Clinical trial Recruiting at 1 site Observational Ages 18 to 85

Understanding resistant hypertension and its complex interactions

Official title: Resistant Hypertension An Open, Complicated ("Cum Plicare") or Complex ("Cum Plexus")

Run by University of Campinas, Brazil · NCT06450327 · Data updated 2026-11-12

This study looks at how different body systems interact in people with resistant high blood pressure to better understand why some treatments don't work.

Quick facts

Study typeObservational
Ages18 Years to 85 Years
SexAll
Enrollment80 (estimated)
SponsorUniversity of Campinas, Brazil
Academic / other
Locations1 site (Votuporanga, São Paulo)
StatusRecruiting
StartedAugust 27, 2024
Main results expectedApril 30, 2026
Study endsDecember 30, 2026
Registry record updatedAugust 29, 2024
Trial IDNCT06450327 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are men and women over 35 years old diagnosed with resistant arterial hypertension who have been under regular follow-up for at least six months.

Probably not a fit

Patients with heart failure, significant cardiovascular diseases, or other serious health conditions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to investigate resistant arterial hypertension (RAH) by examining the interplay between the autonomic nervous system, hemodynamic variables, and neuroimmune-endocrine systems. Researchers will utilize advanced cardiovascular autonomic modulation procedures to analyze heart rate variability and blood pressure variability. The study will involve participants who have been diagnosed with RAH and will assess various clinical alterations and their relationships with sympathetic nervous system activity. The goal is to provide a comprehensive understanding of the factors contributing to treatment resistance in hypertension.

Why it matters

Potential benefit: If successful, this study could lead to improved management strategies for patients with resistant hypertension.

How similar studies have gone: While there have been studies on hypertension, this approach of integrating multiple systems in understanding resistant hypertension is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* men and women over 35 years of age diagnosed with resistant arterial hypertension (RH), in accordance with the latest international and national guidelines;
* be able to understand, verbalize and answer questions;
* agree to participate in the study and sign the Informed Consent Form;
* after clearly understanding it;
* be under regular follow-up at the UNICAMP Cardiovascular Pharmacology outpatient clinic for at least six months;
* have proven adherence to non-pharmacological and pharmacological treatment;
* women in the reproductive phase must be using a proven effective contraceptive method.

Exclusion Criteria:

* clinical history or clinical symptoms of heart failure;
* patients with dilated cardiomyopathies, valvular heart disease, pericardial disorders;
* patients with cerebrovascular disease or peripheral arterial disease, nephropathies, liver diseases, smoking, autoimmune diseases and use of illicit substances;
* any abnormal condition that may interfere with the results of the study or the health of the volunteer, as judged by the researcher;
* women who are pregnant or intend to become pregnant;
* current participation in another investigative study;
* major depression or other relevant psychiatric disorders.

Where it's running

  • Tatiane de Azevedo Rubio
    Votuporanga, São Paulo, Brazil
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.