References of "Pierard, Luc"
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See detailESC working group on valvular heart disease position paper-heart valve clinics: organization, structure, and experiences
LANCELLOTTI, Patrizio ULg; Rosenhek, R; Pibarot, P et al

in European Heart Journal (2013)

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See detailA simplified model for mitral valve dynamics.
Moorhead, K. T.; Paeme, Sabine ULg; Chase, J. G. et al

in Computer Methods & Programs in Biomedicine (2013), 109(2),

Located between the left atrium and the left ventricle, the mitral valve controls flow between these two cardiac chambers. Mitral valve dysfunction is a major cause of cardiac dysfunction and its dynamics ... [more ▼]

Located between the left atrium and the left ventricle, the mitral valve controls flow between these two cardiac chambers. Mitral valve dysfunction is a major cause of cardiac dysfunction and its dynamics are little known. A simple non-linear rotational spring model is developed and implemented to capture the dynamics of the mitral valve. A measured pressure difference curve was used as the input into the model, which represents an applied torque to the anatomical valve chords. A range of mechanical model hysteresis states were investigated to find a model that best matches reported animal data of chord movement during a heartbeat. The study is limited by the use of one dataset found in the literature due to the highly invasive nature of getting this data. However, results clearly highlight fundamental physiological issues, such as the damping and chord stiffness changing within one cardiac cycle, that would be directly represented in any mitral valve model and affect behaviour in dysfunction. Very good correlation was achieved between modeled and experimental valve angle with 1-10% absolute error in the best case, indicating good promise for future simulation of cardiac valvular dysfunction, such as mitral regurgitation or stenosis. In particular, the model provides a pathway to capturing these dysfunctions in terms of modeled stiffness or elastance that can be directly related to anatomical, structural defects and dysfunction. [less ▲]

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See detailIdentification of protein biomarkers associated with cardiac ischemia by a proteomic approach.
Fillet, Marianne ULg; Deroyer, Céline ULg; COBRAIVILLE, G. et al

in Biomarkers : biochemical indicators of exposure, response, and susceptibility to chemicals (2013), 18(7), 614-24

Angina is chest pain induced by ischemia of the heart muscle, generally due to obstruction or spasm of the coronary arteries. People that suffer from average to severe cases of angina have an increased ... [more ▼]

Angina is chest pain induced by ischemia of the heart muscle, generally due to obstruction or spasm of the coronary arteries. People that suffer from average to severe cases of angina have an increased percentage of death before the age of 55, usually around 60%. Therefore, prevention of major complications, optimizing diagnosis, prognosis and therapeutics are of primary importance. The main objective of this study was to uncover biomarkers by comparing serum protein profiles of patients suffering from stable or unstable angina and controls. We identified by non-targeted proteomic approach and confirmed by the means of independent techniques, the differential expression of several proteins indicating significantly increased vascular inflammation response, disturbance in the lipid metabolism and in atherogenic plaques stability. [less ▲]

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See detailSystemic Active and Total Myeloperoxidase Levels in Coronary Artery Disease.
GACH, Olivier ULg; MAGNE, Julien ULg; Franck, Thierry ULg et al

in Cardiology (2013), 126(Suppl. 2), 1-521

Backgound: Measurement of total Myeloperoxidase (MPO) by ELISA is considered as a marker of neutrophil activation but is not the true indicator of the degree of its activity. In a dynamic pathology such ... [more ▼]

Backgound: Measurement of total Myeloperoxidase (MPO) by ELISA is considered as a marker of neutrophil activation but is not the true indicator of the degree of its activity. In a dynamic pathology such as atherosclerosis, it may be important to measure the real active part of MPO because it represents the true witness of the oxidant potential of the enzyme. Aim: To identify the relation between coronary artery disease identified by coronaro-angiography on measured serum total and active MPO levels and evaluate the correlation between these MPO levels and the presence of clinically defined unstable condition. Methods: Prospective analyse of serum samples of patients before (within 30 min) coronaro-angiography. Total and active MPO concentrations were assessed by sandwich Elisa and SIEFED® method’s respectively. Results: Two hundred and twenty patients were included in this study (age: 66.1±10.7 years, 67% of male). Among these, 62% presented significant coronary artery disease (stenosis more than 60% at least in one épicardial coronary artery). Twenty four patients (11%) presented unstable coronary syndrome. Mean active and total MPO in the general population were 50.1±63.5 and 147.6±223.3 ng.mL-1 respectively. In comparison, mean active MPO was 47.1±47.9 ng.mL-1 in stable patients and 75.1±135.2 ng.mL-1 in unstable patients (p=0.04). Mean total MPO was 146.3±224.7 ng.mL-1 in stable patients and 158.2±215.8 ng.mL-1 in the unstable’s one (p=0.8). There was a significant correlation between active MPO levels and instability (r=0.14, p=0.04) not present for total MPO levels (r=0.016, p=0.8). Conclusion: We observed a correlation between active MPO and clinical instability while there was no correlation with total MPO. Our preliminary results suggest that this marker could be a powerful indicator of instability which could possess an important prognostic impact. This hypothesis requires an evaluation in wider population and during a prolonged follow-up. [less ▲]

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See detailL'imagerie cardiovasculaire multimodalites avant l'implantation d'une prothese valvulaire aortique par voie percutanee.
DAVIN, Laurent ULg; BRUYERE, Pierre-Julien ULg; LANCELLOTTI, Patrizio ULg et al

in Revue Médicale de Liège (2013), 68(2), 86-93

Calcified aortic valve stenosis is the most frequent valvular heart disease in developed countries with a very poor outcome when symptoms develop. However, several of these patients are denied for surgery ... [more ▼]

Calcified aortic valve stenosis is the most frequent valvular heart disease in developed countries with a very poor outcome when symptoms develop. However, several of these patients are denied for surgery. The main reasons are their advanced age (elderly patient), co-morbidities, technical limitations and a very high surgical risk. It is currently possible to propose a Transcatheter Aortic Valve Implantation (TAVI). After selection of candidates, the feasibility of the intervention is analysed. The size of the aortic bioprosthesis must be selected according to the cardiac anatomy. Several cardiac imaging modalities (echocardiography, computed tomography and cardiac MRI) can be used to identify unsuitable situations. Heavy calcifications or tortuosity can thwart the retrograde approach use. The sub-clavian arteries (for the CoreValve) and trans-apical approach (for the Edwards-Sapien) constitute alternatives ways. [less ▲]

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See detailStress echocardiography and mitral valvular heart disease.
Magne, Julien ULg; LANCELLOTTI, Patrizio ULg; Pierard, Luc ULg

in Cardiology Clinics (2013), 31(2), 311-21

The European Society of Cardiology's updated guidelines emphasize the usefulness of exercise stress echocardiography in patients with valvular heart disease. Exercise-induced changes in valve hemodynamics ... [more ▼]

The European Society of Cardiology's updated guidelines emphasize the usefulness of exercise stress echocardiography in patients with valvular heart disease. Exercise-induced changes in valve hemodynamics should be assessed in patients with mitral valve disease. In asymptomatic patients with moderate or severe mitral regurgitation without left ventricular dysfunction/dilatation, exercise stress echocardiography may identify a subset of patients with reduced cardiac event-free survival who are at a higher risk of developing symptoms. In patients with mitral stenosis who are asymptomatic, the development of symptoms during exercise is strongly related to the kinetics of the changes in the systolic pulmonary arterial pressure. [less ▲]

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See detailRecommendations for the echocardiographic assessment of native valvular regurgitation: an executive summary from the European Association of Cardiovascular Imaging.
LANCELLOTTI, Patrizio ULg; Tribouilloy, Christophe; Hagendorff, Andreas et al

in European Heart Journal - Cardiovascular Imaging (2013), 14(7), 611-44

Valvular regurgitation represents an important cause of cardiovascular morbidity and mortality. Echocardiography has become the primary non-invasive imaging method for the evaluation of valvular ... [more ▼]

Valvular regurgitation represents an important cause of cardiovascular morbidity and mortality. Echocardiography has become the primary non-invasive imaging method for the evaluation of valvular regurgitation. The echocardiographic assessment of valvular regurgitation should integrate the quantification of the regurgitation, assessment of the valve anatomy and function, as well as the consequences of valvular disease on cardiac chambers. In clinical practice, the management of patients with valvular regurgitation thus largely integrates the results of echocardiography. It is crucial to provide standards that aim at establishing a baseline list of measurements to be performed when assessing regurgitation. [less ▲]

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See detailThe year 2012 in the European Heart Journal - Cardiovascular Imaging. Part II.
Plein, Sven; Knuuti, Juhani; Edvardsen, Thor et al

in European Heart Journal - Cardiovascular Imaging (2013), 14(7), 613-7

The part II of the best of the European Heart Journal - Cardiovascular Imaging in 2012 specifically focuses on studies of valvular heart diseases, heart failure, cardiomyopathies, and congenital heart ... [more ▼]

The part II of the best of the European Heart Journal - Cardiovascular Imaging in 2012 specifically focuses on studies of valvular heart diseases, heart failure, cardiomyopathies, and congenital heart diseases. [less ▲]

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See detailA prospective study of cardiac valvular status in patients treated with cabergoline for endocrine disease
VROONEN, Laurent ULg; LANCELLOTTI, Patrizio ULg; Tome, M et al

in Symposium "Perspectives in Endocrinology" - Congresses Highlights 2012: ECE Firenze, ENDO Houston, ESPE Leipzig, SFE Toulouse, IWMEN Liège (2013)

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See detailImpact of hemodynamic load on exercise capacity in aortic stenosis
Dulgheru, Raluca Elena ULg; Magne, Julien ULg; Capoulade, R et al

in International Journal of Cardiology (2013)

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See detailLeft ventricular contractile reserve in asymptomatic primary mitral regurgitation
Magne, Julien ULg; Mahjoub, H; PIERARD, Luc ULg et al

in European Heart Journal (2013)

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See detailQuel suivi pour les adultes presentant une cardiopathie congenitale?
Miltner, B.; Pierard, Luc ULg; SEGHAYE, Marie-Christine ULg

in Revue Médicale de Liège (2012), 67(7-8), 407-12

During the last decades, the care of children with congenital heart disease has markedly improved. In consequence, the number of those who reach adulthood is continuously growing. In 2010, the European ... [more ▼]

During the last decades, the care of children with congenital heart disease has markedly improved. In consequence, the number of those who reach adulthood is continuously growing. In 2010, the European Society of Cardiology published guidelines for the management of grown-up congenital heart disease (GUCH) and recommended that each GUCH patient should be examined at least once in a specialized center. Due to their specific needs, this population requires specific and organized care. Indeed, GUCH patients do not only have significant extra-cardiac problems, but also present specific cardiac complications such as right ventricular failure, incisionnal arrhythmias. They may require repeated surgical and/ or percutaneous interventions. Since this emerging population is ageing, they also may suffer from arterial hypertension, diabetes and coronary artery disease. Last but not least, young women with congenital heart disease need specialized advice and care for contraception, follow-up during pregnancy and peripartal management. In order to optimize the follow-up of this growing population, a shared care model where cardiologists, specialized GUCH centers and other specialized centers for the treatment of extra-cardiac problems work in tight collaboration is recommended. [less ▲]

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See detailAnimal Models of Mitral Regurgitation Induced by Mitral Valve Chordae Tendineae Rupture.
Leroux, Aurélia ULg; Moonen, Marie ULg; Pierard, Luc ULg et al

in Journal of Heart Valve Disease (The) (2012), 21

Background – Mitral regurgitation (MR) is a common valvular disease throughout the world. Various diagnostic techniques have been developed to assess the causes and severity of MR, and the therapeutic ... [more ▼]

Background – Mitral regurgitation (MR) is a common valvular disease throughout the world. Various diagnostic techniques have been developed to assess the causes and severity of MR, and the therapeutic approaches to this disease have been widely documented. However, treatments for chronic MR remain controversial, and various animal models of chronic MR (including chordae tendineae rupture, rapid pacing and ischemia) have been developed to study the pathophysiology and therapeutic approaches to this disease. The objective of this paper is to review the animal MR models that have been developed using a mitral valve chordae tendineae rupture technique. Animal models – Dogs and sheep have been the animals most commonly used in MR models induced by mitral valve chordae tendineae rupture, mainly due to considerations of cardiac size. Chordae tendineae cutting is performed using closed or open chest techniques. In the closed chest model, long flexible grasping forceps are positioned percutaneously in order to tear the mitral valve chordae. In the open chest model, cardiopulmonary bypass is performed and either selected chordae are cut under direct visualization, or a non specified number of chordae are cut using a metal device inserted through the left ventricular apex. Whatever the model used, MR has been found to become chronic 3 to 6 months after the induction of MR by chordae rupture. The reported mortality and complication rates of these models are high. Conclusion – In the long term, experimental evolution of chronic MR is similar to the evolution occurring naturally in patients suffering from chronic MR. These models could thus be useful in understanding the disease better and in testing new therapeutic modalities. This review summarizes the physiological effects of each of these techniques and compares the advantages and disadvantages of each procedure. [less ▲]

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See detailSeguimiento prospectivo ecocardiografico de 104 pacientes con enffermedades endocrinologicas tratados con cabergolina
Daly, Adrian ULg; VROONEN, Laurent ULg; Lancellotti, Patrizio ULg et al

in Abstract book - 54 Congreso Sociedad Espanola de Endocrinologia y nutrition (2012, May 23)

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See detailA prospective study of cardiac valvular status in patients treated with cabergoline for Endocrine Disease
VROONEN, Laurent ULg; LANCELLOTTI, Patrizio ULg; TOME, M et al

in Endocrine abstracts - May 2012, volume 29 (2012, May)

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See detailA prospective study of cardiac valvular status in patients treated with cabergoline for Endocrine Disease
VROONEN, Laurent ULg; Lancellotti, Patrizio ULg; Tome Garcia, M et al

in Annales d'Endocrinologie (2012, April), 73(2), 148

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See detailLe cas clinique du mois: Implantation fortuite d'une sonde de defibrillation dans le ventricule gauche au travers d'un foramen ovale permeable.
Bologne, J.C.; Garweg, C.; LANCELLOTTI, Patrizio ULg et al

in Revue Médicale de Liège (2012), 67(2), 58-60

Inadvertent insertion of a defibrillation lead in the left ventricle is a rare complication generally underdiagnosed after device implantation. Management is not strictly codified due to the small number ... [more ▼]

Inadvertent insertion of a defibrillation lead in the left ventricle is a rare complication generally underdiagnosed after device implantation. Management is not strictly codified due to the small number of observed cases. We report the case of a 78 year-old man in whom the diagnosis has been performed lately during an echocardiography. [less ▲]

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See detailClinical outcome in asymptomatic severe aortic stenosis: Insights from the new proposed aortic stenosis grading classification
Lancellotti, Patrizio ULg; Magne, Julien ULg; Donal, E. et al

in Journal of the American College of Cardiology (2012), 59(3), 235-243

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See detailRecurrent stress cardiomyopathy with variable pattern of left ventricle contraction abnormality.
Gach, Olivier; Lempereur, Mathieu; Pierard, Luc ULg et al

in Journal of the American College of Cardiology (2012), 60(3), 5

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See detailEuroEcho and other imaging modalities: highlights.
LANCELLOTTI, Patrizio ULg; Pierard, Luc ULg; Voigt, Jens-Uwe et al

in European Heart Journal - Cardiovascular Imaging (2012), 13(2), 127-31

The annual meeting of the European Association of Echocardiography (EuroEcho and other Imaging Modalities) was held in Budapest, Hungary. In the present paper, we present a summary of the 'Highlights ... [more ▼]

The annual meeting of the European Association of Echocardiography (EuroEcho and other Imaging Modalities) was held in Budapest, Hungary. In the present paper, we present a summary of the 'Highlights' session. [less ▲]

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