Publications by authors named "Damien Bonnet"

Background: Infective endocarditis (IE) poses significant risks following percutaneous pulmonary valve implantation (PPVI) or surgical replacement (PVR).

Aims: This study evaluates the effectiveness of emergency percutaneous treatment in stabilizing patients with severe right ventricular dysfunction or obstructive cardiac shock, allowing for delayed surgical or percutaneous valve replacement.

Methods: This retrospective study examines 16 patients (age 19.

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Objective: Automate the extraction of adverse events from the text of electronic medical records of patients hospitalized for cardiac catheterization.

Methods: We focused on events related to cardiac catheterization as defined by the NCDR-IMPACT registry. These events were extracted from the Necker Children's Hospital data warehouse.

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Background: Anomalies of the coronary sinus are rare in the general population but are more frequent in patients with congenital heart defects. Whatever the cardiac anatomy, the coronary sinus is invariably located in the left atrioventricular sulcus, inferior to the wall of the morphologically left atrium.

Methods: A complete morphological examination of a fetal cardiac specimen of the M3C collection, according to segmental analysis, was performed by two observers.

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Article Synopsis
  • - The study compares genotypes between pediatric cardiomyopathy (pCM) and adult-onset cardiomyopathy (aCM) to understand why pCM has earlier onset and differs in severity.
  • - Analysis of 253 pCM patients revealed a higher rate of genetic variants, particularly in restrictive pCM, and identified critical risk factors for adverse outcomes such as early diagnosis and presence of multiple variants.
  • - Genetic testing not only clarified the genetic basis for pCM but also enhanced genetic counseling for families, resulting in cases of prenatal diagnosis.
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Background: Pulmonary hypertension (PH) is an unusual complication of X-linked disease caused by loss-of-function (LOF) variants in the () gene. Patients with LOF may also present dysmorphic facial features, aortic dilation, thrombopenia, and periventricular nodular heterotopia (PVNH).

Methods: We reported clinical, functional, radiologic, and hemodynamic characteristics of patients with LOF variants and PH from the French PH Network.

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Background: Lymphatic disorders such as protein-losing enteropathy, plastic bronchitis, and chylothorax are important complications of the Fontan circulation and ultimately result in an increased risk of early death. Several European centers are now performing lymphatic procedures. The aim of this study is to map the extent of these lymphatic disorders and treatments provided across European pediatric cardiology centers.

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Introduction: Microcephalic osteodysplastic primordial dwarfism (MOPD) syndrome type 2, caused by a mutation in the PCNT gene (21q22.3), is a rare autosomal recessive disorder. Patients present with bone dysplasia, insulin resistance, kidney diseases, and cardiac malformations, making them prone to vascular diseases.

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Background: Sacubitril/valsartan, an angiotensin receptor-neprilysin inhibitor (ARNI), is an established treatment for heart failure (HF) with reduced left ventricular ejection fraction. It has not been rigorously compared with angiotensin-converting enzyme inhibitors in children. PANORAMA-HF (Prospective Trial to Assess the Angiotensin Receptor Blocker Neprilysin Inhibitor LCZ696 Versus Angiotensin-Converting Enzyme Inhibitor for the Medical Treatment of Pediatric HF) is a randomized, double-blind trial that evaluated the pharmacokinetics and pharmacodynamics (PK/PD), safety, and efficacy of sacubitril/valsartan versus enalapril in children 1 month to <18 years of age with HF attributable to systemic left ventricular systolic dysfunction (LVSD).

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The patent ductus arteriosus is a very common condition in preterm infants, and a hemodynamically significant patent ductus arteriosus increases morbidity and mortality in these vulnerable patients. However, despite numerous randomized controlled trials, there is no consensus regarding management. Medical therapy is typically offered as first-line treatment, although it yields limited success and carries the potential for severe adverse events.

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Paediatric pulmonary arterial hypertension (PAH) shares common features with adult disease, but is associated with several additional disorders and challenges that require unique approaches. This article discusses recent advances, ongoing challenges and distinct approaches for caring for infants and children with PAH, as presented by the paediatric task force of the 7th World Symposium on Pulmonary Hypertension. We provide updates on diagnosing, classifying, risk-stratifying and treating paediatric pulmonary hypertension (PH) and identify critical knowledge gaps.

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Article Synopsis
  • Stent implantation, particularly of covered stents like the BeGraft, is increasingly used to treat vessel stenosis in patients with congenital heart diseases due to its potential to reduce complications in complex cases.* -
  • This study analyzed 107 BeGraft stent procedures performed across six European centers from 2016 to 2022, focusing on a diverse group of patients, primarily young, with various heart conditions.* -
  • Results showed that the BeGraft stent was successfully implanted in all cases with relatively low complication rates; however, further long-term studies are needed to assess durability and other potential issues.*
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Background: The primary genetic risk factor for heritable pulmonary arterial hypertension is the presence of monoallelic mutations in the gene. The incomplete penetrance of mutations implies that additional triggers are necessary for pulmonary arterial hypertension occurrence. Pulmonary artery stenosis directly raises pulmonary artery pressure, and the redirection of blood flow to unobstructed arteries leads to endothelial dysfunction and vascular remodeling.

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Article Synopsis
  • UNC93B1 is a protein involved in signaling for Toll-like receptors, which are important for the immune response.
  • Mutations in UNC93B1 (I317M, G325C, L330R, R466S, and R525P) have been linked to conditions like systemic lupus erythematosus (SLE) and chilblain lupus (CBL), exhibiting both autosomal dominant and recessive inheritance patterns.
  • Different mutations impact the activity of TLR7 and TLR8 differently, suggesting that specific mutations in UNC93B1 lead to varying disease mechanisms for SLE and CBL.
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  • The study reviewed the treatment and outcomes of coronary artery fistulas (CAFs) in children, highlighting that the optimal approach is still debated.
  • Out of 94 CAFs in 78 patients, most were asymptomatic, and the majority had successful catheter closures, although some complications arose.
  • The findings suggest that while transcatheter closure is effective for many cases, surgical intervention remains important for complex situations or in cases where catheter procedures fail.
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  • Congenital heart defects (CHDs) are the most common congenital anomalies, affecting almost 1% of newborns, and vary widely in severity and treatment.
  • The study aimed to analyze long-term survival rates in newborns with CHD and to create predictive models for infant mortality using the Anatomic and Clinical Classification of CHD (ACC-CHD).
  • Results showed an overall 8-year survival rate of 96% for isolated CHDs, with survival rates differing significantly among categories, from 99.5% for some conditions to as low as 34% for more severe cases.
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Dilated cardiomyopathy (DCM) is the most common childhood cardiomyopathy and is associated with considerable early mortality. Heart transplantation is often the only viable life-saving option. Pulmonary artery banding (PAB) has been recently proposed as a bridge or alternative to transplantation for DCM.

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Background: Bone morphogenetic proteins 9 and 10 (BMP9 and BMP10), encoded by and , respectively, play a pivotal role in pulmonary vascular regulation. variants have been reported in pulmonary arterial hypertension (PAH) and hereditary haemorrhagic telangiectasia (HHT). However, the phenotype of and carriers remains largely unexplored.

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Background: Functional abnormalities of the ascending aorta (AA) have been mainly reported in young patients who underwent arterial switch operation (ASO) for transposition of the great arteries (TGA).

Objectives: To compare systolic, diastolic brachial and central blood pressures (bSBP, bDBP, cSBP, cDBP), aortic biomechanical parameters, and left ventricular (LV) afterload criteria in adult ASO patients with healthy controls and to assess their relationships with LV remodeling and aortic size.

Materials And Methods: Forty-one prospectively enrolled patients (16.

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Background And Aims: Cardiopulmonary fitness in congenital heart disease (CHD) decreases faster than in the general population resulting in impaired health-related quality of life (HRQoL). As the standard of care seems insufficient to encourage and maintain fitness, an early hybrid cardiac rehabilitation programme could improve HRQoL in CHD.

Methods: The QUALIREHAB multicentre, randomized, controlled trial evaluated and implemented a 12-week centre- and home-based hybrid cardiac rehabilitation programme, including multidisciplinary care and physical activity sessions.

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Article Synopsis
  • - The study examines a modified clinical classification for pediatric patients with pulmonary arterial hypertension associated with congenital heart disease (PAH-CHD), focusing on conditions like atrial septal defects (ASD) and transposition of the great arteries (TGA) using data from the TOPP-1 registry.
  • - 223 out of 531 patients in the registry had PAH-CHD, categorized into groups based on their conditions; 193 were classified, revealing a distribution across predefined categories without any significant survival differences between the groups compared to idiopathic PAH patients.
  • - The conclusions suggest that the modified classification better suits pediatric PAH-CHD cases, though it indicates that some patients without shunts are still un
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We report on a 6-year-old girl (18 kg/120 cm) who was diagnosed on day 6 postoperative with an occlusive thrombosis of a right ventricle-to-pulmonary artery conduit in the setting of a Ross procedure that was performed for severe native aortic valve insufficiency secondary to late diagnosis of bacterial endocarditis. We applied the Indigo® aspiration system from Penumbra® (Alameda, USA) to mechanically dissolve and remove the thrombus, restore flow, gradually wean from extracorporeal support, and replace the conduit after 4 days. The patient experiences good surgical outcomes at 3 months of follow-up.

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Unlabelled: The purpose of the study is to assess the risks of neurodevelopmental morbidity among preterm and growth restricted youth with congenital heart defects (CHD). This systematic review and meta-analysis included observational studies assessing neurodevelopmental outcomes among children with CHD born preterm (i.e.

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