Efficacy of Remote Ischemic Conditioning for Hypertension in High-Altitude Immigrant Populations

April 25, 2026 updated by: Ji Xunming,MD,PhD, Capital Medical University
This study is a multicenter, prospective, randomized, open-label, parallel-controlled clinical trial. The study participants are adult patients with hypertension who have been long-term residents (for >6 months) in high-altitude regions (≥2500 m). They are randomly assigned to one of two groups: a conventional medication group and a remote ischemic conditioning (RIC) intervention group. The study aims to evaluate the effectiveness of a standardized 30-day RIC intervention, as an add-on to conventional antihypertensive medication, for reducing blood pressure in hypertensive immigrants living at high altitude.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

184

Phase

  • Phase 3

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

Age 18-60 years, of either sex; Continuous residence in a high-altitude region (>2500 m) for more than 6 months, with no plan for long-term departure from the plateau during the study period; Meeting the diagnostic criteria for essential hypertension; Willing to provide written informed consent.

Exclusion Criteria:

Evidence of secondary hypertension; Severe dysfunction of vital organs (e.g., heart, liver, kidney, lungs); Active malignancy, uncontrolled hyperthyroidism, active autoimmune disease, or poorly controlled diabetes mellitus; Office blood pressure ≥180/110 mmHg, or 24-hour average blood pressure ≥170/100 mmHg; Hospitalization for hypertensive crisis or emergency at least once within the past 3 months; History of cardiovascular or cerebrovascular event within the past 3 months; Pregnancy, planned pregnancy, or lactation for female participants; Contraindications to RIC (e.g., severe peripheral arterial disease, venous thrombosis, or soft tissue injury in the upper limbs); Any other condition deemed by the investigator to be unsuitable for participation in the study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
No Intervention: Control group
Experimental: RIC group
Device: RIC
Participants will undergo a 7-day remote ischemic conditioning (RIC) intervention prior to ascending to high altitude. On the day following the completion of the RIC intervention, they will ascend to a high-altitude region (>2500 m). Standardized RIC treatment will be administered using a dedicated RIC device. Each intervention session consists of 5 cycles. Every cycle includes 5 minutes of bilateral upper limb ischemia followed by 5 minutes of reperfusion. The cuff pressure for inducing ischemia is set at 200 mmHg. The intervention is administered twice daily for 30 consecutive days.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Percentage change in 24-hour mean systolic blood pressure from baseline.
Time Frame: 30 days
30 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Capital Medical University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

May 10, 2026

Primary Completion (Estimated)

January 30, 2028

Study Completion (Estimated)

June 30, 2028

Study Registration Dates

First Submitted

April 25, 2026

First Submitted That Met QC Criteria

April 25, 2026

First Posted (Actual)

May 1, 2026

Study Record Updates

Last Update Posted (Actual)

May 1, 2026

Last Update Submitted That Met QC Criteria

April 25, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • RIC-HIP

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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