Publications
Below you can find a list of our published research.
Below you can find a list of our published research.
196 results
Cited 4 times since 2017 (0.6 per year) source: EuropePMC
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Volume 52, Issue 6, 1 1 2017, Pages 1161-1167 Right ventricular dysfunction after surgical left ventricular restoration: prevalence, risk factors and clinical implications. Couperus LE, Delgado V, van Vessem ME, Tops LF, Palmen M, Braun J, Verwey HF, Klautz RJM, Schalij MJ, Beeres SLMA
Objectives: Surgical left ventricular (LV) restoration (SVR) induces changes in LV systolic and diastolic function that may affect postoperative right ventricular (RV) function. This study aimed to evaluate the long-term effect of SVR on RV function, with specific focus on determinants and prognostic implications of RV dysfunction. Methods: Eighty-six patients (age 60 ± 10 years, 73% male) with clinical and echocardiographic follow-up 2 years after SVR were included. RV dysfunction was defined a... Abstract
Multimedia manual of cardiothoracic surgery : MMCTS, Volume 2017, 25 4 2017 The Ross reimplantation technique. Schneider A, Klautz RJM, Hazekamp M
Pulmonary autograft replacement of a diseased aortic valve (the Ross procedure) is effective in children, where growth is essential, and in young patients for whom a biological solution is preferred. Long-term outcomes are generally good. However eventual autograft dilatation may necessitate reoperation. In order to diminish the risk of autograft dilatation, several 'wrapping' techniques have been developed. Here, we present our technique of choice: the reimplantation of the pulmonary... Abstract
Cited 8 times since 2017 (1.2 per year) source: EuropePMC
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Volume 51, Issue 6, 1 1 2017, Pages 1100-1107 Extensive infective endocarditis of the aortic root and the aortic-mitral continuity: a mitral valve sparing approach†. Tomšic A, Schneider AW, Palmen M, van Brakel TJ, Versteegh MIM, Klautz RJM
Objectives: Severe cases of infective endocarditis (IE) of the aortic valve can cause aortic root destruction and affect the surrounding structures, including the aortic-mitral continuity, the anterior mitral valve leaflet and the roof of the left atrium. Reconstruction after resection of all infected tissue remains challenging. We describe our surgical approach and the mid-term results. Methods: Between January 2004 and December 2015, 35 patients underwent surgery for extensive IE of the aortic... Abstract
Cited 4 times since 2017 (0.6 per year) source: EuropePMC
ASAIO journal (American Society for Artificial Internal Organs : 1992), Volume 63, Issue 3, 1 1 2017, Pages 266-272 Pump Speed Optimization in Stable Patients with a Left Ventricular Assist Device. Couperus LE, Delgado V, Khidir MJH, Vester MPM, Palmen M, Fiocco M, Holman ER, Tops LF, Klautz RJM, Verwey HF, Schalij MJ, Beeres SLMA
Optimal left ventricular assist device (LVAD) functioning and preservation of right ventricular (RV) function are major survival determinants in destination therapy (DT)-LVAD recipients. Currently, the indication for routine pump speed optimization in stable patients and its effect on RV function at follow-up remain underexplored. Hemodynamically stable patients (N = 17, age 61 [interquartile range {IQR} 51-66] years; 13 [77%] male) underwent a routine speed ramp test. Echocardiographic images w... Abstract
Cited 5 times since 2017 (0.7 per year) source: EuropePMC
Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, Volume 19, Issue 4, 1 1 2017, Pages 560-567 Limited left atrial surgical ablation effectively treats atrial fibrillation but decreases left atrial function. Compier MG, Tops LF, Braun J, Zeppenfeld K, Klautz RJ, Schalij MJ, Trines SA
Aims: Limited left atrial (LA) surgical ablation with bipolar radiofrequency is considered to be an effective procedure for treatment of atrial fibrillation (AF). We studied whether limited LA surgical ablation concomitant to cardiac surgery is able to maintain LA function. Methods and results: Thirty-six consecutive patients (age 66 ± 12 years, 53% male, 78% persistent AF) scheduled for valve surgery and/or coronary revascularization and concomitant LA surgical ablation were included. Epicardia... Abstract
Cited 13 times since 2017 (1.8 per year) source: EuropePMC
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Volume 51, Issue 3, 1 1 2017, Pages 532-538 Incidence and predictors of vasoplegia after heart failure surgery. van Vessem ME, Palmen M, Couperus LE, Mertens B, Berendsen RR, Tops LF, Verwey HF, de Jonge E, Klautz RJ, Schalij MJ, Beeres SL
Objectives: Vasoplegia has been described as a complication after cardiac surgery, particularly in patients with a poor left ventricular ejection fraction. The aim of this study was to assess the incidence, survival and predictors of vasoplegia in patients undergoing heart failure surgery and to propose a risk model. Methods: A retrospective study including heart failure patients who underwent surgical left ventricular restoration, CorCap implantation or left ventricular assist device implantati... Abstract
Cited 7 times since 2017 (1 per year) source: EuropePMC
The Annals of thoracic surgery, Volume 103, Issue 6, 24 4 2017, Pages 1976-1983 Long-Term Follow-Up After the Ross Procedure: A Single Center 22-Year Experience. Schneider AW, Putter H, Klautz RJM, Bruggemans EF, Holman ER, Bökenkamp R, Hazekamp MG
Background: The aim of this study was to analyze long-term outcomes after the Ross procedure, focusing on autograft function and risk of reoperation in time. Methods: Between February 1994 and February 2016, 154 patients underwent the Ross (n = 105) and Ross-Konno (n = 49) procedure at our institution and were included in this study. Data were collected retrospectively from patients' medical records or through telephone contact. Competing risks analyses were performed to determine incidence... Abstract
Cited 29 times since 2017 (4 per year) source: EuropePMC
Circulation. Cardiovascular quality and outcomes, Volume 10, Issue 2, 22 4 2017, Pages e003178 Does the Use of a Decision Aid Improve Decision Making in Prosthetic Heart Valve Selection? A Multicenter Randomized Trial. Korteland NM, Ahmed Y, Koolbergen DR, Brouwer M, de Heer F, Kluin J, Bruggemans EF, Klautz RJ, Stiggelbout AM, Bucx JJ, Roos-Hesselink JW, Polak P, Markou T, van den Broek I, Ligthart R, Bogers AJ, Takkenberg JJ
Background: A Dutch online patient decision aid to support prosthetic heart valve selection was recently developed. A multicenter randomized controlled trial was conducted to assess whether use of the patient decision aid results in optimization of shared decision making in prosthetic heart valve selection. Methods and results: In a 5-center randomized controlled trial, patients were allocated to receive either standard preoperative care (control group) or additional access to the patient decisi... Abstract
Cited 7 times since 2017 (1 per year) source: EuropePMC
EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology, Volume 12, Issue 13, 1 1 2017, Pages 1660-1666 Left bundle branch block after sutureless, transcatheter, and stented biological aortic valve replacement for aortic stenosis. Regeer MV, Merkestein LR, de Weger A, Kamperidis V, van der Kley F, van Rosendael PJ, Marsan NA, Klautz RJ, Schalij MJ, Bax JJ, Delgado V
Aims: Conventional aortic valve replacement (AVR), sutureless AVR (su-AVR) and transcatheter aortic valve implantation (TAVI) for severe aortic stenosis (AS) are associated with conduction abnormalities. The aim of the present study was to assess the incidence of left bundle branch block (LBBB) after su-AVR and TAVI, in comparison to conventional AVR. Methods and results: A total of 501 patients (mean age 74±8 years, 53% male) without preoperative cardiac conduction disturbances who underwent AV... Abstract
Cited 3 times since 2016 (0.4 per year) source: EuropePMC
Multimedia manual of cardiothoracic surgery : MMCTS, Volume 2017, 6 1 2016 Optimal surgical mitral valve repair in Barlow's disease: the concept of functional prolapse. Klautz RJ, Tomšič A, Palmen M, van Brakel TJ, Perier P
Barlow's disease presents the most severe form of degenerative mitral valve disease as it normally affects various valvular structures and segments. We discuss the technical aspects of mitral valve repair in this setting. Furthermore, the concept of "functional prolapse" of the mitral valve is discussed as well as recommendations on when to proceed with surgical correction of anterior leaflet prolapse. Abstract
Cited 9 times since 2016 (1.2 per year) source: Scopus
Journal of cardiovascular computed tomography, Volume 11, Issue 1, 25 4 2016, Pages 1-7 Prognostic implications of descending thoracic aorta dilation after surgery for aortic dissection. Regeer MV, Martina B, Versteegh MI, de Weger A, Klautz RJ, Schalij MJ, Bax JJ, Marsan NA, Delgado V
Background: The present study assessed whether descending thoracic aorta growth can be measured reliably by volumetric analysis using multi-detector row computed tomography (MDCT) and whether growth influences the need for future aortic interventions in survivors of acute type A aortic dissection. Methods: A total of 51 patients (58 ± 11 years, 61% male) who underwent surgery for type A aortic dissection with ≥2 postoperative MDCT scans ≥5 months apart were included. Volumetric analysis of the d... Abstract
Cited 9 times since 2016 (1.2 per year) source: EuropePMC
The Journal of thoracic and cardiovascular surgery, Volume 153, Issue 4, 23 4 2016, Pages 845-852 Right ventricular dysfunction affects survival after surgical left ventricular restoration. Couperus LE, Delgado V, Palmen M, van Vessem ME, Braun J, Fiocco M, Tops LF, Verwey HF, Klautz RJ, Schalij MJ, Beeres SL
Objective: Several clinical and left ventricular parameters have been associated with prognosis after surgical left ventricular restoration in patients with ischemic heart failure. The aim of this study was to determine the prognostic value of right ventricular function. Methods: A total of 139 patients with ischemic heart failure (62 ± 10 years; 79% were male; left ventricular ejection fraction 27% ± 7%) underwent surgical left ventricular restoration. Biventricular function was assessed with e... Abstract
Cited 1 times since 2016 (0.1 per year) source: EuropePMC
American journal of respiratory and critical care medicine, Volume 194, Issue 6, 1 1 2016, Pages 767-769 Single-Nucleotide Polymorphisms in the CALCA Gene Are Associated with Variation of Procalcitonin Concentration in Patients Undergoing Cardiac Surgery. Schoe A, de Jonge E, Klautz RJ, van Dissel JT, van de Vosse E
Cited 4 times since 2016 (0.5 per year) source: EuropePMC
Interactive cardiovascular and thoracic surgery, Volume 23, Issue 6, 1 1 2016, Pages 979-981 Left ventricular assist device implantation in patients after left ventricular reconstruction. Palmen M, Braun J, Beeres SL, Klautz RJ
Left ventricular assist device (LVAD) implantation can be challenging in patients with a prior surgical ventricular restoration (SVR). In this case series of heart failure patients with a history of SVR, we describe the surgical technique and outcome of a customized approach for inflow cannula orientation. Seven patients with a history of SVR with end-stage chronic heart failure were accepted for long-term LVAD support. In all patients, the Dacron patch was removed through left ventriculotomy an... Abstract
Cited 16 times since 2016 (2.1 per year) source: EuropePMC
The Annals of thoracic surgery, Volume 102, Issue 6, 22 4 2016, Pages 1981-1987 Effect of Aortic Valve Replacement on Aortic Root Dilatation Rate in Patients With Bicuspid and Tricuspid Aortic Valves. Regeer MV, Versteegh MI, Klautz RJ, Schalij MJ, Bax JJ, Marsan NA, Delgado V
Background: It remains unclear whether aortic valve replacement (AVR) has an effect on the aortic root dilatation rate in patients with bicuspid aortic valve (BAV) and tricuspid aortic valve (TAV). The present study evaluated the pre- and postoperative annual aortic root dilatation rates in BAV and TAV. Methods: A total of 93 patients (67 ± 11 years; 71% men) who underwent AVR between 2003 and 2013 and had at least 2 pre- and postoperative echocardiographic studies 1 year or more apart were incl... Abstract
Cited 9 times since 2016 (1.1 per year) source: EuropePMC
Echocardiography (Mount Kisco, N.Y.), Volume 33, Issue 10, 25 4 2016, Pages 1458-1464 Left ventricular reverse remodeling after aortic valve surgery for acute versus chronic aortic regurgitation. Regeer MV, Versteegh MI, Ajmone Marsan N, Schalij MJ, Klautz RJ, Bax JJ, Delgado V
Aims: Extent of left ventricular (LV) reverse remodeling after aortic valve repair or replacement (AVR) may differ between patients operated for acute aortic regurgitation (AR) and chronic AR. The aim of this study was to compare changes in LV volumes and function between patients with acute and chronic AR who underwent AVR. Methods and results: A total of 98 patients (54±15 years, 61% men) with acute (n=21) or chronic AR (n=77) were included in the present retrospective evaluation. LV volumes,... Abstract
The New England journal of medicine, Volume 374, Issue 20, 1 1 2016, Pages 1992 Surgery for Severe Ischemic Mitral Regurgitation. Braun J, Petrus AH, Klautz RJ
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Volume 50, Issue 1, 9 2 2016, Pages 190 Reply to Mannacio et al. Gielen CL, Bruggemans EF, Brand A, Klautz RJ
The American journal of cardiology, Volume 117, Issue 7, 2 1 2016, Pages 1167-1172 Comparison of Left Ventricular Volume and Ejection Fraction and Frequency and Extent of Aortic Regurgitation After Operative Repair of Type A Aortic Dissection Among Three Different Surgical Techniques. Regeer MV, Versteegh MI, Klautz RJ, Schalij MJ, Bax JJ, Marsan NA, Delgado V
Differences in recurrence rate of aortic regurgitation (AR) and extent of left ventricular (LV) remodeling across the different surgical options in patients operated for type A aortic dissection remain unknown. The present evaluation compared the AR recurrence rate and changes in LV volumes and systolic function in valve-sparing aorta replacement (VSAR), supracoronary ascending aorta replacement (SCAR), and aortic valve and aorta replacement (AVAR). A total of 97 patients (58 ± 12 years, 62% men... Abstract
Cited 13 times since 2016 (1.6 per year) source: EuropePMC
Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation, Volume 24, Issue 2, 1 1 2016, Pages 127-133 The extent of the raphe in bicuspid aortic valves is associated with aortic regurgitation and aortic root dilatation. Koenraadt WM, Grewal N, Gaidoukevitch OY, DeRuiter MC, Gittenberger-de Groot AC, Bartelings MM, Holman ER, Klautz RJ, Schalij MJ, Jongbloed MR
Background: The clinical course of bicuspid aortic valves (BAVs) is variable. Data on predictors of aortopathy and valvular dysfunction mainly focus on valve morphology. Aim: To determine whether the presence and extent of the raphe (fusion site of valve leaflets) is associated with the degree of aortopathy and valvular dysfunction in patients with isolated BAV and associated aortic coarctation (CoA). Methods: Valve morphology and aortic dimensions of 255 BAV patients were evaluated retrospectiv... Abstract