title: [The impact of admission renal dysfunction on in-hospital and long-term outcome of patients with ST-elevation myocardial infarction in Beijing].
abstract: OBJECTIVE
  To investigate impact of admission renal dysfunction on in-hospital and long-term outcome of patients with ST-elevation myocardial infarction (STEMI).
  
  
  METHODS
  This was a multicentre, observational, prospective-cohort study. Totally 718 consecutive patients were admitted to 19 hospitals in Beijing within 24 hours of onset of STEMI. Estimation of glomerular filtration rate (eGFR) was calculated according to the abbreviated MDRD equation. The patients were categorized into two groups as renal preservation group (eGFR ≥ 60 ml · min⁻¹ · 1.73 m⁻²) and renal dysfunction group (eGFR < 60 ml · min⁻¹ · 1.73 m⁻²). The association between admission renal dysfunction and in-hospital and six-year outcome was evaluated.
  
  
  RESULTS
  A total of 718 patients with STEMI were evaluated. There were 551 men and 167 women with age of (61.0 ± 13.0) years. One hundred and thirty-three patients (18.5%) had renal dysfunction. Patients with renal dysfunction were more often female and older, more patients had hypertension, diabetes and heart failure, and more patients had ≥ Killip II classes on admission. These patients were less likely to present with chest pain. The in-hospital mortality (16.5% vs 2.6%, P < 0.001), major adverse cardiac events (MACE) (60.9% vs 24.4%, P < 0.001), six-year all-cause mortality (35.3% vs 11.4%, P < 0.001), six-year cardiac mortality (15.9% vs 5.7%, P = 0.001) and six-year MACE (52.4% vs 28.0%, P < 0.001) were markedly increased in renal dysfunction group than in renal preservation group. After adjusting for other confounding factors, renal dysfunction was an independent predictor of in-hospital MACE (OR 2.120, 95% CI 1.563-2.878, P = 0.003), six-year all-cause mortality (RR 2.122, 95%CI 1.127-3.996, P = 0.020) and six-year MACE (RR 1.586, 95% CI 1.003-2.530, P = 0.047).
  
  
  CONCLUSIONS
  The mortality and MACE in STEMI patients with renal dysfunction were higher than in those with preserved renal function. Renal dysfunction evaluated by eGFR on admission is an important independent predictor of short-term and long-term outcome in patients with acute STEMI.
authors.forename: Chao
authors.initials: C
authors.lastname: Li
authors.affiliation: Cardiology Center, Peking University People's Hospital, Beijing 100044; Email: dayi.hu@medmail.com.cn.
authors.forename: Dayi
authors.initials: D
authors.lastname: Hu
authors.forename: Changsheng
authors.initials: C
authors.lastname: Ma
authors.forename: Jingang
authors.initials: J
authors.lastname: Yang
authors.forename: Li
authors.initials: L
authors.lastname: Song
authors.affiliation: Cardiovascular Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China; Email: shixubo@vip.sina.com.
authors.forename: Xubo
authors.initials: X
authors.lastname: Shi
mesh_terms: D000368:Aged; D005260:Female; D005919:Glomerular Filtration Rate / Q000502:physiology; D017052:Hospital Mortality; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis / Q000401:mortality / Q000503:physiopathology*; D011446:Prospective Studies; D051437:Renal Insufficiency / Q000401:mortality* / Q000503:physiopathology*; D016896:Treatment Outcome