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Updated: May 7, 2026

Increasing Pulmonary Artery Pulsatile Flow Improves Hypoxic Pulmonary Hypertension in Piglets
Published on: May 11, 2015
Diagnosis and treatment of pulmonary hypertension in infancy
1Department of Pediatrics, University of California Davis Children's Hospital, Sacramento, CA, United States.
Insights
Infant pulmonary hypertension arises from impaired lung development, affecting growth and function. Effective treatments target pulmonary vascular resistance (PVR) by understanding altered signaling pathways in remodeled lung vasculature.
Area of Science:
- Pediatric Pulmonology
- Neonatal Physiology
- Vascular Biology
Background:
- Normal pulmonary vascular development in infancy is crucial for lung function and growth.
- Adverse influences on the developing lung can lead to pulmonary hypertension in infants.
- Pulmonary hypertension in neonates is associated with conditions like PPHN, CDH, and BPD.
Purpose of the Study:
- To review the factors affecting normal pulmonary vascular development in infants.
- To discuss the classification of pulmonary hypertension in neonates.
- To highlight current pharmacotherapeutic strategies for infant pulmonary hypertension.
Main Methods:
- Literature review of pulmonary vascular development and infant pulmonary hypertension.
- Analysis of current classifications for pediatric pulmonary hypertension.
- Examination of pharmacotherapeutic targets for pulmonary hypertension in infants.
Main Results:
- Pulmonary hypertension in infants results from disrupted lung adaptation and development.
- New classifications are emerging to categorize diverse pulmonary hypertension phenotypes in neonates.
- Targeting pulmonary vascular resistance (PVR) is key for treating PPHN.
Conclusions:
- Understanding altered signaling pathways in remodeled vasculature is essential for effective treatment.
- Pharmacotherapeutic strategies for infant PPHN focus on selective PVR reduction.
- Continued research into the mechanisms of infant pulmonary hypertension is vital.
Abstract:
Normal pulmonary vascular development in infancy requires maintenance of low pulmonary vascular resistance after birth, and is necessary for normal lung function and growth. The developing lung is subject to multiple genetic, pathological and/or environmental influences that can adversely affect lung adaptation, development, and growth, leading to pulmonary hypertension. New classifications of pulmonary hypertension are beginning to account for these diverse phenotypes, and or pulmonary hypertension in infants due to PPHN, congenital diaphragmatic hernia, and bronchopulmonary dysplasia (BPD). The most effective pharmacotherapeutic strategies for infants with PPHN are directed at selective reduction of PVR, and take advantage of a rapidly advancing understanding of the altered signaling pathways in the remodeled vasculature.
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