Articles tagged with Coronary Artery Disease
Canada has a unique opportunity to become an international leader in personalized medicine, driven by advancements in human genome sequencing and genetic research. The country can capitalize on its strengths to provide a model for other nations.
Researchers have identified novel genetic markers associated with an increased risk of heart attack, which are more than twice as great in individuals carrying multiple genetic markers. The study found that genes on chromosomes 3 and 12 play a crucial role in cardiovascular biology.
Researchers discovered that idiopathic QT interval prolongation significantly increases the risk of sudden death among coronary artery disease patients. The study found a five-fold increase in odds for abnormally prolonged QT intervals of unknown etiology, highlighting its potential as a predictor for sudden cardiac death.
A genome-wide study has identified new genes involved in Kawasaki disease, a serious illness that affects young children and can cause coronary artery damage. The study found that genes related to cardiovascular function and inflammation may be key factors, leading to potential new diagnostics and treatments.
Researchers at Duke University Medical Center have found a genetic variation in the neuropeptide Y gene that increases susceptibility to early coronary artery disease. The study found six related variations in the gene associated with transmission from generation to generation and association across a population of patients.
A large study found that cardiac CT scans can effectively assess coronary artery stenosis with a high sensitivity rate of 98% and specificity of 91%. This non-invasive technique may avoid the need for invasive catheter angiography in patients with intermediate clinical probability of coronary artery disease.
Coronary CTA accurately evaluates patients with calcified coronary artery plaques, detecting stenosis with 72% accuracy rate. Non-invasive and cost-effective, CTA provides a comprehensive view of arteries from multiple angles.
A study found that genetic variation on chromosome 9p21 and poor glycemic control interact to increase the risk of coronary artery disease in type 2 diabetes patients. The odds of CAD were 4-fold higher for those with two risk gene variants and poor glycemic control compared to those with one variant but good control.
A clinical trial reveals that combining ivabradine with current treatments significantly improves exercise capacity and reduces symptoms in patients with stable angina. The study showed a threefold improvement in total exercise duration at four months compared to those receiving standard doses of beta blockers alone.
The SYNTAX trial found comparable safety and efficacy rates between drug-eluting stents and heart bypass surgery in patients with left main disease. Stent use resulted in fewer strokes, while bypass surgery had higher revascularization rates.
Researchers found less than half of Medicare patients had pre-elective PCI, and only 44.5% underwent stress testing within 90 days.
A recent study found that exposure to fine particles and black carbon from traffic sources was associated with ST-segment depression in patients with coronary artery disease. The study suggests that air pollution can affect heart health through inflammation of the heart muscle or reduced blood flow, highlighting the need for vigilance ...
Patients with suboptimal response to aspirin and/or clopidogrel showed a significant reduction in myocardial damage during percutaneous coronary intervention when treated with tailored infusion of tirofiban. This treatment strategy aims to modulate intensity of treatment based on individual platelet reactivity.
The study found that ivabradine reduced coronary secondary outcomes, including fatal and non-fatal heart attacks by 36% and coronary revascularisation by 30%, in patients with a heart rate of above 70 bpm. Elevated heart rate was also identified as a strong independent risk factor for cardiovascular death and disease.
Diabetic patients face accelerated atherosclerosis, increased risk of restenosis and late mortality when undergoing PCI. DES has been associated with mortality benefit in patients with multivessel disease, but results are mixed for diabetic patients.
A positive exercise test indicates an increased risk of cardiac events, especially in athletes with underlying coronary artery disease. The test is crucial for evaluating high-risk athletes over 35 years old and those with known cardiac abnormalities.
Cardiac computed tomography (CTA) is reliable for excluding coronary artery disease but lacks hemodynamic relevance and poses radiation risks. Fundamental insights into CAD suggest a graded prognosis according to ischemia severity, making revascularization unnecessary in some cases.
A large clinical trial found that B vitamin supplementation did not reduce death or cardiovascular events in patients with coronary artery disease. The study, which involved over 3,000 participants, also showed a numerically lower incidence of stroke but higher incidence of cancer in the groups receiving folic acid.
A new classification system has been developed to help cardiologists determine the best course of treatment for patients with symptomatic myocardial bridging. The system combines clinical symptoms, non-invasive tests, and heart flow studies to reduce subjective decision-making.
A study of 3258 patients found that low blood levels of vitamin D were associated with a higher risk of death from cardiovascular causes and all causes. Individuals with lower vitamin D levels had higher rates of mortality, including those due to coronary artery disease, hypertension, and cardiovascular events.
Researchers used PET imaging to detect structural and functional alterations in the circulatory system of asymptomatic diabetic patients. The study found that PET revealed coronary vascular dysfunction as a precursor to coronary artery disease, which may precede structural changes in the arterial wall.
Researchers found that hormone replacement therapy maintained coronary endothelial function, while those without HRT experienced worsening endothelium function. Postmenopausal women who gave up HRT demonstrated the most severe drop in endothelial function.
A recent study found that MDCT is accurate in detecting stenosis in small and moderate-sized calcified coronary artery plaque, with a high concordance rate with cardiac catheterization. However, overestimation of stenosis occurred in large and heavily calcified lesions, highlighting the need for caution when interpreting MDCT results.
A new study found that rimonabant, a weight loss medication, showed no significant effect on slowing the progression of coronary artery disease in patients with abdominal obesity. However, it did show improvements in metabolic parameters such as high-density lipoprotein cholesterol levels and triglyceride levels.
Research highlights the benefits of omega-3 fatty acids for cardiovascular health, particularly among those diagnosed with coronary artery disease. The consumption of fish oil supplements or algae supplements can provide these essential fatty acids.
A new study by Rush University Medical Center found that women are significantly less likely to be treated with statins, aspirin, and beta-blockers for coronary artery disease compared to men. Despite similar prevalence of adverse drug reactions, the study suggests underutilization of medical therapies may contribute to this disparity.
A Mayo Clinic analysis of autopsy results over two decades reveals a long-term decline in coronary disease has ended, with some data suggesting an upward trend. The study's findings are based on the examination of 515 Olmsted County residents who died between 1981 and 2004.
A new study has discovered a set of 15 proteins found in urine that can distinguish healthy individuals from those with coronary artery disease. The protein panel accurately identifies CAD 83% of the time, with high sensitivity and low false positives.
Decades-long decline in coronary artery disease may have ended and possibly reversed after 2000, according to a study. The analysis of autopsy data from Olmsted County residents suggests that declines in high-grade disease ended after 1995 and possibly reversed after 2000.
Researchers at McGill University and Université de Montréal found that depression and anxiety can double a patient's chances of repeated heart ailments. Patients with coronary artery disease who had major depression or anxiety were more likely to experience cardiac events over two years.
A international study of 20,000 people identified seven new genes associated with good cholesterol (HDL) and triglycerides, while confirming the role of bad cholesterol (LDL) in heart disease. The findings suggest that genetic variants influencing HDL levels are not directly linked to lower risk of coronary artery disease.
The Lancet's Editor Dr. Richard Horton emphasizes the significance of non-experimental research in medicine, citing examples of reliable causal inferences and notable errors. He stresses the need for rigorous scientific practice, communication, and replication to ensure credibility and inform policymaking.
Researchers at Burnham Institute for Medical Research have discovered that stimulation of the Wnt signaling pathway is essential for coronary vasculature formation. The study provides a new avenue for developing therapies for coronary artery disease, which is a leading cause of mortality in Western countries.
Researchers have reviewed literature on stress tests to determine the most effective strategies for physicians. The study highlights the importance of choosing the right stress test to accurately detect coronary artery disease, emphasizing the role of pharmacologic agents and exercise EKGs in maximizing sensitivity and specificity.
Researchers found that initially healthy siblings of a person with left main coronary artery disease are 2.5 times more likely to develop some form of heart disease than those without the condition. This highlights the importance of family screening and prevention strategies for individuals with a history of LMD.
Researchers at the University of Bristol identified a heart protection mechanism in mice that may be exploited to improve treatments for patients with coronary disease. The study found that hearts with coronary disease became more resistant to damage after mock surgery, suggesting a potential therapeutic strategy.
A study found that patients with newly diagnosed coronary artery disease had nearly twice the prevalence of colorectal tumors compared to the general population. Colorectal cancer is associated with chronic inflammation, a common pathway with atherosclerosis and CAD.
Researchers have confirmed six new genetic variants that increase the likelihood of developing coronary artery disease. These variants, found in chromosomes 2, 6, 10 and 15, as well as two on chromosome 1 and one on chromosome 9, are common in white Europeans and explain a significant proportion of heart attacks.
A UT study found that cardiac PET-CT scanners incorrectly indicate coronary artery disease in up to 40% of patients due to software flaws. The researchers developed a solution to address the issue, resulting in accurate images of blood flow in the heart.
Renowned experts Roxanna Mehran and Michael J. Mack debate the role of stenting versus bypass surgery in treating left main coronary artery disease. The Synergy Between PCI With Taxus and Cardiac Surgery trial is expected to provide critical data on the effectiveness of drug-eluting stents compared to bypass surgery.
A new immunosuppression regimen for heart transplant patients has been found to improve kidney function and prevent transplant coronary artery disease. The study, led by Sudhir Kushwaha, used sirolimus as an alternative to calcineurin inhibitors, with consistent improvement in kidney function in stable patients.
A new gene, kalirin, has been discovered that may contribute to the development of cardiovascular disease. The research suggests a biological mechanism never before linked to the disease and could lead to novel ways to treat or prevent it.
The University of Wisconsin is conducting a clinical trial using adult stem cells to treat severe coronary artery disease. The study aims to investigate the efficacy and safety of blood-derived selected stem cells in improving symptoms and clinical outcomes in patients with chronic myocardial ischemia.
Researchers discovered a rare genetic mutation that causes early onset coronary artery disease in an Iranian family. The mutation, in the LRP6 gene, leads to high blood pressure, high cholesterol, and diabetes, all risk factors for heart disease.
An international consortium, led by Professor Dominique Gauguier, aims to understand the complex causes of coronary artery disease (CAD) and develop effective treatments. The project will use advanced genomics techniques to identify biomarkers for predicting CAD risk factors, offering insights into disease diagnosis and prevention.
Research links depressive symptoms to early signs of artery disease, including thickening of carotid arteries. The study suggests that physical symptoms of depression, such as fatigue and appetite disturbance, may play a role in the development of coronary artery disease.
A new study reveals that women who outwardly express anger may be at increased risk of heart disease if they also have certain risk factors such as diabetes, unhealthy levels of fats in the blood, or age. The researchers found that only expressed anger, not just cynicism or hostility, was predictive of coronary artery disease in women.
A new study published in the Journal of Nuclear Medicine found that young smokers who quit smoking can normalize abnormal coronary artery function within a month. The PET imaging study examined the effects of smoking cessation on coronary endothelial dysfunction in healthy young male adults.
Researchers at Duke University Medical Center developed a new test that analyzes blood metabolites to identify genetic predispositions to coronary artery disease. The study found strong heritabilities in certain metabolites, suggesting the potential to detect people at risk of developing the disease at an early age.
Researchers found a 36% survival rate for blacks and 46% for whites, despite similar levels of coronary disease. The disparity is attributed to various factors, including bias in treatment, mistrust of the medical system, and socio-economic barriers.
Researchers discovered variations in the GATA2 gene may predispose individuals to coronary artery disease, the most common form of heart disease. The discovery could lead to genetic tests predicting an individual's risk of developing the disease, encouraging early behavior modifications.
Researchers identified an accurate method to detect coronary artery disease risk in obese individuals using stress myocardial perfusion imaging. The test can help physicians plan management strategies for patients with 'silent' disease, reducing the risk of angina, heart attack, and death.
A recent study found that cardiac CT scans are useful for excluding coronary disease in selected patients, but may be limited by a high number of nondiagnostic cases. The test can identify significant stenosis with high sensitivity and negative predictive value, suggesting its potential as an alternative to conventional angiography.
Researchers found that men with chronic coronary syndrome are more likely to experience erectile dysfunction, with an average time frame of two years between ED symptoms and angina. The study suggests that patients with ED and multiple risk factors should be monitored for heart disease.
A small study found that starting exercise after 40 can significantly cut the chances of developing coronary artery disease. Those who exercised throughout their lives had the lowest risks, but those who started later were still around 55% less likely to be diagnosed with heart disease.
Researchers present a new non-invasive cardiac imaging technology that enables accurate evaluation of cardiac blood vessel narrowing and blood supply to the heart muscles in a single imaging session. The technology combines SPECT perfusion imaging with CT coronary angiography, providing more accurate information than stand-alone tests.
Treatment with ACE inhibitors significantly reduces risk of death from any cause, cardiovascular death, myocardial infarction and stroke. ACE inhibitors also appear to reduce risk of additional outcomes such as diabetes, congestive heart failure hospitalization and cardiac arrest.
Researchers developed a new method to measure EPC levels in blood samples using ALDH activity, which correlates with the degree of coronary artery disease. Patients with lower EPC levels are more likely to have greater disease and increased risk for cardiac events.
A two-year study found that early periodontal treatment results in lower medical costs for diabetes, cardiovascular disease, and CAD patients. The study involved 144,225 patients with both medical and dental insurance.
A study found that heart patients taking antidepressants have a 55% higher risk of dying, even after controlling for age and other factors. The researchers suggest that non-pharmocological approaches like exercise may help reduce this risk.