References of "Radermecker, Marc"
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See detailLe cas clinique du mois. Remplacement complet de l'aorte ascendante et de la crosse aortique dans un cas de dissection aortique chronique
DURIEUX, Rodolphe ULg; RADERMECKER, Marc ULg; GRENADE, Thierry ULg et al

in Revue Médicale de Liège (2001), 56(3), 140-3

We report the case of a patient who developed an evolutive chronic aortic dissection after ascending aorta replacement for acute type A aortic dissection. Owing to the development of severe aortic ... [more ▼]

We report the case of a patient who developed an evolutive chronic aortic dissection after ascending aorta replacement for acute type A aortic dissection. Owing to the development of severe aortic regurgitation, aortic root pseudoaneurysm and aneurysmal dilatation of the arch and descending aorta, reoperation was adviced. Reoperation included Cabrol modification of the Bentall operation and aortic arch replacement with elephant trunk performed under deep hypothermic circulatory arrest. The incidence of late aneurysmal formation in type 1 aortic dissection has been reported to be 30%. Close postoperative follow-up of the aortic diameter is necessary to detect a critical dilatation and to permit elective reoperation. [less ▲]

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See detailHeart Graft Monitoring by the Ventricular Evoked Response
Mahaux, V.; Demoulin, J.C.; BIESSAUX, Yves ULg et al

in Pacing & Clinical Electrophysiology (2000), 23(11, Pt 2), 2003-5

Monitoring of the negative slew rate of the evoked T wave has been proposed as a noninvasive diagnostic tool to follow heart transplant recipients. The clinical contribution of this measurement on ... [more ▼]

Monitoring of the negative slew rate of the evoked T wave has been proposed as a noninvasive diagnostic tool to follow heart transplant recipients. The clinical contribution of this measurement on telemetrically recorded, paced unipolar ventricular electrograms was evaluated in the detection of grade 3 acute allograft rejection. Thirteen patients undergoing heart transplantation received a DDD pacemaker connected to two epimyocardial leads. Electrograms were recorded and digitized after each endomyocardial biopsy (EMB). The maximum slew rate of the descending slope of the repolarization phase (RSP) was extracted and normalized. A 20% downward shift of RSP from the reference value was considered abnormal. Results of signal processing were blinded during the first 6 months. Eleven patients completed the 6 months blinded period and two patients died. A total of 101 EMB were graded according to the International Society for Heart and Lung Transplantation classification. Grade 3 was assigned to 9 EMB. A significant difference was found between RSP values measured during grade 3 rejection episodes and other RSP values (P < 0.001). A diagnostic model consisting of a single threshold test confirmed the ability of RSP to predict significant signs of rejection on EMB (P < 0.0001). The sensitivity of RSP in detecting grade 3 rejections was 100%, specificity was 81%, negative predictive value 100%, and positive predictive value 35%. The use of RSP as a noninvasive monitoring tool to pose the indication for a biopsy would avoid 73% of EMB. Monitoring of transplanted hearts based on the analysis of the ventricular evoked response is promising and may markedly reduce the number of EMB. [less ▲]

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See detailLa place de l'intervention de Ross (autogreffe pulmonaire) dans la chirurgie de la valve aortique
RADERMECKER, Marc ULg; GRENADE, Thierry ULg; Gach, J. et al

in Revue Médicale de Liège (2000), 55(1), 35-8

The pulmonary autograft operation consists of an aortic replacement using the autologous pulmonary valve. The pulmonary valve is substituted by a cryopreserved pulmonary homograft. This operation is in ... [more ▼]

The pulmonary autograft operation consists of an aortic replacement using the autologous pulmonary valve. The pulmonary valve is substituted by a cryopreserved pulmonary homograft. This operation is in fact a delicate double valve replacement whose benefits are linked to the viability of the new aortic substitute. The pulmonary autograft has superb hemodynamic features and very low thrombogenicity. The report of a selected observation offers the occasion of defining the current indications of this operation in aortic valve surgery. [less ▲]

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See detailTypical Presentation of Intramural Aortic Haemorrhage (Iah) with Evidence of Intimal Tear at Mri and Angiography
RADERMECKER, Marc ULg; LAVIGNE, Jean-Paul ULg; Limet, Raymond ULg

in Acta Chirurgica Belgica (1999), 99(1), 44-6

A typical appearance of IAH was evidenced by CT and TEE in a 56-year-old hypertensive female suspected of developping classical acute aortic dissection (AAD). Further examination with MRI and aortography ... [more ▼]

A typical appearance of IAH was evidenced by CT and TEE in a 56-year-old hypertensive female suspected of developping classical acute aortic dissection (AAD). Further examination with MRI and aortography showed unequivocally the presence of an intimal tear in the aortic arch. This coexistence of intimal tear has never been evidenced preoperatively in patients with IAH. This observation demonstrates at the outset that IAH is part of the spectrum of AAD. [less ▲]

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See detailLe traitement des ectasies anevrysmales de l'aorte ascendante par l'intervention de Robicsek
RADERMECKER, Marc ULg; Laurent, S.; Limet, Raymond ULg

in Revue Médicale de Liège (1999), 54(11), 886-8

The technique and the results of the external contention of the dilated ascending aorta by the application of an external Dacron graft are reported. This technique, without replacing the usual graft ... [more ▼]

The technique and the results of the external contention of the dilated ascending aorta by the application of an external Dacron graft are reported. This technique, without replacing the usual graft interposition, can efficiently and expeditiously treat borderline dilatation of the ascending aorta, as frequently encountered in aortic valve disease. If the sinotubular junction is not dilated, this technique may stop the aneurysmal evolution of the ascending aorta. [less ▲]

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See detailPrise en charge médico-chirurgicale des enfants cardiopathes: résultats de l'expérience liégeoise
Massin, M.M.; RADERMECKER, Marc ULg; Jalali, H. et al

in Revue Médicale de Liège (1999), 54(2), 95-9

OBJECTIVE: Evaluation of the results obtained in the management of congenital heart diseases in Liege. MATERIAL AND METHODS: We evaluated the results, the mortality and the morbidity of diagnostic and ... [more ▼]

OBJECTIVE: Evaluation of the results obtained in the management of congenital heart diseases in Liege. MATERIAL AND METHODS: We evaluated the results, the mortality and the morbidity of diagnostic and interventional cardiac catheterization, and of the cardiac surgery in the 123 cardiac children who were referred to us during the three first years of operation of our medico-surgical team. RESULTS: 89 children underwent a catheterization, including 12 therapeutic interventions, whereas 68 were operated. In the two domains, the results are completely comparable with those of the established centers. CONCLUSIONS: The widening of the activity of paediatric cardiology and the creation of an activity of pediatric cardiac surgery in Liege appeared important to us for the quality of management of the cardiac children. This goal could be reached only if our results were comparable with those of the literature. The bet seems to be held. The ultimate objective is to contribute by an adequate policy of management to the quality of life and the health of the cardiac children. [less ▲]

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See detailL'assistance cardiaque par muscle strie squelettique transforme: la cardiomyoplastie
RADERMECKER, Marc ULg; Defraigne, Jean-Olivier ULg; Limet, Raymond ULg

in Revue Médicale de Liège (1998), 53(2), 88-90

The biomechanical potential of transformed skeletal muscle used for cardiocirculatory assistance is the keystone of this surgical concept. This underscores the necessity to modulate type II to type I ... [more ▼]

The biomechanical potential of transformed skeletal muscle used for cardiocirculatory assistance is the keystone of this surgical concept. This underscores the necessity to modulate type II to type I transformation to premise the muscle bulk, shortening velocity, and, therefore, power. It is only if an efficient autologous engine is available that optimal surgical configuration (i.e. aortomyoplasty) will provide active cardiocirculatory support. [less ▲]

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See detailLa transposition corrigée des gros vaisseaux ou double discordance
RADERMECKER, Marc ULg; Limet, Raymond ULg

in Revue Médicale de Liège (1997), 52(9), 603-5

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See detailRevascularisation coronaire multiple par pontages exclusivement artériels (mammaires internes et artère radiale gauche)
RADERMECKER, Marc ULg; Grenade, Thierry ULg; Cao-Thian, S.K. et al

in Revue Médicale de Liège (1997), 52(6), 377-8

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See detailTraitement chirurgical de l'insuffisance tricuspide. L'annuloplastie de Carpentier
RADERMECKER, Marc ULg; Limet, Raymond ULg

in Revue Médicale de Liège (1997), 52(3), 159-62

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See detailEvaluation of the Solitary Pulmonary Nodule by Positron Emission Tomography Imaging
BURY, Thierry ULg; Dowlati, A.; Paulus, P. et al

in European Respiratory Journal (1996), 9(3), 410-4

Current noninvasive imaging methods are not sufficiently reliable for accurate detection of malignancy in most solitary pulmonary nodules (SPNs). Positron emission tomography (PET) using 18 ... [more ▼]

Current noninvasive imaging methods are not sufficiently reliable for accurate detection of malignancy in most solitary pulmonary nodules (SPNs). Positron emission tomography (PET) using 18-fluorodeoxyglucose (FDG), showing increased FDG uptake and retention in malignant cells, has proved useful to differentiate malignant from benign tissue and could, therefore, contribute to the evaluation of the SPN. We performed a prospective study of 50 patients referred to the Pneumology Department with unclear diagnoses of SPN after conventional radiological screening. PET study was performed on each subject before an invasive procedure was proposed. Thirty three patients had a malignant nodule and 17 had a benign nodule. The mean size of malignant nodule was 3 cm (range 1.5-4.5 cm). All showed a marked increase in 18-FDG uptake. The mean size of benign nodule was 1.8 cm (range 0.5-3.5 cm). PET imaging showed the absence of 18-FDG uptake and correctly identified 15 of 17 benign nodules. There was two false-positive cases with a moderate increase in 18-FDG uptake (1 postprimary tuberculosis; and 1 anthracosilicotic nodule with nonspecific inflammation). At present, the sensitivity and specificity of the method are 100 and 88%, respectively. The positive and negative predictive values of PET imaging for SPNs are 94 and 100%, respectively. Our preliminary results demonstrate that PET-FDG imaging is a noninvasive technique, which appears highly accurate in differentiating malignant SPN from benign SPN. [less ▲]

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See detailLa physiologie de la valvule mitrale
RADERMECKER, Marc ULg; Limet, Raymond ULg

in Revue Médicale de Liège (1995), 50(7), 289-91

Faisant suite à une revue de l'anatomie de l'appareil mitral, les auteurs envisagent la physiologie de la valvule mitrale en étudiant les quatre phénomènes distincts que sont la contraction auriculaire ... [more ▼]

Faisant suite à une revue de l'anatomie de l'appareil mitral, les auteurs envisagent la physiologie de la valvule mitrale en étudiant les quatre phénomènes distincts que sont la contraction auriculaire, la dynamique de l'anneau, les mouvements de la valvule et la dynamique du flux mitral, ainsi que le jeu des muscles papillaires. Cette subdivision didactique ne doit pas estomper le fait que c'est l'intégration de ces phénomènes qui contribue à l'efficacité de la valvule. [less ▲]

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See detailRhythmic and Electrophysiological Study after Dynamic Cardiomyoplasty
RADERMECKER, Marc ULg; Waleffe, André ULg; Gobin, Eric ULg et al

in Pacing & Clinical Electrophysiology (1995), 18(5, Pt 1), 965-72

To question the possible proarrhythmic effects of cardiomyoplasty (CMP), six adult goats were submitted to rhythmic and electrophysiological (EP) study 15 days before and 8 months after a posteroanterior ... [more ▼]

To question the possible proarrhythmic effects of cardiomyoplasty (CMP), six adult goats were submitted to rhythmic and electrophysiological (EP) study 15 days before and 8 months after a posteroanterior clockwise CMP procedure using Medtronic Cardiomyostimulator (CMS) (SP1005) and electrodes (SP5528) and completion of a progressive stimulation protocol. Pre and postoperative screening included a surface ECG, 24-hour Holter monitoring, high amplitude and filtered QRS averaging, and invasive EP study performed in the postoperative period with the CMS "ON" and "OFF." One-hour Holter recording with desynchronization of the CMS was obtained. Comparison of pre and postoperative ECG and rhythmic data showed no significant difference. High amplitude QRS averaging did not evidence meeting the usual criteria of late potentials. EP values were stable in both conditions and the aggressive EP program did not show evidence of increased susceptibility to arrhythmias. Asynchronous cardiomyostimulation did not induce arrhythmias. Our data strongly suggest that provided meticulous surgical technique is used, CMP does not significantly interfere with the electrical characteristics of the normal goat heart. The procedure, despite the disturbances it provokes, does not seem to be arrhythmogenic. The function of the CMS was always appropriate, even under stressful EP conditions. [less ▲]

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See detailPacemaker Implantation for Early Sinus Node Dysfunction after Orthotopic Heart Transplantation
RADERMECKER, Marc ULg; Defraigne, Jean-Olivier ULg; Fourny, J. et al

in Acta Chirurgica Belgica (1995), 95(1), 31-4

Among 60 patients who received OHT at our institution between November 1986 and January 1990, 4 actually needed implantation of a permanent pacemaker. Three patients with symptomatic early sinus node ... [more ▼]

Among 60 patients who received OHT at our institution between November 1986 and January 1990, 4 actually needed implantation of a permanent pacemaker. Three patients with symptomatic early sinus node dysfunction were identified and were satisfactorily paced on the VVIR mode. All three showed sinus recovery within three months following implantation and had their pacemaker switched from the VVIR mode to a simple ventricular demand pacing. Interestingly, administration of beta-blocking drugs quickly reinstituted pace dependence. The patients' outcome is excellent (18 to 48 months follow-up). No difference with the global cohort of our OHT recipients was noticed, apart from an apparent high incidence of infections (3/3) with (2/3) CMV and severe rejection (3/3) during the first month postoperatively. This data suggests that sinus dysfunction may be the result of a multifactorial (rejection, CMV, ...) injury to the conduction system, and is only clinically relevant beyond a threshold level. Denervation hypersensitivity, together with correction of these factors, may account for the restoration of a sufficient reserve of conduction system, and therefore appropriate sinus node function in basal conditions. [less ▲]

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See detailSurgical Technique for Reinforcement Cardiomyoplasty
RADERMECKER, Marc ULg; Chachques, J.C.; Fourny, J. et al

in Acta Chirurgica Belgica (1995), 95(6), 271-4

The current technique for reinforcement cardiomyoplasty in man is detailed. The authors emphasize the critical points that determine the perfect execution of this operation. This innovative surgical ... [more ▼]

The current technique for reinforcement cardiomyoplasty in man is detailed. The authors emphasize the critical points that determine the perfect execution of this operation. This innovative surgical approach to heart failure is continuously evolving and, therefore, may be subject to improvement. The major principles however remain valuable. [less ▲]

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See detailAnatomie chirurgicale de la valvule aortique. Relations avec le corps fibreux central et le tissu de conduction
RADERMECKER, Marc ULg; Limet, Raymond ULg

in Revue Médicale de Liège (1995), 50(7), 286-8

L'anatomie intrinsèque de la valvule aortique est plus simple que celle des valvules auriculo-ventriculaires ; toutefois, de par sa situation anatomique centrale entre les valvules mitrale et tricuspide ... [more ▼]

L'anatomie intrinsèque de la valvule aortique est plus simple que celle des valvules auriculo-ventriculaires ; toutefois, de par sa situation anatomique centrale entre les valvules mitrale et tricuspide en arrière, les sigmoïdes pulmonaires en avant, la valvule aortique présente de multiples rapports qu'il convient de connaître. C'est l'ambition de cette revue que d'illustrer les relations de la valvule aortique avec les structures avoisinantes, de montrer la complexité de son attache à la jontion ventriculo-artérielle, et de rappeler comment sa géométrie très précise permet, en synergie avec les sinus de Valsalva, d'en optimaliser le fonctionnement hémodynamique. [less ▲]

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See detailLa classification fonctionnelle des dysfonctions de la valvule mitrale selon Carpentier
RADERMECKER, Marc ULg; Limet, Raymond ULg

in Revue Médicale de Liège (1995), 50(7), 292-4

Pour aborder le traitement chirurgical de la valvule mitrale autrement, c'est-à-dire par une réparation valvulaire comme alternative raisonnable au remplacement sytématique, il faut recourir à une ... [more ▼]

Pour aborder le traitement chirurgical de la valvule mitrale autrement, c'est-à-dire par une réparation valvulaire comme alternative raisonnable au remplacement sytématique, il faut recourir à une classfication fonctionnelle des dysfonctions mitrales. Cette classification, établie par Carpentier (1, 2) regroupe les dysfonctions valvulaire mitrales en trois rubriques : a) le type caractérisé par des mouvements valvulaires normaux, b) le type 2, équivalent au prolapsus valvulaire, c) le type 3, correspondant à la restriction des mouvements valvulaires. Cette approche nouvelle postule, en outre, qu'une affection valvulaire n'est parfaitement définie que lorsqu'on en connaît l'étiologie, les lésions et les dysfonctions. L'utilisation de cette méthode analytique (qui a l'avantage de la simplicité et de la clarté) permet au chirurgien de réparer la valvule mitrale en adaptant à chaque dysfonction une correction appropriée et, par l'application de règles, d'obtenir des résultats reproductibles (3-6). [less ▲]

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See detailLes insuffisances mitrales ischémiques: principes de leur traitement chirurgical
RADERMECKER, Marc ULg; Limet, Raymond ULg

in Revue Médicale de Liège (1995), 50(7), 295-7

L'insuffisance mitrale ischémique est une manifestation peu fréquente de la maladie cotanarienne. Elle constitue par ailleurs une entité relativement mal connue. Il peut s'agir de complications aiguës ou ... [more ▼]

L'insuffisance mitrale ischémique est une manifestation peu fréquente de la maladie cotanarienne. Elle constitue par ailleurs une entité relativement mal connue. Il peut s'agir de complications aiguës ou chroniques de la maladie ischémique. Leur compréhension est facilité par la classification fonctionnelle de Carpentier. A l'occasion de cette revue, nous précisons les indications elles modalités de traitement de ce type d'insuffisance mitrale. [less ▲]

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