14,199 results match your criteria: "Quebec Heart & Lung Institute[Affiliation]"

Evaluating the performance of the BOADICEA model in predicting 10-year breast cancer risks in UK Biobank.

J Natl Cancer Inst

December 2024

Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK.

Background: The BOADICEA model predicts breast cancer risk using cancer family history, epidemiological and genetic data. We evaluated its validity in a large prospective cohort.

Methods: We assessed model calibration, discrimination and risk classification ability in 217,885 women (6,838 incident breast cancers) aged 40-70 years old of self-reported White ethnicity with no previous cancer from the UK Biobank.

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Background: Canada is the only country with universal health care lacking universal pharmaceutical care (pharmacare). Currently, a minority portion of the population has drug coverage. Furthermore, there may be discordance between provincial plans of medications that are covered.

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Transcatheter Edge-to-Edge Repair in Patients With Complex Tricuspid Valve Anatomy.

JACC Cardiovasc Interv

December 2024

University of Virginia, Charlottesville, Virginia, USA. Electronic address: https://twitter.com/psorajja.

Article Synopsis
  • Untreated severe tricuspid regurgitation (TR) is linked to poor health outcomes, making effective treatment essential.
  • The study evaluated the 1-year results of transcatheter edge-to-edge repair (TEER) using the TriClip system in patients with complex tricuspid valve issues, finding significant improvements in patient survival and quality of life.
  • Results showed that 81% of patients experienced a reduction in TR to moderate or less after one year, with no major adverse effects noted in the first 30 days post-procedure.
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Despite the challenges associated with periprocedural imaging, transcatheter tricuspid valve interventions have shown important impact on outcomes. A comprehensive understanding of the anatomy of the right heart and surrounding structures is crucial. One way to optimize these interventions is by identifying the optimal fluoroscopic viewing angles along the S-curve of the tricuspid valve.

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ATP citrate lyase (ACLY), a crucial enzyme in de novo lipid synthesis and histone acetylation, plays a key role in regulating vascular smooth muscle cell (VSMC) proliferation and survival. We found that human coronary and pulmonary artery tissues had up-regulated ACLY expression during vascular remodeling in coronary artery disease and pulmonary arterial hypertension. Pharmacological and genetic inhibition of ACLY in human primary cultured VSMCs isolated from the coronary arteries of patients with coronary artery diseases and from the distal pulmonary arteries of patients with pulmonary arterial hypertension resulted in reduced cellular proliferation and migration and increased susceptibility to apoptosis.

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Aims: Catheter-based radiofrequency renal denervation (RF RDN) is an interventional treatment for uncontrolled hypertension. This analysis explored the therapy's lifetime cost-effectiveness in a Canadian healthcare setting.

Materials And Methods: A decision-analytic Markov model was used to project health events, costs, and quality-adjusted life years over a lifetime horizon.

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The human voltage-gated sodium channel Na1.5 (hNa1.5/SCN5A) plays a critical role in the initiation and propagation of action potentials in cardiac myocytes, and its modulation by various drugs has significant implications for cardiac safety.

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Article Synopsis
  • Wearable devices can help manage chronic diseases and promote healthier lifestyles by improving adherence to physical activity and managing conditions like type 2 diabetes.
  • The study seeks to identify chronic diseases in intervention research, the types of wearable technology used, and the health outcomes measured in these studies.
  • Conducted as a scoping review, the researchers analyzed studies from 2012 to 2022, including 79 relevant studies after screening thousands of titles and abstracts to focus on adults with chronic diseases using wearables that automatically collect data.
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Introduction: Patients with uncontrolled, moderate-to-severe asthma have a higher risk for exacerbations, negatively impacting lung function and quality of life. Dupilumab, a fully human monoclonal antibody, blocks interleukins 4 and 13, key and central drivers of type 2 inflammation. Dupilumab has been effective in the treatment of certain types of moderate-to-severe asthma across several clinical trials.

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Article Synopsis
  • Accelerated decline in lung function is linked to chronic respiratory diseases, and while genetics play a role, few genetic connections have been found.
  • This study aimed to investigate genetic variants associated with lung function decline using genome-wide association studies (GWAS) across diverse populations in multiple cohorts.
  • They identified 361 significant genetic variants potentially related to lung function declines, with some replicated in additional cohorts, indicating strong genetic influences on respiratory health.
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Article Synopsis
  • - The study examined how the Villalta Scale (VS) for diagnosing postthrombotic syndrome (PTS) varied between self-reported Black and White patients in a trial focused on improving outcomes after deep vein thrombosis (DVT).
  • - Results showed that while overall VS scores were similar between the two racial groups, Black participants had a significantly lower score for one specific sign (venous ectasia), indicating potential differences in symptom reporting or clinician evaluation.
  • - The study highlights potential racial disparities in the assessment of PTS symptoms and suggests the need for further investigation into how race may influence clinician ratings and patient experiences.
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Impact of intensive versus nonintensive antithrombotic treatment on device-related thrombus after left atrial appendage closure.

Rev Esp Cardiol (Engl Ed)

December 2024

Institut Clínic Cardiovascular (ICCV), Hospital Clínic de Barcelona, Instituto de Investigaciones Biomédicas August Pi i Sunyer (IDIBAPS), Barcelona, Spain.

Introduction And Objectives: The optimal antithrombotic therapy (AT) after left atrial appendage closure (LAAC) is debated. We assessed the impact of intensive vs nonintensive AT on the incidence of device-related thrombus (DRT) based on whether the device implantation was classified as optimal or suboptimal.

Methods: This study included patients who underwent successful LAAC in 9 centers.

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Exercise and Fitness Quantification in Clinical Practice: Why and How; and Where Are We Going?

Can J Cardiol

December 2024

Institut Universitaire de Cardiologie et de Pneumologie de Québec-Université Laval, Québec City, Québec, Canada; Faculty of Pharmacy, Laval University, Québec City, Québec, Canada.

Article Synopsis
  • - Exercise quantification is crucial in preventive cardiology, helping clinicians tailor interventions, monitor progress, and evaluate patient risk profiles based on their exercise habits.
  • - The article emphasizes adherence to guidelines from major health organizations and the importance of exercise frameworks, focusing on various populations and specific training methods such as high-intensity interval training.
  • - Future advancements in exercise and fitness quantification include using wearable technology, telemedicine, and incorporating behavioral science to improve patient adherence and overall cardiovascular health.
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Background: Current guidelines recommend a strategy of clinical surveillance (CS) for patients with asymptomatic severe aortic stenosis (AS) and a normal left ventricular ejection fraction.

Objectives: The aim of this study was to conduct a study-level meta-analysis of randomized controlled trials (RCTs) evaluating the effect of early aortic valve replacement (AVR) compared with CS in patients with asymptomatic severe AS.

Methods: Studies were quantitatively assessed in a meta-analysis using random-effects modeling.

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Article Synopsis
  • The COMPLETE trial showed that complete revascularization in STEMI patients with multivessel disease leads to better health outcomes than treating only the culprit lesion.
  • This subanalysis focused on whether having a nonculprit lesion (NCL) in the proximal/mid left anterior descending artery (LAD) affects outcomes compared to NCLs in other locations.
  • Results indicated that while the presence of a proximal/mid-LAD NCL did not significantly alter treatment benefits, complete revascularization consistently reduced major cardiovascular events across both groups.
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Extreme LDL-C concentration is associated with increased cardiovascular disease in women with homozygous familial hypercholesterolemia.

J Clin Lipidol

November 2024

Lipids, Nutrition, and Cardiovascular Prevention Clinic of the Montreal Clinical Research Institute, Montreal, Québec, Canada; Department of Medicine, Divisions of Experimental Medicine and Medical Biochemistry, McGill University, Montreal, Québec H3G 2M1, Canada. Electronic address:

Background: Homozygous familial hypercholesterolemia (HoFH) is a rare genetic disease of low-density lipoprotein cholesterol (LDL-C) metabolism. Despite the devastating effect of this disease on atherosclerotic cardiovascular health, the disease phenotype and severity are more heterogeneous than previously thought. The predictors of atherosclerotic cardiovascular disease (ASCVD) in HoFH patients have never been systematically studied.

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Transcranial direct current stimulation (tDCS), a non-invasive brain stimulation technique, has been shown to increase exercise performance in strength and cycling studies but its effects on running endurance remain unclear. The objectives of this randomized sham-controlled crossover trial were to assess tDCS efficacy on submaximal treadmill running time to exhaustion (TTE). Forty-five healthy male runners aged between 18 and 32 years (mean maximal oxygen consumption: 46.

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The Canadian Consortium on Neurodegeneration in Aging (CCNA) was created by the Canadian federal government through its health research funding agency, the Canadian Institutes for Health Research (CIHR), in 2014, as a response to the G7 initiative to fight dementia. Two five-year funding cycles (2014-2019; 2019-2024) have occurred following peer review, and a third cycle (Phase 3) has just begun. A unique construct was mandated, consisting of 20 national teams in Phase I and 19 teams in Phase II (with research topics spanning from basic to clinical science to health resource systems) along with cross-cutting programs to support them.

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Beyond the Waveform: Artificial Intelligence-Enhanced Electrocardiogram for Left Ventricular Ejection Fraction Prediction.

Can J Cardiol

December 2024

Montreal Heart Institute, Montréal, Québec, Canada; Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada; HeartWise.ai, Montreal Heart Institute, Montréal, Québec, Canada.

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Neurological injury drives most deaths and morbidity among patients hospitalized for out-of-hospital cardiac arrest (OHCA). Despite its clinical importance, there are no effective pharmacological therapies targeting post-cardiac arrest (CA) neurological injury. Here, we analyzed circulating immune cells from a large cohort of patients with OHCA, finding that lymphopenia independently associated with poor neurological outcomes.

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Article Synopsis
  • The study investigates differences in thrombo-inflammatory responses and outcomes between non-COVID-19 community-acquired pneumonia (CAP) and COVID-19 CAP in hospitalized adults in Canada.
  • Non-COVID-19 CAP patients displayed lower 28-day mortality rates and fewer complications compared to those with COVID-19, indicating a more effective immune response developed over time against bacterial infections.
  • The findings suggest that the complexities of the immune response to COVID-19 resulted in higher mortality rates, highlighting the challenges posed by emerging viruses compared to known pathogens.
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Article Synopsis
  • The study examined differences in echocardiographic assessments of native and bioprosthetic aortic valves between core laboratories and clinical centers, finding clinically relevant discrepancies.
  • Data was collected from the PERIGON trial, which involved patients undergoing surgical aortic valve replacement, and involved comparing echocardiographic results from centers to independent analysis by a core lab.
  • Results showed that while some continuous measurements had high agreement (around 0.90), there were notable variances, particularly in left ventricular outflow tract area and stroke volume, indicating the need for standardized evaluation practices.
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  • This study examined how postpartum preeclampsia affects maternal and neonatal outcomes using data from over 1.3 million pregnancies in Quebec from 2006 to 2022.
  • Postpartum preeclampsia was less common than antepartum preeclampsia but was linked to higher risks of preterm birth, placental abruption, and severe maternal complications.
  • The research suggests that women who experience postpartum preeclampsia should have their blood pressure monitored for up to six weeks after delivery to identify any adverse effects.
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Targeting proprotein convertase subtilisin/kexin type 7 in macrophages as a therapeutic strategy to mitigate myocardial infarction-induced inflammation.

BMB Rep

December 2024

Heart-Immune-Brain Network Research Center, Department of Life Sciences, Ewha Womans University, Seoul 03760, Korea; Imvastech Inc., Seoul 03760, Korea.

Myocardial infarction (MI), a major form of coronary artery disease (CAD), triggers a severe inflammatory response in the heart, resulting in increased cell death and adverse ventricular remodeling. Despite treatment advancements, MI remains a significant risk factor for heart failure, underscoring the necessity for a more in-depth exploration of immune cell mechanisms. Proprotein convertase subtilisin/kexin type 7 (PCSK7), expressed in various tissues and immune cells, has been implicated in cardiovascular disease, yet its specific role in cardiac immune cells remains poorly understood.

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