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Prevalence of microhematuria in renal colic and urolithiasis: a systematic review and meta-analysis

Authors
  • Minotti, Bruno1
  • Treglia, Giorgio2
  • Pascale, Mariarosa3
  • Ceruti, Samuele4
  • Cantini, Laura5
  • Anselmi, Luciano5
  • Saporito, Andrea5
  • 1 Cantonal Hospital of St. Gallen, Rorschacher Strasse 95, St. Gallen, CH-9007, Switzerland , St. Gallen (Switzerland)
  • 2 Heath Technology Assessment Unit, Ente Ospedaliero Cantonale, Bellinzona, Switzerland , Bellinzona (Switzerland)
  • 3 Clinical Trial Unit, Ente Ospedaliero Cantonale, Bellinzona, Switzerland , Bellinzona (Switzerland)
  • 4 Clinica Luganese, Lugano, Switzerland , Lugano (Switzerland)
  • 5 Ospedale San Giovanni, Bellinzona, Switzerland , Bellinzona (Switzerland)
Type
Published Article
Journal
BMC Urology
Publisher
Springer (Biomed Central Ltd.)
Publication Date
Aug 08, 2020
Volume
20
Issue
1
Identifiers
DOI: 10.1186/s12894-020-00690-7
Source
Springer Nature
Keywords
License
Green

Abstract

BackgroundThis systematic review and meta-analysis aims to investigate the prevalence of microhematuria in patients presenting with suspected acute renal colic and/or confirmed urolithiasis at the emergency department.MethodsA comprehensive literature search was conducted to find relevant data on prevalence of microhematuria in patients with suspected acute renal colic and/or confirmed urolithiasis. Data from each study regarding study design, patient characteristics and prevalence of microhematuria were retrieved. A random effect-model was used for the pooled analyses.ResultsForty-nine articles including 15′860 patients were selected through the literature search. The pooled microhematuria prevalence was 77% (95%CI: 73–80%) and 84% (95%CI: 80–87%) for suspected acute renal colic and confirmed urolithiasis, respectively. This proportion was much higher when the dipstick was used as diagnostic test (80 and 90% for acute renal colic and urolithiasis, respectively) compared to the microscopic urinalysis (74 and 78% for acute renal colic and urolithiasis, respectively).ConclusionsThis meta-analysis revealed a high prevalence of microhematuria in patients with acute renal colic (77%), including those with confirmed urolithiasis (84%). Intending this prevalence as sensitivity, we reached moderate values, which make microhematuria alone a poor diagnostic test for acute renal colic or urolithiasis. Microhematuria could possibly still important to assess the risk in patients with renal colic.

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