[Comparison of the systemic vascular resistance and the correlative factors in Han and Korean populations of China.].

In the present study, the differences in systemic vascular resistance (SVR) and the correlated risk factors between Han and Korean residents were investigated. 1 647 Hans and 876 Koreans from Mudanjiang and Hailin areas of Heilongjiang Province were examined with BIOZ Cardio Dynamics Monitor. A series of factors were determined, including SVR, systemic vascular resistance index (SVRI), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), cardiac output (CO), cardiac output index (CI) and heart rate (HR). The data were analyzed with SPSS 15.0 statistic software. When SVR/SVRI were compared between Han and Korean populations by t-test, it was shown that statistic difference existed in the following age and gender groups: (1) For SVR: male 41-50, 51-60, and 61-70 (P<0.001), 31-40 (P<0.01), 19-30 (P<0.05) age groups; female 15-18, 31-40, 51-60 (P<0.001), 41-50 (P<0.01), and 61-70 (P<0.05) age groups; (2) For SVRI, male 41-50, 51-60 (P<0.05) age groups; female 10-14, 51-60 (P<0.001), 15-18, 31-40 (P<0.01), and 41-50 (P<0.05) age groups. Covariance analysis suggests that, excluding the contributions of gender, age and body mass index (BMI), the differences in SVR/SVRI between the two populations are still significant (P<0.001). Multiple linear regression analysis reveals that SVR difference between Han and Korean populations is attributed to MAP, DBP, CI, SBP, HR; While SVRI difference between two populations is attributed to MAP, DBP, SBP, CI, HR, strongly to weakly, respectively. These results suggest the higher SVR and SVRI are possibly correlated with the relatively higher blood pressure of Korean, compared with that of Han population.