Heart disease occurs when plaque builds up within artery walls
blocking the blood flow through tissues in the body, increasing the risk of a heart attack or stroke.
In the final stages of heartworm disease, a large number of heartworms will
sometimes block blood flow to the heart almost completely.
They tend to
block blood flow in the blood vessels of the limbs and organs, causing pain, organ damage, and increased risk for infection.
If the
clot blocks blood flow in the lungs it's called a pulmonary embolism, which means blood and oxygen aren't reaching the rest of the body.
Jenkins points out another potential problem: Pieces of solidified foam could break off inside the body and go adrift in a patient's bloodstream,
eventually blocking blood flow to the legs or lungs.
Russell Stewart, a bioengineer at the University of Utah in Salt Lake City, is tapping into marine - dwelling sandcastle worms for a different glue goal: He wants to create a better embolic agent — a way to
deliberately block blood flow to certain tissues.
Arterial malformations are often treated by embolization, in which an injection near the
lesion blocks blood flow to the malformation
Embolization, during which a type of glue is inserted into the AVM to
block blood flow into it (Houston Methodist specialists use Onyx ®, a lava - like substance, and metal embolization coils to stop blood flow)
But during a heart attack or stroke, platelets form a clot that can
potentially block blood flow through our veins and arteries, a dangerous condition called thrombosis, which can deprive tissues of oxygen and lead to death.
Most strokes — about 85 % — occur when a clot or some other
obstruction blocks blood flow to (or within) the brain; these are known as ischemic strokes.
Because they are as wide as the small vessels, microfilariae can
easily block the blood flow and deprive cells of nutrients and oxygen.
I like to refer to the most common type of stroke as a brain attack, which is similar to a heart attack; the only difference is that the blood
clot blocks blood flow to your brain instead of your heart.
«Blood clots can develop in the veins in your legs and
block the blood flow in different parts of your body depending on where the clot travels,» explains Dr. Ross.
In the formation of an anastomosis, a magnet is placed in each side of the tube that is being surgically connected, and then the magnets are drawn together, compressing the tissue between them and
blocking blood flow.
In ischemic stroke, a clot
blocks blood flow to part of the brain, killing neurons in its wake.
Nitric Oxide protects the heart from damage caused by ischemia, or
blocked blood flow to heart tissue.
The device is guided through blood vessels to a clot that is
blocking blood flow to a part of the brain.
Most strokes are caused by blood clots that
block blood flow to the brain.
«Once a plaque ruptures, it can induce formation of a large clot that can
block blood flow to the downstream regions.
«At present, clinicians can remove clots
blocking blood flow to the brain if stroke patients reach hospital early enough,» explains Professor David Attwell of UCL's Department of Neuroscience, Physiology & Pharmacology, who led the study.
In all of these conditions, clots are located where they should not be and
block blood flow to critical parts of the body.
Most strokes are ischemic, meaning they are caused by blood clots that
block blood flow to areas of the brain.
Scientists know that the secondary strokes, called delayed cerebral ischemia (DCI), are caused by spasms in brain blood vessels that
block blood flow.
This causes the arteries to stiffen and crack, leading to plaque buildup that
blocks blood flow.
Water and dissolved gas in the blood forms bubbles in the major veins, which travel throughout the circulatory system and
block blood flow.
Once positioned next to the prostate, microscopic spheres are delivered to
block blood flow, causing the prostate to shrink.
Once there, the doctor uses microscopic beads to
block the blood flow to specific areas of the prostate, depriving those cells of oxygen, which results in the gland's shrinkage.
To test whether this affects the early heart, Hove's team used small beads to
block blood flow in the zebrafish heart at 37 hours, when the heart is little more than a tube.
If their phase I clinical trial to test the safety and preliminary efficacy of this therapy gains approval, University of Pittsburgh researchers will test the therapy on 10 patients who suffer from chronic ischemic stroke — the most common form, in which clots
block blood flow.
Over time, that plaque can
block blood flow, leading to a heart attack or stroke.