Articles tagged with Circulatory System
Researchers at Karolinska Institutet and Columbia University identified a mini-brain within the heart with its own nervous system that controls the heartbeat. This discovery challenges current views on how the heartbeat is controlled and may lead to new insights into heart diseases and treatments.
A new study maps genetic traits to cellular composition of atherosclerotic plaques, predicting future stroke or heart attack risk. The research improves risk assessment and treatment for patients with atherosclerosis.
Researchers at Shinshu University developed a simple risk score model to predict successful weaning from mechanical circulatory support. The scoring method uses easily measurable health indicators, such as blood pressure and cardiac output, to categorize patients into five groups with varying success rates.
A study published in JAMA finds that balloon angioplasty plus aggressive medical management reduces the risk of any stroke or death within 30 days. The treatment approach may be effective for symptomatic intracranial atherosclerotic stenosis, but with consideration for increased stroke risk after balloon angioplasty.
Researchers create superhydrophobic array device (SHArD) mimicking the lotus leaf surface structure, enabling high-throughput generation of three-dimensional nanoscale tumor models. This platform helps study metastasis and primary tumors, shedding light on cancer progression.
The Rice University lab has developed a new noninvasive technique, called REMIS, that can measure gene expression and gene therapy delivery in specific brain regions using ultrasound. This technology could revolutionize brain-based gene therapy for neurodegenerative diseases.
A new mathematical method, validated with experimental animal data, provides fast, reliable, and minimally invasive way of determining how to treat critical blood pressure changes. The method accurately tracks cardiac output and systemic resistance, mirroring estimates from more invasive catheters in some cases.
Researchers investigate the effects of space travel on astronauts' eye health, specifically fluid shift and its relation to Spaceflight Associated Neuro-ocular Syndrome (SANS). They examine potential countermeasures, such as lower body negative pressure, to combat microgravity-induced changes in ocular perfusion pressure.
A breath-holding test assesses cardiorespiratory health and predicts postoperative pain risk in laparoscopic gynecological surgery. The study analyzed 489 patients and found significant correlation between breath-holding time and pain scores.
A new study from the University of Copenhagen found that long-term exposure to air pollution accelerates cognitive decline and increases risk of dementia. The research, which followed a cohort of nurses for 27 years, also suggests that physical activity may mitigate the adverse effects of air pollution.
Researchers investigated the effects of hypoxia on hemodynamic and metabolic parameters in patients with Fontan circulation. The study found that oxygen saturation levels remain stable during sleep and that prolonged high-altitude exposure is well-tolerated, offering new perspectives for patients with Fontan circulation.
A new study suggests that stimulating specific areas of the brain can affect heart rate in individuals with depressive disorders. The researchers found high accuracy in identifying optimal treatment spots using heart rate measurements during brain stimulation.
A new study from Israel found that nearly 1 in 5 adults with congenital heart disease developed an abnormal heart rhythm during a five-year study. Those who developed arrhythmias had twice the risk of early death and increased hospitalization rates compared to those without irregular heart rhythms.
Researchers aim to address LVAD shortcomings, reducing blood damage and clotting risk through innovative designs and coatings. A novel flexible stented blood inlet and slippery hydrophilic coatings will be used to prevent flow stasis and clot formation.
Researchers are developing minimally invasive techniques to repair and regenerate tissue in aortic aneurysms using actively targeted, drug-releasing nanoparticles. The team found that rod-shaped particles with high aspect ratios were selectively taken up by diseased endothelial cells, leading to improved therapy outcomes.
A Phase 2B clinical trial, led by City of Hope, found that carvedilol may improve heart health markers and reduce the risk of heart failure in childhood cancer survivors. The study suggests that carvedilol could benefit long-term survivors and those who are highly adherent to the treatment.
Eating fatty foods during stressful periods can reduce brain oxygenation and cause poorer vascular function in adults. Consuming low-fat food and drinks may help mitigate this effect.
The American Heart Association and Neurocritical Care Society emphasize the need for improved critical care management of patients after cardiac arrest. The consensus statement highlights gaps in knowledge, particularly in areas like neurological, cardiac, and gastrointestinal care.
A literature review found that prioritizing circulation before the airway in trauma patients with major blood loss leads to improved outcomes, including lower mortality rates. This approach, known as CAB, has gained acceptance over the ABC model and is now being recommended by the American College of Surgeons.
Researchers are conducting a four-year study to investigate the effectiveness of acupuncture in reducing stable angina-related chest pain. The study will enroll 112 participants and compare acupuncture treatment to watching TED Talk videos for symptom relief.
A new study reveals that women with atrial fibrillation (AF) have comparable outcomes to men when undergoing pulsed field ablation (PFA), a safer and more precise procedure. The results show improved AF recurrence rates in women after PFA, making them an eligible candidate for this life-enhancing treatment.
A study in fruit flies reveals a potential connection between a respiratory system defect and the development of aortic aneurysms in humans. Researchers identified proteins that play a crucial role in maintaining tube structure and integrity, which may also be relevant to human tubular diseases.
A study led by UC San Francisco found that homeless individuals have a 7 times higher rate of sudden cardiac death compared to the general population. Non-cardiac causes, such as overdoses and unrecognized infections, are more common among homeless people.
The study reveals that NO forms a new compound, NO-ferroheme, which significantly expands blood vessels and directly activates guanylyl cyclase. This finding challenges the long-held hypothesis on nitric oxide signalling in blood vessels.
A large Kaiser Permanente study found that moderate aortic stenosis patients have similar outcomes to those with mild stenosis. Fine-tuning physician assessment could help identify patients who may benefit from surgery, improving treatment strategies.
A pilot study reveals microplastics in heart tissue samples from patients undergoing cardiac surgery, with evidence suggesting direct introduction during procedures. The findings suggest various microplastics can accumulate and persist in the heart's innermost tissues.
Research presented at ENDO 2023 found women with PCOS died 47% earlier than those without the condition. They were also at higher risk for deaths due to cardiovascular disease, tumors, diabetes, and lung infections.
Researchers found altered serotonin 2A/C receptor binding in brain stems of infants who died from SIDS, suggesting a biological basis for the condition. The study suggests that specific combinations of genetic vulnerability, external stressors, and critical developmental periods may contribute to SIDS.
Research finds military veterans exposed to low doses of chemical warfare agents have higher rates of mortality from genitourinary diseases and deaths attributable to alcohol. However, overall cancer incidence is not significantly associated with Porton Down attendance.
A team led by Professor Timo Betz has developed a 3D cell culture chamber to grow muscle and other tissue using high-resolution microscopy. The new system will enable scientists to mimic the mechanical situations that confront various living tissues in serious conditions, reducing animal testing and costs.
Researchers review current treatment updates for systemic light chain (AL) amyloidosis, highlighting the need for early diagnosis and effective maintenance therapy. The article discusses the relationship between AL amyloidosis and monoclonal gammopathy of undetermined significance (MGUS), emphasizing the importance of regular monitoring.
A team of UCF College of Medicine researchers created a digital topographical map of the cardiac sympathetic neural network, controlling heart rate and 'fight-or-flight' response. The map will guide treatments like neuromodulation therapy for hypertension, sleep apnea, and heart failure.
A remote hypertension program, operated by Mass General Brigham, successfully supported patients through the COVID-19 pandemic in achieving their blood pressure goals. Participants who enrolled during the pandemic reached and maintained their goal blood pressures an average of two months earlier than in the pre-pandemic period.
A virtual care team consisting of physicians and pharmacists improved the adoption of life-saving therapies in patients with heart failure, leading to increased use of evidence-based treatments and better patient outcomes. The strategy was safe and effective, with comparable length of stay and safety events between the groups.
High-dose anticoagulation reduces intubations and deaths by 30% in hospitalized COVID-19 patients, especially those with ARDS. The study found a significant reduction in mortality and need for ICU care among patients treated with therapeutic anticoagulation.
Researchers developed a microfluidic model of vascular malformation caused by PIK3CA mutation, allowing them to study disease mechanisms and test treatment efficacy. The model successfully replicated the disease's manifestations and responded to alpelisib, a newly approved PIK3CA inhibitor.
Research suggests that oleic acid in olive oil has antioxidant properties, inhibiting the expression of proteins associated with cholesterol transport, and reducing atherosclerosis. Additionally, oleic acid is recognized as an anti-cancer molecule, which also displays hypocholesterolaemic effects and may influence epigenetic mechanisms.
Researchers at the University of Missouri have designed a soft and breathable material that can be worn on the skin without causing discomfort. The material, made from liquid-metal elastomer composite, has integrated antibacterial and antiviral properties to prevent the formation of harmful pathogens.
Researchers at Duke University discovered that glassfrogs store nearly 90% of their circulating red blood cells in their liver when they want to be transparent. This helps them blend in with their surroundings and avoid predation during the day.
Researchers at the University of Missouri are developing a wearable heart monitor using a breathable material with antibacterial and antiviral properties. The device will track heart health via dual signals, providing continuous monitoring for early detection of heart disease.
A study of over one million Medicaid beneficiaries found that more than half experienced significant lapses in coverage, with only 25% continuously enrolled throughout the period. The authors recommend increasing investments to improve long-term health outcomes.
A novel screening tool has been developed to diagnose a serious heart condition in young athletes. The tool uses non-invasive ultrasound techniques to accurately identify cardiomyopathy, reducing false positives and providing better protection for the athletes of tomorrow.
Researchers at Osaka University have developed a mouse model that shows Favine protein can protect against atherosclerosis and thrombosis. The study also found that reduced levels of Favine are associated with calcification and thrombus formation, revealing a new potential therapeutic target for treating atherosclerosis.
Researchers have discovered that mutations causing Duchenne muscular dystrophy slow electrical activity in the heart, leading to abnormal heart rhythms. This finding may help explain why up to 60% of DMD patients experience life-threatening heart rhythm abnormalities and could lead to new treatment strategies.
The WVU program trains next generation of toxicologists to collect, analyze air samples from mining, fracking sites, using the university's Inhalation Facility. Students will work with preceptors from various fields to investigate health effects of inhaling toxicants.
The American Journal of Roentgenology has published best practices for managing an iodinated contrast media (ICM) shortage in radiology practices. To mitigate the shortage, practice leaders should prioritize examination findings and reduce overall ICM usage.
A flying intervention team deployment was significantly associated with shorter time to endovascular thrombectomy, supporting consideration for some stroke systems of care. The findings may need further research to confirm long-term clinical outcomes and applicability in other geographic settings.
A new study published in the European Heart Journal shows that MRI is superior to echocardiography for diagnosing heart failure and predicting patient outcomes. The research found that MRI can accurately measure left ventricular filling pressure, leading to improved diagnosis and reduced need for invasive assessments.
Researchers found that post-COVID patients displayed altered autonomic nervous system functioning, with increased sympathetic activity and decreased parasympathetic activity. Obesity and physical inactivity were key factors contributing to these changes.
Research finds a strong association between retinal age and real age, with large gaps associated with increased mortality risk. The 'retinal age gap' could be used as a screening tool to predict mortality risk, particularly for non-cardiovascular causes.
A new imaging technique can detect early signs of blood trauma in red blood cells, which could aid in the development of markers to prevent damage. The technique, developed by researchers at Shibaura Institute of Technology and Griffith University, uses high-speed cameras to visualize changes in RBC shape under stress.
A new meta-analysis published in the European Journal of Preventive Cardiology suggests that Sodium-glucose co-transporter-2 (SGLT2) inhibitors can improve outcomes for heart failure patients with preserved ejection fraction. The medication has been shown to reduce the risk of death from heart-related causes and hospitalization by 22%.
Researchers at GIST create an optical technique called optical speckle image velocimetry that can image dynamic changes in cerebral blood flow, allowing for the diagnosis of brain health. The technique provides high-time resolution and measures both speed and direction of blood flow.
Researchers from Aarhus University have developed a revolutionary technique to identify pathogenic particles in the blood, which determine the development of autoimmune diseases like Systemic Lupus Erythematosus. The technique allows for early diagnosis and potentially life-threatening consequences such as blood clots and organ damage.
Exercise with face masks or respirators can cause detrimental effects on the cardiovascular system, including cardiac arrhythmias and spontaneous pneumothorax. Masks designed for runners with minimal oxygen deficiency side effects are recommended for high-risk individuals.
A patented technology monitors stroke survivors' health parameters from the brain and cardiovascular system. Post-stroke rehabilitation starts instantly after medical stabilization, with a high risk of second strokes within 4 years.
A new metabolism regulation system was found in brown adipose tissue using the kallikrein-kinin hormonal system, which can help prevent damaging effects of excessive activation. This discovery could lead to strategies for moderating thermogenic activity in pathological situations like cancer.
The study examines coronavirus disease 2019's (COVID-19) effects on the cardiovascular system, revealing potential long-term consequences. Researchers highlight the need for further investigation into the relationship between coronaviruses and cardiovascular health.
The American grasshopper's circulatory system responds dramatically to changes in body position due to gravity, affecting blood and air distribution. Physiological compensation mechanisms similar to vertebrates suggest an ancient, widespread response to gravitational forces.
A clinical trial called GutHeart Trial examines the relationship between gut bacteria and heart failure, testing antibiotic, probiotic yeast, or no treatment on patients with heart failure. The study aims to develop new treatment strategies and better understand how gut leakage affects inflammatory processes and heart failure.