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Predictors of surgical intervention following initial surveillance for acute ureteric colic

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AbstractPurposeTo identify clinical and stone-related factors predicting the need for surgical intervention in patients who were clinically considered appropriate for non-surgical intervention.Patients and methodsWe conducted a retrospective review of a… Click to show full abstract

AbstractPurposeTo identify clinical and stone-related factors predicting the need for surgical intervention in patients who were clinically considered appropriate for non-surgical intervention.Patients and methodsWe conducted a retrospective review of a contemporary cohort of patients who were selected for surveillance following presentation with acute ureteric colic. Data on patient demographic and stone variables, inpatient management and long-term outcomes were evaluated. Multivariate logistic regression was used to generate a nomogram predicting need for surgical intervention. The accuracy of the nomogram was subsequently validated with an independent cohort of patients presenting with ureteric colic. ResultsOf 870 study eligible patients presenting with acute ureteric colic, 527 were initially treated non-surgically and included in the analysis. 113 of these eventually required surgical intervention. Median time from first presentation to acute surgery was 11 (IQR 4–82) days. In our final MVA analysis, duration of symptoms more than 3 days, not receiving alpha-blockers, positive history of previous renal calculi and stone location, burden and density were independent predictors of need for surgical intervention. Patients who required opioid analgesia were more likely to have surgical intervention; however, this did not reach statistical significance. The area under the curve (AUC) of the final model was 0.802. The nomogram was validated with a cohort of 210 consecutive colic patients with AUC of 0.833 (SE 0.041, p < 0.001). ConclusionsWe have identified independent predictors of the need for surgical intervention during an episode of renal colic and formulated a nomogram. Combined with the diligent use of acute ureteroscopy at our centre, this nomogram may have clinical utility when making decisions regarding treatment options with potential healthcare cost savings.

Keywords: intervention; surveillance; acute ureteric; surgical intervention; need surgical; ureteric colic

Journal Title: World Journal of Urology
Year Published: 2018

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