Publications by authors named "Herbert O Vetter"

Background: Despite the technical advancements of the transcatheter aortic valve implantation (TAVI) procedure, valve embolisation into the left ventricle remains a challenging situation requiring expedited management through the Heart Team.

Investigation: The advantages and pitfalls of an interventional transfemoral approach, a transapical extraction of the dislocated prosthesis or the conversion to open heart surgery have to be balanced depending on the overall situation and the specific characteristics of the patient.

Diagnosis: A transfemoral approach would be the first choice for most TAVI implanters.

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Aims: Transcatheter mitral valve repair has become a promising alternative treatment option for severe symptomatic mitral regurgitation in patients at high risk for open heart surgery with heart-lung bypass.

Methods And Results: We describe the first successful procedure of mitral clipping through a right lateral mini-thoracotomy via the right upper pulmonary vein in a patient with an agenesis of the inferior vena cava. The set-up of the MitraClip system on a separate table located at 70¡ on the right side of the patient and the fixation of the steerable sheath at the entry into the thorax with constant posterior pressure enabled clip implantation using the usual manoeuvres with marked reduction of the mitral insufficiency.

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Background: Cardiopulmonary bypass often causes a stress hormonal response with subsequent changes in hemodynamics and organ perfusion. Leptin, an adipocyte-derived factor, has been proposed to play a role in systemic inflammation. We examined perioperative release of leptin and cortisol in patients undergoing open heart surgery with or without cardiopulmonary bypass.

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Clinical use of heart assist devices is often associated with thromboembolic complications. We hypothesized that platelets may be activated in patients receiving assist devices and examined expression of the platelet activation markers CD62, CD63, and thrombospondin using flow cytometry in eight patients with Novacor left ventricular assist system (LVAS) or Berlin Heart. Patients with end-stage heart failure had elevated expression of platelet activation markers before insertion of the assist device.

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Background: The object was to evaluate the long-term effectiveness of strategies for managing the aortic root and distal aorta in type A dissections.

Methods: From 1990 to 1999, 50 patients (32 men (64.07%); 18 women, (36.

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Background: The Edwards MIRA mechanical heart valve is designed to optimize hemodynamics, reduce thrombogenicity, and avoid mechanical failure with a special hinge mechanism. The purpose of the study was to investigate the clinical performance and postoperative hemodynamic results of the first European patients receiving Edwards MIRA mechanical heart valves.

Methods: From March 1998 to March 1999 a total of 54 Edwards MIRA valves model numbers 3600 (aortic, n = 44) and 9600 (mitral, n = 10) were implanted in 52 (36 male, 16 female; mean age 61 +/- 10.

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