Preliminary observation of the hemodynamic changes of primary hypertension with wave intensity / 中国医学影像技术
Chinese Journal of Medical Imaging Technology
; (12): 2224-2227, 2009.
Article
em Zh
| WPRIM
| ID: wpr-473424
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WPRO
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.
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Zh
Revista:
Chinese Journal of Medical Imaging Technology
Ano de publicação:
2009
Tipo de documento:
Article