Currently, contrast-induced kidney injury cannot be diagnosed on the day of cardiac catheterization. Recently, proenkephalin (penKid) was introduced as a new glomerular filtration marker. The aim of this study is to investigate whether the change in penKid level allows for early detection of affected patients.
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Sustained kidney injury
Timeframe: Time period between the two time-points: immediately before catherization and 4-8 weeks after discharge