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Vol. 35. Issue 4.
Pages 218-224 (January 2011)
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Vol. 35. Issue 4.
Pages 218-224 (January 2011)
Original article
Study on the findings of an immediate renal gammagraphy and its effect on the survival of a kidney graft
Estudio de los hallazgos de la gammagrafía renal inmediata y su influencia en la supervivencia del injerto renal
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J.F. Barbaa,
Corresponding author
javiferbar@hotmail.com

Corresponding author.
, L. Romeroa, E. Tolosaa, R. Algarraa, D. Rosella, J.E. Roblesa, J.J. Zudairea, J.M. Beriana, J.A. Richterb, J.I. Pascuala
a Departamento de Urología, Clínica Universidad de Navarra, Navarra, Spain
b Departamento de Medicina Nuclear, Clínica Universidad de Navarra, Navarra, Spain
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Abstract
Introduction

We assessed the effect of the findings of the renal gammagraphy (99mTc-DTPA) taken in the first 24 hours after the transplant in the survival of the kidney transplant.

Materials and method

We retrospectively studied 413 kidney transplants carried out between January 1994 and December 2008, with emphasis on normal gammagraphic findings or alterations in the vascular, parenchymal and excretory stages, as well as their effect on graft survival.

Results

Of the 413 transplants, 44 (10.7%) presented alterations in the vascular stage, 256 (62%) in the parenchymal stage and 269 (65.1%) in the excretory stage. The mean follow-up of the entire group was 72.5 months (±54.1 DE). The univariate analysis shows that graft survival is significantly lower in patients with alterations in the vascular stage (OR: 3; IC 95% 1.9–4.9 p<0.001), in the excretory stage (OR: 2.5; IC 95% 1.5–4; p=<0.001) and in the parenchymal stage (OR: 2.21; IC 95% 1.3–3.36; p=0.001). The multivariate studies of the gammagraphic variables that affect the survival of the graft show that the presence of alterations in the vascular stage (OR: 3; IC 95% 1.9–4.9; p<0.001) and in the parenchymal stage (OR: 2; IC 95% 1.2–3.3; p=0.005) is directly related to survival. This data is also confirmed by means of the observed survival rate analysis of the graft at 3 and 5 years.

Conclusions

The presence of alterations in the vascular stage and in the parenchymal stage of the renal gammagraphy immediately after the transplant signifies variables that affect graft survival.

Keywords:
Kidney transplant
Renal Gammagraphy
Graft
Resumen
Introducción

Se valora la influencia de los hallazgos de la gammagrafía renal (99mTc-DTPA) realizada en las primeras 24 horas postrasplante en la supervivencia del injerto renal.

Material y método

Analizamos retrospectivamente 413 trasplantes renales realizados entre enero 1994 y diciembre 2008, con énfasis en los hallazgos gammagráficos de normalidad o alteración en las fases vascular, parenquimatosa y excretora, así como su influencia sobre la supervivencia del injerto.

Resultados

De los 413 trasplantes 44 (10,7%) presentaron alteraciones en la fase vascular, 256 (62%) en la fase parenquimatosa y 269 (65,1%) en la fase excretora. La media de seguimiento de todo el grupo fue 72,5 meses (±54,1 DE). El análisis univariante revela que la supervivencia del injerto es significativamente menor en los pacientes con alteraciones en la fase vascular (OR: 3; IC 95%: 1,9–4,9; p<0,001), en la fase excretora (OR: 2,5; IC 95%: 1,5–4; p<0,001) y en la fase parenquimatosa (OR: 2,21; IC 95%: 1,3–3,36; p=0,001). El estudio multivariante de las variables gammagráficas influyentes en la supervivencia del injerto pone de manifiesto que la presencia de alteraciones en la fase vascular (OR: 3; IC 95%: 1,9–4,9; p<0,001) y en la fase parenquimatosa (OR: 2; IC 95%: 1,2–3,3; p=0,005) se relacionan directamente con la supervivencia. Estos datos se confirman también mediante análisis de supervivencia actuarial del injerto a 3 y 5 años.

Conclusiones

La presencia de alteraciones en la fase vascular y en la fase parenquimatosa de la gammagrafía renal inmediata postrasplante son variables que afectan la supervivencia del injerto.

Palabras clave:
Trasplante renal
Gammagrafía renal
Injerto

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