The Pulmonary Circulation in the Single Ventricle Patient

Area of Science:

• Pediatric Cardiology
• Congenital Heart Disease
• Pulmonary Circulation Physiology

Background:

• Survival rates for children with complex congenital heart disease, particularly single ventricle physiology, have significantly improved.
• The Fontan operation enables survival into adulthood for patients with a single functional ventricle.
• Despite advances, significant knowledge gaps remain regarding the pulmonary circulation in single ventricle patients.

Purpose of the Study:

• To review current knowledge of the pulmonary circulation in single ventricle patients, especially post-Fontan operation.
• To aid practitioners in assessing pulmonary circulation in this patient group.
• To discuss evidence-based treatment strategies for optimizing pulmonary circulation.

Main Methods:

• Comprehensive review of existing literature on pulmonary circulation in single ventricle patients.
• Analysis of factors affecting pulmonary circulation, including anatomy, interventions, and complications.
• Discussion of assessment tools and treatment approaches.

Main Results:

• The Fontan operation has achieved >50% freedom from failure at 25 years.
• Pulmonary circulation is influenced by unique patient anatomy, surgical palliation stages, and complications.
• Identified complications include aortopulmonary collaterals, protein-losing enteropathy, plastic bronchitis, and venovenous collaterals.

Conclusions:

• Optimizing pulmonary circulation is crucial for long-term outcomes in single ventricle patients.
• Further research is needed to fully understand and manage pulmonary circulation complexities.
• A multi-faceted approach is required to assess and treat pulmonary issues in this population.