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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Transplant international 9 (1996), S. 243-247 
    ISSN: 1432-2277
    Schlagwort(e): Heart transplantation, endomyocardial biopsy ; Biopsy, endomyocardial ; Endomyocardial biopsy, heart transplantation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Since 1989, the immunosuppressive regimen used in all heart transplant (HTx) patients at our center has consisted of a combination of cyclosporin, azathioprine, and prednisone. No prophylactic cytolytic agents have been given. One hundred consecutive patients were followed for periods of 4–56 months (mean 27 months). The incidence of rejection was so low in the initial 18 patients that we felt confident about reducing the number of routine endomyocardial biopsies (EMBs) that were performed. The mean number of EMBs in this subgroup was 10 (median 11). In the next 20 patients, EMB was performed routinely on only three occasions during the 1st post-transplant year (at 2, 4, and 8 weeks). In the subsequent 62 patients, EMB was performed on post-transplant days 10, 20, 30, and 60. Further EMBs were performed after acute rejection episodes had been treated. No noninvasive methods of diagnosing rejection were employed. In 82 consecutive patients, therefore, the mean number of EMBs within the 1st year was five per patient (median four), with 58% undergoing fewer than five EMBs and 25% requiring more than five EMBs. In the entire group of 100 patients, the mean number of EMBs was 5.9. The incidence of acute rejection requiring increased therapy was 24%. Only 7% required i.v. steroids, two of whom (2%) also required ALG and/or OKT3, with 17% requiring increased oral immunosuppression alone. Actuarial survival was 98% at 30 days, 94% at 1 year, and 92% at 2 years. It is possible that we may have missed acute rejection episodes that resolved spontaneously. However, the excellent mediumterm results would suggest that any such rejection episode did not progress to become hemodynamically significant. It may be, therefore, that when an effective immunosuppressive regimen is utilized, the number of EMBs performed at many centers is excessive.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Transplant international 10 (1996), S. 24-32 
    ISSN: 1432-2277
    Schlagwort(e): Cardiac donors ; Ultrastructural changes heart, brain death, Triiodothyronine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Electromicroscopic examinations were carried out on 30 myocardial biopsies taken from 22 human donor hearts immediately after excision (prestorage) or immediately before transplantation (post-storage). All electron micrographs were independently examined by two morphologists. Eleven structures were examined in each micrograph, and each structure was scored according to the degree of injury. A good interobserver correlation was obtained in 84 % of the structures scored. In the prestorage left ventricular biopsies (n = 11), approximately 20 %–25 % showed moderate to severe ultrastructural injury. The ultrastructural injury observed in the poststorage left ventricular biopsies (n = 15) was no different from that in the prestorage group, particularly injury to the sarcomere and mitochondria. A similar degree and pattern of injury was seen in the right ventricle (n = 4). There was no evidence that an ischemic storage period of less than 6 h increased the degree of injury seen. However, there was a higher incidence of moderate to severe injury in those hearts excised from donors initially dependent on high inotropic support.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1569-8041
    Schlagwort(e): autologous peripheral blood progenitor-cell transplantation ; CD34+ cells ; high-dose chemotherapy ; Hodgkin's disease
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Background:The use of autologous peripheral blood progenitorcells (PBPC) expedites hematologic recovery and reduces the costs oftransplantation in comparison with autologous bone marrow; however, itsefficacy in patients with Hodgkin's disease has been questioned. We evaluatedthe results of autologous PBPC transplantation in a population of unselectedand uniformly treated patients with primary refractory or relapsed Hodgkin'sdisease. Patients and methods:Forty consecutive adult patients withprimary refractory (n = 7) or relapsed (n = 33) Hodgkin'sdisease received high-dose BEAM (BCNU, etoposide, ara-C, and melphalan)followed by autologous PBPC infusion. Twenty-four patients (60%)received high-dose BEAM as outpatients. Consolidative radiation therapy wasadministered to 14 patients (35%). Results:Thirty-seven patients (92%) achieved a posttransplant complete response. The 3-year progression-free survival (PFS) was69%, and the 3-year overall survival (OS) was 77%, with a medianfollow-up of surviving patients of 28 months. Severe non-hematologictoxicities included gastrointestinal side effects (diarrhea 17%,mucositis 25%), and interstitial pneumonitis (15%). One patientdied of acute transplant-related complications (mortality rate 2.5%).Strong predictors of poor PFS were chemoresistant versuschemosensitive/untested disease (actuarial PFS 89% versus22%, P = 0.0000) and stage IIB–IV versusI–IIA at relapse/progression (86% versus46%, P = 0.005). All five patients with elevated lactatedehydrogenase at the time of transplantation died of their disease. There wasa trend toward worse PFS for patients receiving a higher number of CD34+ cells(≥11 × 106 per kg). Conclusions:High-dose BEAM chemotherapy with autologous PBPCtransplantation is associated with low mortality and results in satisfactoryPFS for patients with primary refractory or relapsed Hodgkin's disease. Thesubset of patients with progressive disease at the time of transplantationperforms poorly and may benefit from alternative strategies.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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