Non-invasive Pressure-Volume Analysis (NIPVA) (NIPVA)

April 1, 2022 updated by: Imperial College London

Non-invasive Pressure-Volume Analysis (NIPVA): Extending Comprehensive Left Ventricular Pump Function Assessment to More Patients and Settings

If the heart fails to pump a sufficient amount of blood, it is crucial to know why in order to provide the best treatment. Pressure-volume analysis is the gold standard for evaluating the heart's pumping function. Unfortunately, current techniques are invasive, so most patients will not get this examination. By combining the strengths of echo-Doppler ultrasound, blood pressure monitoring and biomedical computing, the investigators aim to develop a non-invasive method for pressure-volume analysis, extending its applicability to more patients and settings.

Study Overview

Status

Completed

Conditions

Detailed Description

Background: Current methods to evaluate left ventricular (LV) function either are invasive, precluding routine use in the majority of patients, or fail to discriminate myocardial, hemodynamic and structural factors, rendering assessment imprecise and incomplete.

Key question: Can we reliably obtain LV functional characteristics by non-invasive means, while being able to differentiate more precisely the factors involved? Proposed research: The study team aims to develop a non-invasive method for pressure-volume analysis (NIPVA) of the LV by combining echo-Doppler, peripheral blood pressure measurements and biomechanical modelling. The validity of this approach will be established by comparison with gold standard invasive measurements of pressure-volume relationships in patients undergoing cardiac catheterization. Test-retest reproducibility will be also assessed. The study team hypothesises that NIPVA will provide reproducible and valid measures of LV function and be more widely applicable.

Study Type

Observational

Enrollment (Actual)

65

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

  • United Kingdom
      • London, United Kingdom, W12 0HS
        • Imperial College Healthcare NHS Trust, Hammersmith Hospital

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

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients attending cardiology out-patient clinics

Description

Inclusion Criteria:

  • Individuals, male or female, aged 18-80 years.
  • 30 patients awaiting elective diagnostic coronary angiography will be recruited.
  • 30 patients attending cardiology out-patient clinics will be recruited.

Exclusion Criteria:

  • Patients with atrial fibrillation or other dysrhythmias or those unable to fully comply with the protocol will be excluded

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Reproducibility of non-invasive pressure-volume analysis.
Time Frame: Immediate
Reproducibility of test-retest non-invasive pressure-volume analysis
Immediate
Agreement between invasive and non-invasive pressure-volume analysis
Time Frame: Immediate
Agreement between invasive and non-invasive pressure-volume analysis
Immediate

Collaborators and Investigators

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

Sponsor

Imperial College London

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)

October 1, 2013

Primary Completion (Actual)

January 1, 2016

Study Completion (Actual)

October 1, 2016

Study Registration Dates

First Submitted

October 9, 2013

First Submitted That Met QC Criteria

October 10, 2013

First Posted (Estimate)

October 11, 2013

Study Record Updates

Last Update Posted (Actual)

April 11, 2022

Last Update Submitted That Met QC Criteria

April 1, 2022

Last Verified

January 1, 2020

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Protocol_NIPVA Study_v1_050613

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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