Publications
Below you can find a list of our published research.
Below you can find a list of our published research.
884 results
Cited 287 times since 2003 (14 per year) source: EuropePMC
The American journal of cardiology, Volume 92, Issue 10, 1 1 2003, Pages 1238-1240 Left ventricular dyssynchrony predicts benefit of cardiac resynchronization therapy in patients with end-stage heart failure before pacemaker implantation. Bax JJ, Marwick TH, Molhoek SG, Bleeker GB, van Erven L, Boersma E, Steendijk P, van der Wall EE, Schalij MJ
We evaluated patients with end-stage heart failure who have a high likelihood of response to cardiac resynchronization therapy (biventricular pacing). It appears that 20% of patients do not respond to this expensive therapy despite the use of selection criteria (dilated cardiomyopathy, heart failure, New York Heart Association class II or IV, left ventricular ejection fraction 120 ms). The presence of left ventricular dyssynchrony is needed to result in improvement after cardiac resynchronizatio... Abstract
Cited 44 times since 2003 (2.1 per year) source: EuropePMC
American journal of physiology. Heart and circulatory physiology, Volume 286, Issue 2, 9 2 2003, Pages H723-30 Quantification of left ventricular mechanical dyssynchrony by conductance catheter in heart failure patients. Steendijk P, Tulner SA, Schreuder JJ, Bax JJ, van Erven L, van der Wall EE, Dion RA, Schalij MJ, Baan J
Mechanical dyssynchrony is an important codeterminant of cardiac dysfunction in heart failure. Treatment, either medical, surgical, or by pacing, may improve cardiac function partly by improving mechanical synchrony. Consequently, the quantification of ventricular mechanical (dys)synchrony may have important diagnostic and prognostic value and may help to determine optimal therapy. Therefore, we introduced new indexes to quantify temporal and spatial aspects of mechanical dyssynchrony derived fr... Abstract
Cited 62 times since 2003 (3 per year) source: EuropePMC
Circulation, Volume 108, Issue 16, 6 1 2003, Pages 1954-1959 Impact of viability, ischemia, scar tissue, and revascularization on outcome after aborted sudden death. van der Burg AE, Bax JJ, Boersma E, Pauwels EK, van der Wall EE, Schalij MJ
Background: Survivors of aborted sudden death attributable to ventricular arrhythmias in the presence of coronary artery disease are at risk for recurrences. The substrate underlying these arrhythmias is not clear, and therefore the relation between ischemia, viability, scar tissue (and revascularization), and the incidence of ventricular arrhythmias (and survival) was studied over up to 3 years. Methods and results: One hundred fifty-three survivors of sudden death underwent stress-rest perfusi... Abstract
Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation, Volume 11, Issue 10, 1 1 2003, Pages 416-417 Noncompaction cardiomyopathy. Jongbloed MR, Bax JJ, Schalij MJ, van der Wall EE
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 18 times since 2003 (0.9 per year) source: EuropePMC
Journal of cardiovascular electrophysiology, Volume 14, Issue 10, 1 1 2003, Pages 1110-1112 Transvenous biventricular pacing in a child after congenital heart surgery as an alternative therapy for congestive heart failure. Blom NA, Bax JJ, Ottenkamp J, Schalij MJ
Transvenous Biventricular Pacing in Children. Cardiac resynchronization therapy improves short-term and long-term hemodynamics in adult patients with congestive heart failure and left bundle branch block. We describe the feasibility of transvenous biventricular pacemaker implantation in a 6-year-old child with heart failure and wide QRS complex after congenital heart surgery. Myocardial tissue Doppler imaging was used to demonstrate intraventricular dyssynchrony and resynchronization after cardi... Abstract
Cited 57 times since 2003 (2.8 per year) source: EuropePMC
Circulation, Volume 108, Issue 17, 29 5 2003, Pages 2099-2106 Voltage and activation mapping: how the recording technique affects the outcome of catheter ablation procedures in patients with congenital heart disease. de Groot NM, Schalij MJ, Zeppenfeld K, Blom NA, Van der Velde ET, Van der Wall EE
Background: Endocardial mapping is mandatory before radiofrequency catheter ablation (RFCA). Mapping can be performed with either unipolar or bipolar recordings. Impact of the recording technique used was studied in patients with and without structural heart disease using the 3D electroanatomic CARTO mapping system. Methods and results: Patients (n=44; 16 males; age 43+/-16 years) referred for RFCA of atrial flutter (AFL, n=18), focal atrial tachycardia (FAT, n=4), AV nodal reentrant tachycardia... Abstract
Cited 4 times since 2003 (0.2 per year) source: EuropePMC
Atherosclerosis, Volume 169, Issue 2, 1 1 2003, Pages 309-315 Improvement of serum oxidation by pravastatin might be one of the mechanisms by which endothelial function in dilated coronary artery segments is ameliorated. Mulder HJ, Schalij MJ, van der Laarse A, Hollaar L, Zwinderman AH, Bruschke AV
Background: Oxidation susceptibility of lipids in vitro is considered to reflect the exposure of lipids to oxidation stress in vivo which is related to cardiovascular morbidity. This study examined the effect of pravastatin therapy on serum oxidation susceptibility, particularly in relation to endothelial function of coronary arteries. Methods: The participants were recruited from the Pravastatin-Related Effects Following Angioplasty on Coronary Endothelium trial, a double-blinded, placebo-contr... Abstract
Cited 5 times since 2003 (0.2 per year) source: EuropePMC
Heart (British Cardiac Society), Volume 89, Issue 7, 1 1 2003, Pages 703 Area ablation of ventricular tachycardia in a patient with arrhythmogenic right ventricular cardiomyopathy. de Groot NM, Schalij MJ, van der Wall EE
Cited 4 times since 2003 (0.2 per year) source: EuropePMC
European journal of heart failure, Volume 5, Issue 3, 1 1 2003, Pages 315-317 Eligibility for biventricular pacing in patients with an implantable cardioverter defibrillator. Molhoek SG, Bax JJ, van Erven L, Steendijk P, van der Wall EE, Schalij MJ
Implantable cardioverter defibrillator (ICD)-therapy prevents sudden death in patients at high risk, but incidence of death due to heart failure remains unaltered. Recent data suggest that biventricular (BV) pacing is useful in patients with heart failure. It is unclear, how many patients with an ICD indication may have an indication for BV pacing. Therefore all patients who received an ICD were analyzed for eligibility of BV pacing using the following criteria: NYHA class III or IV, QRS duratio... Abstract
Cited 7 times since 2003 (0.3 per year) source: EuropePMC
Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation, Volume 11, Issue 6, 1 1 2003, Pages 250-259 Heart rate variability and sympathovagal balance: pharmacological validation. Bootsma M, Swenne CA, Janssen MJ, Cats VM, Schalij MJ
Rationale: We validated heart rate (HR) and six time and six frequency domain measures of heart rate variability (HRV) as estimators of autonomic outflow in 44 young healthy male subjects. Gold standards for autonomic outflow were the Rosenblueth-Simeone factors m (sympathetic tone) and n (vagal tone), and the sympathovagal balance m·n, determined by two-stage complete autonomic blockade. Methods: Rank correlations were computed between HR and the HRV measures obtained before autonomic blockade,... Abstract
Cited 7 times since 2003 (0.3 per year) source: EuropePMC
Heart (British Cardiac Society), Volume 89, Issue 5, 1 1 2003, Pages 557-558 DD ACE gene polymorphism is associated with increased coronary artery endothelial dysfunction: the PREFACE trial. Mulder HJ, van Geel PP, Schalij MJ, van Gilst WH, Zwinderman AH, Bruschke AV, PREFACE trial
Cited 46 times since 2003 (2.2 per year) source: EuropePMC
The American journal of cardiology, Volume 91, Issue 7, 1 1 2003, Pages 785-789 Impact of percutaneous coronary intervention or coronary artery bypass grafting on outcome after nonfatal cardiac arrest outside the hospital. Borger van der Burg AE, Bax JJ, Boersma E, Bootsma M, van Erven L, van der Wall EE, Schalij MJ
Survivors of cardiac arrest due to ventricular arrhythmias are at risk for recurrent events. The role of revascularization in secondary prevention for survivors of cardiac arrest has been addressed in various studies with conflicting results. A total of 142 survivors of cardiac arrest with coronary artery disease were evaluated according to a standardized protocol, including 2-dimensional echocardiography, myocardial perfusion scintigraphy, coronary angiography, and electrophysiologic testing. R... Abstract
Cited 1 times since 2003 (0 per year) source: EuropePMC
Nederlands tijdschrift voor geneeskunde, Volume 147, Issue 15, 1 1 2003, Pages 708-714 [Risk of ventricular fibrillation in patients with Wolff-Parkinson White syndrome]. Bootsma M, van der Wall EE, Schalij MJ
A 16-year-old boy suddenly fell off his stool, a 26-year-old man had persistent palpitations and a 29-year-old man was reanimated without an incriminating anamnesis. The diagnosis 'Wolff-Parkinson-White(WPW)-syndrome' was made in all three cases. The boy died as a result of postanoxic neurological injury; in the two men, further cardiac rhythm disturbances were prevented by interrupting the accessory atrioventricular connection via radiofrequency catheter ablation. In ECG databases, a... Abstract
Cited 1 times since 2003 (0 per year) source: EuropePMC
Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation, Volume 11, Issue 4, 1 1 2003, Pages 154-158 The impact of an implantable cardioverter defibrillator: the Leiden follow-up study of ICD patients and their partners. de Groot NM, Bootsma M, van der Wall EE, Schalij MJ
Objectives: The goal of this study was to evaluate 1) the presence of psychosocial problems in both ICD patients and their partners, and 2) the relation between psychosocial problems and various clinical variables. Methods: Questionnaires were sent to 219 ICD patients and their partners. Results: Sixty-eight percent of the ICD patients, 122 (81%) male, aged 59±12 years, and 62% of their partners, 28 (21%) male, aged 58±11 years, returned the questionnaires. Anxiety, depression or nervousness was... Abstract
Cited 10 times since 2003 (0.5 per year) source: EuropePMC
European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology, Volume 4, Issue 1, 1 1 2003, Pages 54-58 Radiofrequency catheter ablation of paroxysmal atrial fibrillation; guidance by intracardiac echocardiography and integration with other imaging techniques. Jongbloed MR, Bax JJ, de Groot NM, Dirksen MS, Lamb HJ, de Roos A, van der Wall EE, Schalij MJ
Cited 10 times since 2003 (0.5 per year) source: EuropePMC
The American journal of cardiology, Volume 91, Issue 3, 1 1 2003, Pages 365-367 Usefulness of magnetic resonance imaging in diagnosis of arrhythmogenic right ventricular dysplasia and agreement with electrocardiographic criteria. Kayser HW, de Roos A, Schalij MJ, Bootsma M, Wellens HJ, Van der Wall EE
Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation, Volume 11, Issue 1, 1 1 2003, Pages 15-27 Arrhythmogenic right ventricular dysplasia/cardiomyopathy: new avenues for diagnosis and treatment. van der Wall EE, Bootsma M, Wellens HJ, Bax JJ, de Roos A, Schalij MJ
Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is a heart muscle disorder of unknown course that is characterised pathologically by fatty or fibrofatty replacement of the right ventricular myocardium and electrical instability. Clinical manifestations include structural and functional malformations of the right ventricle, electrocardiographic abnormalities, and presentation of ventricular tachycardias with left bundle branch pattern or sudden death. The disease is often famil... Abstract
Cited 136 times since 2003 (6.4 per year) source: EuropePMC
The American journal of cardiology, Volume 91, Issue 1, 1 1 2003, Pages 94-97 Usefulness of myocardial tissue Doppler echocardiography to evaluate left ventricular dyssynchrony before and after biventricular pacing in patients with idiopathic dilated cardiomyopathy. Bax JJ, Molhoek SG, van Erven L, Voogd PJ, Somer S, Boersma E, Steendijk P, Schalij MJ, Van der Wall EE
Cited 165 times since 2003 (7.7 per year) source: EuropePMC
Circulation, Volume 107, Issue 1, 1 1 2003, Pages 62-67 Intravascular ultrasound guidance improves angiographic and clinical outcome of stent implantation for long coronary artery stenoses: final results of a randomized comparison with angiographic guidance (TULIP Study). Oemrawsingh PV, Mintz GS, Schalij MJ, Zwinderman AH, Jukema JW, van der Wall EE, TULIP Study Thrombocyte activity evaluation and effects of Ultrasound guidance in Long Intracoronary stent Placement
Background: Long coronary lesions treated with stents have a poor outcome. This study compared the 6-month outcome of stent implantation for long lesions in patients randomized to intravascular ultrasound (IVUS; n=73) or angiographic guidance (n=71). Methods and results: Stenoses >20 mm in length and a reference diameter that permitted a stent diameter > or =3 mm were eligible. Primary end points were 6-month minimal lumen diameter (MLD) and the combined end point of death, myocardial infa... Abstract