title: [Predictors and reasons for readmission into cardiac intensive care unit].
abstract: OBJECTIVE
  To evaluate the predictors and reasons for readmission into cardiac intensive care unit (ICU).
  
  
  METHODS
  A total of 4978 patients underwent cardiac surgery between January 2008 and August 2010. The perioperative risk factors for readmission were analyzed by multivariate regression. And the reasons, outcomes and therapy were analyzed.
  
  
  RESULTS
  Among them, 139 patients required ICU readmission. There were 80 males and 59 females with a mean age of 50.3 years (range: 9 - 78). Their median length of first and second stays were 2.00 (1.00 - 4.00) and 3.00 (1.00 - 5.00) days respectively. The median interval from ICU discharge to ICU readmission was 3 (2.00 - 6.75) days and the median hospital stay 24.00 (16.00 - 41.25) days. Readmitted patients had a higher mortality rate than those requiring no readmission (9.4% vs 0.4%, P < 0.01). The major reasons for readmission were respiratory (n = 69, 49.6%) and circulatory complications (n = 33, 23.7%). Multivariate analysis showed that NYHA (New York Heart Association) classification (95%CI: 1.091 - 3.176, P = 0.023) and the length of initial ICU stay (95%CI: 1.105 - 1.251, P < 0.01) were independent risk factors of readmission.
  
  
  CONCLUSIONS
  NYHA classification and the length of first ICU stay are independent risk factors of readmission. Respiratory complications are the most common reasons for readmission.
authors.affiliation: Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Liu
authors.forename: Chun-sheng
authors.initials: CS
authors.lastname: Wang
authors.forename: Lan
authors.initials: L
authors.lastname: Liu
authors.forename: Ya-min
authors.initials: YM
authors.lastname: Zhuang
authors.forename: Xiao-mei
authors.initials: XM
authors.lastname: Yang
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D006348:Cardiac Surgical Procedures; D002648:Child; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D007362:Intensive Care Units; D008297:Male; D008875:Middle Aged; D010359:Patient Readmission; D011184:Postoperative Period; D012307:Risk Factors; D016896:Treatment Outcome; D055815:Young Adult