Articles tagged with Blood Flow
A multicenter study found that patients with low blood flow in the back of the brain are at higher risk for recurrent strokes. The study used a new MRI-based technology to identify patients who can benefit from angioplasty, which may outweigh the risks for some individuals.
Delays in restoring blood flow after a stroke were associated with decreased benefits of intra-arterial clot-busting treatment and reduced chances for a good outcome. The chances for a good outcome were reduced by 6 percent for every hour of reperfusion delay.
A study published in The Journal of Physiology found that regular exercise can significantly reduce the physiological severity of hot flushes experienced by post-menopausal women. By improving blood flow and reducing sweating, exercise minimizes the physical discomfort associated with hot flushes.
A study found that concussed football players had reduced cerebral blood flow even after clinical recovery, suggesting a role for MRI in determining when to allow them to return to competition. This technology may provide a more objective measurement of recovery and help prevent second injuries.
Youths with high-functioning ASD exhibit underdeveloped and insufficiently networked social brain areas, with increased blood flow in frontal regions important for navigating social interactions. Reduced long-range connectivity between default mode network nodes may explain impairment in social responsiveness.
Researchers found that just 10 minutes of walking after six hours of sitting can restore impaired vascular function and improve blood flow to the legs. This simple break can offset the harm caused by prolonged sitting and reduce the risk of cardiovascular complications.
Researchers investigate remote conditioning, a technique that uses blood pressure cuffs to restrict blood flow to limbs and activate natural protective mechanisms in the brain, potentially reducing dementia symptoms. The approach has shown promise in improving white matter health and may help prevent dementia.
Researchers have identified a potential new way to predict which patients with head and neck cancer may benefit most from chemotherapy. The use of dynamic contrast-enhanced MRI scans has shown that tumour blood flow can predict response to treatment, with patients having high blood flow more likely to respond.
A study in the Journal of Stroke and Cerebrovascular Diseases explores the pros and cons of general anesthesia versus conscious sedation for stroke patients undergoing minimally invasive surgery. The authors conclude that an anesthesiologist or anesthesia care team should be present to provide sedation, regardless of the approach used.
New supercomputer models capture normal human heart valves' behavior and their replacements, helping doctors make more durable repairs. The models can simulate the effects of realistic blood flow on heart valve tissue, allowing for better understanding of valve failure mechanisms.
Research reveals a strong link between kidney impairment and decreased blood flow to the brain, increasing the risk of stroke and dementia. Poor kidney function was strongly related to decreased blood flow to the brain, with the strongest association seen in participants with decreased blood flow.
By analyzing blood flow patterns, researchers have identified 13 main brain networks that work together and can be used to diagnose neurological disorders like Alzheimer's. The study provides new insights into how the brain organizes itself and sets the stage for early diagnosis and treatment.
University of Adelaide researchers found a significant correlation between brain volume and blood flow rate in primates, indicating faster cognitive ability. The study suggests that brain metabolic rate increased with brain size, leading to higher intelligence.
A small imaging study found that cortical cerebral microbleeds were associated with reduced brain blood flow in cognitively normal older patients. The study suggests that chronic hypoperfusion may put these individuals at risk for neuronal injury and neurodegeneration.
A new study found that people with type 2 diabetes experienced negative changes in brain blood flow regulation after just two years, leading to lower scores on tests of memory and thinking skills. Higher levels of inflammation were associated with greater declines in cognitive skills.
The American Heart Association/American Stroke Association recommends the use of brain stent retrievers in certain patients undergoing acute ischemic strokes. The devices can restore blood flow and reduce stroke damage when treated promptly, making them a valuable option for carefully selected patients.
A new laser-based technique called multi-exposure speckle imaging (MESI) aims to provide accurate blood flow measurements during neurosurgery. The technology has the potential to transform images and enable surgeons to distinguish healthy arteries from blocked ones, allowing for better assessment of problem areas.
A study by the Center for BrainHealth found that strategy-based cognitive training improved cognitive areas critical to everyday life success, as well as reduced depressive and stress-related symptoms. The training also increased brain blood flow to key regions of the brain.
Researchers have developed a drug-releasing electronic stent that provides diagnostic feedback by measuring blood flow, which slows when an artery starts narrowing. The device can also heat up on command to speed up drug delivery, and it can dissolve once it's no longer needed, reducing the risk of blood clot formation.
A study published in The Journal of General Physiology reveals the distinct roles of calcium channels in controlling arterial tone and blood flow to the brain. Researchers found that blocking L-type and T-type channels has opposite effects on blood flow, with one promoting vasodilation and the other constricting arteries.
A study found that removing clots in severe strokes, combined with medication, improves blood flow and may lead to better long-term outcomes. The treatment shows promise as a game-changer for certain types of stroke patients.
Researchers discover nitric oxide plays key role in controlling blood flow to tissues, enabling oxygen delivery; low levels linked to heart diseases and blood disorders. Nitric oxide-deficient mice exhibit impaired oxygenation and increased risk of heart attacks.
Researchers at Fred Hutchinson Cancer Center found that administering selenide intravenously after cardiac arrest significantly protects heart tissue, reducing damage by 88%. The nutrient selenium is taken up by injured tissues and reduces inflammation and oxidative stress.
A new study found that cerebral blood flow recovery is a biomarker of concussion outcomes in college football players. The research, published in JAMA Neurology, suggests that reduced blood flow in the brain can indicate severity and potential for slow recovery.
A six-year clinical trial found that patients with low blood flow to the back of the brain are at a higher risk of recurrent stroke. The study used specialized software to visualize and quantify blood flow, identifying a quarter of patients with low posterior blood flow.
Researchers found that treating the uninjured side of the brain can boost growth factors and create new blood vessels, aiding stroke recovery. This approach also benefits the uninjured side with a boost of growth factors.
Researchers found that women's respiratory muscles consume a greater amount of oxygen during exercise compared to men. This means women use more energy when breathing, potentially impacting leg blood flow and skeletal muscle fatigue.
Researchers found that brain activity increases with smoking, but quickly adapts after quitting. Stopping smoking abruptly can lead to severe withdrawal symptoms, which may deter former smokers from continuing their quit journey.
New research from Wake Forest University confirms the conversion of nitrite to nitric oxide by deoxygenated hemoglobin reduces platelet activation, affecting blood flow and clotting. The findings have implications for treating sickle cell disease and stroke.
Scientists at King's College London have identified the TRPA1 gene as a crucial player in the body's response to cold, triggering a vascular response that can help prevent frostbite and hypothermia. The study suggests that targeting this gene could lead to new treatments for conditions associated with cold exposure.
A study reveals that white blood cells can cause increased blood pressure and impaired blood flow in the brain, leading to death from cerebral malaria in mice. The researchers used a mouse model of Plasmodium berghei ANKA-induced cerebral malaria to investigate the role of white blood cells in this disease.
Researchers discovered that cocaine users experience abnormal blood flow in the smallest blood vessels, putting them at risk for heart complications. This microvascular dysfunction may not be detected by regular testing, highlighting the need for more research on this understudied population.
Research presented at the American Heart Association's Scientific Sessions 2014 found that young and middle-age women with stable coronary heart disease are more vulnerable to emotional stress. They experience a significant reduction in blood flow to the heart when subjected to mental stress, whereas physical stress does not cause a no...
Researchers at the University of California, San Diego, propose a new surgical intervention that combines the first and second steps of single-ventricle heart surgery. This approach aims to reduce the workload on the patient's heart, increase blood flow to the lungs, and improve oxygen delivery.
Researchers developed a novel ultrasound technology to screen for heart conditions, enabling earlier diagnosis and more effective treatment. The technology helps identify blood flow patterns in the heart, which is crucial for diagnosing hypertrophic cardiomyopathy and non-ischemic dilated cardiomyopathy.
Researchers at UCLA School of Nursing have found that people with sleep apnea have weaker brain blood flow, which may be damaging the brain. The study used a non-invasive MRI procedure to measure global blood volume and oxygen-dependent signal in the brain, revealing changes in oxygenated blood across the whole brain.
A new method developed by researchers from Stony Brook University and the U.S. National Institutes of Health uses optical coherence Doppler tomography to image how cocaine disrupts blood flow in mouse brains. The technique provides high-resolution images of capillary flows, shedding light on the effects of cocaine on brain physiology.
Researchers at the University of Leeds have identified a key gene involved in blood vessel formation, which may help understand how complex life begins. The discovery could lead to new possibilities for treating cardiovascular disease and cancer by targeting changes in blood flow.
The study, led by Elizabeth M. C. Hillman, reveals the vascular endothelium plays a critical role in regulating blood flow in response to neuronal activity. This finding has far-reaching implications for understanding early brain development, disease, and aging.
A new study has found that non-obstructive coronary artery disease is associated with a 28-44% increased risk of major adverse cardiac events such as heart attacks or death. Patients with non-obstructive disease should consider preventive therapies like quitting smoking and taking preventative medications.
Researchers at Georgia Institute of Technology and Emory University discovered that altered blood flow induces epigenetic alterations in endothelial cells, leading to atherosclerosis. Additionally, they found that reduced expression of the aldehyde dehydrogenase 1 enzyme makes dopaminergic neurons more susceptible to degeneration in Pa...
Researchers have found that disturbed blood flow leads to epigenetic changes in genes lining blood vessels, contributing to atherosclerosis. The study suggests that good blood flow patterns can persist over time due to these lasting changes.
Researchers found that cerebral blood flow levels decreased before puberty but diverged sharply after, with females experiencing increased flow and males decreasing further. This divergence may contribute to sex-specific differences in behavior and risk for psychiatric disorders.
A study including high-risk patients undergoing major gastrointestinal surgery found that using a cardiac-output guided intervention to improve hemodynamics did not reduce complications and risk of death after 30 days. However, an updated meta-analysis suggested a clinically important reduction in complication rates when the results we...
Researchers discovered that an enzyme called IDO plays a crucial role in regulating inflammation during reperfusion injury. By boosting stem cell efficacy, IDO reduces inflammation and cell death, leading to improved recovery rates.
Researchers discovered that tadalafil improves blood flow in the muscles of boys with Duchenne muscular dystrophy, allowing for improved exercise performance. The study found that blood flow abnormalities were present even in boys taking corticosteroids, highlighting a potential new therapeutic strategy for treating the disease.
Research found that brief musical training can increase blood flow in the left hemisphere, similar to language processing. The study suggests a rapid change in cognitive mechanisms for music perception.
A study by Cedars-Sinai researchers found that a commonly prescribed drug can restore blood flow to oxygen-starved muscles of boys with Duchenne muscular dystrophy, shortening life expectancy. The results led to a phase III clinical trial for patients with the disease.
A study by researchers at the University of Illinois Chicago found that massage therapy improves systemic circulation and alleviates muscle soreness after exercise. The study also showed that massage has benefits for people regardless of their level of physical activity, improving vascular function in healthy sedentary adults.
Narine Sarvazyan invents a new organ, the 'mini heart', made of cardiac muscle cells, to help return venous blood flow. The cuff can be created from patient's own adult stem cells, eliminating rejection risk and treating chronic diseases like venous insufficiency.
Researchers at UCL found that pericytes, which control blood flow in capillaries, die around strokes causing lasting brain cell damage. New treatments targeting these cells may help restore normal blood flow and prevent ongoing slow damage after a stroke.
A neuroscientist at Virginia Tech is researching how the brain develops collateral blood vessels to restore oxygen and nutrients after a stroke. Her study aims to understand the brain's natural network of collateral vessels and develop new treatments to improve blood flow and limit tissue damage.
Researchers developed a device to noninvasively monitor cerebral blood flow in acute stroke patients. The study found that head-of-bed positioning affects blood flow, with some patients experiencing a paradoxical improvement when their bed was elevated.
A major study found that lowering blood pressure immediately after a stroke does not reduce the risk of death or major disability. The study included over 4,000 patients and showed no significant differences between groups in mortality or disability rates.
A new imaging technique can diagnose aortic disease and predict potential complications in patients with bicuspid aortic valve. Blood flow changes were found to be driven by specific types of abnormal aortic valves, and the study demonstrated a direct association between blood flow patterns and aortic diseases.
Researchers at IU School of Medicine will use advanced neuroimaging techniques to study high school athletes and understand the impact of concussions on brain blood flow. The study aims to improve understanding of concussion symptoms, cognitive functioning, and detection methods.
Meniere's disease affects 3-5 million people in the US, causing dizziness, ringing, and hearing loss. Researchers suggest a new theory linking the disorder to low blood flow in the brain and inner ear, offering a potential treatment avenue by addressing vascular risk factors.
A new study found that aerobic exercise improves memory, brain health, and physical fitness in healthy aging adults. Researchers used non-invasive brain imaging techniques to detect brain changes earlier, revealing increased blood flow to the hippocampus and anterior cingulate region.
Researchers discovered that snakes can optimize their vision by controlling blood flow in their eyes when perceiving threats. The coachwhip snake's visual blood flow patterns change depending on its environment, allowing for improved visual clarity in times of need.
Researchers found that snakes reduce blood flow in their eyes by prolonging periods of contraction, allowing for better vision. This adaptation is thought to be advantageous in threatening situations.