title: [Types and risk factors of arrhythmia on young patients with acute coronary syndrome in Henan province].
abstract: OBJECTIVE
  The types and risk factors of arrhythmia were analyzed on acute coronary syndrome (ACS) patients under the age of 44 years who were hospitalized in Henan province between September 2009 to June 2012.
  
  
  METHODS
  Medical records of eligible patients were obtained from the information system of the First Affiliated Hospital of Zhengzhou University teleconsultation information center. Middle aged and elderly ACS patients who were hospitalized at the same period served as controls. Data on arrhythmia types, blood pressure, thyroid disease, respiratory sleep apnea syndrome, smoking history, history of alcohol consumption, eating habits, family history of early-onset arrhythmia, laboratory tests were analyzed.
  
  
  RESULTS
  (1) Arrhythmia was detected in 110 out of young ACS patients (55%), which was significantly lower than that in the elderly ACS patients (71.05%, P < 0.01). (2) The top three arrhythmias in young ACS patients were: sinus tachycardia (30.50%), the premature ventricular contractions (19.00%), atrial flutter/atrial fibrillation (16.50%). Incidence of sinus tachycardia, atrial flutter/atrial fibrillation were significantly higher while incidence of ventricular tachycardia, ventricular fibrillation, paroxysmal supraventricular tachycardia were significantly lower in young ACS patients than in middle-aged ACS patients (all P < 0.05). The incidence of sinus tachycardia was higher while incidence of ventricular premature accelerated ventricular spontaneous cardiac rhythm, ventricular tachycardia, ventricular fibrillation, non-paroxysmal supraventricular tachycardia, atrial flutter/atrial fibrillation, paroxysmal supraventricular tachycardia, sinus bradycardia, nodal escape, atrioventricular block were significantly lower in young ACS patients than in elderly ACS patients (all P < 0.05). (3) Body mass index, incidence of smoking, coronary three-vessel disease, drinking, eating salty foods, thyroid dysfunction, sleep apnea were significantly higher in youth ACS patients with arrhythmia than in young ACS patients without arrhythmia (all P < 0. 05). (4) Logistic regression analysis found that number of diseased coronary vessels (OR = 24.293), smoking (OR = 1.112) and alcohol consumption (OR = 1.039) were independent risk factor for developing arrhythmia in young ACS patients from Henan province.
  
  
  CONCLUSIONS
  The main types of arrhythmia are sinus tachycardia, premature ventricular contractions, atrial flutter/atrial fibrillation and the major risk factors related to the arrhythmia are number of diseased coronary vessels, smoking and alcohol consumption in young ACS patients from Henan province.
authors.affiliation: Department of Cardiology, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China. Email:zhaojing1115@126.com.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.forename: Fei
authors.initials: F
authors.lastname: He
authors.forename: Da-yi
authors.initials: DY
authors.lastname: Hu
authors.forename: Rong-jing
authors.initials: RJ
authors.lastname: Ding
authors.forename: Xiao-jun
authors.initials: XJ
authors.lastname: Yu
authors.forename: Jian-jun
authors.initials: JJ
authors.lastname: Gou
authors.forename: Long
authors.initials: L
authors.lastname: Wang
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang
authors.forename: Xue-bin
authors.initials: XB
authors.lastname: Li
authors.forename: Ji-hong
authors.initials: JH
authors.lastname: Guo
authors.forename: Wen-ling
authors.initials: WL
authors.lastname: Liu
authors.forename: Cui-Lan
authors.initials: CL
authors.lastname: Li
authors.forename: Lei
authors.initials: L
authors.lastname: Li
authors.forename: Chuan-yu
authors.initials: CY
authors.lastname: Gao
authors.forename: Luo-sha
authors.initials: LS
authors.lastname: Zhao
authors.forename: Ying-Jie
authors.initials: YJ
authors.lastname: Chu
authors.forename: Zhen-wen
authors.initials: ZW
authors.lastname: Huang
authors.forename: Jing-han
authors.initials: JH
authors.lastname: Wei
authors.forename: Shao-hua
authors.initials: SH
authors.lastname: Hua
authors.forename: Rui-yun
authors.initials: RY
authors.lastname: Liu
authors.forename: Xiao-feng
authors.initials: XF
authors.lastname: Zhuang
mesh_terms: D054058:Acute Coronary Syndrome / Q000150:complications* / Q000453:epidemiology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001145:Arrhythmias, Cardiac / Q000453:epidemiology / Q000209:etiology*; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors