Mechanisms of Pulmonary Diffusion Limitation in Systemic Sclerosis (DL-SSc)

July 25, 2018 updated by: Giovanni Barisione, IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
This study was designed to test the hypothesis that, irrespective of the degree of interstiaI lung disease and/or pulmonary arterial hypertension, the combined measurement of lung diffusing capacity for nitric oxide and carbon monoxide, might be useful to provide a mechanistic interpretation of changes of diffusion subcomponents in systemic sclerosis (SSc).

Study Overview

Status

Completed

Conditions

Detailed Description

In systemic sclerosis (SSc) the impairment of lung function is generally inferred from measurements of forced vital capacity (FVC) and standard lung diffusing capacity for carbon monoxide (DLCO). However, FVC measurement does not provide an accurate estimate of lung restriction and DLCO does not allow separate the alveolar membrane (DMCO) from erythrocyte (DeCO) diffusive conductance for CO. Previous studies have shown that DMCO and DeCO may change irrespective of overt intersitial lung disease (ILD) and/or pulmonary arterial hypertension (PAH). These changes may be consistent with a limitation of alveolar-capillary erythrocyte recruitment which impairs DM.This study was designed to test the hypothesis that, irrespective of the degree of ILD and/or PAH, combined DLNO-DLCO measurement might be useful to provide a mechanistic interpretation of DM and De changes in SSc.

Study Type

Observational

Enrollment (Actual)

100

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

SSc patients

Description

Inclusion Criteria:

  • patients fulfilling the 2013 American College of Rheumatology/European League Against Rheumatism criteria for a definite diagnosis of SSc with a total score ≥9

Exclusion Criteria:

  • unstable subjects and/or who have suffered from respiratory exacerbations in the previous 4-wk

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

  • Observational Models: Cohort
  • Time Perspectives: Retrospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Lung diffusing capacity for nitric oxide
Time Frame: 2 hours
Alveolar-capillary gas exchange
2 hours

Collaborators and Investigators

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

Sponsor

IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy

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)

March 1, 2014

Primary Completion (Actual)

October 31, 2017

Study Completion (Actual)

November 15, 2017

Study Registration Dates

First Submitted

July 17, 2018

First Submitted That Met QC Criteria

July 17, 2018

First Posted (Actual)

July 26, 2018

Study Record Updates

Last Update Posted (Actual)

July 27, 2018

Last Update Submitted That Met QC Criteria

July 25, 2018

Last Verified

July 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IRCCS-SSc-2018

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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