正常成人颈内静脉多普勒血流频谱分析  

Analysis of Doppler flow spectra of internal jugular vein in healthy adults

作　　者：段云友[1] 吕发勤[1] 王文[1] 袁丽君[1] 贾化平[1] 李莹莹[1] 

机构地区：[1]第四军医大学唐都医院超声诊断科,西安710038

出　　处：《中华超声影像学杂志》2003年第12期724-726,共3页Chinese Journal of Ultrasonography

摘　　要：目的　利用多普勒超声对正常成人不同年龄段颈内静脉血流动力学进行分析 ,探讨其血流频谱变化与呼吸、心动周期的关系。方法　对随机选取的 12 0名成年健康志愿者沿颈总动脉外侧探测颈内静脉 ,在二维切面的基础上获取其血流频谱 ,测定不同心动周期及呼吸周期中颈内静脉血流动力学指标。结果　在心动周期中 ,颈内静脉血流频谱呈现收缩期S波、舒张期D波和舒张期A波 ;在平静呼吸状态下 ,受检者吸气相和呼气相S波速率分别为 (2 7.17± 19.88)cm/s、(19.0 4± 14 .2 6)cm/s ,D波速率分别为(17.43± 12 .78)cm/s、(12 .70± 10 .57)cm /s ,吸气相速率较呼气相速率快 (均P <0 .0 0 1) ,呼吸周期中A波速率无明显变化 [(6.3 8± 6.3 2 )cm/s、(7.59± 7.42 )cm /s,P >0 .0 5] ;60岁以上组S和D波血流速率较 2 0～ 60岁组血流速度低 (P <0 .0 5)。结论　正常颈内静脉血流频谱由 3个波组成 ,频谱形态随心动周期、呼吸周期呈规律性变化 ;年龄因素影响颈内静脉多普勒血流速率 ;Objective To analyze the flow spectra of in ternal jugular vein (IJV) in healthy adults by pulsed Doppler ultrasonography. Methods IJV flow velocities in 120 healthy volunteers were recorded during cardiac and respiratory cycles respectively with the transducer placed in cervical region view. Results In healthy subjects, IJV waveforms were composed of one reverse wave A and two forward waves S and D during cardiac cycle. The flow velocities of wave S [( 27.17 ± 19.88 )cm/s vs ( 19.04 ± 14.26 )cm/s] and wave D [( 17.43 ± 12.78 )cm/s vs ( 12.70 ± 10.57 )cm/s] were quicker during inspiration than those during expiration (P< 0.001 ). The velocities of wave A showed no difference during eupnea[( 6.38 ± 6.32 ) cm/s vs ( 7.59 ± 7.42 )cm/s,P> 0.05 ]. The velocities of wave S and wave D in the group aged over sixty years old were lower than those in the group aged between 20-60 years old(P< 0.05 ). Conclusions IJV waveforms were composed of one reverse wave A and two forward waves S and D. The flow spectra of IJV change regularly with cardiac and respiratory cycle.The age factor affects IJV flow velocity. The criterion indexes of Doppler sonography on IJV are set up on flow spectra.

关 键 词：正常成人 血流频谱 血流动力学 多普勒超声 心动周期 呼吸周期 

分 类 号：R699.2[医药卫生—泌尿科学]