Staelens Anneleen S E, Tomsin Kathleen, Oben Jolien, Mesens Tinne, Grieten Lars, Gyselaers Wilfried
Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium; Department of Obstetrics & Gynaecology, Ziekenhuis Oost Limburg, Genk, Belgium.
Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium; Department of Obstetrics & Gynaecology, Ziekenhuis Oost Limburg, Genk, Belgium.
Ultrasound Med Biol. 2014 Jul;40(7):1722-8. doi: 10.1016/j.ultrasmedbio.2014.01.014. Epub 2014 Mar 14.
The nature of venous Doppler waves is highly variable. An additional electrocardiogram (ECG) improves the interpretation of venous Doppler wave characteristics and allows measurement of venous pulse transit time. The purpose of this study was to assess the reproducibility of ECG-guided repeated measurements of venous Doppler flow characteristics before and after sonographer training and the inter- and intra-observer variability. In four groups of 25 healthy women, venous Doppler flow measurements were performed at the level of the kidneys and liver according to a standardized protocol. Intra-observer Pearson correlation coefficients of the renal interlobar vein Doppler indices were ≥ 0.80 with the addition of the ECG, which are higher than the results of a former study. The inter-observer correlation between an experienced ultrasonographer and an inexperienced ultrasonographer improved from ≥ 0.71 to ≥ 0.91 after training. The correlation range of all parameters between two independent observers improved when values were based on repeated measures. The addition of an ECG to the Doppler image, training and repeated measurements are helpful in improving venous Doppler wave interpretation.
静脉多普勒波的性质变化很大。额外的心电图（ECG）有助于更好地解读静脉多普勒波的特征，并能测量静脉搏动传输时间。本研究旨在评估在超声检查人员培训前后，由心电图引导的静脉多普勒血流特征重复测量的可重复性，以及观察者间和观察者内的变异性。在四组每组25名健康女性中，根据标准化方案在肾脏和肝脏水平进行静脉多普勒血流测量。添加心电图后，肾叶间静脉多普勒指数的观察者内Pearson相关系数≥0.80，高于先前一项研究的结果。训练后，经验丰富的超声检查人员和经验不足的超声检查人员之间的观察者间相关性从≥0.71提高到≥0.91。当基于重复测量值时，两名独立观察者之间所有参数的相关范围有所改善。在多普勒图像中添加心电图、培训和重复测量有助于改善静脉多普勒波的解读。
