Results 41 to 50 of about 176,601 (305)

Improved costs and outcomes with conscious sedation vs general anesthesia in TAVR patients: Time to wake up? [PDF]

open access: yes, 2017
BackgroundTranscatheter aortic valve replacement (TAVR) has become a commonplace procedure for the treatment of aortic stenosis in higher risk surgical patients.
Aksoy, Olcay   +10 more
core   +7 more sources

Relationship between fibre orientation and tensile strength of natural collagen membranes for heart valve leaflets [PDF]

open access: yes, 2011
Heart valve prostheses are used to replace native heart valves which that are damaged because of congenital diseases or due to ageing. Biological prostheses made of bovine pericardium are similar to native valves and do not require any anticoagulation ...
Alvarez, L.   +5 more
core   +1 more source

Response to Allopurinol and Febuxostat According to the Fractional Excretion of Urate in Men With Gout

open access: yesArthritis Care &Research, EarlyView.
Objective Body mass index (BMI), glomerular filtration rate (GFR), and pretreatment urate levels have been reported to influence the urate‐lowering response to allopurinol. We investigated whether the fractional excretion of uric acid (FEUA) also modulates this response and relates to oxypurinol concentrations.
Pascal Richette   +13 more
wiley   +1 more source

Nanopatterned acellular valve conduits drive the commitment of blood-derived multipotent cells [PDF]

open access: yes, 2016
Considerable progress has been made in recent years toward elucidating the correlation among nanoscale topography, mechanical properties, and biological behavior of cardiac valve substitutes.
Aguiari, Paola   +11 more
core   +2 more sources

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann   +3 more
wiley   +1 more source

Inhibition of MAPK-Erk pathway in vivo attenuates aortic valve disease processes in Emilin1-deficient mouse model [PDF]

open access: yes, 2017
Aortic valve disease (AVD) is a common condition with a progressive natural history, and presently, there are no pharmacologic treatment strategies. Elastic fiber fragmentation (EFF) is a hallmark of AVD, and increasing evidence implicates developmental ...
Aikawa   +45 more
core   +2 more sources

Four Artificial Heart Valves [PDF]

open access: yesNew England Journal of Medicine, 2005
A 67-year-old woman reported having progressive shortness of breath over several months, three years after undergoing aortic-valve replacement for aortic insufficiency. The patient had migraine headaches for which she had received 2 mg of ergotamine tartrate daily for many years. On physical examination, her blood pressure was 170/95 mm Hg.
Bijl, M., van den Brink, R.B.A.
openaire   +4 more sources

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann   +3 more
wiley   +1 more source

Midterm outcomes of mechanical versus bioprosthetic valve replacement in middle-aged patients: An Indian scenario

open access: yesHeart India, 2017
Objective: The goal of this study is to evaluate and compare the midterm outcomes of bioprosthetic heart valve replacement in terms of survival, valve-related events, quality of life, and economic aspects of treatment in population age 45 years and above
Dheeraj Sharma   +3 more
doaj   +1 more source

Which Biological Properties of Heart Valves Are Relevant to Tissue Engineering?

open access: yesFrontiers in Cardiovascular Medicine, 2020
Over the last 20 years, the designs of tissue engineered heart valves have evolved considerably. An initial focus on replicating the mechanical and structural features of semilunar valves has expanded to endeavors to mimic the biological behavior of ...
Adrian H. Chester, K. Jane Grande-Allen
doaj   +1 more source

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