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Internal drainage (DJ stent) to predict recovery potential of poorly functioning kidney prior to pyeloplasty

  • Author Footnotes
    1 RB and VVSC designed/conceived the study.
    Ramesh Babu
    Correspondence
    Correspondence to: Dr. Ramesh Babu, Pediatric Urology Unit, Sri Ramachandra Medical College and Research Institute, Porur, Chennai 600116, India.
    Footnotes
    1 RB and VVSC designed/conceived the study.
    Affiliations
    Pediatric Urology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India
    Search for articles by this author
  • Author Footnotes
    1 RB and VVSC designed/conceived the study.
    V.V.S. Chandrasekharam
    Footnotes
    1 RB and VVSC designed/conceived the study.
    Affiliations
    Pediatric Surgery, Pediatric Urology and MAS, Ankura Hospitals for Women and Children, Hyderabad, Telangana, India
    Search for articles by this author
  • Author Footnotes
    1 RB and VVSC designed/conceived the study.
Published:January 13, 2023DOI:https://doi.org/10.1016/j.jpurol.2022.11.031
      We read with interest the article by Abbas et al. [
      • Abbas T.
      • Elifranji M.
      • Al-Salihi M.
      • Ahmad J.
      • Vallasciani S.
      • Elkadhi A.
      • et al.
      Functional recoverability post-pyeloplasty in children with ureteropelvic junction obstruction and poorly functioning kidneys: systematic review.
      ] on functional recoverability in poorly functioning kidney (PFK) with uretero pelvic junction obstruction (UPJO) following pyeloplasty. The authors have included all units with less than 30% differential renal function (DRF), whereas the actual controversy lies in those with <10% DRF. Sarhan et al. [
      • Sarhan O.
      • Al Otay A.
      • Al Faddagh A.
      • El Helaly A.
      • Al Hagbani M.
      • Al Ghanbar M.
      • et al.
      Pyeloplasty in children with low differential renal function: functional recoverability.
      ] have reported good recovery in units with <20% DRF, however the median age in their study was only 2 years. We have earlier shown that infants demonstrated better functional recovery following pyeloplasty [
      • Chandrasekharam V.V.S.
      • Babu R.
      • Arlikar J.
      • Satyanarayana R.
      • Murali Krishna N.
      Functional outcomes of pediatric laparoscopic pyeloplasty: post-operative functional recovery is superior in infants compared to older children.
      ,
      • Babu R.
      • Rathish V.R.
      • Sai V.
      Functional outcomes of early versus delayed pyeloplasty in prenatally diagnosed pelvi-ureteric junction obstruction.
      ]. The authors have not done sub group analysis of the age and many who recovered in <10% group might have been infants.
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      References

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        • Elifranji M.
        • Al-Salihi M.
        • Ahmad J.
        • Vallasciani S.
        • Elkadhi A.
        • et al.
        Functional recoverability post-pyeloplasty in children with ureteropelvic junction obstruction and poorly functioning kidneys: systematic review.
        J Pediatr Urol. 2022; https://doi.org/10.1016/j.jpurol.2022.07.009
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