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Related Concept Videos

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors01:28

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors

594
Phosphodiesterase 5 (PDE5) inhibitors are potent enzymes that function to hydrolyze cyclic nucleotides to their corresponding 5' monophosphates. Their unique biochemical properties have been applied in treating Pulmonary Arterial Hypertension (PAH).
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...
594
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists01:18

Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists

464
Endothelins (ETs) are potent vasoactive peptides critical in the human body's various physiological and pathological processes. One of the most promising therapeutic strategies for treating pulmonary arterial hypertension (PAH) involves counteracting the effects of these endothelins using a class of drugs known as endothelin receptor antagonists.
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme...
464
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists01:23

Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

493
Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
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...
493
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure01:16

Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure

611
Oxygen therapy has emerged as a significant tool in enhancing the quality of life for patients suffering from pulmonary arterial hypertension (PAH). While this therapy has principally been studied on patients with significant hypoxemia, this therapeutic approach helps prevent potential organ damage and can be administered in the comfort of one's home.
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue,...
611
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers01:26

Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers

506
Receptor tyrosine kinase inhibitors (TKIs) and calcium channel blockers (CCBs) are two critical categories of drugs employed in the treatment of pulmonary artery hypertension (PAH). PAH is a disease that causes high blood pressure in the pulmonary arteries, resulting in chest pain, fatigue, and shortness of breath.
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...
506
Pulmonary Hypertension: Classification and Pathogenesis01:30

Pulmonary Hypertension: Classification and Pathogenesis

621
Pulmonary hypertension (PH) is a severe health condition in which the mean pulmonary arterial pressure increases to 25 mmHg or more, even when the body is at rest. This high pressure in the blood vessels that transport blood from the heart to the lungs can cause various symptoms, including shortness of breath, can lead to right heart failure, and significantly affect the overall quality of life.
There are various classifications for PH, each relating to different underlying causes and also...
621

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Related Experiment Video

Updated: Jan 27, 2026

Evaluation of Right Ventricular Function in Experimental Models of Pulmonary Arterial Hypertension
10:03

Evaluation of Right Ventricular Function in Experimental Models of Pulmonary Arterial Hypertension

Published on: June 27, 2025

762

[Pulmonary arterial hypertension].

J Guiot1, G Parzibut1, T Weber2

  • 1Service de Pneumologie, CHU Liège, Belgique.

Revue Medicale De Liege
|March 22, 2019
PubMed
Summary
This summary is machine-generated.

Pulmonary arterial hypertension (PAH) is a rare lung disease. Early diagnosis and combination therapy are crucial for reducing patient mortality and improving outcomes.

Keywords:
Pulmonary hypertensionRight heart failurePulmonary arterial hypertension

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Area of Science:

  • Cardiology
  • Pulmonology
  • Vascular Medicine

Background:

  • Pulmonary arterial hypertension (PAH) is a rare, complex vascular lung disease.
  • Diagnosis can be challenging due to atypical symptoms like shortness of breath.
  • Right heart catheterization is essential for confirming elevated pulmonary arterial pressure (≥25 mmHg).

Purpose of the Study:

  • To highlight the importance of early diagnosis and treatment in Pulmonary arterial hypertension.
  • To emphasize the shift towards initial combination therapy in recent international recommendations.
  • To underscore the need for increased global knowledge regarding PAH.

Main Methods:

  • Review of current diagnostic criteria for Pulmonary arterial hypertension.
  • Analysis of recent international treatment guidelines.
  • Discussion of the impact of early intervention and combination therapy.

Main Results:

  • International guidelines now recommend initial combination therapy for PAH.
  • This approach has demonstrated a reduction in patient morbidity and mortality.
  • Early therapeutic intervention is a key priority in managing PAH.

Conclusions:

  • Increased global awareness and knowledge of PAH are essential.
  • Prompt diagnosis and initiation of combination therapy can significantly improve patient prognosis.
  • Addressing the complexities of PAH requires a comprehensive understanding of its etiopathogeny and treatment landscape.