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Bispebjerg Hospital - en del af Københavns Universitetshospital
Udgivet

Surgical interventions for nephrolithiasis in ankylosing spondylitis and the general population

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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  • Ane Krag Jakobsen
  • Lennart T H Jacobsson
  • Oliver Patschan
  • T Hopfgarten
  • J. Askling
  • L E Kristensen
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OBJECTIVE: The aim of this study was to estimate rates and type of definitive surgical interventions for nephrolithiasis in Swedish patients with ankylosing spondylitis (AS) compared to the general population.

MATERIALS AND METHODS: This national prospective cohort study linked data from Swedish population and healthcare registries. Incidence rates and interventions for nephrolithiasis during follow-up in patients with AS were compared to general population comparator (GPC) subjects.

RESULTS: In total, 8572 AS patients were followed for 49,959 person-years and 39,639 matched GPCs were followed for 225,221 person-years. Mean age at study entry was 46 years [interquartile range (IQR) 36-56 years] and 65% were male. In AS patients with a diagnosis of nephrolithiasis during the study period, 29% (72/250) underwent similar intervention for nephrolithiasis compared to 24% (114/466) GPCs (p = 0.21). The incidence rate ratio (RR) in overall AS patients was 2.9 [95% confidence interval (CI) 2.1-3.8] during a median follow-up of 6.2 years (IQR 3.2-8.6 years). With prior diagnosis of nephrolithiasis, the RR for AS patients compared to GPCs was 3.7 (95% CI 1.8-7.7); without prior nephrolithiasis the RR was 2.1 (95% CI 1.5-3.0). Increasing age [odds ratio (OR) 1.02, 95% CI 1.01-1.03], prior nephrolithiasis diagnosis (OR 3.3, 95% CI 1.97-5.62) and atherosclerotic cardiac disease (OR 2.0, 95% CI 1.03-3.91) were identified as predictors of intervention for nephrolithiasis.

CONCLUSIONS: Patients with AS have an almost three-fold increased risk of surgical intervention for kidney stones, with similar management, compared to the general population.

OriginalsprogEngelsk
TidsskriftScandinavian Journal of Urology
Vol/bind49
Udgave nummer6
Sider (fra-til)1-6
Antal sider6
ISSN2168-1805
DOI
StatusUdgivet - 21 sep. 2015

ID: 50635500