Variability of Doppler parameters in the healthy kidney: an anatomic-physiologic correlation.

Knapp, Rudolf; Plötzeneder, A; Frauscher, Ferdinand; Helweg, Gernot; Judmaier, Werner; Nedden, Dieter zur; Recheis, Wolfgang; Bartsch, Georg

doi:10.7863/jum.1995.14.6.427

Cited by 63 publications

(40 citation statements)

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“…In fact, arteriography visualizes only the most advanced alterations of intrarenal arteries, while renal biopsy identifies very initial lesions in a limited area that can be unrepresentative of the whole organ. Among the parameters obtained by DDU, RI is considered the most consistent and reproducible [5]. In the present study the coefficient of variation of RI --six measurements in different areas of both kidneys for each subject --was very small (4 ± 1.4 %).…”

Section: Discussionmentioning

confidence: 76%

“…The coefficient of variation was 4 ± 1.4 %. Values of RI higher than 0.7 were considered pathologic [5].…”

Section: Methodsmentioning

confidence: 99%

“…The recent availability of duplex Doppler ultrasonography (DDU) has provideda rapid and non-invasive method with which to study the characteristics of intrarenal blood flow [5]. The method permits the evaluation of changes in arterial impedance, as defined by the intrarenal resistive index (RI), which is increased in vascular and tubulointerstitial pathologies, while it is not influenced by pure glomerular disease [6].…”

mentioning

confidence: 99%

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Intrarenal arteriosclerosis and impairment of kidney function in NIDDM subjects

et al. 1998

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Section: Discussionmentioning

confidence: 76%

“…The coefficient of variation was 4 ± 1.4 %. Values of RI higher than 0.7 were considered pathologic [5].…”

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Intrarenal arteriosclerosis and impairment of kidney function in NIDDM subjects

et al. 1998

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“…RI was determined in three different segmental arteries of both kidneys, and expressed as the mean of these values; this method was reported to be identical and technically easy to perform so that reproducibility of RI could be improved. [18][19][20] Previous studies indicated that reliable RI measurements depended on proper measuring techniques performed by experienced operators, 21 so in this study Doppler examinations were performed by the three experienced operators (TK, KK and MO) using a XARIO SSA-660A ultrasound machine (TOSHIBA, Tokyo, Japan) with a 2.5-MHz sector transducer.…”

Section: Ultrasonographic Determinationmentioning

confidence: 99%

The impact of visit-to-visit variability in blood pressure on renal function

et al. 2011

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Hypertension is an important risk factor for cardiovascular diseases such as chronic kidney disease. It is still not fully understood how blood pressure impacts the kidneys. In this study, we aimed to establish the significance of visit-to-visit variability in blood pressure for renal function. We analyzed 143 consecutive patients undergoing renal Doppler ultrasonography in our hospital ward and measured blood pressure at outpatient visits six or more times. We analyzed the correlation between visit-to-visit variability in blood pressure and multiple clinical parameters, including albuminuria and resistive index evaluated by renal Doppler ultrasonography, which is thought to be a good indicator of renal vascular resistance. Subjects with higher variability in systolic blood pressure showed a significantly higher prevalence rate of clinical albuminuria and microalbuminuria, and showed significantly higher resistive index. Stepwise multiple regression analysis showed that variability in systolic blood pressure was a significant risk factor for higher resistive index, independent of other renal risk factors. Visit-to-visit variability in blood pressure correlates significantly with renal function and renal arteriosclerotic change. This parameter could provide additional information about renal arteriosclerotic change independent of estimated glomerular filtration rate and albuminuria, and should be considered a therapeutic target for renal protection.

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“…Dabei erweist es sich als besonderer Vorteil, dass dieses Verfahren in allen Phasen der Therapie eine simultane Datenerfassung ermög-licht. Mit den bei der Dopplersonographie erhobenen Werten kann der RI berechnet werden, der als aussagekräftiges, nichtinvasives diagnostisches Mass zur Bewertung von Wider- [8]. Eine Steigerung des RI steht für einen höheren Gefässwiderstand und eine Verminderung der Durchblutung, während ein Abfall auf eine Reduktion des Gefässwiderstands und eine Steigerung der Durchblutung schliessen lässt.…”

Section: Diskussionunclassified

Beeinflussung der Darmdurchblutung durch Fussreflexzonenmassage, gemessen mittels farbkodierter Dopplersonographie

Mur

Schmidseder²,

Egger³

et al. 2001

Complement Med Res

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Influence of Reflex Zone Therapy of the Feet on Intestinal Blood Flow Measured by Color Doppler Sonography Objective: An influence on organ-associated blood flow is considered as a possible mechanism of action of reflex zone massage of the feet (FRZM) therapy. In the present study we investigated whether changes in intestinal blood flow can be achieved by FRZM. Material and Methods: 32 healthy adults (19 women and 13 men) were randomly assigned to the treatment or the placebo group. Subjects of the treatment group received foot massage on the zones assigned to the intestines and those of the placebo group received massage on zones unrelated to the intestines. Before, during and after FRZM, the blood flow velocity, the peak systolic and the end diastolic velocities in the superior mesenteric artery as well as the resistive index as a parameter of vascular resistance were calculated. Results: During FRZM, in the subjects of the treatment group there was a significant reduction in the resistive index (p = 0.021), suggesting an increase in the blood flow in the superior mesenteric artery and the subordinate vascular system. In contrast, there were no significant changes in the resistive index in the subjects of the placebo group. Conclusion: The reduction in the resistive index observed in the treatment group supports the assumption that FRZM improves blood flow in the organs considered to be associated with the specific foot zones, at least during the therapy process.

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Variability of Doppler parameters in the healthy kidney: an anatomic-physiologic correlation.

Cited by 63 publications

References 1 publication

Intrarenal arteriosclerosis and impairment of kidney function in NIDDM subjects

Intrarenal arteriosclerosis and impairment of kidney function in NIDDM subjects

The impact of visit-to-visit variability in blood pressure on renal function

Beeinflussung der Darmdurchblutung durch Fussreflexzonenmassage, gemessen mittels farbkodierter Dopplersonographie

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