John F. Fraser, Bouquet, Mahe, Chris Hoi Houng Chan, Nandakumar, Deepika, Pauls, Jo P, Stephens, Andrew, Mahe Bouquet, Balletti, Nicoletta, Shaun D. Gregory, Jarod Horobin, Deepika Nandakumar, Eric Lee-Jan Wu, Fraser, John F, Simmonds, Michael J   +23 more
core   +1 more source

Topologically Structured PLLA Fibers With Stress Concentration Effects for Health Monitoring

Advanced Science, EarlyView.
In this study, a multi‐path strategy was developed to enhance the piezoelectric properties of PLLA fibers through the stress concentration effect. The optimized devices generate piezoelectric output up to 14 times that of pure PLLA fibers. This piezoelectric enhancement strategy offers a new approach for high‐performance piezoelectric devices, with ...
Longfei Li, Juwei Yang, Yiqian Wang, Qiao Yu, Zhenmin Fan, Chang Zhu, Ming Yin, Wei Hua, Zhou Li   +8 more
wiley   +1 more source