Department of Veterinary Medicine, Federal University of Paraná, Curitiba, Brazil.
J Vet Intern Med. 2020 Jan;34(1):45-52. doi: 10.1111/jvim.15665. Epub 2019 Dec 25.
Spectral Doppler assessment of hepatic veins may provide information on heart function.
HYPOTHESIS/OBJECTIVES: To assess the normal pattern of hepatic venous flow using spectral Doppler ultrasound examination; to correlate this information with structural and functional variables of the right ventricle (RV), and to analyze the impact of age, sex, body weight quartiles, heart rate, cardiac rhythm, and systolic arterial pressure on the results in healthy dogs.
Sixty-five healthy dogs.
Cross-sectional observational study. The direction and maximum velocity of each of the 4 possible components of venous flow were determined from pulsed-wave Doppler examination of the hepatic veins. In addition, structural and functional parameters (TAPSE, longitudinal strain, FAC%, S', E /A and E' / A' ) of the RV were evaluated.
The same phase patterns for different waves were seen in all animals: A and V were retrograde waves, and S and D were anterograde waves. The velocity of the spectral waves increased with body weight (P < .05) and could be correlated with functional indices of the RV. A significant difference was found when comparing morphometric indices with body weight quartiles (P < .05). In addition, intra-and inter-observer assessments showed low variability. The mean duration of the examinations was 5.2 minutes.
Hepatic spectral Doppler findings can be correlated with systolic and diastolic indices of the RV and vary with body weight.
肝静脉频谱多普勒评估可提供有关心功能的信息。
假设/目的：使用频谱多普勒超声检查评估肝静脉血流的正常模式；将这些信息与右心室（RV）的结构和功能变量相关联，并分析年龄、性别、体重四分位数、心率、心律和收缩压对健康犬结果的影响。
65 只健康犬。
横断面观察性研究。从肝静脉脉冲波多普勒检查确定静脉血流的 4 个可能成分中的每个成分的方向和最大速度。此外，还评估了 RV 的结构和功能参数（TAPSE、纵向应变、FAC%、S'、E/A 和 E'/A'）。
所有动物的不同波的相同相位模式：A 和 V 为逆行波，而 S 和 D 为顺行波。随着体重的增加，频谱波的速度增加（P < .05），并且可以与 RV 的功能指数相关。当比较形态计量指数与体重四分位数时，发现有显著差异（P < .05）。此外，观察者内和观察者间评估显示出低变异性。检查的平均持续时间为 5.2 分钟。
肝频谱多普勒发现可与 RV 的收缩和舒张指数相关，且随体重而变化。
