Preliminary observation of the hemodynamic changes of primary hypertension with wave intensity
10.3321/j.issn:1003-3289.2009.12.022
- VernacularTitle:应用波强技术初步评价原发性高血压患者血流动力学变化
- Author:
Fengxia DUAN
;
Mingxing XIE
;
Jing WANG
;
Qing LV
;
Xinfang WANG
;
Meiling WANG
;
Junhong HUANG
;
Yehua YIN
- Publication Type:Journal Article
- Keywords:
Wave intensity;
Ultrasonography;
Carotid arteries;
Hypertension
- From:
Chinese Journal of Medical Imaging Technology
2009;25(12):2224-2227
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe hemodynamic changes in patients with primary hypertension with wave intensity (WI). Methods Carotid arteries of 36 patients with primary hypertension and 30 age-matched normal controls were examined with imaging technique of WI. The following parameters were measured: the first wave peak in early ejection (W1), the second wave peak in late ejection (W2), the negative area during the mid-ejection (NA), the interval between the R wave of the ECG and the first peak of W1 (R-1st), the interval between the first peak and the second peak (1~(st)-2~(nd)), the ratio of R-1st and a cardiac cycle time R-1_(HR)~(st)) and the ratio of 1~(st)-2~(nd) , as well as one cardiac cycle time (1~(st)-2(_(HR)~(nd)). Results ①W1 in primary hypertension group increased compared with those of normal controls (P＜0.01), while no significant difference of W2, NA, R-1st, 1~(st)-2~(nd), R-1_(HR)~(st), 1~(st)-2_(nd)~(HR) was detected (P＞0.05). ②Both W1 and W2 correlated positively with pulse pressure (PP) and systolic blood pressure (SBP) (r=0.66, 0.55, P＜0.01;r=0.62, 0.44, P＜0.01). W1, W2 and age, DBP were not related significantly (P＞0.05). Conclusion The hemodynamic parameters of WI technology provide a new way to evaluate the dynamics of the heart and vascular system and their interaction.
