Correlation of Physical Exam Versus Non-invasive Assessment Versus Invasive Assessment of Central Venous Pressure

NCT ID: NCT01574690

Last Updated: 2013-02-08

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

50 participants

Study Classification

OBSERVATIONAL

Study Start Date

2012-04-30

Study Completion Date

2013-01-31

Brief Summary

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The purpose of this study is to establish the accuracy of a non-invasive device that uses near infrared spectroscopy (NIRS) to estimate central venous pressure (CVP) comparing it to physical exam and invasive hemodynamic measurement via right heart catheterization (RHC).

Detailed Description

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Estimation of volume status is crucial when making treatment decisions for heart failure patients. Volume status is often assessed clinically by estimating the CVP, which is an estimate of right atrial filling pressure, by assessing the level of jugular venous distention. This method is quick and non-invasive but can be prone erroneous measurement due to human error and limitations secondary to body habitus and anatomical variation.

RHC is a procedure used for invasive hemodynamic measurement commonly used in heart failure patients. CVP can be measured directly via RHC using a pulmonary artery catheter. It is considered the gold standard for measuring intra-cardiac filling pressures and calculation of cardiac output and pulmonary and systemic vascular resistance. The obvious downside of RHC is that is invasive, time consuming, and has many potential serious risks including vascular complication, pneumothorax, infection, arrhythmia, valvular damage, etc.

A non-invasive, quick, and accurate way to estimate central venous pressure and oximetry could benefit patient care. NIRS is an optical imaging technology that has been proposed to estimate central venous pressure non-invasively. Our intent is to determine the accuracy of NIRS in assessment of CVP using the Mespere Venus device.

Conditions

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Central Venous Pressure

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Heart failure patients

50 subjects (both male and female) Heart failure patients already receiving RHC as part of their usual care

Mespere Venus System

Intervention Type DEVICE

For this non-invasive system, an adhesive patch (connected to the Mespere Venus system) is placed on the neck of the subject, to determine if the CVP values displayed by the device correlates with the CVP values obtained by RHC and physical exam

Right heart catheterization (RHC)

Intervention Type PROCEDURE

Invasive procedure to assess CVP. Standard of care.

Physical examination of jugular vein

Intervention Type PROCEDURE

Physicians assess CVP using the subject's jugular vein.

Interventions

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Mespere Venus System

For this non-invasive system, an adhesive patch (connected to the Mespere Venus system) is placed on the neck of the subject, to determine if the CVP values displayed by the device correlates with the CVP values obtained by RHC and physical exam

Intervention Type DEVICE

Right heart catheterization (RHC)

Invasive procedure to assess CVP. Standard of care.

Intervention Type PROCEDURE

Physical examination of jugular vein

Physicians assess CVP using the subject's jugular vein.

Intervention Type PROCEDURE

Other Intervention Names

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Non-invasive central venous pressure system Jugular venous pressure (JVP)

Eligibility Criteria

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Inclusion Criteria

* Age 18 and older
* Heart failure patients already receiving RHC as part of their usual care
* Signed written and informed consent

Exclusion Criteria

* Lack of patient consent
* Presence of known anatomical shunt or AV dialysis fistula
* Sepsis, fever
* Anemia (Hgb \< 10)
* Allergy to adhesive tape
* Known central vein stenosis
* Previous cardiac transplant
* Unable to identify external jugular vein
* Ongoing photodynamic therapy
* Pregnancy
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Michigan

OTHER

Sponsor Role collaborator

Mespere Lifesciences Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Todd M Koelling, MD

Role: PRINCIPAL_INVESTIGATOR

University of Michigan

Locations

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University of Michigan Cardiovascular Center

Ann Arbor, Michigan, United States

Site Status

Countries

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United States

Other Identifiers

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HUM00054670

Identifier Type: OTHER

Identifier Source: secondary_id

MLS STP-9000008

Identifier Type: -

Identifier Source: org_study_id

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