title: [Analysis of risk factors for the development of hemorrhagic cystitis post allogeneic hematopoietic stem cell transplantation].
abstract: OBJECTIVE
  To analyze the incidence and risk factors of hemorrhagic cystitis (HC) after allogeneic hematopoietic stem cell transplantation (HSCT).
  
  
  METHODS
  The medical records of 250 patients undergoing allogeneic HSCT in Peking University Institute of Hematology from Sep. 2003 to Sep. 2005 were analyzed.
  
  
  RESULTS
  HC occurred in 72 of the 250 patients within 180 days after transplantation with a cumulative incidence of 28.8% (SE 0.3%). None of early-onset HC was developed in the cohort. The median time of onset was 33 days after HSCT (range 14 - 170 days) and the median duration of HC was 35 days (range 3 -186 days). There were HC of grade I - II in 51/72 cases (70.83%) and of grade III - IV in 21/72 (29.17%). Univariate analysis indicated that age younger than 25, high risk disease, CMV reactivation, ATG usage, graft from MUD or MMRD and GVHD grade IL - IV were associated with the occurrence of HC, while in multiple regression analysis only GVHD grade II - IV (RR = 2.75; 95% CI 1.63 -4.66; P < 0.01) and donor type (RR = 2.60; 95% CL 1.52 - 5.20; P < 0.01) were independent risk factors. Kaplan-Meier survival analysis indicated HC not increasing the mortality (RR = 0.67, 95% CI 0.33 - 1.36).
  
  
  CONCLUSIONS
  HC post allo-HSCT is a common complication, GVHD grade II - IV and donor type are the independent risk factors.
authors: Institute of Hematology, People's Hospital, Peking University, Beijing 100044, China.
authors: Hong-Yu
authors: HY
authors: Zhang
authors: Xiao-Jun
authors: XJ
authors: Huang
authors: Lan-Ping
authors: LP
authors: Xu
authors: Dai-Hong
authors: DH
authors: Liu
authors: Kai-Yan
authors: KY
authors: Liu
authors: Wei
authors: W
authors: Han
authors: Huan
authors: H
authors: Chen
authors: Yu-Hong
authors: YH
authors: Chen
authors: Dao-Pei
authors: DP
authors: Lu
mesh_terms: D003556:Cystitis / Q000453:epidemiology / Q000209:etiology*; D005500:Follow-Up Studies; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D015994:Incidence; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology; D012189:Retrospective Studies; D012307:Risk Factors; D014184:Transplantation, Homologous