Sentences with phrase «mechanical valves»

Beyond the differences in mortality, patients receiving mechanical valves had a lower risk for repeat operations but had an increased risk of bleeding.

Envisioned as a race car available from the factory, the L88 came with aluminum heads with enlarged valves, a forged cross-drilled crankshaft, a radical cam with mechanical valve lifters, a massive Holley carburetor, a lightweight Harrison cross-flow radiator, high - compression aluminum pistons, and special spark plugs and ignition wires.

Mechanical valves practically last forever, but the disadvantage is that patients have to take a blood thinner to prevent blood clots.

The analysis included 4,253 patients ages 50 to 69 years who underwent primary isolated aortic valve replacement using bioprosthetic vs mechanical valves in New York State from 1997 through 2004.

Biological valves are increasingly favored over mechanical valves, which must be surgically implanted and require long - term use of anti-coagulation drugs to protect against blood clots.

The researchers view their system as an alternative to the microfluidic devices now commonly used in biological research, in which biological solutions are pumped through microscopic channels connected by mechanical valves.

However, when the tissue is too damaged, a replacement valve may be used from another human heart, an animal or a manufactured mechanical valve.»

We see higher table ratings for mechanical valve replacement patients taking blood thinners too.

Recent work with mechanical valves that modulate the incoming propellant flow at specific frequencies to dampen instability provided the background for current research at UAH's Propulsion Research Center.

There are mechanical valves, and there are tissue valves.

Surgical aortic valve replacements increasingly use bioprosthesis (composed of biological tissue) implants rather than mechanical valves.

Mechanical valves are recommended in persons younger than 50 years of age, biologic valves in persons older than 70 years of age, and either type is considered reasonable for persons 50 to 70 years of age.

Patients receiving mechanical valves had better survival up until age 70 if the mitral - valve was replaced; patients receiving mechanical valves had better survival up until age 55 if the aortic - valve was replaced.

In the late 1990s, sources indicate he had a valve transplant made from his own tissue, rather than a mechanical valve.

Learn about two types of replacement valves: tissue and mechanical valves.

While the four overhead camshafts are still driven by spur wheels, pneumatic actuators replaced the mechanical valve springs.

It uses shocks controlled by advanced magneto - rheological technology, rather than mechanical valves, to greatly accelerate response time and precision.

To achieve high engine speeds, the mechanical valve springs have been replaced by pneumatic valve springs.

It uses shocks controlled by electro - magnets, rather than mechanical valves, greatly accelerating response time.

Blood thinners (warfarin, heparin) are par for the course with a mechanical valve.

Though the bio-prosthetic valve might be replaced in 10 — 15 years, the mechanical valve will need blood thinning medication.

Handles responsibilities of testing electro - mechanical valves and building mechanical measuring instruments

Assist Mechanical department in troubleshooting and repairing various Electro / mechanical valves and switches.