Related Experiment Video
Updated: Jan 16, 2026

The Left Pneumonectomy Combined with Monocrotaline or Sugen as a Model of Pulmonary Hypertension in Rats
Published on: March 8, 2019
Pulmonary Hypertension Associated with Severe Interstitial Pneumonia Successfully Treated with Inhaled Treprostinil
Mitsuki Otsuka1, Shiro Sonoda1, Takayuki Yamada1
1Department of Respiratory Medicine, Institute of Science Tokyo, Japan.
Abstract:
Inhaled treprostinil is the first-choice drug for the treatment of Group 3 pulmonary hypertension (PH) associated with chronic lung disease. A 72-year-old man was diagnosed with interstitial pneumonia, and his respiratory symptoms had gradually worsened. Echocardiography revealed a maximum tricuspid regurgitation pressure gradient (TRPG) of 64 mmHg, and the patient was diagnosed with Group 3 PH. Subsequently, he was admitted to the hospital with acute heart failure. Inhaled treprostinil was prescribed, his B-type natriuretic peptide level and maximum TRPG subsequently improved, and his oxygen requirement decreased. Treprostinil inhalation may be effective in treating patients with severe respiratory symptoms of interstitial pneumonia.
Related Concept Videos
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
Pulmonary Hypertension: Classification and Pathogenesis
There are various classifications for PH, each relating to different underlying causes and also...
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme...
Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue,...

