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Erschienen in: Wiener klinische Wochenschrift 11-12/2015

01.06.2015 | original article

The accuracy of urinary ultrasound in the diagnosis of urinary stone disease in patients with acute flank pain: is it influenced by the time of ultrasound performance during the day or week?

verfasst von: MD Mustafa Resorlu, MD Mohamed Ismat Abdulmajed, MD Eylem Burcu Resorlu, MD Can Ates, MD Fatma Uysal, MD Gurhan Adam, MD Nilufer Aylanc, MD Sibel Cevizci, MD Alpaslan Akbas, MD Eyup Burak Sancak, MD Murat Tolga Gulpinar

Erschienen in: Wiener klinische Wochenschrift | Ausgabe 11-12/2015

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Summary

Background

The aim of this article is to investigate the possible impact of timing of ultrasound (US) during the day or week on its diagnostic accuracy.

Methods

We analyzed the records of 500 patients who underwent an initial urinary US, followed by a noncontrast computed tomography (NCCT) for the assessment of urinary stone disease. The sensitivity, specificity, negative and positive predictive values, negative and positive likelihood ratio, and overall diagnostic accuracy rates of US and were analyzed at different times of the day or week.

Results

The specificity and diagnostic accuracy of urinary US showed a decline toward the middle of the week followed by a steady rise by the end of the week, higher sensitivity for urinary US was noticed around mid-week. On the other hand, when urinary US results are subgrouped according to the time of the day they are performed, the specificity remained generally stable but the sensitivity and diagnostic accuracy showed lowest levels between 11:00 a.m. and 02:00 p.m. and between 04:00 p.m. and 05:00 p.m. Although some observational differences between sensitivity, specificity, and diagnostic accuracy of urinary US performed at different times of the day or week are seen, these differences were not statistically significant.

Conclusions

Our study showed no significant influence of US timing on its diagnostic accuracy. A larger randomized prospective series is necessary to evaluate the impact of different factors on “precision” and “accuracy” in US reporting and, hence, the diagnostic accuracy of urinary US in identifying urinary stone disease.
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Metadaten
Titel
The accuracy of urinary ultrasound in the diagnosis of urinary stone disease in patients with acute flank pain: is it influenced by the time of ultrasound performance during the day or week?
verfasst von
MD Mustafa Resorlu
MD Mohamed Ismat Abdulmajed
MD Eylem Burcu Resorlu
MD Can Ates
MD Fatma Uysal
MD Gurhan Adam
MD Nilufer Aylanc
MD Sibel Cevizci
MD Alpaslan Akbas
MD Eyup Burak Sancak
MD Murat Tolga Gulpinar
Publikationsdatum
01.06.2015
Verlag
Springer Vienna
Erschienen in
Wiener klinische Wochenschrift / Ausgabe 11-12/2015
Print ISSN: 0043-5325
Elektronische ISSN: 1613-7671
DOI
https://doi.org/10.1007/s00508-015-0728-4