title: Differences in heart stroke volume between Han and Korean-Chinese nationalities and correlative factors.
abstract: OBJECTIVE
  To compare the differences in stroke volume (SV) and stroke volume index (SI) between Han and Korean-Chinese and to investigate the correlated risk factors.
  
  
  METHODS
  A total of 1 647 Han and 876 Korean-Chinese aged 10-80 years were investigated. SV, SI, cardiac output, cardiac output index, heart rate (HR), systemic vascular resistance (SVR), systemic vascular resistance index (SVRI), and blood pressure were measured.
  
  
  RESULTS
  SV/SI values in Korean-Chinese were lower than those in the Han of the same sex and age. Covariance analysis showed that, apart from the effect of sex, age and body mass index (BMI), the differences in SV and SI between the two cohorts were still significant (P<0.001). Multiple regression analysis revealed that the SV difference between the two ethnicities was affected (in descending order from a strong to weak correlation) by SVR, SVRI, HR, diastolic blood pressure, mean arterial pressure, BMI, and systolic blood pressure, while the SI difference was affected by SVR, SVRI, HR, mean arterial pressure, diastolic and systolic blood pressure, and BMI.
  
  
  CONCLUSIONS
  The Fact that SV and SI in Korean-Chinese are lower than those in Han is related with higher SVR, HR and blood pressure in the Korean-Chinese.
authors.affiliation: Department of Physiology and Pathophysiology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing.
authors.forename: Yangxing
authors.initials: Y
authors.lastname: Pan
authors.forename: Baoshen
authors.initials: B
authors.lastname: Qi
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Zhou
authors.forename: Shaomei
authors.initials: S
authors.lastname: Han
authors.forename: Xue
authors.initials: X
authors.lastname: Zhang
authors.forename: Zhengguo
authors.initials: Z
authors.lastname: Zhang
authors.forename: Guangjin
authors.initials: G
authors.lastname: Zhu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People; D001794:Blood Pressure / Q000502:physiology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume / Q000502:physiology*; D055815:Young Adult