Results 31 to 40 of about 1,526,722 (293)

Non-linear finite element analyses of the aortic heart valve [PDF]

open access: yes, 2004
Includes bibliographical references.Finite element models of the aortic heart valve have been successfully used in the past to gain insight into the mechanics of the valve and to aid in understanding of valve failure.
Koch, Thorsten M
core   +1 more source

Optimization of anticoagulant therapy in patients undergoing mechanical heart valve replacement

open access: yesФундаментальная и клиническая медицина, 2023
Acquired heart defects have a high prevalence among patients of different age groups and represent a significant social problem. To date, surgery remains the only effective option to treat acquired heart disease, and replacement of the dysfunctional ...
S. A. Tkachenko   +7 more
doaj   +1 more source

Echocardiography Aided by Computed Tomography to Diagnose Obstructive Masses in Patients with Prosthetic Heart Valves

open access: yes, 2020
To the Editor: We appreciate Kealhofer and colleagues’ report on their beneficial use of cardiac computed tomography (CT) for evaluating prosthetic aortic valve dysfunction.1 We want to contribute further by drawing attention to the role of cardiac CT in
Güner, Ahmet   +3 more
core   +1 more source

Sixteen year retrospective analysis of rheumatic and non-rheumatic heart disease patients undergoing valve procedures at Groote Schuur Hospital first incidence single aortic and mitral valve replacement [PDF]

open access: yes, 2012
Includes abstract.Includes bibliographical references.Rheumatic heart disease is still the most common cause of valvular heart lesions requiring replacement or repair procedures worldwide.
Ogunrombi, Akinwumi Babatunde
core   +1 more source

An Efficient Immersed Boundary Method for Solving the Unsteady Flow through Actual Geometries of Reed Valves [PDF]

open access: yes, 2012
In refrigeration compressors, the suction and discharge valves are responsible for the retention of the refrigerant from the suction chamber to the cylinder and passage from the cylinder to the discharge chamber.
Barbi, Franco   +2 more
core   +1 more source

The pathology of fresh and cryopreserved homograft heart valves: An analysis of forty explanted homograft valves [PDF]

open access: yes, 2002
Objective: Tissue degeneration reduces the durability of aortic and pulmonary homograft heart valves. Homograft valves can evoke cellular and humoral immune responses that might be detrimental to the valve tissue.
Koolbergen, David R.   +6 more
core   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

open access: yesFEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

open access: yesFEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas   +6 more
wiley   +1 more source

Recent advancements in polymeric heart valves: From basic research to clinical trials

open access: yesMaterials Today Bio
Valvular heart diseases (VHDs) have become one of the most prevalent heart diseases worldwide, and prosthetic valve replacement is one of the effective treatments. With the fast development of minimal invasive technology, transcatheter valves replacement
Yuanchi Wang   +5 more
doaj   +1 more source

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