Publications by authors named "Laurence Vaujois"

Obesity factors into hypertrophic cardiomyopathy (HCM)-related risk as a disease modifying environmental factor. Behaviours such as diet and sleep are seldom reported upon in children with HCM. It was our aim to report on these factors in this population.

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Article Synopsis
  • Paediatric hypertrophic cardiomyopathy (HCM) is linked to a higher risk of sudden cardiac death, leading to restrictions on physical activity; this inactivity, combined with rising youth obesity, may negatively impact cardiovascular health in these patients.* -
  • The study involved 56 Canadian HCM patients aged 10-19 and evaluated their cardiovascular health using standardized questionnaires; results showed that many had poor health scores similar to those of the general Canadian youth population.* -
  • Findings indicate a significant number of HCM patients have intermediate or poor cardiovascular health, underscoring the need for targeted interventions to encourage healthier lifestyles and improve overall cardiovascular wellbeing.*
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Background: Hypertrophic cardiomyopathy is a burdensome condition that inflicts both physical and psychological impairment on those with the disease, negatively impacting health-related quality of life (HRQoL). Given the abundance of evidence suggesting a role of physical activity (PA) in modulating HRQoL in healthy populations of children, we sought to determine the relationship between HRQoL and PA in children diagnosed with hypertrophic cardiomyopathy.

Methods And Results: A multicenter prospective observational cohort study was conducted, with patients with hypertrophic cardiomyopathy aged 10 to 19 years being provided a wrist-worn activity tracker (Fitbit Charge HR) to wear for 14 days.

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  • A national registry for congenital heart disease (CHD) in Canada aims to streamline research, cut costs, and enhance statistical power by automatically identifying CHD patients from existing clinical data.
  • This project successfully extracted data from 885,287 echocardiogram reports and 70,121 clinical records, identifying over 43,000 children and nearly 5,000 fetuses with CHD.
  • The initial registry in Québec demonstrates the potential for a centralized, user-friendly database that can support various CHD research projects and potentially expand to a national level.
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Background: The benefit of fetal echocardiograms (FE) to detect severe congenital heart diseases (SCHD) in the setting of a normal second-trimester ultrasound is unclear. We aimed to assess whether the increase in SCHD detection rates when FE are performed for risk factors in the setting of a normal ultrasound was clinically significant to justify the resources needed.

Methods: This is a multicenter, population-based, retrospective cohort study, including all singleton pregnancies and offspring in Quebec (Canada) between 2007 and 2015.

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Article Synopsis
  • Bicuspid aortic valve (BAV) is a common congenital heart defect with genetic links, leading to recommendations for echocardiographic screening of first-degree relatives (FDR) of affected patients.
  • A study conducted at Centre Hospitalier Universitaire de Laval from 2015 to 2018 assessed the screening effectiveness in 713 FDR, revealing that 6.6% had BAV and 5.4% had aortic valve dysfunction, with rare instances of ascending aorta dilatation.
  • Although the prevalence of BAV in FDR aligns with adult studies supporting current screening guidelines, challenges remain in fully implementing these recommendations in pediatric care, including gaps in screening completion and differences in healthcare practices.
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Fibrin sheath formation around long-term indwelling central venous catheters is common and usually benign. Fibrin sheath can persist after catheter removal and rarely leads to complications. This is a report of three pediatric oncology patients that required cardiac surgery for cardiac embolization of a "ghost" catheter several years after catheter removal.

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Background: Aortic valve replacement in children represents an important challenge. Concerns regarding pulmonary autograft and homograft longevity requiring reoperations are well recognized. Very long-term outcomes after the Ross procedure are still unknown.

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Objective: Prenatal detection of congenital heart diseases (CHD) decreases morbidity and cost. To improve detections rates, most physicians refer pregnant women with high-risk pregnancies to fetal cardiologists even when there is no suspicion of CHD at the second trimester screening. This paper presents the rationale and detailed method of the Fetal Cardiac Registry of Québec to Improve Resource Utilization in Fetal Cardiology (FREQUENCY) study.

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Background: The relationship between interatrial communication, ductus arteriosus, and pulmonary flow in transposition of the great arteries and intact ventricular septum may help predict postnatal desaturation.

Methods: Echocardiographic data of 45 fetuses with transposition of the great arteries and intact ventricular septum and 50 age-matched controls were retrospectively reviewed. Interatrial communication, left and right ventricular output, flow in the ductus arteriosus, as well as effective pulmonary flow were measured.

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Arterial stiffness is a predictor of cardiovascular mortality. It increases with age and is accelerated by hypertension and other cardiovascular risk factors. In addition to the disease state, arterial stiffness increases from the proximal to the distal arterial compartments.

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Uhl's anomaly is an evolutive disease leading to terminal right ventricular failure. The most difficult differential diagnosis at presentation is the Ebstein disease. We describe the evolution of a foetus with Uhl's anomaly from 21 to 30 weeks of gestation, with progressive reduction in the right ventricular anterior myocardium suggestive of apoptosis, leading to foetal demise.

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Several studies have suggested that intrauterine growth restriction (IUGR) increases the risk of cardiovascular disease and early atherosclerosis. Early detection of arteriopathy is essential to early intervention. Although arterial intima-media thickness (IMT) is considered an index of subclinical atherosclerosis in the adult, its validity in pediatric patients may be limited.

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Background: The long-term sequelae of Kawasaki disease (KD) are based on the coronary complications. Because KD causes generalized vasculitis, with documented aneurysms in the femoral, iliac, renal, axillary, and brachial arteries, the aim of this study was to assess the biophysical properties of the aorta (BPA) after KD. The BPA are biometric measurements representing vascular structural and dynamic changes in response to cardiac work.

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