CompletedNot Applicable

Effects of Sodium Chloride or Its Substitute Salt Potassium Chloride on Vascular Function

Germany45 participantsStarted 2023-08-09

Plain-language summary

This is a prospective, monocentric, randomized trial to investigate how sodium chloride or its substitute potassium chloride acutely affects vascular function by ingestion via a salted soup. Furthermore we want to get insights on the pathophysiology by analyzing metabolism and cell function in relation to vascular reaction.

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * full-aged * signed informed consent * no dietary restrictions * access to retina for microvascular measurement Exclusion Criteria: * age \<18 y * no retinal access for microvascular measurement * known glaucoma * antibiotic therapy within the last 4 weeks * immunosuppressive Therapie within the last 4 weeks (e.g. glucocorticoids) * s.p. malignancy * unknown fever within the last 4 weeks * salt wasting syndroms (e.g. renal tubular acidosis, Diabetes insipidus) * chronic kidney disease stage 4-5 * known electrolyte disorder (e.g. hyperkalaemia, hypokalaemia, hypernatriaemia, hyponatriaema) * no or rejected informed consent

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Effect of a single oral high-sodium chloride load or a partial substitution by potassium chloride on retinal vessel diameter and the flicker-light-induced retinal vessel dilatation.

Timeframe: Baseline, 4 hours, 24 hours

Effect of a single oral high-sodium chloride load or a partial substitution by potassium chloride on hypoxia-induced dilatation of brachial artery.

Timeframe: Baseline, 4 hours, 24 hours

Trial details

NCT IDNCT05970601

SponsorProf. Dr. med. Johannes Stegbauer

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2024-03-22

View on ClinicalTrials.gov More Vascular Function trials

Plain-language summary

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

What they're measuring

Effect of a single oral high-sodium chloride load or a partial substitution by potassium chloride on retinal vessel diameter and the flicker-light-induced retinal vessel dilatation.

Timeframe: Baseline, 4 hours, 24 hours

Effect of a single oral high-sodium chloride load or a partial substitution by potassium chloride on hypoxia-induced dilatation of brachial artery.

Timeframe: Baseline, 4 hours, 24 hours