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Sustained maternal hyperoxygenation improves aortic arch dimensions in fetuses with coarctation
Shi Zeng1, Jiawei Zhou1, Qinghai Peng1
1Department of Ultrasonography, The Second Xiangya Hospital, Central South University, Changsha, P.R. China.
Scientific Reports
|December 17, 2016
Summary
Maternal hyperoxygenation (HO) safely improves fetal heart dimensions in isolated Coarctation (CoA). Longer HO duration correlated with better aortic arch measurements, suggesting a potential treatment strategy.
Area of Science:
- Cardiology
- Fetal Medicine
- Neonatal Surgery
Background:
- Congenital heart defects like Coarctation of the Aorta (CoA) pose significant risks to fetal development.
- Understanding interventions that can positively impact fetal cardiac structure is crucial for improving outcomes.
Purpose of the Study:
- To investigate the effects of maternal hyperoxygenation (HO) on cardiac dimensions in fetuses diagnosed with isolated Coarctation (CoA).
- To assess the safety and efficacy of HO as a potential therapeutic strategy for fetal CoA.
Main Methods:
- Serial fetal echocardiography was conducted on 48 fetuses with isolated CoA and matched controls.
- Mothers in the HO group received 6 L/min oxygen via face mask; a control group received air.
- Z-scores for various cardiac structures, including valves and great arteries, were measured and compared.
Main Results:
- Fetuses exposed to maternal HO showed a significant increase in left heart dimension Z-scores, particularly after 4 weeks of therapy (P < 0.05).
- The control group receiving air showed no significant changes in left heart dimensions.
- The duration of HO was positively associated with improved Z-scores for the ascending aorta and aortic isthmus.
Conclusions:
- Sustained maternal hyperoxygenation appears to be a safe and effective method for enhancing left heart dimensions in fetuses with isolated CoA.
- The duration of HO therapy is a key factor influencing treatment outcomes.
- These findings support the development of novel therapeutic strategies for fetal CoA.
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