Articles tagged with Coronary Artery Disease
A new technique measures myocardial perfusion reserve and volume reserve to predict severe stenosis in coronary arteries. This method detects 50% or greater narrowing with excellent sensitivity, enabling timely intervention for high-risk patients.
Researchers at Washington University School of Medicine have identified a genetic variant associated with the severity of coronary artery disease in patients with type 2 diabetes. The variant, located in the TLL1 gene, was found to correlate strongly with the extent of coronary disease, even better than traditional clinical factors.
Researchers at NYU Langone Health identified a hidden cause of heart attacks in women without significant coronary artery disease. Plaque disruption, a rupture or ulceration of cholesterol plaque in a coronary artery, was found to be the mechanism behind myocardial infarction in some women.
Results from CREDO-Kyoto registry show CABG associated with lower risk for serious adverse events in patients with triple vessel disease. Higher risk of MI and all-cause death found with PCI, particularly in those with high SYNTAX scores.
The new ESC guidelines on peripheral artery disease emphasize the need to assess patients with coronary artery disease for symptoms or asymptomatic atherosclerosis in other vascular areas. The guidelines also highlight the importance of considering multisite artery disease and the overall clinical status of patients.
Researchers developed a high-resolution imaging technology called microOCT that can reveal cellular and subcellular features of coronary artery disease. The study shows detailed images of endothelial cells, inflammatory cells, smooth muscle cells, fibrin proteins, and platelets involved in clot formation.
Researchers have found that HDL cholesterol from patients with coronary artery disease has impaired anti-inflammatory effects on blood vessel-lining cells and fails to stimulate repair of the blood vessel lining. This study highlights the importance of considering not just abundance but also biological functions of HDL in preventing CAD.
A small study found PCI to be safe in patients with significant CAD who were referred for liver transplantation. The procedure was successfully performed in 94% of patients, and all remained clinically stable at one month following the intervention.
Increased peripheral arterial disease (PAD) screening is correlated with substantial growth in PAD revascularization procedures, particularly vascular surgery. Non-invasive physiologic testing in cardiology has demonstrated a nearly twice the compounded annual growth rate of vascular surgery and radiology.
A large waist circumference or high waist-to-hip ratio significantly increases the risk of death in coronary artery disease patients, even among those with a normal Body Mass Index (BMI). The study refutes the obesity paradox, suggesting that central obesity is a more critical factor than overall weight.
A study of over 5 million Medicare beneficiaries found that hospital regions with a higher frequency of diagnoses have a lower case-fatality rate for chronic conditions. The analysis suggested that increased diagnosis frequency leads to better patient outcomes.
Researchers discovered 13 novel genetic variants linked to coronary artery disease, including seven related to LDL cholesterol and hypertension. The findings shed light on previously unknown mechanisms increasing heart disease risk.
Researchers found that automatic referrals and patient discussions significantly increased the rate of cardiac rehabilitation usage. A combined referral strategy showed an 8-fold increase in enrollment rates compared to usual care.
A new study from the University of Cincinnati found that patients with lower socioeconomic status have worse stroke severity at presentation. Researchers analyzed 1,933 cases of ischemic stroke and discovered that poorer patients had significantly increased initial stroke severity.
Researchers found that a single DNA variation helps protect African-Americans from coronary artery disease, with those having the alternative genetic code having a fivefold reduction in artery narrowing or clogging. The protective effect is even more pronounced when individuals inherit two copies of the guanine gene variant.
A six-year follow-up study found that shouldering family demands and worries increases the risk of angina in middle-aged Danish women and men. The study tracked over 4,500 participants and found that worrisome/demanding relationships with a partner or child posed the greatest risks, with a nearly four-fold increase in angina symptoms.
New study shows combo CT scans of heart and arteries are comparable to traditional SPECT nuclear imaging tests in detecting coronary artery disease. The combination CT scans identified 71% of patients with reduced blood flow, while correctly identifying those without slowing down 90% of the time.
A massive international study found no association between a genetic marker and the risk of coronary artery disease. The study analyzed data from over 17,000 patients with cardiovascular disease and 40,000 others, concluding that carrying a particular variant of the KIF6 gene does not indicate a greater risk for the disease.
Researchers found that a low-carb diet based on animal protein may increase death risk compared to a vegetable-based diet. Additionally, patients often overestimate the benefits of percutaneous coronary intervention (PCI) and radiation-free magnetic resonance angiography (MRA) offers an accurate diagnosis for peripheral arterial disease.
Patients with hypertension, diabetes, and coronary artery disease who maintained systolic blood pressure at less than 130 mm Hg did not have improved cardiovascular outcomes compared to usual blood pressure control. Tight blood pressure control was actually associated with increased risk of all-cause mortality.
A systematic review of C-reactive protein studies found publication bias and low study quality, casting doubt on the marker's reliability. The authors propose improved research protocols to address these issues.
Researchers found significant cost increases in Medicare claims between 2003 and 2006, with DES contributing $3.32 billion to growth and ICDs contributing $774 million. Average costs for coronary artery disease and chronic heart failure patients increased substantially, driven by the use of these devices.
A study by UC Davis researchers has identified a blood component, lipoprotein-associated phospholipase A2 (Lp-PLA2), as a predictor of coronary artery disease in African-Americans. The finding highlights the role of inflammation in vascular disease among this ethnic group and may lead to more targeted treatment approaches.
Men experiencing impotence should undergo thorough medical assessments due to significant proportion exhibiting early signs of coronary artery disease. The authors suggest that the link between the two conditions could be due to atherosclerosis, leading to restricted blood flow.
Researchers have developed a non-invasive Respiratory Stress Response (RSR) test that can accurately measure the presence of significant coronary artery disease, with a sensitivity and specificity of 83% and 70%, respectively. The test uses a Pulse Oximeter to measure blood flow in response to paced breathing.
A study found that a 35 percent decrease in CHD mortality was largely attributed to reductions in traditional risk factors. The decline in deaths was associated with significant declines in the use of treatments for conditions such as heart failure, coronary artery disease, and high blood pressure.
A meta-analysis of fibrate drugs found significant reductions in major cardiovascular events and coronary events. Fibrates also showed a modest risk reduction for albuminuria progression, an early marker of kidney disease.
A retrospective study found that complete revascularization significantly improved outcomes for patients with coronary artery disease (CAD), with a 3-year mortality rate of 6.6% compared to 14.8% in those with incomplete revascularization. The study also revealed that advanced medical therapy may contribute to improved mortality rates.
A recent study published in the American Journal of Roentgenology found that the Framingham risk assessment tool has limited sensitivity in detecting coronary artery disease. In fact, simple observation of coronary calcium presence using CT scans was more effective in identifying patients with substantial atherosclerosis.
A new pilot study led by UC and VA researchers is evaluating the functional significance of blockages in cardiac blood vessels. Using a formula derived from fluid mechanics principles, they aim to provide more accurate assessments of vessel blockages.
Researchers found that a family history of early coronary artery disease increases the risk of developing obstructive CAD and plaque buildup in arteries. The study analyzed over 8,200 patients who underwent cardiac computed tomography angiography, revealing a 28% higher chance of disease development among those with a family history.
A new study from Henry Ford Health finds that patients with high levels of abdominal aortic calcium (plaque) are nearly 60% at risk of coronary artery disease and dying. Conversely, those with low AAC scores have a lower risk of heart disease.
Researchers found that lowering systolic blood pressure below 115 can increase cardiovascular risk for patients with diabetes and coronary artery disease. This new data challenges traditional guidelines recommending lower blood pressure levels as better.
A new study finds that nearly 60% of chest pain patients without prior heart disease have no significant coronary artery disease, highlighting the need for improved identification methods. The study suggests re-evaluating patient selection processes, including history taking and risk factor assessment.
Researchers have developed a novel, non-invasive measure called Respiratory Modulation Response (RMR) to quickly and accurately detect the presence of significant coronary artery disease. Patients with sCAD had a lower RMR compared to patients without, regardless of their risk factors or clinical history.
Research reveals that a DNA interval in chromosome 9p21 increases the risk for coronary artery disease by regulating cell division genes, which can lead to vascular cell proliferation and narrowed coronary arteries. The study's findings suggest potential therapies targeting these genes could combat the disease.
Researchers at Duke University Medical Center identified specific metabolic profiles associated with coronary artery disease, heart attacks, and death. The study analyzed metabolites in nearly 10,000 patients and found two sets of metabolites that differentiated between those with and without cardiovascular disease.
Researchers found patients with significant coronary artery disease had a significantly lower cardiac respiratory stress response compared to those without the condition. The test uses a Pulse Oximeter to measure blood flow in response to paced breathing, with high accuracy and sensitivity.
A Massachusetts General Hospital study found significantly more coronary atherosclerotic plaques and obstructive coronary artery disease in HIV-infected men with minimal cardiac risk factors. The research highlights the importance of addressing cardiovascular risk factors early in HIV disease.
The new series aims to address the shortage of geriatric expertise in healthcare. The series will explore themes that develop with aging, such as frailty and loss of independence. By analyzing real stories of patients and interviews, it will provide clinicians with pragmatic tools for translating evidence into daily practice.
A study found that ethnic background, body mass index, and heart rate impact the diagnostic accuracy of MDCT scans. Researchers say advances in scanners can improve image quality for more accurate diagnoses.
A study found that patients with peripheral arterial disease (PAD) and no symptoms of heart disease are at high risk for cardiovascular events. Asymptomatic coronary artery disease was detected in 24% of PAD patients through non-invasive imaging, highlighting the need for extensive cardiovascular risk factor management.
A new study published in the Journal of the American College of Cardiology found that women are less likely to exhibit signs of structural heart disease, which is a precursor to fatal cardiac arrest. This means that fewer women may be eligible for current treatments that can prevent sudden cardiac arrest.
Researchers found that nearly half of patients with normal SPECT scans had moderate to severe coronary artery calcification, indicating high cardiac risk. Integrating CACS testing into functional SPECT scans can identify patients at high long-term risk and improve outcomes.
A quality improvement program increased hospitals' adherence to evidenced-based therapies, narrowing gender- and age-related disparities in coronary artery disease care. Average adherence improved significantly across all patient groups.
The BARI 2D study found that diabetic patients with stable coronary artery disease benefit from a global care approach, combining medical management and revascularization strategies. A total of 42% of patients required revascularization within 5 years, highlighting the importance of comprehensive care.
The SYNTAX Trial interim analyses show CABG is superior to PCI in patients with severe coronary artery disease, especially those with diabetes. A multidisciplinary team approach is recommended for decision-making in complex CAD cases.
Women may have a slightly higher risk of death than men in the 30 days following an acute coronary syndrome, but this difference appears to be due to factors such as severity and type of ACS. After adjusting for clinical characteristics and angiographic data, no significant difference in 30-day mortality was found.
A twin study examines associations between depression and coronary artery disease, finding that depression risk increases after diagnosis, especially in men. The long-term effect of coronary artery disease on depression risk is also significant.
A study by Johns Hopkins Medicine found that long-term memory losses and cognitive problems after bypass surgery are caused by coronary artery disease, not the heart-lung machine. Researchers discovered significant cognitive decline in patients with no use of heart-lung devices.
A new study found that intensive in-hospital smoking cessation support significantly increases long-term abstinence rates among heart patients compared to minimal support. Absence of previous heart attack, postsecondary education, and at-home smoking restrictions also contributed to successful cessation.
Researchers found that implementing new techniques to reduce radiation exposure from cardiac computed tomography angiography did not compromise image quality. The study showed a 53.3% reduction in patient radiation doses, with increases in low-volume imaging centers and improved use of lower tube voltage.
A new study published in Archives of Internal Medicine finds that women with chest pain but no coronary artery disease are at an elevated risk for cardiovascular events such as heart attack or stroke. The study suggests that these patients require a different treatment regimen and highlights the need to reevaluate their risk assessment.
Researchers at UT Houston have identified a single gene defect that causes thoracic aortic aneurysms, dissections, coronary artery disease, ischemic stroke, and Moyamoya disease. The study found that mutations in the ACTA2 gene can lead to increased smooth muscle cell multiplication, contributing to blocked or enlarged arteries.
A new urine screening test has shown promise in predicting coronary artery disease by identifying specific protein patterns associated with the condition. The test uses proteome analysis to detect collagen fragments found on the surface of atherosclerotic plaques, achieving an accuracy rate of 84%.
A study of 1970 patients found a strong association between gastroesophageal reflux disease and linked angina. Patients with GERD had a higher prevalence of linked angina than those without GERD symptoms, suggesting that GERD may be misclassified as non-GERD heartburn.
A study found that screening patients with type 2 diabetes for coronary artery disease (CAD) did not significantly reduce the rate of heart attacks or cardiac death. However, participants with normal results had lower event rates than those with abnormalities, suggesting the importance of appropriate diagnostic evaluation.
A study found that routine screening of type 2 diabetics identifies a small group at higher risk, but doesn't significantly impact overall outcome, suggesting unnecessary screening may have economic implications and unnecessary procedures.
Physicians can reduce radiation exposure by using tube current modulation in 'triple rule-out' coronary CT angiography. This technique reduces effective radiation doses from 9.9-31.3 mSv to 5.4-16.6 mSv, comparable image quality and less than nuclear stress test radiation.
The study found that the bioabsorbable stent was safe with only one major adverse event recorded at 2 years, a heart attack, and no new events between 6 months and 2 years. The device had been fully absorbed by 2 years, reducing the chance of restenosis.