Publications
Below you can find a list of our published research.
Below you can find a list of our published research.
226 results
Cited 7 times since 2018 (1.2 per year) source: EuropePMC
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery, Volume 53, Issue 6, 1 1 2018, Pages 1272-1278 Twenty-year experience with stentless biological aortic valve and root replacement: informing patients of risks and benefits. Schneider AW, Putter H, Hazekamp MG, Holman ER, Bruggemans EF, Versteegh MIM, Schalij MJ, Varkevisser RRB, Klautz RJM, Braun J
Objectives: The aim of this study was to provide predictive data on the performance of the Freestyle stentless bioprosthesis that can be used to support and improve the shared decision-making process of prosthetic valve choice for aortic valve replacement. Methods: Between 1993 and 2014, 604 patients received the Freestyle stentless bioprosthesis (143 subcoronary, 58 root inclusion and 403 full-root replacement). Perioperative data were collected retrospectively, and follow-up data were collecte... Abstract
Cited 9 times since 2018 (1.5 per year) source: EuropePMC
Journal of cardiology, Volume 72, Issue 6, 31 5 2018, Pages 473-479 Long-term results of mitral valve repair for severe mitral regurgitation in asymptomatic patients. Tomšič A, Hiemstra YL, van Hout FMA, van Brakel TJ, Versteegh MIM, Marsan NA, Klautz RJM, Palmen M
Background: In asymptomatic patients with severe degenerative mitral valve regurgitation (MR), early surgery is often performed in experienced centers. The patient- and valve-related results and the quality of life after surgery in these patients remain insufficiently explored. Methods: Between 1/2000 and 12/2015, 83 asymptomatic patients (mean age 56.6±12.6 years, 21 female) without any complications related to long-lasting MR underwent early surgery. Follow-up clinical and echocardiographic da... Abstract
Cited 2 times since 2018 (0.3 per year) source: EuropePMC
Interactive cardiovascular and thoracic surgery, Volume 26, Issue 5, 1 1 2018, Pages 783-789 Early and long-term outcomes of mitral valve repair for Barlow's disease: a single-centre 16-year experience. Tomšic A, Hiemstra YL, van der Pas SL, Putter H, Versteegh MIM, van Brakel TJ, Ajmone Marsan N, Klautz RJM, Palmen M
Objectives: Following mitral valve repair for Barlow's disease, recurrent mitral regurgitation (MR) is believed to occur frequently and is mainly attributed to disease progression. Methods: Between January 2000 and December 2015, 180 patients (40% women, mean age 58.7 ± 13.5 years) with Barlow's disease underwent mitral valve repair. To provide a longitudinal assessment of mitral valve repair durability, a multistate model for interval-censored observations (4 states: 1, Grade 0/1+ MR;... Abstract
Cited 1 times since 2018 (0.2 per year) source: EuropePMC
Interactive cardiovascular and thoracic surgery, Volume 26, Issue 4, 1 1 2018, Pages 566-572 Outcome reporting for surgical treatment of degenerative mitral valve disease: a systematic review and critical appraisal. Tomšic A, Arabkhani B, Schoones JW, van Brakel TJ, Takkenberg JJM, Palmen M, Klautz RJM
Objectives: Standardized outcome reporting is of critical importance for performance monitoring, improvement of existing techniques and introduction of novel technologies. Whether outcome reporting for surgical treatment of degenerative mitral valve disease complies with the guidelines has not been assessed to date. Methods: A systematic review of PubMed, EMBASE, Web of Science and the Cochrane Library was conducted for articles published between 1 January 2009 and 7 March 2016. Inclusion criter... Abstract
Cited 4 times since 2018 (0.7 per year) source: EuropePMC
Interactive cardiovascular and thoracic surgery, Volume 26, Issue 4, 1 1 2018, Pages 610-616 Early and late results of surgical treatment for isolated active native mitral valve infective endocarditis. Tomšic A, Versteegh MIM, Ajmone Marsan N, van Brakel TJ, Klautz RJM, Palmen M
Objectives: Native mitral valve infective endocarditis (IE) is a complicated disease with high mortality and morbidity rates. Mitral valve repair (MVRep) is feasible when limited valve destruction is present. However, recurrent valve dysfunction and reintervention are common. Methods: Between January 2000 and March 2016, 83 patients underwent surgery for isolated active native mitral valve IE. We applied an early surgery, MVRep-oriented approach with progressive utilization of patch techniques t... Abstract
Cited 2 times since 2018 (0.3 per year) source: EuropePMC
Interactive cardiovascular and thoracic surgery, Volume 26, Issue 4, 1 1 2018, Pages 559-565 Mitral valve repair in Barlow's disease with bileaflet prolapse: the effect of annular stabilization on functional mitral valve leaflet prolapse. Tomšic A, Hiemstra YL, Bissessar DD, van Brakel TJ, Versteegh MIM, Ajmone Marsan N, Klautz RJM, Palmen M
Objectives: Barlow's disease is the most severe form of degenerative mitral valve disease, commonly characterized by bileaflet prolapse. Abnormal mitral annular dynamics is typically present and results in functional prolapse of the mitral leaflets that may be addressed with annular stabilization alone. Methods: Between January 2001 and December 2015, 128 patients with Barlow's disease and bileaflet prolapse underwent valve repair. This included anterior mitral valve leaflet (AMVL) rep... Abstract
American journal of translational research, Volume 10, Issue 3, 15 3 2018, Pages 816-826 No indications for platelet activation in acute clinical myocardial or renal ischemia/reperfusion injury. Kortekaas KA, de Vries DK, Roest M, Reinders ME, van der Veer EP, Klautz RJ, de Groot PG, Schaapherder AF, Lindeman JH
The pathophysiology of ischemia/reperfusion (I/R) injury is complex and poorly understood. Animal studies imply platelet activation as an initiator of the inflammatory response upon reperfusion. However, it remains unclear whether and how these results translate to clinical I/R. This study evaluates putative platelet activation in the context of two forms of clinical I/R (heart valve surgery with aortic-cross clamping, n = 39 and kidney transplantation, n = 34). The technique of sequential selec... Abstract
Cited 13 times since 2018 (2.1 per year) source: EuropePMC
European heart journal. Cardiovascular Imaging, Volume 19, Issue 2, 1 1 2018, Pages 176-184 Three-dimensional assessment of mitral valve annulus dynamics and impact on quantification of mitral regurgitation. van Wijngaarden SE, Kamperidis V, Regeer MV, Palmen M, Schalij MJ, Klautz RJ, Bax JJ, Ajmone Marsan N, Delgado V
Aims: To assess mitral annulus dynamics in primary and secondary mitral regurgitation (MR) with 3-dimensional transesophageal echocardiography (3D TEE) and the impact on MR quantification. Methods and results: One hundred and twenty-three patients with moderate and severe MR (63 ± 11 years, 78 males) and 29 controls (59 ± 15 years, 19 males) were evaluated. Functional MR (FMR) was present in 31 patients, fibroelastic deficiency (FED) in 52 and Barlow's disease (BD) in 40. Annular geometry w... Abstract
Cited 1 times since 2018 (0.2 per year) source: EuropePMC
The Journal of thoracic and cardiovascular surgery, Volume 155, Issue 2, 1 1 2018, Pages 600-601 Respect versus resect: Two different repair techniques or two different tools in the toolbox? Tomšič A, Klautz RJM, Palmen M
Interactive cardiovascular and thoracic surgery, Volume 26, Issue 2, 1 1 2018, Pages 256 eComment. Posterior mitral valve leaflet prolapse: one term, several different meanings. Tomsic A, Klautz RJM, Palmen M
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 (4.1 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