Evolution of Pulmonary Capillary Blood Volume (VcEP)

November 6, 2013 updated by: Centre Hospitalier Universitaire de Saint Etienne

Evolution of Pulmonary Capillary Blood Volume (Vc) in Patients After a First Episode of Pulmonary Embolism.

The purpose of this monocentric, preliminary study is to assess the evolution of pulmonary capillary blood volume (Vc), measured by the double diffusion nitric oxide/carbon monoxide (NO/CO) method (Guenard et al.; Respir Physiol 1987), from the starting of the anticoagulant therapy to 6 months after, and to search correlations with the evolution of clinical (dyspnea and results of the 6 minutes walking test), biological (BNP; Troponin), echocardiographic (right ventricular dysfunction, pulmonary arterial pressure) and ventilation/perfusion lung scan data.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

50

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

  • France
      • Saint-Etienne, France
        • Departement of pneumology, CHU Saint-Etienne
      • Saint-etienne, France
        • Department of Medicine and Therapeutic, CHU Saint-Etienne

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 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patient with a first episode of symptomatic pulmonary embolism

Description

Inclusion Criteria:

  • Patient with a first episode of symptomatic pulmonary embolism, treated with anticoagulant
  • Age from 18 to 75 years-old

Exclusion Criteria:

  • Confirmed pulmonary embolism in the past
  • Massive pulmonary embolism, thrombolytic treatment
  • Confirmed left heart systolic dysfunction
  • Confirmed asthma, chronic obstructive pulmonary disease or pulmonary fibrosis
  • Expected life below 6 months
  • Pleural effusion with indication of evacuation
  • Bronchopulmonary cancer
  • Pulmonary surgery with resection of two lobes minimum
  • Predictable incapacity to complete the 6 minutes walking test

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
Intervention / Treatment
patients after a first episode of pulmonary embolism
Other: diffusion NO/CO method
pulmonary capillary blood volume (Vc), measured by the double diffusion NO/CO method: this method is to inhale during a deep inspiration with a mixture of helium (8-10%), CO (2000 ppm) and NO (20-40 ppm), the O2 (21%)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
difference of pulmonary capillary blood volume (Vc) from J0 to 6 months
Time Frame: from the starting of the anticoagulant therapy to 6 months after
from the starting of the anticoagulant therapy to 6 months after

Secondary Outcome Measures

Outcome Measure
Time Frame
correlations with the evolution of clinical (dyspnea and results of the 6 minutes walking test), biological (BNP; Troponin), echocardiographic (right ventricular dysfunction, pulmonary arterial pressure) and ventilation/perfusion lung scan data
Time Frame: from the starting of the anticoagulant therapy to 6 months after
from the starting of the anticoagulant therapy to 6 months after

Collaborators and Investigators

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

Sponsor

Centre Hospitalier Universitaire de Saint Etienne

Investigators

  • Principal Investigator: Laurent BERTOLETTI, MD, Chu de Saint-Etienne

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

August 1, 2009

Primary Completion (Actual)

December 1, 2012

Study Completion (Actual)

December 1, 2012

Study Registration Dates

First Submitted

July 16, 2009

First Submitted That Met QC Criteria

July 16, 2009

First Posted (Estimate)

July 17, 2009

Study Record Updates

Last Update Posted (Estimate)

November 7, 2013

Last Update Submitted That Met QC Criteria

November 6, 2013

Last Verified

November 1, 2013

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 0808076
  • 2008-A01122-53 (Other Identifier: AFSSAPS)

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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