NCT01318746

The Circadian Rhythm of Potassium and Cystatin C

The Circadian Rhythm of Potassium and Cystatin c and the Day-to-day Variability

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 30 (actual)
• Sponsor: University of Erlangen-Nürnberg Medical School · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

The potassium value is important to prevent cardiac arrhythmias and sudden cardiac death. In patients with renal failure, the potassium value is not stable and tends to raise. Until now there are no data available if the potassium value has a circadian rhythm and if there are individual changes from day to day.

Detailed description

Potassium and cystatin c is measured every 2 hours during 24 hours, twice. There are two groups of patients: Patients with eGFR \< 60 ml/min and patients with eGFR \> 60 ml/min

Conditions

• Cardiac Arrhythmias
• Sudden Cardiac Death

Interventions

Type	Name	Description
PROCEDURE	Blood withdrawal	blood withdrawal every 2 hours during 24 hours

Timeline

• Start date: 2011-04-01
• Primary completion: 2013-04-01
• Completion: 2013-04-01
• First posted: 2011-03-18
• Last updated: 2018-01-12

Locations

1 site across 1 country: Germany