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Bosentan in Treatment of Pulmonary Arterial Hypertension

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00266162
Recruitment Status : Completed
First Posted : December 16, 2005
Last Update Posted : May 7, 2008
German Federal Ministry of Education and Research
Information provided by:
Competence Network for Congenital Heart Defects

Brief Summary:
Eisenmenger's syndrome presents as a severe clinical picture of polymorbidity that constitutes a great burden at the individual as well as the familial and social level. The combination of critically increased pulmonary vascular resistance, progressive pressure load of the right ventricle and disturbance of pulmonary gas exchange result in long-term polymorbidity. The objective of this study is to look into the effects of medium-term pulmonary pressure-lowering treatment with oral bosentan in patients with congenital heart defects and clinically relevant pulmonary arterial hypertension (PAH), taking advantage of extensive diagnostic procedures.

Condition or disease Intervention/treatment Phase
Eisenmenger Syndrome Drug: Bosentan administration Phase 4

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Study Type : Interventional  (Clinical Trial)
Enrollment : 60 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Therapy of Pulmonary Arterial Hypertension (PAH) With Bosentan in Patients With Eisenmenger Syndrome
Study Start Date : August 2004
Actual Primary Completion Date : February 2008
Actual Study Completion Date : February 2008

Primary Outcome Measures :
  1. maximal exercise tolerance (walking distance in the 6-minute walking test)
  2. peripheral oxygen saturation (SatO2)
  3. pulmonary-systemic ratio of arterial resistance (Rp:Rs)

Secondary Outcome Measures :
  1. NYHA class
  2. increase in pulmonary reagibility by bosentan therapy
  3. normalisation of vasoactive mediators by bosentan therapy

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Non-specific:

    • Written informed consent obtained
  • Specific:

    • Age at least 18 years
    • Presence of cyanosis with < 93 % arterial oxygen saturation (measured by transcutaneous pulse oximetry)
    • Clinical indication for the invasive diagnostic procedures planned for the study is given; this is evaluated on the basis of observation before, during and after medicinal treatment)
    • Presence of PAH as diagnosed by invasive methods with Rp:Rs > 0.75 measured at rest, before testing of pulmonary vasodilatory reserve
    • One of the following diagnoses:

      • non-corrected large congenital shunting defect at atrial, ventricular or arterial level: PAPVD, ASD, SVD, VSD, AVSD, TAC, APW, PDA, or a combination of these.
      • Surgically corrected shunting defect (diagnoses as above) with significant residual defect
      • Other diagnoses with univentricular physiology/haemodynamics.

Exclusion Criteria:

  • Non-specific:

    • pregnancy or lactation
    • women of child-bearing age who are sexually active without practising reliable methods of contraception
    • any disease or impairment that, in the opinion of the investigator, excludes a subject from participation
    • substance abuse (alcohol, medicines, drugs)
    • other medical, psychological or social circumstances that would adversely affect a patient's ability to participate adequately in the study or increase the risk to the patient or others in the case of participation.
    • insufficient compliance
    • subjects in whom MRI cannot be performed (contrast medium allergy, claustrophobia, cardiac pacemaker)
    • subjects who are not able to perform CPX
  • Specific:

    • pulmonary hypertension of any aetiology other than those specified in the inclusion criteria
    • subjects with known intolerance of NO or iloprost or their constituents
    • acute decompensated heart failure within 7 days before the invasive procedure
    • haemodynamic instability that would increase the risk of pulmonary arterial reactivity testing
    • arterial hypotension
    • anaemia (Hb < 10 g/dl)
    • decompensated symptomatic polycythaemia
    • thrombocytopenia (< 50,000/μl)
    • secondary impairment of organic (renal, hepatic) function
    • other sources of pulmonary blood flow which render the measurement of the blood flow to the lungs and pulmonary vascular resistance impossible
    • obstruction of pulmonary blood outflow
    • left ventricular diseases
    • significant valvular diseases other than tricuspid or pulmonary regurgitation
    • pericardial constriction
    • history of stroke, myocardial infarction or life-threatening arrhythmia within 6 months before screening
    • bronchopulmonary dysplasia or other chronic lung diseases
    • history of significant pulmonary embolism
    • other relevant diseases (e.g. HIV infection)
    • trisomy 21
    • Prohibited concomitant medication: Any medication listed below which has not been discontinued at least 30 days prior to screening.
    • Unspecified or other significant medication (e.g. medication for diabetes or immunosuppression)
    • Unstable medication, recent changes in dosage regimen
    • Drugs to treat pulmonary hypertension (endothelin receptor antagonists, PDE-5 antagonists, prostanoids. (Specific pulmonary vasodilators during cardiac catheterisation are allowed.)
    • Other medication with vascular action
    • Medication that is not compatible with bosentan or that interferes with its metabolism (inhibitors of CYP2C9 or CYP3A4) or that, in the investigator's opinion, may interfere with bosentan treatment

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00266162

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Kinderkardiologie Universitätsklinikum Freiburg
Freiburg, Baden-Wuerttemberg, Germany, D-79106
Deutsches Herzzentrum Muenchen
Munich, Bavaria, Germany, D-80636
Universitätsklinikum Giessen and Marburg
Giessen, Hesse, Germany, D-35385
Herz-und Diabeteszentrum NRW
Bad Oeynhausen, North Rhine-Westphalia, Germany, D-32545
Universitätsklinikum Schleswig-Holstein Campus Kiel
Kiel, North Rhine-Westphalia, Germany, D-24105
Universitätsklinikum des Saarlandes
Homburg, Saarland, Germany, D-66421
Universitätsklinikum der Martin-Luther-Universität Halle-Wittenberg
Halle, Saxony-Anhalt, Germany, D-06097
Deutsches Herzzentrum Berlin
Berlin, Germany, D-13353
Sponsors and Collaborators
Competence Network for Congenital Heart Defects
German Federal Ministry of Education and Research
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Principal Investigator: Ingram Schulze-Neick, MD German Heart Institute

Layout table for additonal information Identifier: NCT00266162    
Other Study ID Numbers: MP 3.2
First Posted: December 16, 2005    Key Record Dates
Last Update Posted: May 7, 2008
Last Verified: May 2008
Keywords provided by Competence Network for Congenital Heart Defects:
Heart Defects, Congenital
Eisenmenger Complex
Hypertension, Pulmonary
Pulmonary Heart Disease
Pulmonary Circulation
Vascular Resistance
Additional relevant MeSH terms:
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Eisenmenger Complex
Pathologic Processes
Vascular Diseases
Cardiovascular Diseases
Heart Defects, Congenital
Cardiovascular Abnormalities
Heart Diseases
Congenital Abnormalities
Antihypertensive Agents
Endothelin Receptor Antagonists
Molecular Mechanisms of Pharmacological Action