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Peripheral Muscle Microcirculation and Exercise-induced Blood Flow Distribution in Pulmonary Arterial Hypertension

NCT01520493 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2018-03-07

No results posted yet for this study

Summary

Pulmonary artery hypertension (PAH) is a rare, severe disease, characterized by a progressive increase in pulmonary vascular resistance ultimately leading to right ventricular (RV) failure and premature death. PAH may be idiopathic (IPAH) or may be also related to various conditions like portal hypertension, HIV infection, left to right shunt, connective tissue diseases such as scleroderma (PAHSSc). Symptoms include dyspnea and fatigue resulting in restricted exercise capacity and poor quality of life. The therapies currently approved have been shown to improve survival. Indeed, recent studies described a three year survival higher than 80%. This improved survival is associated with major challenges for clinicians as most patients remain with limited exercise capacity and poor quality of life. A clear understanding of exercise physiopathology is thus mandatory to specifically address mechanisms responsible for this exercise limitation and eventually improve patients' management. In order to better characterize the exercise physiopathology in PAH, the general objective of this research is to systematically examine blood flow distribution and limb muscles microcirculation at rest and during submaximal exercise in PAH.

Conditions

Interventions

OTHER

Submaximal exercises

Consists of a 3-min unloaded exercise, followed by a progressive RAMP protocol (10 watts/min) up to 70% of peak workload followed by 3 min. of cycling at constant workload (70% peak workload) (total exercise duration of 25 min.).

Sponsors & Collaborators

  • Laval University

    lead OTHER

Principal Investigators

  • Steeve Provencher, MD, MSc · Fondation IUCPQ

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2011-06-30
Primary Completion
2013-08-31
Completion
2015-03-31

Countries

  • Canada

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01520493 on ClinicalTrials.gov