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. 2021 May 1;42(5):469-475.
doi: 10.1097/MNM.0000000000001359.

Prognostic value of dynamic renal scan with 99mTc-EC in patients with kidney transplantation: a prospective descriptive study

Maryam Arefnia  1 , Navid Masoumi  2 , Mohammad Ali Ghodsirad  1 , Erfan J Moghaddam  3 , Elinaz Hosseinzadeh  1 , Mahtab Hojjati  1
Affiliations

Prognostic value of dynamic renal scan with 99mTc-EC in patients with kidney transplantation: a prospective descriptive study

Maryam Arefnia et al. Nucl Med Commun. .

Abstract

Introduction: Renal transplantation is the gold standard treatment for chronic kidney disease. Renal scintigraphy has been performed widely to evaluate postsurgical complications of transplantation, but there are little data regarding 99mTc-EC scintigraphy in kidney transplantation.

Methods and materials: This was a prospective descriptive study. All patients who underwent kidney transplantation and passed an uneventful postoperative period entered the study. Demographic characteristics, including age, gender, biochemical parameters before and after the transplantation and 99mTc-EC parameters including time to max, time to ½ max, slope from max to ½ max, upslope time interval and time to 2/3 max as well as episodes of rejection, were recorded. Patients were then followed up for 1 year at 3-, 6-, 9- and 12-month intervals.

Results: Forty-one patients who underwent renal transplantation entered the study. Mean ± SD age of patients was 40.65 ± 12.84 years (min 17 and max 74 years). In total, 25% (10) of patients experienced one or two episodes of rejection and were hospitalized. Time of max, time of 1/2 max, time from max to 1/2 max, time of 2/3 max, time from max to 2/3 max and upslope time interval had a significant association with transplant rejection using a Cox regression model. With 1-min increase in time of max, the risk of rejection increased by 27% (hazard ratio = 1.27; CI, 1.03--1.56) and with 1-min increase in time of 1/2 max, the risk of rejection increased by 28% (hazard ratio = 1.28; CI, 1.14-1.45).

Discussion: 99mTc-EC renal scintigrahpy was able to predict kidney transplantation rejection in our patients. 99mTc-EC renal scintigrahpy is beneficial to evaluate transplant kidney function to prevent complications and helps close follow-up.

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