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Pulmonary Hypertension: Classification and Pathogenesis

Pulmonary Hypertension: Classification and Pathogenesis

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...

Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure

Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure

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, improving...

Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists

Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists

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 (ECE). Of...

Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

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...

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

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

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...

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors

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...

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[Pulmonary hypertension: practical approach].

Alexandre Bongard¹, John-David Aubert, Nicole Aebischer

¹Faculté de biologie et de médecine, Ecole de médecine, UNIL, Lausanne. alexandre.bongard@unil.ch

Revue Medicale Suisse

|June 29, 2012

Summary

This summary is machine-generated.

This review covers pulmonary hypertension (PH) definition, classification, and diagnosis using echocardiography. Early identification of at-risk patients and prompt complementary tests are crucial for effective management.

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Area of Science:

Cardiology
Pulmonology
Medical Imaging

Background:

Pulmonary hypertension (PH) presents diagnostic challenges.
Accurate classification and risk stratification are essential for patient management.
Echocardiography is a key non-invasive tool in PH evaluation.

Purpose of the Study:

To review the current definition and classification of pulmonary hypertension.
To highlight the diagnostic utility of echocardiography in PH.
To emphasize the importance of early risk identification and timely investigations.

Main Methods:

Literature review focusing on recent studies.
Analysis of echocardiographic parameters for PH diagnosis.
Discussion of clinical implications for patient management.

Main Results:

Echocardiography plays a pivotal role in the non-invasive diagnosis of PH.
Specific echocardiographic findings aid in classifying PH types.
The authors' recent study supports the efficacy of echocardiography in their cohort.

Conclusions:

Accurate definition and classification of PH are fundamental.
Echocardiography is indispensable for diagnosing PH and guiding further workup.
Prompt identification of at-risk individuals necessitates rapid complementary investigations.