Evidence map›Paper›PMID 26191099›Full record

ArticleJournal of ultrasound2015

Drainage-related ultrasonography (DRUS): a novel technique for discriminating obstructive and nonobstructive hydroureters in children.

Abdol-Mohammad Kajbafzadeh, Mehrzad Mehdizadeh, Zahra Aryan, Maryam Ebadi, Shadi Abdar Esfahani, Laleh Montaser-Kouhsari, Azadeh Elmi, Saman Shafaat Talab, Zhina Sadeghi

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Article in Journal of ultrasound, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

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1 citing paper in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Abdol-Mohammad KajbafzadehPediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, No. 32, 2nd Floor, 7th Street Saadat-Abad Ave, Tehran, 1998714616 Iran.
Mehrzad MehdizadehPediatric Radiology Department, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran.
Zahra AryanPediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, No. 32, 2nd Floor, 7th Street Saadat-Abad Ave, Tehran, 1998714616 Iran.
Maryam EbadiPediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, No. 32, 2nd Floor, 7th Street Saadat-Abad Ave, Tehran, 1998714616 Iran.
Shadi Abdar EsfahaniDepartment of Radiology, Harvard Medical School, Massachusetts General Hospital, Boston, MA USA.
Laleh Montaser-KouhsariPediatric Urology Research Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, No. 32, 2nd Floor, 7th Street Saadat-Abad Ave, Tehran, 1998714616 Iran.
Azadeh ElmiDivision of Abdominal Imaging and Interventional Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, White 270, Boston, MA 02114 USA.
Saman Shafaat TalabDivision of Abdominal Imaging and Interventional Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, White 270, Boston, MA 02114 USA.
Zhina SadeghiDepartment of Urology, University Hospitals of Case Medical Center, Case Western Reserve University, Cleveland, OH 44106 USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDespite advances in urologic imaging, the paucity of an optimal technique that accurately clarifies obstructive and nonobstructive hydroureter exists.

objectiveThis study was conducted to introduce a novel and modified ultrasonographic technique, known as drainage-related ultrasonography (DRUS), discriminating obstructive and nonobstructive, nonrefluxing hydroureter. MATERIALS AND

methodsA total of 358 children (mean age, 3.7 years) with 418 nonrefluxing hydroureter were included. These children were composed of two groups of obstructive nonrefluxing (141 children with 157 dilated ureters) and nonobstructive, nonrefluxing (217 children with 261 hydroureter). The definite diagnosis regarding the subtype of hydroureter was derived from appropriate investigation. The maximum diameter of the dilated ureter, which was observed on ultrasonography, was recorded before and after 3 h of catheterization, as D1 and D2, respectively. To assess the D ratio, a formula was developed, that is, [(|D1 - D2|)/D1] × 100. Values were recorded and cutoff points were set to discriminate between subtypes.

resultsObstructive versus nonobstructive subtypes of nonrefluxing hydroureter were clarified with 78.5 % sensitivity and 83.4 % specificity, by setting a cutoff point of 22 % for the D ratio. Regardless of the cutoff point assigned to the reduction in D (D2 compared with D1), DRUS revealed 93.9 % sensitivity, 80.6 % specificity, 63.2 % positive predictive value, and 97.4 % negative predictive value in discriminating upper from lower obstruction.

conclusionDRUS affords favorable results in terms of differentiating between obstructive and nonobstructive, nonrefluxing hydroureter, as well as between upper and lower obstruction in obstructive cases. It has the potential to become an efficient imaging modality in the diagnostic algorithm of hydroureter.

Indexed as

DrainageHydroureterRadioisotope renographyTechnetium-99 m DTPAUrinary bladderUrinary tract obstruction

Identifiers

PMID26191099
PMCPMC4504862

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