Prevalence of the Hyperventilation Syndrome in Pulmonary Arterial Hypertension

Study Overview
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Brief Summary
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Dyspnea is a major symptom in pulmonary arterial hypertension and people with the same haemodynamic have generally different degree of dyspnea in pulmonary arterial hypertension. The hyperventilation syndrome is a frequent cause of dyspnea in general population and in respiratory diseases like asthma but has never been studied in pulmonary hypertension. The goal of this study is to measure the prevalence of pulmonary hypertension in a population of patients with controlled pulmonary arterial hypertension (PAH).

Detailed Description
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Hyperventilation syndrome has been described as a cause of dyspnea in the general population and in several chronic respiratory diseases such as asthma with 20 to 40% of asthmatics affected. However, Hyperventilation syndrome has never been sought in a population with PAH. Hyperventilation syndrome, although complex pathophysiology, may be simply corrected by a management of respiratory physiotherapy based on the control of respiration.

Official Title
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Prevalence of the Hyperventilation Syndrome in Pulmonary Arterial Hypertension

Conditions
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Pulmonary Arterial Hypertension

Intervention / Treatment
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* Diagnostic Test: Hyperventilation test


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Non smoker or tobacco stopped for minimum 2 years ans maximum 10 year-pack. - Idiopathic, heritable, related to drug or toxics, associated with controlled pulmonary hypertension. Diagnosis and treatment of pulmonary hypertension for more than 4 months. Optimal control of pulmonary hypertension (no right heart failure symptom and NTproBNP < 300ng/L or Brain Natriuretic Peptide(BNP) < 50 ng/L and optimal hemodynamic results measured by a right heart catheterization in the last year: right atrial pressure < 8 mmHg, cardiac index > 2,5 L/min/m2, veinous saturation in oxygen > 65%) Informed and written consent Non-affiliation to a social security Exclusion Criteria: Existence of another form of pulmonary hypertension Existence of vocal cord dysfunction Pregnancy Obesity> stage 2 (BMI 35 kg / m2) Age ≥ 75 years

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 75 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: pulmonary arterial hypertension<br>The elements of the research consist of the Nijmegen questionnaire response, two dyspnea questionnaires (Dyspnea 12, MDP), a quality of life questionnaire (SF36), a psychological disorder screening questionnaire (HAD) and a diagnostic test: the hyperventilation test. | Diagnostic Test: Hyperventilation test<br>* The elements of the research consist of the Nijmegen questionnaire response, two dyspnea questionnaires (Dyspnea 12, MDP), a quality of life questionnaire (SF36), a psychological disorder screening questionnaire (HAD) and a diagnostic test: the hyperventilation test.<br>* Other names: Questionnaire of screening for psychological disorders;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Prevalence of the hyperventilation syndrome | Prevalence of the hyperventilation syndrome in a population with pulmonary arterial hypertension | 18 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| anxiety-depression questionary score | results of anxiety-depression questionary | 18 months | 
| dyspnea score | results of dyspnea questionary | 18 months | 
| quality of life score | results of quality of life questionary | 18 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Hyperventilation