The progress of pulmonary artery denervation

Area of Science:

• Cardiovascular Research
• Pulmonary Medicine
• Neuroscience

Background:

• Pulmonary arterial hypertension (PAH) is a severe condition involving increased pulmonary artery pressure and vascular remodeling.
• Emerging evidence links sympathetic nervous system (SNS) activity to PAH pathogenesis.

Purpose of the Study:

• To review the anatomical distribution and components of sympathetic nerves (SNs) within the pulmonary artery.
• To explore various pulmonary artery denervation (PADN) methods and their therapeutic effects on PAH.

Main Methods:

• Literature review focusing on studies detailing SN location in pulmonary arteries.
• Analysis of different PADN techniques: chemical, surgical, and catheter-based ablation.
• Evaluation of reported hemodynamic and pressure changes post-PADN.

Main Results:

• Sympathetic nerves are predominantly located around the main pulmonary artery and its bifurcation.
• PADN, through various methods, effectively reduces pulmonary arterial pressure and improves hemodynamics.
• PADN shows potential as a treatment for PAH, particularly for medication-refractory cases.

Conclusions:

• PADN is a prospective therapy for PAH, targeting the role of sympathetic nerves.
• Further large-scale clinical studies are required to confirm SN distribution and optimize PADN efficacy.