Non-Invasive Lung Water Monitoring in Pulmonary Hypertension

April 25, 2025 updated by: Shanghai Zhongshan Hospital

Non-Invasive Lung Water Monitoring Guided by Remote Dielectric Sensing Technology in the Management of Patients With Pulmonary Hypertension

The investigators conducted a prospective, convenience-sampled observational pilot study, enrolling adult patients with pulmonary hypertension who were either outpatients or inpatients in the cardiology department of our hospital. The measurement of Remote Dielectric Sensing (ReDS) values was performed by ReDS™ Pro. Data were collected using the electronic medical record system of our hospital. Participants were followed up within 6 months after discharge. The primary endpoints included all-cause mortality or clinical deterioration related to pulmonary hypertension.

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

The investigators conducted a prospective, convenience-sampled observational pilot study, enrolling adult patients with pulmonary hypertension who were either outpatients or inpatients in the cardiology department of our hospital. The measurement of Remote Dielectric Sensing (ReDS) values was performed by ReDS™ Pro. Data were collected using the electronic medical record system of our hospital. Participants were followed up within 6 months after discharge. The primary endpoints included all-cause mortality or clinical deterioration related to pulmonary hypertension. Data were collected using the electronic medical record system of our hospital, including demographics, clinical diagnoses, past medical history, ancillary examinations and laboratory test, surgical procedures, and medication use. Treatment and management of participants were in accordance with guideline recommendations. Participants were followed up by telephone or outpatient visits within 6 months after discharge.

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.
Observational

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.
202

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
      • Shanghai, China, 200032
        • 180 Fenglin Road

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

Sampling Method

Non-Probability Sample

Study Population

Inpatients and outpatients with PH who were admitted to the Department of Cardiology at Zhongshan Hospital, Fudan University, between April 2024 and March 2025 were prospectively enrolled in this study.

Description

Inclusion Criteria:

  • Age ≥18 and ≤85 years, with no gender restriction;
  • Hemodynamic confirmation of PH via right heart catheterization (RHC) (mean pulmonary arterial pressure [mPAP] > 20 mmHg).

Exclusion Criteria:

  • Thoracic deformities or injuries precluding proper device fit (e.g., severe scoliosis, flail chest);
  • Inability to use the ReDS™ Pro non-invasive lung fluid monitor due to physical characteristics (height <155 cm or >190 cm; body mass index [BMI] <22 kg/m² or >39 kg/m²);
  • Prior implantation of a left ventricular assist device or cardiac transplantation;
  • Congenital cardiac anomalies or intrathoracic masses affecting right lung anatomy;
  • Hemodynamic profiles inconsistent with PH.

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

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
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.
lung fluid
The measurement of ReDS values was performed with the patient in a seated position and under normal breathing conditions. It was conducted on the morning of the second day following admission or at the end of an outpatient visit. The device's sensors or vest were properly placed on the patient's chest to ensure good contact between the sensors and the skin. Upon initiating the measurement program, the device emitted low-power electromagnetic signals that passed through the thorax and lungs. It measured the dielectric constant (impedance) of the lungs and calculated the percentage of lung fluid. The manufacturer-recommended normal range is between 20% and 35%. The entire measurement process took approximately 45 seconds.
Device: Remote Dielectric Sensing
The lung fluid monitor Remote Dielectric Sensing (ReDS™) is the world's first non-invasive device for heart failure monitoring and management. It directly reflects lung fluid content by measuring changes in thoracic dielectric constants, with a detection range of 15% ~ 60%. The device can sensitively identify pathological states ranging from mild compensation to severe pulmonary edema. ReDS™ technology cannot directly measure pulmonary artery pressure, but changes in lung fluid content may indirectly reflect disease progression in certain types of pulmonary hypertension.

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
all-cause mortality or clinical deterioration related to PH
Time Frame: The follow-up period is up to March 31, 2025.
1) all-cause death or lung transplantation; 2) rehospitalization due to PH-related heart failure; 3) worsening of WHO cardiac functional class.
The follow-up period is up to March 31, 2025.

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.
Shanghai Zhongshan Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Dandan CHEN, Fudan University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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.
April 1, 2024

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.
March 5, 2025

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.
March 31, 2025

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).
April 17, 2025

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.
April 17, 2025

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.
April 24, 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.
April 29, 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.
April 25, 2025

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.
April 1, 2025

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.
  • ReDS in PAH

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

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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