Clinical Research Directory

Inclusion Criteria: * PH group: When the mean pulmonary artery pressure is greater than 25mmHg at rest or greater than 30mmHg during exercise. * Signed informed consent obtained prior to participations with the ability to comply with protocol and be available for study visits over 5 years. Exclusion Criteria: * Acute exacerbation in the past 3 months Having other respiratory diseases with massive lung tissue destruction such as severe bronchiectasis and tuberculosis, etc. * Serious uncontrolled diseases thoracic or abdominal surgery in the last 3 months. * Eye surgery in the last three months. * Retinal detachment myocardial infarction in the last 3 months. * Admission to hospital for any cardiac condition in the last month. * Heart rate over 120 beats per minute. * Antibacterial chemotherapy for tuberculosis pregnant or breast feeding.