Computed tomography in the preoperative and postoperative evaluation of kidney transplant patients

Timur Sarsengaliyev, Elmira Chuvakova, Boris Tsoy, Aisulu Zhangalova, Abduzhappar Gaipov

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Objectives: Computed tomography is required for selection of living donors for kidney transplant. We assessed the diagnostic relevance and effectiveness of multiphase contrast-enhanced computed tomo - graphy angiography for evaluating patients before and after transplant. Materials and Methods: Thirty-two potentially living kidney donors (15 men and 17 women) underwent multiphase computed tomography angiography for evaluation before kidney trans - plant and 2 posttransplant recipients under went this test owing to abnormal vascularization. Computed tomography angio graphy was used to determine parenchymal blood-flow conditions and vascular architecture of the kidney grafts. All of the 34 patients underwent prestudy Doppler ultra - sonography. Results: Additional renal arteries were found in 11 patients (32.3%). From them, a single additional renal artery, situated from the aorta to the lower segment of the kidney, was observed in 8 (72.7%) patients; dual additional renal arteries with equivalent caliber trunks were observed in 3 (27.3%) patients. An additional renal artery occurred more often in women in 6 (54.5%) donors. Concomitant renal pathology was detected in 3 (9.3%) of 32 donors: simple cysts in 2 donors and hydro nephrosis transformation in 1 donor. These 3 cases represented an accidental discovery and were therefore excluded from the list of donors. In addition, all donors underwent excretory-phase computed tomography, and their renal function and urinary collecting system results were evaluated. Two recipients with graft dysfunction presented with decreased venous return and delayed arterial filling of the renal arteries that manifested as delayed contrast in the kidney graft medulla. Renal parenchymal ischemic zones were consistent with microvasculature thrombosis, the most common cause of vascular complications in these recipients. Conclusions: Multiphase computed tomography angiography is a necessary tool for assessing the structure and condition of vascular architecture in kidney donors and recipients. Individuals with ambiguous Doppler results, this test should be required; it is also warranted when renal graft vascular complications are suspected.

Original languageEnglish (US)
Pages (from-to)88-90
Number of pages3
JournalExperimental and Clinical Transplantation
Volume13
DOIs
StatePublished - Nov 1 2015

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Tomography
Transplants
Kidney
Renal Artery
Tissue Donors
Blood Vessels
Living Donors
Kidney Medulla
Nephrosis
Doppler Ultrasonography
Microvessels
Aorta
Cysts
Angiography
Thrombosis
Pathology

All Science Journal Classification (ASJC) codes

  • Transplantation

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Computed tomography in the preoperative and postoperative evaluation of kidney transplant patients. / Sarsengaliyev, Timur; Chuvakova, Elmira; Tsoy, Boris; Zhangalova, Aisulu; Gaipov, Abduzhappar.

In: Experimental and Clinical Transplantation, Vol. 13, 01.11.2015, p. 88-90.

Research output: Contribution to journalArticle

Sarsengaliyev, Timur ; Chuvakova, Elmira ; Tsoy, Boris ; Zhangalova, Aisulu ; Gaipov, Abduzhappar. / Computed tomography in the preoperative and postoperative evaluation of kidney transplant patients. In: Experimental and Clinical Transplantation. 2015 ; Vol. 13. pp. 88-90.
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abstract = "Objectives: Computed tomography is required for selection of living donors for kidney transplant. We assessed the diagnostic relevance and effectiveness of multiphase contrast-enhanced computed tomo - graphy angiography for evaluating patients before and after transplant. Materials and Methods: Thirty-two potentially living kidney donors (15 men and 17 women) underwent multiphase computed tomography angiography for evaluation before kidney trans - plant and 2 posttransplant recipients under went this test owing to abnormal vascularization. Computed tomography angio graphy was used to determine parenchymal blood-flow conditions and vascular architecture of the kidney grafts. All of the 34 patients underwent prestudy Doppler ultra - sonography. Results: Additional renal arteries were found in 11 patients (32.3{\%}). From them, a single additional renal artery, situated from the aorta to the lower segment of the kidney, was observed in 8 (72.7{\%}) patients; dual additional renal arteries with equivalent caliber trunks were observed in 3 (27.3{\%}) patients. An additional renal artery occurred more often in women in 6 (54.5{\%}) donors. Concomitant renal pathology was detected in 3 (9.3{\%}) of 32 donors: simple cysts in 2 donors and hydro nephrosis transformation in 1 donor. These 3 cases represented an accidental discovery and were therefore excluded from the list of donors. In addition, all donors underwent excretory-phase computed tomography, and their renal function and urinary collecting system results were evaluated. Two recipients with graft dysfunction presented with decreased venous return and delayed arterial filling of the renal arteries that manifested as delayed contrast in the kidney graft medulla. Renal parenchymal ischemic zones were consistent with microvasculature thrombosis, the most common cause of vascular complications in these recipients. Conclusions: Multiphase computed tomography angiography is a necessary tool for assessing the structure and condition of vascular architecture in kidney donors and recipients. Individuals with ambiguous Doppler results, this test should be required; it is also warranted when renal graft vascular complications are suspected.",
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