Doppler Ultrasonography in Renovascular Hypertension

Gokhale, Sudheer

doi:10.1016/j.cult.2010.07.002

Cited by 2 publications

(3 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The blood flow velocity increases significantly within a narrow segment to maintain this flow through the stenotic segment. Gokhale () also observed that the increase in velocity is proportional to the degree of narrowing of the lumen. In these cases, the objective of the spectral Doppler examination is to detect the high focal turbulent velocity flow in the main kidney arteries, which would indicate stenosis.…”

Section: Discussionmentioning

confidence: 93%

See 1 more Smart Citation

Comparative B‐mode and Doppler renal ultrasonography with histopathological findings in dogs positive for canine visceral leishmaniasis

Baltazar

Moura

Pessoa

et al. 2016

Microscopy Res & Technique

View full text Add to dashboard Cite

Morphological parameters and renal flow were assessed and measured in six clinically healthy dogs with negative serological and parasitological examinations for canine visceral leishmaniasis (CVL) and six dogs with CVL-positive serological and parasitological tests and asymptomatic condition of the disease. Kidney length and diameter were measured and compared with the aorta/kidney ratio. Alterations in flow were measured using the flow velocity (cm/s) and resistance index (RI). Renal function was assessed by serum biochemical examination (urea, creatine, total proteins, albumin, and globulin) and urinalysis. CVL-positive animals presented heterogeneous kidney echotexture, reduced vascular flow, hypoperfusion, lesser visualization of the arcuate arteries, high RI values (1.06 ± 0.28 for the right kidney and 1.10 ± 0.30 for the left kidney), reduced diastolic flow, and high systolic peak. They also presented positive creatine/RI correlation and between the renal artery vascular flow and kidney diameter. Histopathological analysis of CVL-positive animals was compatible and confirmed hemodynamic changes observed by Doppler ultrasound. The findings in the present study showed that Doppler ultrasonography is a valid method to assess and detect alterations in flow in renal pathological processes with kidney vascular damage, as in the case of leishmaniasis, and can help in the diagnosis of animals with this infection. Microsc. Res. Tech. 79:637-645, 2016. © 2016 Wiley Periodicals, Inc.

show abstract

Section: Discussionmentioning

confidence: 93%

“…The abdominal aorta, the main renal artery, and the interlobar arteries are the main targets of Doppler ultrasonography (Gokhale, ). The kidneys have an intrinsic self‐regulating mechanism that maintains the blood flow relatively constant.…”

Section: Introductionmentioning

confidence: 99%

Comparative B‐mode and Doppler renal ultrasonography with histopathological findings in dogs positive for canine visceral leishmaniasis

Baltazar

Moura

Pessoa

et al. 2016

Microscopy Res & Technique

View full text Add to dashboard Cite

show abstract

“…The Direct Doppler criteria for renovascular hypertension includes the following: peak systolic blood flow velocity (VmaxS) > 180 cm/s, end-diastolic flow velocity (VendD) > 50 cm/s, reno-aortic index (RAR) > 3.5 and reno-renal index (RRR) > 4.0 (14-16). The indirect Doppler criteria for renovascular hypertension include: loss of early systolic peak (ESP), resistance index (RI) < 0.45, acceleration time (AT) > 70 ms, acceleration (Acc) < 300 cm/s 2 , the difference in resistance index (∆RI) > 0.05 (> 5%), the peak systolic velocity measured from the blood flow curve through interlobar arteries < 15 cm/s and the ratio of peak systolic velocity measured from the blood flow through the interlobar arteries of both kidneys (RIR) > 5 (renal interlobar ratio -RIR) (15)(16)(17)(18).…”

Section: Renovascular Hypertensionmentioning

confidence: 99%