The University of California at Los Angeles heart transplantation experience.
Division of Cardiology, Department of Medicine The David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.Clinical transplants 01/2005;
During the past 20 years, the number of older patients undergoing heart transplantation has steadily increased as a result of expanding indications for this procedure. At UCLA, 1,046 adult heart transplant procedures were performed from 1984-2004. Actuarial one-, 3-, 5-year survival rates for all recipients are 83%, 76%, and 72%, respectively. Our patients were grouped into 2 eras: those transplanted between 1984-1993 and those between 1994-2004. The current era, incorporating those patients transplanted between 1994-2004, may be defined by the introduction of pravastatin in 1994, which we have reported to benefit heart transplant patients. There were 403 adult heart transplant recipients in the pre-1994 era and 643 adult recipients in the current era. Additionally, patients were then grouped by age into those aged 18-61 years and those older than age 61 years. In the current era, there was less rejection and cardiac allograft vasculopathy (CAV) with improved survival and comparable survival in younger versus older patients. Although cellular rejection has decreased over the 1990's decade, we have reported that the incidence of noncellular or humoral rejection in our cardiac transplant recipients has remained unchanged despite improved immunosuppressive therapies. Thus, there appears to be a need for newer immunosuppressive agents to treat humoral rejection effectively. CAV is one of the major factors limiting long-term survival in heart transplant patients. Early CAV can be detected by intravascular ultrasound (IVUS), which is a new technology that detects intimal thickening in the donor coronary arteries. We demonstrated in the multicenter IVUS validation study that the progression of IVUS-defined intimal thickening > or = 0.5 mm in the first year after heart transplantation appears to be a reliable surrogate marker for subsequent mortality, nonfatal major adverse cardiac events, and the development of angiographic CAV through 5 years follow-up. The limitation on the number of transplants performed has been the number of donor organs available. We began the alternate list at our program in 1992, which is designed to match those patients excluded for regular heart transplant listing (mostly older patients) to marginal donor hearts which are unused. We have demonstrated that the alternate list patients who have undergone heart transplant have satisfactory outcomes. This has allowed expansion of the donor pool and offered heart transplantation to those patients who would not routinely have an opportunity for this life extending procedure.
- [Show abstract] [Hide abstract]
ABSTRACT: We compared the interobserver reproducibility of the 1990 and 2004 International Society for Heart and Lung Transplantation (ISHLT) grading system for cardiac rejection. The 2004 ISHLT grading system for cardiac allograft rejection did not improve reproducibility partly due to pathologists' disagreement in diagnosing Grades 1B/1R and 3A/2R rejection. To achieve better reproducibility, better criteria for defining 1B/1R vs. 3A/2R rejection and markers of myocyte injury are needed.Cardiovascular pathology: the official journal of the Society for Cardiovascular Pathology 08/2008; 18(4):198-204. DOI:10.1016/j.carpath.2008.05.003 · 2.00 Impact Factor
- [Show abstract] [Hide abstract]
ABSTRACT: The purpose of this study is to determine the clinical outcomes associated with alternate listing transplantation, which utilizes "marginal" donor organs by transplanting them into high-risk recipients who fail to meet the standard criteria for transplantation. The United Network for Organ Sharing provided de-identified patient-level data. Analysis focused on patients undergoing heart transplantation between January 1, 1999, and December 31, 2005 (n = 13,024). High-risk criteria included age more than 65 years old, retransplantation, hepatitis C-positive, human immunodeficiency virus-positive, creatinine clearance less than 30 mL/min, diabetes mellitus with peripheral vascular disease, and diabetes with creatinine clearance less than 40 mL/min. Marginal donor criteria included age more than 55 years, diabetes mellitus, hepatitis C-positive, human immunodeficiency virus-positive, ejection fraction less than 45%, and donor:recipient weight less than 0.7. Survival in the standard transplant group, defined as non-high-risk patients who received nonmarginal organs, was better than in all other groups (p < 0.001). Alternate listing transplantation patients had the worst survival (p < 0.001). The 5-year survival for the alternate listing transplantation group was 51.4%, compared with 75.1% in the standard transplant group; the standard transplant patients, with the lowest incidence of in-hospital infection (21.1%) and dialysis (7.1%), also had the best transplant hospitalization outcomes (p < 0.001). In contrast, alternate listing transplantation patients had the highest incidence of in-hospital infection (35.4%; p < 0.001). Length of stay during transplant hospitalization was also shortest in the standard transplant group (18.8 days; p < 0.001). Alternate listing transplantation is associated with greater morbidity and resource utilization compared with standard transplantation. However, this strategy offers a median survival of 5.2 years to patients who would otherwise be expected to live 1 year, and therefore, may be reasonably applied to expand the benefits of transplantation. Further studies examining the costs and quality of life related to this approach are needed.The Annals of thoracic surgery 05/2009; 87(4):1066-70; discussion 1071. DOI:10.1016/j.athoracsur.2008.12.020 · 3.85 Impact Factor
- [Show abstract] [Hide abstract]
ABSTRACT: The progress of immunosuppressive therapy has made heart transplantation the standard therapy for end-stage heart failure. However, humoral rejection of the cardiac allograft is still a challenging problem associated with high incidence of graft loss and patient mortality. The present patient developed profound cardiogenic shock requiring extracorporeal life support on the 8th day after heart transplantation. Endomyocardial biopsy revealed no cellular rejection, and complement component C4d was positively stained on the capillary endothelium. The patient was successfully treated with repeated plasmapheresis and administration of anti-CD20 monoclonal antibody, rituximab, as well as with steroid pulse and increased standard immunosuppressive medication.Circulation Journal 05/2009; 73(5):970-3. DOI:10.1253/circj.CJ-08-0292 · 3.94 Impact Factor
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.