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In this tutorial we present recently developed nonlinear methods of cardiovascular physics and show their potentials to clinically relevant problems in cardiology. The first part describes methods of cardiovascular physics, especially data analysis and modeling of noninvasively measured biosignals, with the aim to improve clinical diagnostics and to improve(More)
OBJECTIVE Sternal dehiscence after median sternotomy can be a challenging problem in case of multiple fractures or infection. The use of titanium plates is a promising approach for sternal reconstruction. METHODS Titanium plate fixation was used in 15 patients (67+/-5.9 years, 171+/-8.2 cm, 93.6+/-14.9 kg, body mass index 32+/-5 kg/m(2)) with unstable(More)
OBJECTIVE Transcatheter aortic valve implantation has been performed by several groups, most of them either specializing on the transapical (surgeons) or the percutaneous femoral transarterial approach (cardiologists). We achieved both transapical and percutaneous transcatheter valve implantation by a surgical team in a hybrid suite. METHODS Since June(More)
In this contribution we test the hypothesis that nonlinear additive autoregressive model-based data analysis improves the diagnostic ability based on short-term heart rate variability. For this purpose, a nonlinear regression approach, namely, the maximal correlation method is applied to the data of 37 patients with dilated cardiomyopathy as well as of 37(More)
BACKGROUND Magnetic Resonance Imaging (MRI) and transthoracic echocardiography have been shown to be noninvasive highly sensitive diagnostic tools to identify changes in LV mass and volume. We therefore investigated the effects of mitral valve repair (MVR) on LV function parameters including ejection fraction (EF; %), indices of LV mass (LVMI; g/m2) and(More)
OBJECTIVES We compared the annulus diameters measured by transthoracic echocardiography (TTE), transesophageal echocardiography (TEE), and dual-source computed tomography (DSCT) before transcatheter aortic valve implantation (TAVI). BACKGROUND In TAVI correct evaluation of the aortic annulus is mandatory to choose the correct prosthesis type and size and(More)
AIM Transcatheter aortic valve implantation has become an alternative to surgery in higher risk patients with symptomatic aortic stenosis. The aim of the ADVANCE study was to evaluate outcomes following implantation of a self-expanding transcatheter aortic valve system in a fully monitored, multi-centre 'real-world' patient population in highly experienced(More)
Optimal port placement and intra-operative navigation in robotically assisted minimally invasive cardiovascular surgery are essential for the improvement and success of a teleoperator based heart operation. A new system incorporating both port placement planning and intra-operative navigation was established. Offline the optimal port placement is planned on(More)
OBJECTIVE Recently, suspicion had been expressed that survival might be impaired after antegrade transapical as opposed to retrograde transfemoral valve implantation in high-risk patients with aortic stenosis. We analyzed survival in patients undergoing transcatheter aortic valve implantation with special emphasis on the access site for implantation. (More)