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Related Concept Videos

Pulmonary Hypertension: Classification and Pathogenesis01:30

Pulmonary Hypertension: Classification and Pathogenesis

160
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...
160
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure01:16

Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure

189
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,...
189
Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors01:28

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors

138
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...
138
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

149
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...
149
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists01:18

Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists

145
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...
145
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists01:23

Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

162
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...
162

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Related Experiment Video

Updated: Jun 15, 2025

Increasing Pulmonary Artery Pulsatile Flow Improves Hypoxic Pulmonary Hypertension in Piglets
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Pulmonary Hypertension.

Kelly Latimer1, Michael Layne1, Maya Payne2

  • 1Eastern Virginia Medical School, Norfolk, Va.

American Family Physician
|August 22, 2024
PubMed
Summary
This summary is machine-generated.

Pulmonary hypertension (PH) is a serious condition where lung artery pressure is high, potentially leading to heart failure. Early diagnosis and specialized care are crucial for managing this progressive disease.

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Area of Science:

  • Cardiology
  • Pulmonology
  • Internal Medicine

Background:

  • Pulmonary hypertension (PH) is characterized by elevated mean pulmonary artery pressure (>20 mm Hg).
  • It can progress to right-sided heart failure and death if left untreated.
  • Common causes include left-sided heart failure and chronic obstructive lung disease.

Purpose of the Study:

  • To define pulmonary hypertension and its clinical presentation.
  • To outline diagnostic approaches and management strategies.
  • To emphasize the importance of specialized care and patient counseling.

Main Methods:

  • Diagnosis involves right heart catheterization, the gold standard for measuring pulmonary artery pressure.
  • Echocardiography serves as an initial screening tool to assess risk.
  • Clinical presentation includes unexplained dyspnea on exertion and signs of right-sided heart failure.

Main Results:

  • Delayed diagnosis is common due to symptom overlap with other cardiac and pulmonary conditions.
  • Echocardiography findings stratify patients into low, intermediate, or high risk.
  • Right heart catheterization is essential for diagnosis, classification, and treatment guidance.

Conclusions:

  • Pulmonary hypertension requires specialized management at dedicated centers.
  • Patients face high perioperative risks, necessitating thorough preoperative evaluation.
  • Physicians must counsel patients on pregnancy risks and provide comprehensive care, including mental health and advance care planning.