在没有全身抗凝系统的新生儿发育 (EXTEND) 系统的子宫外环境中对氧化剂的评估
Seitaro Kosaka1, Urgyen Wangmo1, Marina Heffelfinger1
1From the Center for Fetal Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
概括
这项研究表明,实验性氧化器 (Exp-Ox) 在新生儿发育外宫环境 (EXTEND) 系统中有效地运行超过14天,没有肝素,降低了早产婴儿的风险.
科学领域:
- 生物医学工程 生物医学工程
- 新生儿研究新生儿研究
- 医疗器械开发 医疗器械开发
背景情况:
- 在新生儿人工子宫系统中使用肝素存在风险,特别是早产婴儿的内出血.
- 开发无肝素替代品对于推进新生儿体外支持至关重要.
- 实验氧化器 (Exp-Ox) 设计的表面积小,原始体积低,用于EXTEND系统.
研究的目的:
- 在无肝素体外支持系统中评估Exp-Ox的耐用性和血液兼容性.
- 为了比较无肝素的EXTEND系统中的Exp-Ox性能与基于肝素的标准系统.
- 评估长期 (超过14天) 在早产羊羔中提供无肝素支持的可行性.
主要方法:
- 在EXTEND系统中使用过早的羔羊 (91-93天妊娠年龄) 的比较研究.
- 研究了两个组:一个用标准的氨酸抗凝剂,一个没有 (无氨酸).
- 通过CT扫描评估氧气和CO2转移,氧气转移效率,以及定量凝块负担.
主要成果:
- 氧气和二氧化碳的转移在两组中保持稳定,氧气转移效率没有显著差异 (p=0.61).
- 在Exp-Ox中,凝块负担在无肝素组 (1.28-11.77%) 与肝素组 (3.91-29.94%) (p=0.15) 相比显著较低.
- 在没有全身抗凝药的情况下,Exp-Ox在14天以上的时间内保持了功能和血液兼容性.
结论:
- 在EXTEND系统中,Exp-Ox是一种耐用且血液相容的氧化器,可长时间使用.
- 埃克斯-奥克斯的成功无氨酸运行证明了更安全的新生儿人工子宫技术的潜力.
- 这一发现支持开发人工子宫系统,最大限度地降低与全身抗凝药相关的风险.
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