Farbdopplersonographie von Nierentransplantaten

Breitenseher, Martin; Helbich, T.; Kainberger, Franz; Hübsch, P; Trattnig, S.; Traindl, O; Mostbeck, G.

doi:10.1055/s-2007-1004000

Cited by 8 publications

(2 citation statements)

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“…[1114] In the present research, RI = 0.80 has been considered as cut off in prediction of kidney dysfunction 6 months after transplantation with sensitivity and specificity, presented values in Table 4. With regard to high RI level sensitivity 1 week after transplantation in diagnosis of kidney dysfunction, utilizing RI seems more appropriate to predict kidney dysfunction compared with measurement of RI in the first 48 hours after transplantation, similar results concerning PI values were obtained in the present study [Table 4].…”

Section: Discussionmentioning

confidence: 99%

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Color Doppler indexes in early phase after kidney transplantation and their association with kidney function on six month follow up

Adibi

Ramezani

Mortazavi³

et al. 2012

Adv Biomed Res

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Background:Doppler ultrasonography (DU) and measurement of its indexes, resistive index (RI) and pulsatility index (PI), is used to investigate transplanted kidney hemodynamic status and function. The aim of this study was to determine the correlation between Doppler indexes in the early phase after transplantation with long-term transplanted kidney function.Materials and Methods:In this cross-sectional study on 38 newly kidney transplant patients, we performed DU with assessment of its indexes within 48 hours, 1 week, and 6 months after kidney transplantation. Serum creatinine after stability and 6 months after kidney transplantation were assessed. Cyclosporine level was measured 1 week after kidney transplantation and compared with DU indexes.Results:About 71% of kidney transplanted patients reached their normal initial creatinine level(cr<1.5 mg/ dl) and 28% of all patients were involved in kidney dysfunction after 6 months (increase in basic creatinine level more than 25%).There was no significant difference between mean RI and PI in patients with normal and disturbed kidney function based on creatinine level in early posttransplantation period but there was linear correlation between mean RI and PI within 48 hours and 1 week with kidney function after 6 months. Also no association between cyclosporine level and RI and PI was shown. There was a direct association between age and the levels of RI and PI 6 months after transplantation.Conclusion:This study suggests assessment of RI and PI in early period after transplantation and can be used as predictive parameters for long-term function of transplanted kidney and RI more than 0.80 in early phase after transplantation has an acceptable sensitivity and specificity to predict long-term kidney dysfunction.

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Section: Discussionmentioning

confidence: 99%

“…The level of creatinine was measured daily up to a stable level for each patient and normal initial serum creatinine level was considered below 1.5 mg/dl after creatinine level stability. [11]…”

Section: Methodsmentioning

confidence: 99%

Color Doppler indexes in early phase after kidney transplantation and their association with kidney function on six month follow up

Adibi

Ramezani

Mortazavi³

et al. 2012

Adv Biomed Res

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Transkutane Sonographie: Organbezogene Untersuchungen nach Nieren-, Leber- und Pankreastransplantation

Lang

Braun-Lang

Weimann

et al. 2000

Viszeralchirurgische Sonographie

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Contribution of color and power Doppler sonography to the differential diagnosis of acute and chronic rejection, and tacrolimus nephrotoxicity in renal allografts

Venz

Kahl

Hierholzer

et al. 1999

Transplant International

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The aim of the present study was to differentiate acute rejection, chronic rejection, and tacrolimus nephrotoxicity with color and power Doppler imaging of renal transplants. One hundred examinations were obtained from 45 patients. Pulsatility and resistive indices were calculated from color Doppler images. The grade of renal vascularization was quantified using computer-assisted pixel analysis in a rectangular region-of-interest. The percentage of vessel-covered renal parenchyma (POV) was calculated using a histogram that discriminated renal vessels from renal parenchyma via power Doppler images. Furthermore, the distance from the most peripherally located vessels to the renal capsule (PVD) was measured. A reduced POV < or = 55% proved to be the best discriminator when chronic rejection was suspected (sensitivity 79%, specificity 87%). Tacrolimus nephrotoxicity showed not only a moderate elevation of the Doppler signal but also an increased PVD > or = 3.9 mm and a normal POV. We conclude that the evaluation of renal vessels by power Doppler images improves diagnostic accuracy for patients with renal allografts.

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Farbdopplersonographie von Nierentransplantaten

Cited by 8 publications

References 0 publications

Color Doppler indexes in early phase after kidney transplantation and their association with kidney function on six month follow up

Color Doppler indexes in early phase after kidney transplantation and their association with kidney function on six month follow up

Transkutane Sonographie: Organbezogene Untersuchungen nach Nieren-, Leber- und Pankreastransplantation

Contribution of color and power Doppler sonography to the differential diagnosis of acute and chronic rejection, and tacrolimus nephrotoxicity in renal allografts

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