Publications
Below you can find a list of our published research.
Below you can find a list of our published research.
138 results
Cited 65 times since 2006 (3.6 per year) source: EuropePMC
The American journal of cardiology, Volume 97, Issue 8, 2 1 2006, Pages 1220-1222 Effect of radiofrequency catheter ablation for atrial fibrillation on left atrial cavity size. Tops LF, Bax JJ, Zeppenfeld K, Jongbloed MR, van der Wall EE, Schalij MJ
Left atrial (LA) remodeling is associated with atrial fibrillation (AF). Radiofrequency catheter ablation offers a good treatment option for AF, with reasonable long-term results. The purpose of the present study was to assess whether LA reverse remodeling occurs after successful catheter ablation. Fifty-seven consecutive patients (45 men; age 53 +/- 8 years) with symptomatic drug-refractory AF were treated with radiofrequency catheter ablation. The patients were divided into 2 groups on the bas... Abstract
Cited 53 times since 2006 (2.9 per year) source: EuropePMC
The American journal of cardiology, Volume 97, Issue 5, 10 2 2006, Pages 662-670 Histology of vascular myocardial wall of left atrial body after pulmonary venous incorporation. Douglas YL, Jongbloed MR, Gittenberger-de Groot AC, Evers D, Dion RA, Voigt P, Bartelings MM, Schalij MJ, Ebels T, DeRuiter MC
During embryonic development, the common pulmonary vein (PV) becomes incorporated into the left atrium, giving rise to separate PV ostia. We describe the consequences of this incorporation process for the histology of the left atrium and the possible clinical implications. The histology of the left atrial (LA) wall in relation to PV incorporation was studied immunohistochemically in 16 human embryos and fetuses, 1 neonate, and 5 adults. The PV wall, surrounded by extrapericardially differentiate... Abstract
Cited 124 times since 2005 (6.7 per year) source: EuropePMC
Heart rhythm, Volume 2, Issue 10, 1 1 2005, Pages 1076-1081 Fusion of multislice computed tomography imaging with three-dimensional electroanatomic mapping to guide radiofrequency catheter ablation procedures. Tops LF, Bax JJ, Zeppenfeld K, Jongbloed MR, Lamb HJ, van der Wall EE, Schalij MJ
Background: The outcome of catheter ablation procedures of cardiac arrhythmias depends on the ability to evaluate the underlying mechanism and to depict target sites for ablation. Fusion of different imaging modalities within one system may improve electroanatomic modeling and facilitate ablation procedures. Objectives: The purpose of this study was to study the feasibility of fusion of multislice computed tomography (MSCT) with electroanatomic mapping to guide radiofrequency catheter ablation o... Abstract
Cited 23 times since 2005 (1.2 per year) source: EuropePMC
Heart (British Cardiac Society), Volume 91, Issue 7, 1 1 2005, Pages 981-990 Clinical applications of intracardiac echocardiography in interventional procedures. Jongbloed MR, Schalij MJ, Zeppenfeld K, Oemrawsingh PV, van der Wall EE, Bax JJ
Cited 5 times since 2005 (0.3 per year) source: EuropePMC
European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology, Volume 6, Issue 5, 2 1 2005, Pages 388-391 Contrast echocardiography as a useful additional diagnostic tool in evaluating a primary cardiac tumor. Haverkamp MC, Scholte AJ, Holman ER, Jongbloed MR, Schippers EF, de Roos A, van der Wall EE, Poldermans D, Bax JJ, Schalij MJ
The current report describes a case of a primary cardiac lymphoma. For early and appropriate treatment of a cardiac mass it is not only important to determine its localization and extension but also to differentiate between malignant and benign lesions. This report demonstrates that not only transthoracic echocardiography but also the other different forms of echocardiography such as transesophageal echocardiography, as well as contrast and intracardiac echocardiography, are useful tools in the... Abstract
Cited 28 times since 2005 (1.5 per year) source: EuropePMC
Circulation research, Volume 96, Issue 7, 10 2 2005, Pages 776-783 Development of the right ventricular inflow tract and moderator band: a possible morphological and functional explanation for Mahaim tachycardia. Jongbloed MR, Wijffels MC, Schalij MJ, Blom NA, Poelmann RE, van der Laarse A, Mentink MM, Wang Z, Fishman GI, Gittenberger-de Groot AC
Atriofascicular accessory bundles with AV-node like conduction properties can sustain atrioventricular (AV) re-entrant tachycardia (Mahaim tachycardia). During early embryogenesis, the AV canal is situated above the primitive left ventricle (LV), and a right AV connection has not been achieved yet. We studied the formation of the right ventricular (RV) inflow tract in relation to the developing cardiac conduction system and hypothesized a morphological explanation for functional atriofascicular... Abstract
Cited 153 times since 2005 (8 per year) source: EuropePMC
Journal of the American College of Cardiology, Volume 45, Issue 5, 1 1 2005, Pages 749-753 Noninvasive visualization of the cardiac venous system using multislice computed tomography. Jongbloed MR, Lamb HJ, Bax JJ, Schuijf JD, de Roos A, van der Wall EE, Schalij MJ
Objectives: We sought to evaluate the value of multislice computed tomography (MSCT) to depict the cardiac venous anatomy. Background: During cardiac resynchronisation therapy (CRT), left ventricular (LV) pacing is established by a pacemaker lead in a tributary of the coronary sinus (CS). Knowledge of the CS anatomy and variations may facilitate the implantation of LV leads. Methods: The MSCT scans of 38 patients (34 men; age 60 +/- 12 years) were studied. Anatomical variants were divided in thr... Abstract
Cited 71 times since 2005 (3.7 per year) source: EuropePMC
Journal of the American College of Cardiology, Volume 45, Issue 3, 1 1 2005, Pages 343-350 Multislice computed tomography versus intracardiac echocardiography to evaluate the pulmonary veins before radiofrequency catheter ablation of atrial fibrillation: a head-to-head comparison. Jongbloed MR, Bax JJ, Lamb HJ, Dirksen MS, Zeppenfeld K, van der Wall EE, de Roos A, Schalij MJ
Objectives: The purpose of this study was to perform a head-to-head comparison between multislice computed tomography (MSCT) and intracardiac echocardiography (ICE). Background: Different imaging techniques have been used to visualize the pulmonary veins (PV) before radiofrequency ablation of atrial fibrillation. Methods: The PV and their atrial insertion were evaluated in 42 patients (35 men, 49 +/- 9 years) admitted for ablation of PV ostia. Ostia were measured in two directions (anterior-post... Abstract
Cited 73 times since 2005 (3.8 per year) source: EuropePMC
Radiology, Volume 234, Issue 3, 21 3 2005, Pages 702-709 Atrial fibrillation: multi-detector row CT of pulmonary vein anatomy prior to radiofrequency catheter ablation--initial experience. Jongbloed MR, Dirksen MS, Bax JJ, Boersma E, Geleijns K, Lamb HJ, van der Wall EE, de Roos A, Schalij MJ
Purpose: To evaluate multi-detector row computed tomographic (CT) depiction of pulmonary veins to provide a road map for radiofrequency catheter ablation. Materials and methods: For patients, institutional review board (IRB) approval was not required, and consent was obtained for treatment. Control subjects were part of an IRB-approved research protocol at the institution, in which they had consented to participate. Multi-detector row CT was performed in 23 patients (17 men, six women; mean age,... Abstract
Cited 38 times since 2004 (2 per year) source: EuropePMC
Circulation, Volume 110, Issue 20, 8 2 2004, Pages 3187-3192 Left atrial tachycardia originating from the mitral annulus-aorta junction. Gonzalez MD, Contreras LJ, Jongbloed MR, Rivera J, Donahue TP, Curtis AB, Bailey MS, Conti JB, Fishman GI, Schalij MJ, Gittenberger-de Groot AC
Background: At the mitral annulus-aorta (MA-Ao) junction, the left atrium is continuous through the subaortic curtain with the musculature of the anterior mitral leaflet. Under experimental conditions, this region can generate abnormal electrical activity. In patients with left atrial tachycardia, we investigated whether this region could be the source of this arrhythmia. Methods and results: In 10 (28%) of 35 consecutive patients with left atrial tachycardia, the arrhythmia originated from the... Abstract
Cited 29 times since 2004 (1.5 per year) source: EuropePMC
Anatomy and embryology, Volume 208, Issue 5, 10 2 2004, Pages 389-393 The neural crest is contiguous with the cardiac conduction system in the mouse embryo: a role in induction? Poelmann RE, Jongbloed MR, Molin DG, Fekkes ML, Wang Z, Fishman GI, Doetschman T, Azhar M, Gittenberger-de Groot AC
In this study we present data on the spatial relationship between neural crest-derived cells (NCC) and the specialized cardiac conduction system (CCS) in the developing murine heart. Using Wnt1-Cre/R26R conditional reporter mice that express beta-galactosidase from ROSA26 upon Cre-mediated recombination, two populations of NCC are seen: one migrates through the arterial pole and contributes to the bundle branches, whereas the second population enters by way of the venous pole and provides cells... Abstract
Cited 9 times since 2004 (0.4 per year) source: EuropePMC
The American journal of cardiology, Volume 93, Issue 10, 1 1 2004, Pages 1298-1302 Anatomical observations of the pulmonary veins with intracardiac echocardiography and hemodynamic consequences of narrowing of pulmonary vein ostial diameters after radiofrequency catheter ablation of atrial fibrillation. Jongbloed MR, Bax JJ, Zeppenfeld K, van der Wall EE, Schalij MJ
Intracardiac echocardiography was used to explore pulmonary venous (PV) anatomy and to monitor PV stenosis in 31 patients referred for radiofrequency catheter ablation at PV ostia. Interindividual variations in PV anatomy and insertion in the left atrium were observed. Narrowing of PV ostia after radiofrequency catheter ablation did not produce significant hemodynamic changes. Abstract
Cited 5 times since 2004 (0.2 per year) source: EuropePMC
The international journal of cardiovascular imaging, Volume 20, Issue 2, 1 1 2004, Pages 113-116 Thrombus in the left atrial appendage detected by intracardiac echocardiography. Jongbloed MR, Bax JJ, van der Wall EE, Schalij MJ
Radiofrequency catheter ablation (RFCA) at the ostium of the pulmonary veins can potentially cure atrial fibrillation. Left-sided ablation procedures may carry a risk of thrombo-embolic events. Emboli from intracardiac thrombus originate from the left atrial appendage (LAA) in a substantial number of patients. The presence of spontaneous echo contrast in the left atrium (LA) and LAA peak emptying flow < or = 20 cm/s are also significantly related to thrombo-embolic events. Evaluation of the a... Abstract
Cited 5 times since 2004 (0.2 per year) source: EuropePMC
Journal of clinical oncology : official journal of the American Society of Clinical Oncology, Volume 22, Issue 6, 1 1 2004, Pages 1153-1156 Case 2. Intracardiac metastasis from a Merkel cell carcinoma. Jongbloed MR, Kanen BL, Visser M, Niessen H, Flens MJ, Loffeld RJ
Cited 76 times since 2004 (3.8 per year) source: EuropePMC
Journal of cardiovascular electrophysiology, Volume 15, Issue 3, 1 1 2004, Pages 349-355 Embryonic conduction tissue: a spatial correlation with adult arrhythmogenic areas. Jongbloed MR, Schalij MJ, Poelmann RE, Blom NA, Fekkes ML, Wang Z, Fishman GI, Gittenberger-De Groot AC
Introduction: The occurrence of arrhythmias in adult patients may arise preferentially in anatomic regions derived from the specialized cardiac conduction system. To examine this hypothesis, we performed a detailed analysis of the developing cardiac conduction system using the recently described CCS-lacZ transgenic mouse strain. Methods and results: Transgenic embryos (E9.5-15.5) were stained for beta-galactosidase activity and co-stained with the myocardial marker HHF35. Results were reconstruc... Abstract
Cited 21 times since 2004 (1 per year) source: EuropePMC
European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology, Volume 5, Issue 1, 1 1 2004, Pages 34-40 Radiofrequency catheter ablation of ventricular tachycardia guided by intracardiac echocardiography. Jongbloed MR, Bax JJ, van der Burg AE, Van der Wall EE, Schalij MJ
Aims: Ventricular tachycardia (VT) frequently has an anatomical substrate. Identification of areas prone to arrhythmogenicity facilitates radiofrequency catheter ablation (RFCA). Furthermore, direct monitoring of complications potentially increases safety of RFCA. The aim of this study was to evaluate the feasibility of guiding RFCA of VT with intracardiac echocardiography (ICE), in order to improve outcome and procedural safety. Methods and results: Eleven patients (age 59 +/- 15 years) with dr... 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 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