Pulmonary Vascular Regulation in the Fetal and Transitional Lung.
Clin Perinatol
; 51(1): 1-19, 2024 03.
Article
em En
| MEDLINE
| ID: mdl-38325936
ABSTRACT
Fetal lungs have fewer and smaller arteries with higher pulmonary vascular resistance (PVR) than a newborn. As gestation advances, the pulmonary circulation becomes more sensitive to changes in pulmonary arterial oxygen tension, which prepares them for the dramatic drop in PVR and increase in pulmonary blood flow (PBF) that occur when the baby takes its first few breaths of air, thus driving the transition from fetal to postnatal circulation. Dynamic and intricate regulatory mechanisms control PBF throughout development and are essential in supporting gas exchange after birth. Understanding these concepts is crucial given the role the pulmonary vasculature plays in the development of complications with transition, such as in the setting of persistent pulmonary hypertension of the newborn and congenital heart disease. An improved understanding of pulmonary vascular regulation may reveal opportunities for better clinical management.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Feto
/
Pulmão
Limite:
Female
/
Humans
/
Newborn
/
Pregnancy
Idioma:
En
Revista:
Clin Perinatol
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Canadá