Ulrich Römer

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BACKGROUND Since introduction in 1999, pulmonary valve replacement in pediatric patients with the Contegra conduit (Medtronic Inc, Minneapolis, MN) has gained widespread application with increasing enthusiasm. However, unexpected graft related adverse effects may occur. METHODS Between April 2001 and December 2002, 29 patients (20 male; mean age, 3.39 +/-(More)
BACKGROUND Patients with hypoplastic left heart syndrome (HLHS) and associated malformations undergo Norwood palliation or potentially a two-ventricle repair. METHODS Since 8/99, 8 patients with typical HLHS and two with DILV underwent Norwood/Fontan palliation (group I). Three other patients (group II) had two-ventricle repair. Anatomy was: aortic(More)
PURPOSE In congenital heart disease, the exact determination of the right ventricular function is of high importance for therapeutic and especially surgical planning. The aim of this study was to correlate the parameters of the right ventricular function in MRI and 3D echocardiography to determine the agreement of both modalities. MATERIALS AND METHODS In(More)
The purpose of this study was to establish normal left ventricular acoustic quantification (AQ) reference values for children from infancy to adolescence and to compare AQ-derived parameters with traditional M-mode and Doppler indices. We studied 150 normal, healthy children aged 2 days to 14 1/2 years. Left ventricular parasternal end diastolic area and(More)
BACKGROUND Pediatric heart transplantation is a surgical therapy for dilated cardiomyopathy and for complex congenital heart defects with low pulmonary artery resistance. However, it is still discussed as controversial because of uncertain long-term results. We report our experience with pediatric heart transplantation in a heterogeneous population. (More)
To report our experience with extracorporeal membrane oxygenation (ECMO) in a congenital heart surgery program. Since 12/1996, 24 patients (8 newborns, 9 infants, 3 children, 4 adolescents/ adults 17–23 years), mean age 4.0±7.4 years (2 days–23 years), body weight 2.7–87 kg had ECMO as circulatory support. Indication was failure to wean from cardiopulmonary(More)
We report a rare case of a successful cardiac transplantation in a patient suffering from cardiomyopathy and complex mitochondrial disease. The patient presented with severe heart failure and malignant ventricular arrhythmias requiring implantation of a defibrillator and advanced medical treatment. The patient was listed for urgent heart transplantation and(More)
INTRODUCTION Heart transplantation (HTx) has increasingly become a therapeutic option for end-stage heart failure of any origin in children. Short- and mid-term results are promising. However, long-term outcome has been a matter of concern because of acute or chronic rejection and side effects of immunosuppression. We performed a retrospective study of up(More)
We report about our initial experience for the in 2005 modified Helex (Gore) device for closure of atrial septal defects (ASD) and persistent foramen ovale (PFO). Major changes were made at the delivery system for simplifying the Helex implantation procedure. We treated 11 patients, 8 children and 3 adults, with ages between 3 and 62 years. In 10 patients(More)
This paper addresses the nonlinear elliptic curl–curl equation with uncertainties in the material law. It is frequently employed in the numerical evaluation of magnetostatic fields, where the uncertainty is ascribed to the so–called B–H curve. A truncated Karhunen–Loève approximation of the stochastic B–H curve is presented and analyzed with regard to(More)