Robert Hammerschmidt

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AIMS The aim of the study was to evaluate the long-term results of allograft and prosthetic valve replacement in the treatment of infective aortic valve endocarditis with periannular abscess. METHODS Between March 1988 and March 1996, 65 patients underwent surgery for active aortic valve endocarditis and paravalvular abscess. The indications for surgery(More)
BACKGROUND Minimally invasive surgical procedures (MIS) may offer several advantages over conventional full sternotomy (FS) aortic valve replacement (AVR). A novel class of aortic valve prostheses has been developed for rapid-deployment AVR (RDAVR). We report a randomized, multicenter trial comparing the outcomes for MIS-RDAVR with those of conventional(More)
BACKGROUND We evaluated endovascular stent-grafting as a new technique in aortic surgery. METHODS One hundred ninety-six stent-grafts were implanted in the thoracic aorta in 172 patients. All procedures but one were performed in the operating room by a team of cardiothoracic surgeons; 112 operations (57%) were emergency procedures. Twenty-four procedures(More)
BACKGROUND Due to the risk of vascular complications, the indication for heart transplantation (HTx) in patients with Marfan syndrome and end-stage heart disease remains controversial. We analyzed the results of such patients who underwent HTx at our institution. METHODS Ten patients with Marfan syndrome (median age 36, range 19 to 56 years) underwent HTx(More)
BACKGROUND Examination of a large collective combined with individual case analyses may give new insights into mechanisms and prevention of spinal cord ischemia (SCI) after thoracic endovascular repair. METHODS In an 11-year period, stent-grafts were implanted in 406 patients for various aortic pathologic conditions. The mean age was 63 years (15-91(More)
BACKGROUND We analyzed the potential of endovascular stent grafts to treat late aortic pseudoaneurysms after coarctation repair. METHODS Eight patients (7 male; age 28 to 58, mean 43 years) presented with aortic pseudoaneurysms after primary repair performed at the age of 5 to 27 (mean 12) years; 2 patients had rupture with hemorrhagic shock. The mean(More)
OBJECTIVES Aortic valve replacement (AVR) via minimally invasive surgery (MIS) may provide clinical benefits in patients with aortic valve disease. A new class of bioprosthetic valves that enable rapid deployment AVR (RDAVR) may facilitate MIS. We here report the 1-year results of a randomized, multicentre trial comparing the outcomes for MIS-RDAVR with(More)
The recent association of alterations in T-lymphocyte subpopulations and impaired cellular immunity prompted an investigation of the effects of radiotherapy (RT) on serial levels of lymphocyte subsets in 30 patients with head and neck squamous carcinoma. Percentage and absolute levels of T3, T4, T6, T8, T10, T11, and Leu 7 cells were measured before,(More)
Since August 2009, 22 patients with aortic root aneurysm have been successfully operated on with our new aortic remodeling technique as follows: after placement of the Gelweave (Vascutek, Ltd., Inchinnan, UK) Valsalva vascular graft in the reverse manner to the Florida sleeve procedure, the aortic annulus was fixed with the collar of this prosthesis at the(More)
BACKGROUND Safe fixation of endovascular stent grafts in thoracic aortic disease often requires covering of the left subclavian artery (LSA) with the stent graft. It is controversial whether this occlusion can be done without additional risk of ischemic complications. METHODS In 102 patients treated with endovascular stent grafts, the LSA was covered. In(More)