title: Does total orthotopic heart transplantation offer improved hemodynamics during cellular rejection events?
abstract: BACKGROUND
  We hypothesized that total orthotopic heart transplantation (TOHT) improves hemodynamics during cellular rejection compared with biatrial transplantation (SOHT).
  
  
  METHODS
  We reviewed 1942 biopsies from 134 patients (pts) and right heart catheterization data obtained at endomyocardial biopsy. Biopsies that displayed cellular rejection grade 1B as classified according to International Society for Heart and Lung Transplantation (ISHLT) criteria were analyzed. Pts with pacemakers, atrial fibrillation, or beta-blocker therapy at the time of biopsy were excluded. Twenty-three pts after TOHT and 38 after SOHT were identified to match these criteria.
  
  
  RESULTS
  Demographic data and pretransplant hemodynamics were similar. TOHT pts had a higher mean cardiac index than SOHT recipients (3.3 +/- 0.8 vs 2.7 +/- 0.5 L/min/m(2); P =.002). Right atrial mean pressure was lower after TOHT (8 +/- 4 vs 11 +/- 4 mm Hg; P =.006). Pulmonary pressures, pulmonary vascular resistance, and heart rate were similar.
  
  
  CONCLUSIONS
  TOHT offers improved hemodynamics during cellular rejection grade 1B as evidenced by higher cardiac output and index with lower right atrial pressures. Future studies must examine the potential benefits of TOHT during more severe rejection events.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, University Essen, Essen, Germany. ivan.aleksic@uni-essen.de
authors.forename: I
authors.initials: I
authors.lastname: Aleksic
authors.forename: D
authors.initials: D
authors.lastname: Freimark
authors.forename: C
authors.initials: C
authors.lastname: Blanche
authors.forename: L S C
authors.initials: LS
authors.lastname: Czer
authors.forename: A
authors.initials: A
authors.lastname: Trento
mesh_terms: D001706:Biopsy; D001794:Blood Pressure; D006328:Cardiac Catheterization; D002302:Cardiac Output; D018572:Disease-Free Survival; D006084:Graft Rejection / Q000503:physiopathology*; D006339:Heart Rate; D016027:Heart Transplantation / Q000276:immunology / Q000379:methods / Q000473:pathology / Q000502:physiology*; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D012189:Retrospective Studies; D013997:Time Factors; D014184:Transplantation, Homologous