{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T22:52:29Z","timestamp":1777589549444,"version":"3.51.4"},"reference-count":21,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2020,8,1]],"date-time":"2020-08-01T00:00:00Z","timestamp":1596240000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Endourology"],"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives:<\/jats:title>\n                    <jats:p>To compare direct ureteral length measurements with predictive formulas used for the preoperative assessment of ureteral length, and to evaluate patient factors that impact the accuracy of these predictive formulas.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Patients undergoing ureteral stenting for benign and malignant indications were included. Clinical factors analyzed were gender, race, height, weight, prior abdominal or pelvic surgery, radiation therapy, pelvic organ prolapse (POP), laterality, hydronephrosis, and pre-existing ureteral stent. Three predictive formulas and a common height-based formula were used. Direct ureteral measurements were obtained with a ruled 5F ureteral catheter. Predictive formulas were compared with direct ureteral measurements using scatterplot and Spearman's correlation coefficient. Univariate and multivariate logistic regressions were used to evaluate patient factors associated with \u22652\u2009cm deviation from direct ureteral measurements.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      A total of 108 patients (134 ureters) were analyzed. All predictive formulas correlated poorly with direct ureteral measurements, although as much as 60% of ureteral stent lengths were accurately predicted. Several patient factors significantly impacted accuracy of formulas: male gender (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009=\u20090.04), POP (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009=\u20090.05), body mass index (BMI) \u226525 (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009=\u20090.03), and pre-existing ureteral stent (\n                      <jats:italic toggle=\"yes\">p<\/jats:italic>\n                      \u2009=\u20090.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Our study suggests that predictive formulas for ureteral stent length have poor accuracy when compared to direct measurement, especially for patients with elevated BMI and POP. Our institution considers direct ureteral measurement the gold standard for determining ureteral stent length\u2014a method that is universally applicable and independent of patient factors.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1089\/end.2020.0066","type":"journal-article","created":{"date-parts":[[2020,4,22]],"date-time":"2020-04-22T04:34:26Z","timestamp":1587530066000},"page":"805-810","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":2,"title":["Evaluation of Patient Factors That Influence Predictive Formulas for Determining Ureteral Stent Length When Compared to Direct Measurement"],"prefix":"10.1177","volume":"34","author":[{"given":"Jennifer","family":"Kuo","sequence":"first","affiliation":[{"name":"Department of Urology, University of Florida College of Medicine, Gainesville, Florida, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrew","family":"Rabley","sequence":"additional","affiliation":[{"name":"Department of Urology, University of Florida College of Medicine, Gainesville, Florida, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paula","family":"Domino","sequence":"additional","affiliation":[{"name":"Department of Urology, University of Florida College of Medicine, Gainesville, Florida, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brandon","family":"Otto","sequence":"additional","affiliation":[{"name":"Department of Urology, University of Florida College of Medicine, Gainesville, Florida, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Meredith Louis","family":"Moy","sequence":"additional","affiliation":[{"name":"Department of Urology, University of Florida College of Medicine, Gainesville, Florida, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vincent G.","family":"Bird","sequence":"additional","affiliation":[{"name":"Department of Urology, University of Florida College of Medicine, Gainesville, Florida, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2020,8,1]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(17)63130-6"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1053\/crad.2001.0737"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0929-6646(10)60130-1"},{"key":"e_1_3_3_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(01)66539-X"},{"key":"e_1_3_3_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5347(05)65858-2"},{"key":"e_1_3_3_7_2","doi-asserted-by":"publisher","DOI":"10.1089\/end.2007.9949"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1089\/08927790152596352"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.4111\/kju.2015.56.5.370"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1464-410X.2012.11388.x"},{"key":"e_1_3_3_11_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1464-410X.2007.06757.x"},{"key":"e_1_3_3_12_2","doi-asserted-by":"publisher","DOI":"10.1089\/end.2013.0041"},{"key":"e_1_3_3_13_2","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1186\/s12894-016-0189-8","article-title":"Developing a preoperative predictive model for ureteral length for ureteral stent insertion","volume":"16","author":"Kawahara T","year":"2016","unstructured":"Kawahara T, , Sakamaki K, , Ito H, et al. 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