Results 41 to 50 of about 1,525,667 (253)

Development of methods for the tissue engineering of cardiac valves using mesenchymal stem cells [PDF]

, 2004
Cardiac valve replacement is the second most common heart operation in the Western World. Valve replacements currently available are poorly adapted for use in young patients who typically require multiple re-operations as they grow, resulting in ...
Knight, Richard Lewis
core   +5 more sources

Indications for echocardiography of replacement heart valves: a joint statement from the British Heart Valve Society and British Society of Echocardiography

Echo Research and Practice, 2019
Echocardiography plays a vital role in the follow-up of patients with replacement heart valves. However, there is considerable variation in international guidelines regarding the recommended time points after implantation at which routine ...
John B Chambers, Madalina Garbi, Norman Briffa, Vishal Sharma, Richard P Steeds   +4 more
doaj   +1 more source

Intelligent Micro/Nanorobots for Targeted Interventional Therapy: From Bench to Clinic

Advanced Robotics Research, EarlyView.
Zirui Zhang et al. reviewed the application and challenges of mobile nanomachines in interventional therapy. By converting exogenous energy, including chemical, magnetic, optical, and ultrasonic sources, into mechanical forces, micro/nanorobots (MNRs) enable precise actuation at unprecedented scales. Evolving far beyond traditional drug delivery, these
Zirui Zhang, Yu Dong, Yongsheng Du, Rui Gao, Lin Zhang, Fei Tong   +5 more
wiley   +1 more source

A chronological history of heart valve prostheses to offer perspectives of their limitations

Frontiers in Bioengineering and Biotechnology
Prosthetic heart valves (PHV) have been studied for around 70 years. They are the best alternative to save the life of patients with cardiac valve diseases. However, current PHVs may still cause significant disadvantages to patients.
Raquel Ahnert Aguiar Evangelista, Ana Luiza Resende Pires, Breno Valentim Nogueira, Breno Valentim Nogueira   +3 more
doaj   +1 more source

Patient Prosthesis Mismatch After SAVR and TAVR

Frontiers in Cardiovascular Medicine, 2022
Patient-prosthesis mismatch (PPM) remains one out of many factors to be considered during decision-making for the treatment of aortic valve pathologies. The idea of adequate sizing of a prosthetic heart valve was established by Rahimtoola already in 1978.
Sabine Bleiziffer, Tanja K. Rudolph
doaj   +1 more source

Multidimensional and Multifunctional Laser‐Induced Graphene (LIG) for Point‐of‐Care and Wearable Biosensing, Theranostics, and Bioactive Interfaces Toward Personalized Healthcare and Regenerative Medicine

Advanced Science, EarlyView.
Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang, Yurou Yuan, Xiaohong Ding, Wing Cheung Mak   +3 more
wiley   +1 more source

Impact of iron hydroxide (III) on level of postoperative anemia in patients with combined mitral and aortal heart failures

Клінічна хірургія, 2020
Objective. To investigate a combined impact of iron hydroxide (III) on the anemia level after prosthesis of mitral and aortal valves in accordance to the blood-preserving technology in conditions of artificial blood circulation. Materials and methods.
B. M. Gumenyuk
doaj   +1 more source

Aortic valve replacement in sheep with a novel trileaflet mechanical heart valve prosthesis without anticoagulationCentral MessagePerspective

JTCVS Open, 2021
Background: Even after decades of intensive research, an ideal heart valve prosthesis remains elusive. Shortcomings of conventional devices include reduced durability of bioprostheses and the thrombogenicity of mechanical substitutes, necessitating ...
Tim Schaller, MSc, Michael Scharfschwerdt, PhD, Kathrin Schubert, MSc, Cornelia Prinz, PhD, Ulrich Lembke, PhD, Hans-Hinrich Sievers, MD   +5 more
doaj   +1 more source

Bioinspired Passive Flow Routing to Mitigate Thrombosis in Prosthetic Heart Valves and Cardiovascular Devices

Advanced Science, EarlyView.
Bioinspired passive flow routing mitigates thrombosis in cardiovascular devices by redirecting a small fraction of forward flow into stagnation‐prone regions. Inspired by avian alula and aircraft slat mechanisms, strategically placed routing channels restore washout around mechanical heart valves, reducing low‐shear exposure by four orders of magnitude
Yevgeniy Kreinin, Mark Epshtein, Yahel Talmon, Tirosh Mekler, Itay Or, Mahli Raad, Gil Bolotin, Josué Sznitman, Netanel Korin   +8 more
wiley   +1 more source

Implante de bioprótese aórtica "stentless" em pacientes com alterações do anel aórtico Aortic valve replacement with a stentless bioprosthesis in patients with weakened aortic annulus

Brazilian Journal of Cardiovascular Surgery, 1993
Dezessete pacientes portadores de doença da valva aórtica associada a alterações estruturais do anel aórtico foram submetidos a implante de bioprótese aórtica "stentless" (Biocór): 8 pacientes eram portadores de endocardite bacteriana, sendo 3 em valva ...
Bayard Gontijo Filho, Mário O Vrandecic, Fernando Antônio Fantini, Juscelino Teixeira Barbosa, João Alfredo de Paula e Silva, Sandra S Avelar, Leonardo F Drumond, Cristiana Gutierrez   +7 more
doaj