Intermittent Hypoxia-Hyperoxia Training in Cerebral Venous Outflow Disorders (IHHT-CVOD) (IHHT-CVOD)

December 13, 2024 updated by: Ji Xunming,MD,PhD, Capital Medical University

Exploratory Study of the Impact of Intermittent Hypoxia-hyperoxia Training on Patients with Cerebral Venous Outflow Disorders

This study aims to investigate the safety and efficacy of intermittent hypoxia-hyperoxia treatment in patients with cerebral venous outflow disorders.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Cerebral venous outflow disorder (CVOD), resulting from internal blockage, external oppression, or jugular valve incompetence, can cause hemodynamic disturbance and abnormal perfusion status. Restricted applicable populations and limited benefits constrain the application of existing CVOD management approaches. Previous studies indicate intermittent hypoxia hyperoxia training (IHHT) might improve circulatory status via hypoxic stimulation and allow hypoxic-related symptom amelioration through oxygen supply. Thus, IHHT might be a promising therapy for the CVOD population. Studies have so far proved inconclusive as to whether IHHT is safe and effective for CVOD. Therefore, the present study aimed to investigate the safety and feasibility of IHHT in patients with cerebral venous outflow disorder.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
20

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Beijing
      • Beijing, Beijing, China, 100053
        • Xuanwu Hospital, Capital Medical University

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Age range from 18 to 80 years.
  2. Diagnosis of CVOD confirmed by CE-MRV, DSA, CTV, or ultrasound, including cerebral venous sinus stenosis (CVSS), internal jugular venous stenosis (IJVS), or internal jugular venous valve incompetence.
  3. Unexplained chronic neurological deficits or other symptoms > 3 months.
  4. Signed informed consent from the patient or legally authorized representative.

Exclusion Criteria:

  1. Life-threatening comorbidities.
  2. Clinical symptoms and signs explained by other diseases.
  3. Intracranial hypertension; moderate to severe intracranial/extracranial arterial stenosis.
  4. History of ischemic/hemorrhagic stroke or cerebral endovascular surgery.
  5. Intracranial abnormalities, such as tumors, abscesses, vascular malformations, or cerebral venous sinus thrombosis.
  6. Confirmed sleep apnea, plateau residency, traveling history of altitude > 1000m, or relative hypoxic exposure within last six months.
  7. Poor compliance.

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Intermittent Hypoxia-Hyperoxia Training
Participants will receive 14 times intermittent hypoxia-hyperoxia training interventions within 2 to 3 weeks.
Device: intermittent hypoxia-hyperoxia treatment
The intermittent hypoxia-hyperoxia training refers to 4 cycles of 10-minute hypoxia inhalation interspersed with 20-minute hyperoxia, which is performed once daily for 14 days within 2 to 3 weeks.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence of adverse reactions
Time Frame: After the 14-time IHHT interventions.
Adverse reactions included headache, vomiting, diarrhea, fatigue, dizziness, and insomnia.
After the 14-time IHHT interventions.
Incidence of adverse reactions
Time Frame: After the first-time IHHT intervention.
Adverse reactions included headache, vomiting, diarrhea, fatigue, dizziness, and insomnia.
After the first-time IHHT intervention.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Heart rate
Time Frame: At the first-time IHHT intervention.
Heart rate was recorded every 5 minutes from the start to 30 minutes following the completion of the first IHHT intervention.
At the first-time IHHT intervention.
Blood pressure
Time Frame: At the first-time IHHT intervention.
Brachial arterial blood pressure was measured every 5 minutes from the start to 30 minutes following the completion of the first IHHT intervention.
At the first-time IHHT intervention.
Tissue oxygen saturation
Time Frame: At the first-time IHHT intervention.
Peripheral and cerebral tissue oxygen saturations were recorded every 5 minutes from the start to 30 minutes following the completion of the first IHHT intervention.
At the first-time IHHT intervention.
Twenty-four-hour ambulatory blood pressure
Time Frame: The day before the 14-time treatment; The day after the 14-time treatment.
Including systolic blood pressure and diastolic blood pressure (mmHg).
The day before the 14-time treatment; The day after the 14-time treatment.
Blood routine indexes
Time Frame: The day before the 14-time treatment; The day after the 14-time treatment.
Changes in blood routine indexes will be detected.
The day before the 14-time treatment; The day after the 14-time treatment.
Blood biochemical changes
Time Frame: The day before the 14-time treatment; The day after the 14-time treatment.
Changes in blood biochemical parameters will be detected.
The day before the 14-time treatment; The day after the 14-time treatment.
The global impression of the treatment
Time Frame: The day after the 7-day treatment.
The patient global impression of change (PGIC) scale was used after the 14 training sessions to assess the perceived global impression of change from the patient's perspective. This instrument is a numeric scale ranging from 1 (very much improved) to 7 (very much worse), with a lower score indicating better improvement.
The day after the 7-day treatment.
Symptoms
Time Frame: The day before the 14-time treatment ;The day after the 14-time treatment.
It is evaluated by completing the follow-up form.
The day before the 14-time treatment ;The day after the 14-time treatment.

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 1, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 1, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 4, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 13, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 25, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 25, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 13, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • IHHT-CVOD

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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