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Submitted: 03 Mar 2018
Accepted: 14 May 2019
First published online: 31 May 2019
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J Nephropharmacol. 2019;8(2): e27.
doi: 10.15171/npj.2019.27
  Abstract View: 112
  PDF Download: 153

Original

The role of 99mTc dimercaptosuccinic acid scintigraphy in detection of vesicoureteral reflux in pediatrics with first episode of acute pyelonephritis

Mohsen Akhavan Sepahi 1,2 ORCID logo, Mohammad Reza Razavi 1,2, Mojtaba Sabahi Fakher 2, Zahra Movahedi 2,3 *

1 Department of Pediatric Nephrology, Qom University of Medical Sciences and Health Services, Qom, Iran
2 Pediatric Clinical Research of Development Center, Hazrat Masoomeh Hospital, Qom University of Medical Sciences and Health Services, Qom, Iran
3 Department of Pediatric Infectious disease, School of Medicine, Qom University of Medical Sciences and Health Services, Qom, Iran
*Corresponding author: Zahra Movahedi, Email: Email: movahedizahra7@gmail.com

Abstract

Introduction: Acute pyelonephritis is a common disease in children leading to permanent renal function impairment due to renal scarring with the risk of later hypertension.

Objectives: The aim of this study was to assess the role of initial 99mTc dimercaptosuccinic acid (DMSA) scintigraphy for detecting the early renal parenchymal damage in children with the first episode of acute pyelonephritis (APN).

Patients and Methods: This study was conducted among 161 hospitalized children with the first clinically episode of APN from January 2008 to April 2013 in pediatric clinical research of development center in Qom, Iran. DMSA renal scintigraphy, ultrasonography (US), erythrocyte sedimentation rate (ESR), urine analysis and culture were performed in all patients. DMSA renal scan and voiding cystourethrogram(VCUG) was done within 15 days and one month after the diagnosis of APN using the standard protocol, respectively. Results: Children with the first episode of acute pyelonephritis aged 1 month to 12 years were enrolled in this study. There were no statistically significant correlations between initial decreased uptake detected by DMSA renal scan with age, gender, body temperature, CRP levels or ESR. The positive and negative predictive values (PPV, NPV) of diminished uptake on DMSA renal scans for detecting the presence of VUR on VCUG were (43.2%) and (93.3%), respectively.

Conclusion: Children with a normal DMSA renal scan during their the first episode of UTI rarely have VUR. Avoidance of VCUG in children with negative DMSA renal scans could significantly eliminate the use of this potentially traumatic test.

Keywords: Acute pyelonephritis, Urinary tract infection Tc99m DMSA scan, Voiding cystourethrogram

Implication for health policy/practice/research/medical education:

DMSA (99mTc dimercaptosuccinic acid) renal scintigraphy should be considered as a gold standard method for evaluating the pediatric urinary tract infection. Therefore voiding cystourethrogram should be recommended only in patients with abnormal DMSA scan.

Please cite this paper as: Akhavan Sepahi M, Razavi MR, Sabahi Fakher M, Movahedi Z. The role of 99mTc dimercaptosuccinic acid scintigraphy in detection of vesicoureteral reflux in pediatrics with first episode of acute pyelonephritis. J Nephropharmacol. 2019;8(2):e27. DOI: 10.15171/npj.2019.27

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