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Study Evaluating the Addition of Sildenafil to Bosentan Therapy in Pulmonary Arterial Hypertension

This study has been withdrawn prior to enrollment.
Information provided by:
University Health Network, Toronto Identifier:
First received: October 27, 2008
Last updated: November 12, 2009
Last verified: November 2009

This study will examine the effects of add-on sildenafil to bosentan monotherapy in patients with Pulmonary Arterial Hypertension. Patients on bosentan monotherapy will be followed every 6 months to assess if they have met the pre-defined treatment goals. If a patient fails to achieve these treatment goals or fails to maintain them, sildenafil will be added to their existing bosentan monotherapy. Patients will be assessed 6 months after start of combination therapy for changes in 6MWT, Borg dyspnea scale, WHO functional class, quality of life.

Condition Intervention Phase
Hypertension, Pulmonary
Drug: Sildenafil
Phase 3

Study Type: Interventional
Official Title: Addition of Sildenafil to Bosentan Monotherapy in Patients With Pulmonary Arterial Hypertension (PAH)

Resource links provided by NLM:

Further study details as provided by University Health Network, Toronto:

Arms Assigned Interventions
Active Comparator: Sildenafil Drug: Sildenafil


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both

Inclusion & Exclusion Criteria

  Contacts and Locations
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, see Learn About Clinical Studies.

No Contacts or Locations Provided
  More Information

No publications provided Identifier: NCT00780728     History of Changes
Other Study ID Numbers: UHNOHI
Study First Received: October 27, 2008
Last Updated: November 12, 2009
Health Authority: Canada: Health Canada

Additional relevant MeSH terms:
Hypertension, Pulmonary
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases
Vascular Diseases
Cardiovascular Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Phosphodiesterase 5 Inhibitors
Phosphodiesterase Inhibitors
Therapeutic Uses
Urological Agents
Vasodilator Agents processed this record on November 20, 2014