使用多普勒超声检查评估马的肾动脉血流。

Hoffmann K L, Wood A K, Kirby A C

Department of Veterinary Clinical Sciences, University of Sydney, NSW, Australia.

Am J Vet Res. 1997 Jul;58(7):697-701.

OBJECTIVE

To obtain Doppler ultrasonographic images of renal arteries in horses and to establish reference range values for systolic and diastolic renal arterial blood flow and resistive indices. Also to determine whether Doppler ultrasonography could be used in horses to detect changes in renal blood flow after IV administration of furosemide.

ANIMALS

11 clinically normal adult horses.

PROCEDURES

Pulsed-wave Doppler examinations were performed on arcuate arteries of 5 sedated horses. Continuous-wave Doppler examinations were performed on pyelorenal arteries in 7 nonsedated horses and were repeated in 6 horses after furosemide administration. Peak-systolic velocity (SV) and end-diastolic velocity (EDV) were measured and the resistive indices (RI) were calculated.

RESULTS

Using pulse-wave Doppler ultrasonography in sedated horses, arcuate arteries were determined to have a SV of 0.406 +/- 0.116 m/s (mean +/- SD), EDV of 0.184 +/- 0.057 m/s, and RI of 0.549 +/- 0.044. Using continuous-wave Doppler ultrasonography in nonsedated horses, pyelorenal arteries were determined to have SV of 1.047 +/- 0.009 m/s, EDV of 0.510 +/- 0.006 m/s, and RI of 0.512 +/- 0.004. Doppler waveforms from the arcuate and pyelorenal arteries had a low resistance flow pattern, characterized by a systolic peak followed by a continuous antegrade diastolic flow. After furosemide administration, the pyelorenal arterial velocities increased, but the RI remained unchanged.

CONCLUSIONS

Doppler ultrasonography may be used to record renal blood flow in horses and to detect changes following furosemide administration.

CLINICAL RELEVANCE

Doppler ultrasonographic images may assist in the diagnosis of renal diseases that affect either blood flow or Doppler waveform.

目的

获取马肾动脉的多普勒超声图像，建立肾动脉收缩期和舒张期血流及阻力指数的参考范围值。同时确定多普勒超声检查是否可用于检测马静脉注射呋塞米后肾血流的变化。

动物

11匹临床正常的成年马。

方法

对5匹镇静马的弓形动脉进行脉冲波多普勒检查。对7匹未镇静马的肾盂肾动脉进行连续波多普勒检查，并在6匹马注射呋塞米后重复检查。测量收缩期峰值速度（SV）和舒张末期速度（EDV），并计算阻力指数（RI）。

结果

使用脉冲波多普勒超声对镇静马进行检查，确定弓形动脉的SV为0.406±0.116 m/s（平均值±标准差），EDV为0.184±0.057 m/s，RI为0.549±0.044。使用连续波多普勒超声对未镇静马进行检查，确定肾盂肾动脉的SV为1.047±0.009 m/s，EDV为0.510±0.006 m/s，RI为0.512±0.004。弓形动脉和肾盂肾动脉的多普勒波形具有低阻力血流模式，其特征为收缩期峰值后跟随持续的正向舒张期血流。注射呋塞米后，肾盂肾动脉速度增加，但RI保持不变。