Publications
Below you can find a list of our published research.
Below you can find a list of our published research.
253 results
Cited 50 times since 2004 (2.6 per year) source: EuropePMC
Radiology, Volume 233, Issue 3, 1 1 2004, Pages 824-829 Right ventricular function after pulmonary valve replacement in patients with tetralogy of Fallot. van Straten A, Vliegen HW, Hazekamp MG, Bax JJ, Schoof PH, Ottenkamp J, van der Wall EE, de Roos A
Purpose: To assess the time course of right ventricular (RV) function improvement after pulmonary valve replacement (PVR) in patients 25.2 years +/- 7.0 after repair of tetralogy of Fallot. Materials and methods: The medical ethics committee approved this study, and informed consent was obtained. Cardiac magnetic resonance (MR) imaging was performed before, 7 months after, and 19 months after PVR in 25 consecutive patients with tetralogy of Fallot with a 1.5-T MR imager. RV function was assessed... Abstract
Cited 27 times since 2004 (1.4 per year) source: EuropePMC
British journal of anaesthesia, Volume 94, Issue 2, 29 5 2004, Pages 181-185 Gut permeability in paediatric cardiac surgery. Malagon I, Onkenhout W, Klok G, van der Poel PF, Bovill JG, Hazekamp MG
Background: Intestinal mucosal ischaemia can occur in infants and children during and after cardiac surgery. Severe decreases in mucosal perfusion may cause complications such as necrotizing enterocolitis and postoperative mortality. We investigated gut permeability in paediatric patients undergoing cardiac surgery using the dual sugar permeability test and absorption of two other saccharides. Methods: Thirty-four patients undergoing palliative or corrective surgical procedures with and without... Abstract
The Annals of thoracic surgery, Volume 78, Issue 3, 1 1 2004, Pages e58-60 Median sternotomy for reoperation of the distal aortic arch in postcoarctectomy patients. Vriend JW, Mulder BJ, Schoof PH, Hazekamp MG
We report the usefulness of a median sternotomy approach for the surgical treatment of residual aortic gradients or recoarctation and aortic aneurysms. This series confirms that excellent surgical results can be obtained in this technically challenging group of patients needing postcoarctation repair. Abstract
The Annals of thoracic surgery, Volume 77, Issue 6, 1 1 2004, Pages 2262-3; author reply 2263 Use of autologous arterial patches for tracheal reconstruction in young infants. Hazekamp MG, Nijdam N
Cited 55 times since 2003 (2.7 per year) source: EuropePMC
The Journal of thoracic and cardiovascular surgery, Volume 126, Issue 6, 1 1 2003, Pages 2003-2010 Decellularization of rat aortic valve allografts reduces leaflet destruction and extracellular matrix remodeling. Grauss RW, Hazekamp MG, van Vliet S, Gittenberger-de Groot AC, DeRuiter MC
Objectives: Decellularization of aortic valve allografts in advance of transplantation is a promising approach to overcome immune-induced early graft failure. In this study the effects of in vitro cell extraction on extracellular matrix molecules and in vivo remodeling of decellularized aortic valves were investigated in a heterotopic aortic valve rat implantation model. Methods: Rat aortic valve conduits were decellularized by a 2-step detergent-enzymatic extraction method involving sodium dode... Abstract
Cited 1 times since 2003 (0 per year) source: EuropePMC
The Annals of thoracic surgery, Volume 76, Issue 5, 1 1 2003, Pages 1748 Evaluation of rerouting surgery of a coronary artery anomaly by magnetic resonance angiography. Salm LP, Bax JJ, Lamb HJ, Hazekamp MG, de Roos A, van der Wall EE, Vliegen HW
Cited 1 times since 2003 (0 per year) source: EuropePMC
Perfusion, Volume 18, Issue 6, 1 1 2003, Pages 357-362 Increasing the antioxidative capacity of neonatal cardiopulmonary bypass prime solution: an in vitro study. Draaisma AM, Molicki JS, Verbeet N, Munneke R, Huysmans HA, Berger HM, Hazekamp MG
Inflammation and oxidative damage are believed to play an important role in the postoperative complications after cardiopulmonary bypass (CPB) in neonates. During the preparation of the prime, red blood cells (RBCs) release non-protein-bound iron (NPBI) and free haemoglobin/haem (Hb/haem). The presence of these prooxidants in the prime solution may increase oxidative stress in neonates undergoing CPB. The solution used as the basis of the prime solution may influence the degree of this oxidative... Abstract
Cited 20 times since 2003 (1 per year) source: EuropePMC
Pacing and clinical electrophysiology : PACE, Volume 26, Issue 10, 1 1 2003, Pages 2042-2044 Resynchronization therapy after congenital heart surgery to improve left ventricular function. Roofthooft MT, Blom NA, Rijlaarsdam ME, Bökenkamp R, Ottenkamp J, Schalij MJ, Bax JJ, Hazekamp MG
This report describes the mid-term beneficial hemodynamic effect of biventricular pacing in an infant with congestive heart failure after congenital heart surgery, due to resynchronization of the left and right ventricle, optimization of the AV delay, and (partial) correction of the LV dyssynchrony. Abstract
Cited 31 times since 2003 (1.5 per year) source: EuropePMC
The Journal of thoracic and cardiovascular surgery, Volume 126, Issue 4, 1 1 2003, Pages 1053-1060 Pulmonary artery remodeling in transposition of the great arteries: relevance for neoaortic root dilatation. Lalezari S, Hazekamp MG, Bartelings MM, Schoof PH, Gittenberger-De Groot AC
Objective: Transposition of the great arteries is currently treated by performing the arterial switch operation. Dilatation of the neoaortic root is a late complication with unknown cause. Samples of patients with untreated transposition of the great arteries and patients with normally related great arteries were compared to investigate a possible role for vascular remodeling in the dilatation process. Methods: Aortic and pulmonary artery vessel wall and sinus samples were taken from 20 untreate... Abstract
Cited 12 times since 2003 (0.6 per year) source: EuropePMC
Cardiology in the young, Volume 13, Issue 4, 1 1 2003, Pages 364-366 Severe pulmonary hypertension secondary to a parachute-like mitral valve, with the left superior caval vein draining into the coronary sinus, in a girl with Turner's syndrome. van Heerde M, Hruda J, Hazekamp MG
A 17-year-old girl with Turner's syndrome underwent two cardiac operations due to severe mitral stenosis with pulmonary hypertension, caused by a parachute-like mitral valve. The anomaly was associated with persistence of the left superior caval vein, which drained to the coronary sinus, and non-compaction of the left ventricular myocardium. The association of these lesions is rare in patients with Turner's syndrome. Abstract
Cited 4 times since 2002 (0.2 per year) source: EuropePMC
The Journal of thoracic and cardiovascular surgery, Volume 124, Issue 5, 1 1 2002, Pages 984-990 The morphologic nature of noncommitted ventricular septal defects in specimens with double-outlet right ventricle. Beekman RP, Bartelings MM, Hazekamp MG, Gittenberger-De Groot AC, Ottenkamp J
Background: Lev's contribution to the understanding of the morphology of hearts with double-outlet right ventricle and the surgical feasibility for correction is important and remains in current use. However, the term noncommitted ventricular septal defect remains enigmatic. The aim of this study was to elucidate the morphologic nature of the noncommitted ventricular septal defect in view of its surgical implications. Methods: We examined 67 specimens with double-outlet right ventricle, foc... Abstract
Cited 44 times since 2002 (2 per year) source: EuropePMC
Heart (British Cardiac Society), Volume 88, Issue 5, 1 1 2002, Pages 515-519 ECG predictors of ventricular arrhythmias and biventricular size and wall mass in tetralogy of Fallot with pulmonary regurgitation. Helbing WA, Roest AA, Niezen RA, Vliegen HW, Hazekamp MG, Ottenkamp J, de Roos A, van der Wall EE
Background: In patients with the tetralogy of Fallot, QRS prolongation predicts malignant ventricular arrhythmias. QRS prolongation may result from right ventricular dilatation. The relation of ECG markers to biventricular wall mass and volumes has not been assessed. Objective: To investigate the relations of surface ECG markers of depolarisation and repolarisation to right and left ventricular volume and biventricular wall mass. Methods: 37 Fallot patients (mean (SD) age 17 (9) years) were stud... Abstract
Cited 18 times since 2002 (0.8 per year) source: EuropePMC
The Journal of thoracic and cardiovascular surgery, Volume 124, Issue 5, 1 1 2002, Pages 1038-1040 Bovine jugular vein thrombosis in the Fontan circulation. Schoof PH, Koch AD, Hazekamp MG, Waterbolk TW, Ebels T, Dion RA
Cited 4 times since 2002 (0.2 per year) source: EuropePMC
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Volume 22, Issue 5, 1 1 2002, Pages 802-807 Structural degeneration of pulmonary homografts used as aortic valve substitute underlines early graft failure. Koolbergen DR, Hazekamp MG, de Heer E, van Hoorn F, Huysmans HA, Bruijn JA, Dion RA
Objectives: The limited availability of donor valves and experimental evidence that pulmonary valves can withstand systemic pressure made us use cryopreserved pulmonary homografts as aortic valve substitutes. We observed a high incidence of early reoperation because of severe graft insufficiency due to cuspal tears. The mid-term results are evaluated in this study and histological analysis of explanted homografts is performed to investigate the cause of graft failure. Methods: From December 1991... Abstract
Cited 49 times since 2002 (2.3 per year) source: EuropePMC
The Journal of thoracic and cardiovascular surgery, Volume 124, Issue 4, 1 1 2002, Pages 689-697 The pathology of fresh and cryopreserved homograft heart valves: an analysis of forty explanted homograft valves. Koolbergen DR, Hazekamp MG, de Heer E, Bruggemans EF, Huysmans HA, Dion RA, Bruijn JA
Objective: Tissue degeneration reduces the durability of aortic and pulmonary homograft heart valves. Homograft valves can evoke cellular and humoral immune responses that might be detrimental to the valve tissue. Analyzing explanted homograft valves helps in understanding the different factors that eventually lead to tissue degeneration. Methods: A total of 40 homografts was acquired from patients whose grafts had been explanted because of stenosis (n = 22), insufficiency (n = 8), paravalvular... Abstract
Cited 218 times since 2002 (10.1 per year) source: EuropePMC
Circulation, Volume 106, Issue 13, 1 1 2002, Pages 1703-1707 Magnetic resonance imaging to assess the hemodynamic effects of pulmonary valve replacement in adults late after repair of tetralogy of fallot. Vliegen HW, van Straten A, de Roos A, Roest AA, Schoof PH, Zwinderman AH, Ottenkamp J, van der Wall EE, Hazekamp MG
Background: Pulmonary regurgitation (PR) late after total correction for tetralogy of Fallot may lead to progressive right ventricular (RV) dilatation and an increased incidence of severe arrhythmias and sudden death. Timing of pulmonary valve replacement (PVR) is subject to discussion, because the effect of PVR on RV function in adults is unclear. In this study, MRI was used to assess the effect of PVR on RV function and PR. Clinical improvement was established by means of the NYHA classificati... Abstract
Cited 26 times since 2002 (1.2 per year) source: EuropePMC
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Volume 22, Issue 1, 1 1 2002, Pages 70-77 Report of the Dutch experience with the Ross procedure in 343 patients. Takkenberg JJ, Dossche KM, Hazekamp MG, Nijveld A, Jansen EW, Waterbolk TW, Bogers AJ, Dutch Ross Study Group
Objective: Limited information is available on outcome after autograft aortic valve replacement, in particular with respect to the durability of the autograft and of the allograft used to reconstruct the right ventricular outflow tract. A retrospective follow-up study of all patients who underwent a Ross procedure in the Netherlands since 1988 was done to obtain an overview of the Dutch experience with this procedure. Methods: From 1988 to January 2000, 348 Ross procedures were performed in nine... Abstract
Cited 10 times since 2002 (0.5 per year) source: EuropePMC
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Volume 21, Issue 6, 1 1 2002, Pages 1123-1125 Repair of aorto-right ventricular tunnel with pulmonary stenosis and an anomalous origin of the left coronary artery. Hruda J, Hazekamp MG, Sobotka-Plojhar MA, Ottenkamp J
A 5-month-old infant with aorto-right ventricular tunnel, pulmonary stenosis and a sole supply of the left coronary artery from the tunnel underwent closure of the ventricular end of the tunnel, subsequent to balloon pulmonary valvuloplasty. Care was taken not to obstruct the aortic end of the tunnel in order to maintain the left coronary artery perfusion. Abstract
Cited 11 times since 2002 (0.5 per year) source: EuropePMC
The Journal of thoracic and cardiovascular surgery, Volume 123, Issue 4, 1 1 2002, Pages 826-828 Carotid artery patch plasty as a last resort repair for long-segment congenital tracheal stenosis. Dodge-Khatami A, Nijdam NC, Broekhuis E, Von Rosenstiel IA, Dahlem PG, Hazekamp MG
Cited 1 times since 2002 (0 per year) source: EuropePMC
The Annals of thoracic surgery, Volume 73, Issue 2, 1 1 2002, Pages 699 Double-inlet left ventricle: successfully staged ventricular septation with 12.5 years follow-up. Ottenkamp J, Hazekamp MG