Evaluation of Kidney Graft's Fibrosis With Real Time Shear-wave Elastography (Elastogreffe)

Regional University Hospital Center (CHRU)

Status: Completed

Conditions: Kidney Graft

Study type: Observational

Funder types: Other

Identifiers

NCT03819400

RIPH3-RNI18-Elastogreffe

Details and patient eligibility

About

Kidney graft's fibrosis is correlated with prognostic of kidney's graft, wathever the initial etiology. Actually, that evaluation is based on histologic score of Banff FI/AT (0 to III). It is obtained thanks to punction-biopsy, which is invasive and can lead complications. This exam is systematic on M3 of the transplantation.

Tissue's fibrosis is a proliferation of extracellular matrix, leading to an increase of fibrosed tissue rigidity.

Elastography is an ultrasound technique allowing evaluation of tissues' rigidity.

The purpose is the validation of elastograhpy, innovative and non -invasive technique, and more specifically Shear Wave Elastography (SWE). For this, strain ratio (SR) could improve intra-operator variability and estimate fibrosis' degree of kidney's graft.

Full description

Kidney graft's fibrosis is correlated with prognostic of kidney's graft, wathever the initial etiology. Actually, that evaluation is based on histologic score of Banff FI/AT (0 to III). It is obtained thanks to punction-biopsy, which is invasive and can lead complications. This exam is systematic on M3 of the transplantation.

Tissue's fibrosis is a proliferation of extracellular matrix, leading to an increase of fibrosed tissue rigidity.

Elastography is an ultrasound technique allowing evaluation of tissues' rigidity.

The purpose is the validation of elastograhpy, innovative and non -invasive technique, and more specifically Shear Wave Elastography (SWE). For this, strain ratio (SR) could improve intra-operator variability and estimate fibrosis' degree of kidney's graft.

Enrollment: 45 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Kidney-transplanted patient, whatever kind of organ donation ( alive donor, deceased donor included extended criteria Maastricht 2 or 3)
• More than 18 years-old

Exclusion criteria

• Dual kidney graft

• Hydronephrosis / urinary obstacle

• Pathologies with an intrinsic compression on the graft

• Stenosis hemodynamically significant of graft artery (lengthening of Systolic Ascent Time > 70 ms)

• Contra-indication to systematical punction-biopsy on Month 3 :

  • Ischemia of post-transplanted graft
  • Alive donor HLA identical
  • Hemostasis disorder or unable to stop antiaggregant or anticoagulant
  • Hydronephrosis / urinary obstacle

• Opposition to use the data