{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T20:28:40Z","timestamp":1787776120751,"version":"build-2784847793"},"reference-count":8,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"5","license":[{"start":{"date-parts":[[2025,5,21]],"date-time":"2025-05-21T00:00:00Z","timestamp":1747785600000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2025,9]]},"abstract":"<jats:title>\n                    A\n                    <jats:sc>BSTRACT<\/jats:sc>\n                  <\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Hydronephrosis is the most common congenital anomalies of the urinary tract. There are various diagnostic modalities which are currently used for diagnosis and follow-up such as ultrasound, renal scintigraphy, intravenous urography, and magnetic resonance urography. Renal arterial Doppler resistance index can be used as a complimentary tool.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>A prospective observational study of 30 infants and children with unilateral hydronephrosis were selected using consecutive sampling. Ultrasonography with renal biometry for diagnosis and Technetium 99m-diethylene triamine penta-acetic acid (99mTc-DTPA) Renogram was used for functional assessment. Doppler ultrasonography was done in all on to determine mean resistive index in each subject.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Altogether 30 patients have been studied in this series, out of which 7 are females and 23 males. Fourteen patients had left-sided ureteropelvic junction (UPJ) obstruction and 16 had right-sided UPJ obstruction. Operative procedure (Anderson\u2013Hyne\u2019s pyeloplasty) was done in all 30 patients. Preoperatively differential renal function was assessed by renal scintigraphy using 99 mTc-DTPA and Doppler ultrasonography done to measure renal resistive index (RRI). In this study, in preoperative group mean peak systolic velocity (PSV) \u2013 52.663 cm\/s, mean end diastolic velocity (EDV) \u2013 10.305 cm\/s, mean RRI \u2013 0.797, mean DTPA \u2013 43.630. In the postoperative period after 3 months, mean PSV \u2013 41.223, mean EDV \u2013 14.640, mean DTPA \u2013 47.449, and mean RRI \u2013 0.638.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>This study has shown that the mean renal arterial resistive index was higher (mean RRI \u2013 0.797) in preoperative period and decreased after intervention (mean RRI \u2013 0.638). These values correlate well with DTPA result. Hence, this is a reliable tool for diagnosis and follow-up after intervention.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/jiaps.jiaps_15_25","type":"journal-article","created":{"date-parts":[[2025,5,21]],"date-time":"2025-05-21T06:00:20Z","timestamp":1747807220000},"page":"584-588","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Importance of Renal Resistive Index as a Prognostic Marker in Unilateral Hydronephrosis Due to Ureteropelvic Junction Obstruction"],"prefix":"10.4103","volume":"30","author":[{"given":"Dutta","family":"Purnendu","sequence":"first","affiliation":[{"name":"Department of Pediatric Surgery, Burdwan Medical College and Hospital, Kolkata, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shibsankar","family":"Barman","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, IPGME&R, SSKM Hospital, Kolkata, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Halder","family":"Sudeshna","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, IPGME&R, SSKM Hospital, Kolkata, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mondal","family":"Biswajit","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, IPGME&R, SSKM Hospital, Kolkata, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarkar","family":"Ruchirendu","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, IPGME&R, SSKM Hospital, Kolkata, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Biswas Sumitra","family":"Kumar","sequence":"additional","affiliation":[{"name":"Professor and Ex-Head of the Department, Department of Pediatric Surgery, NRS Medical College and Hospital, Kolkata, West Bengal, India"},{"name":"At Present President, 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