Rud, Oleg and Moersler, Johannes and Peter, Julia and Waliszewski, Przemyslaw and Gilfrich, Christian and Haeuser, Hannes and Burger, Maximilian and Fritsche, Hans-Martin and Wieland, Wolf F. and Ahmed, Ali M. and Brookman-May, Sabine and May, Matthias (2012) Prospective evaluation of interobserver variability of the hydronephrosis index and the renal resistive index as sonographic examination methods for the evaluation of acute hydronephrosis. BJU INTERNATIONAL, 110 (8B). E350-E356. ISSN 1464-4096,
Full text not available from this repository. (Request a copy)Abstract
OBJECTIVE To confirm the reliability of assessements of the renal resistive index (RRI) and the hydronephrosis index (HI) comprising two sonographic techniques providing additional information in patients with acute renal colic. PATIENTS AND METHODS Sonographic measurement of hydronephrosis and assessment of common clinical criteria was performed in 22 consecutive patients presenting with unilateral stone-related renal colic. RRI and HI were separately recorded by two investigators within a prospective study. Interobserver agreement and comparison of sonographic with computed tomography (CT) findings were assessed with the Cohen's kappa statistic (kappa) for attributive ordinal characteristics and Spearman's rank correlation/rho (rho) for attributive metric characteristics. RESULTS There was a significant correlation between HI and the sonographically-evaluated grade of hydronephrosis, although not between RRI and the grade of hydronephrosis. For all procedures (RRI, HI, sonography and CT), significant differences between the symptomatic and the asymptomatic kidney were assessed. Interobserver agreement was excellent for the grade assessment of hydronephrosis by conventional sonography (kappa = 0.82; P < 0.001), good to very good for HI (rho = 0.60; P = 0.003) and acceptable to good for RRI (rho = 0.49; P = 0.021). CONCLUSIONS The RRI and HI methods are both easily practicable as stageless examination methods in patients presenting with stone-related renal colic, and both also reliably distinguish between obstruction and non-obstruction. Exact thresholds for both methods must still be defined based on further successive studies. Additionally, changes of values under medical expulsive therapy and correlation with the functional status of the obstructed kidney remain to be examined.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DUPLEX-DOPPLER SONOGRAPHY; URINARY-TRACT OBSTRUCTION; COMPUTED-TOMOGRAPHY; POTENTIAL ROLE; ULTRASOUND; ULTRASONOGRAPHY; DIAGNOSIS; UROPATHY; KIDNEYS; PAIN; acute hydronephrosis; acute renal colic; hydronephrosis index; interobserver variability; renal resistive index; urolithiasis |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Urologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 May 2020 11:37 |
| Last Modified: | 05 May 2020 11:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/18041 |
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