Prognostic Value of Dynamic Tissue Perfusion Measurements in Transplanted Kidneys - Open Journal of Organ Transplant Surgery

OJOTS > Vol.4 No.1, February 2014

Prognostic Value of Dynamic Tissue Perfusion Measurements in Transplanted Kidneys ()

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DOI: 10.4236/ojots.2014.41001 3,882 Downloads 6,145 Views

Author(s)

Thomas Scholbach^1*, Hsin-Kai Wang², Che-Chuan Loong³, Tsai-Hung Wu⁴

Affiliation(s)

¹Hospital for Children and Adolescents, Chemnitz Clinics, Chemnitz, Germany.
²Department of Radiology, Taipei Veterans General Hospital and School of Medicine, National Yang-Ming University, Taipei City.
³Department of Surgery, Taipei Veterans General Hospital and School of Medicine, National Yang-Ming University, Taipei City.
⁴Department of Internal Medicine, Taipei Veterans General Hospital and School of Medicine, National Yang-Ming University, Taipei City.

ABSTRACT

Background: The dynamic tissue perfusion measurement in renal transplants has demonstrated its potential to correlate microvascular perfusion changes with histologic changes in the renal cortex [1]. It has shown in cross sectional studies that the cortical perfusion depends on the time elapsed after transplantation [2,3], but has not yet been applied as a prognostic marker. Therefore, we compared in a prospective 6-year study the initial perfusion measurements with the outcome of the graft function. Method: In 78 renal graft recipients, standardized color Doppler sonographic videos were recorded and cortical perfusion was measured in well-defined regions of interest with the PixelFlux-software. Results: In the beginning of the study, prospectively failing grafts (requiring dialysis) had a significantly lower cortical perfusion compared to grafts with preserved function (0.40 vs. 0.57 cm/s average perfusion intensity of the entire cortex). The interval between perfusion measurement and graft failure was 2.17 years (0 - 6 years). Conclusion: Thus, dynamic tissue perfusion measurement may have a role in the prospective evaluation of renal transplant function. Summary: In 78 transplant recipients, we could demonstrate the prognostic potential of the dynamic color Doppler sonographic perfusion measurement of renal transplants. Perfusion was significantly diminished in those grafts that failed later on within a 6-year period. Thus, cortical perfusion measurement might be valuable as a non-invasive prospective method which reflects the state of the cortical microvasculature.

KEYWORDS

Color Doppler Ultrasound; Microvasculature; Perfusion Measurement; Prognostic Value; Renal Transplant

Share and Cite:

Scholbach, T. , Wang, H. , Loong, C. and Wu, T. (2014) Prognostic Value of Dynamic Tissue Perfusion Measurements in Transplanted Kidneys. Open Journal of Organ Transplant Surgery, 4, 1-5. doi: 10.4236/ojots.2014.41001.

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