title: The relationship between heart rate and mortality of patients with acute coronary syndromes in the coronary intervention era: Meta-analysis.
abstract: BACKGROUND
  Most of acute coronary syndromes (ACS) were receiving intervention treatment a high overall rate of coronary angiography in the modern medical practice.Consequently, we conduct a review to determine the heart rate (HR) on the prognosis of ACS in the coronary intervention era.
  
  
  METHODS
  PubMed, EMBASE, MEDLINE, and the Cochrane Library was systematically searched up to May 2016 using the search terms "heart rate," "acute coronary syndrome," "acute myocardial infarction," "ST elevation myocardial infarction," "non-ST-segment elevation." The outcome of interest was all-cause mortality. All analyses were performed using Review Manager.
  
  
  RESULTS
  Database searches retrieved 2324 citations. Eleven studies enrolling 156,374 patients were included. In-hospital mortality was significantly higher in the elevated HR group compared to the lower HR group (pooled RR 2.04, 95%CI 1.80-2.30, P < 0.0001). Individuals with elevated admission HR had increased risk of long-term mortality (Pooled RR = 1.63, 95%CI 1.27-2.10, P = 0.008) compared to lower admission HR. The pooled results showed elevated discharge and resting HR were related to increased mortality of patients with ACS (pooled RR 1.88, 95% CI 1.02-3.47, P = 0.04; pooled RR 2.14, 95%CI 1.37-3.33, P < 0.0001, respectively).
  
  
  CONCLUSIONS
  Elevated HR may increase the mortality of ACS patients in the percutaneous coronary intervention era.
authors.affiliation: Department of Cardiology, First Affiliated Hospital of Shantou University Medical, College, Shantou, Guangdong Department of Cardiology, Wuhan Asian Heart Hospital, Wuhan, Hubei, China.
authors.forename: Tan
authors.initials: T
authors.lastname: Xu
authors.forename: Youqin
authors.initials: Y
authors.lastname: Zhan
authors.forename: Jianping
authors.initials: J
authors.lastname: Xiong
authors.forename: Nan
authors.initials: N
authors.lastname: Lu
authors.forename: Zhuoqiao
authors.initials: Z
authors.lastname: He
authors.forename: Xi
authors.initials: X
authors.lastname: Su
authors.forename: Xuerui
authors.initials: X
authors.lastname: Tan
mesh_terms: D054058:Acute Coronary Syndrome / Q000401:mortality* / Q000503:physiopathology* / Q000601:surgery*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D062645:Percutaneous Coronary Intervention; D011379:Prognosis