An interventional study of blood sampling in Renal Denervation Therapy, sponsored by Rede Optimus Hospitalar SA. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-26.
Sponsored by Rede Optimus Hospitalar SA · Not applicable, Interventional, and Basic science
The purpose of this clinical study is to better understand how renal denervation (RDN) affects kidney function, both shortly after and up to a year after the procedure. Renal denervation is a minimally invasive treatment used for patients with high blood pressure that does not respond well to medication ("resistant hypertension"). It works by reducing the activity of nerves that run along the arteries supplying the kidneys, which helps lower blood pressure.
To understand how RDN affects the kidneys, we will measure kidney function in detail and analyse blood and urine samples collected before and after the procedure. This will help researchers see whether the procedure causes changes in the kidneys, and whether some of these changes are linked to better kidney health over time.
Rede Optimus Hospitalar SA is the lead sponsor of 6 studies on the registry; 6 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
GFR and eGFR (kidney filtering)
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
bio sample collection (blood, urine)
Diagnostic Test: blood sampling
Blood samples will be taken to examine the mGFR as parameter for kidney function
Change of a specific protein score in urine between Baseline visit (Day 1) and 12 months follow-up visit
Change of a specific protein score in urine prior to standard of care index procedure and 12 months from index procedure. Samples will be stored until the last patient had the last visit. All measurements will be then done afterwards.
Time frame: Baseline visit (Day 1) and 12 months follow-up visit
No study locations are listed for this record.
Plan to share: No
No publications or documents are linked to this record.
Start is estimated for Sep 2026; primary completion for Aug 2028, 23 months later.
How these figures are worked out, and which studies are left out of them.
This study is not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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Rede Optimus Hospitalar SA