Study on regular patterns of superior vena cava Doppler flow spectra in patients with superior vena cava syndrome
- VernacularTitle:上腔静脉综合征患者上腔静脉频谱多普勒变化规律研究
- Author:
Faqin LU
;
Yunyou DUAN
;
Wen WANG
- Publication Type:Journal Article
- Keywords:
Ultrasonography,Doppler;
Superior vena cava syndrome
- From:
Chinese Journal of Ultrasonography
1997;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To consecutively investigate the changes of the superior vena cava flow Doppler patterns in patients with superior vena cava syndrome (SVCS) and predict SVCS development.Methods Twenty-two definative cases with SVCS due to tumor were enrolled in this study.At different stages of therapy the superior vena cava was detected by ultrasonography.The superior vena cava Doppler spectra during cardiac cycle and respiratory cycle were analyzed respectively.Results In 22 patients with SVCS the superior vena cava Doppler flow patterns presented a developing tendency,from turbulent,continuous and high velocity pattern to normalization.The S and D waves peak velocities were ( 154.78 ?52.15 ) cm/s,( 159.38 ? 46.56 ) cm/s respectively before therapy,while after therapy ( 58.78 ? 33.43 ) cm/s,( 34.96 ? 17.56 ) cm/s respectively.The S wave and D wave respective differences in respiratory cycle were ( 2.14 ? 2.08 ) cm/s,(2.73?2.68)cm/s before therapy,while those were ( 7.68 ? 6.22 ) cm/s,( 6.32 ? 4.98 ) cm/s after therapy.Conclusions The regular changes of the superior vena cava Doppler flow patterns in tumor-induced SVCS development course were embodied in dynamic diversity.These changes could suggest SVCS development and evaluate the therapy effect on SVCS.
