从预防到分娩:在28周的产前抗D后评估抗体查反应性
Mehmet Genco1, Merve Genco2, Hüseyin Aksoy1
1Department of Obstetrics and Gynecology, Kayseri City Hospital, Kayseri, Türkiye.
概括
在28周服用单剂量抗D免疫球蛋白后,三分之二的RhD阴性妇女在孕期没有可检测的抗体. 这突出了潜在的覆盖率差距,需要评估替代剂量策略,以防止RhD与免疫接种.
科学领域:
- 产科和妇科 产科和妇科
- 免疫学 免疫学 免疫学
- 围产儿医学 围产儿医学
背景情况:
- 常规的产前抗D免疫球蛋白预防是给RhD阴性妇女,以防止新生儿的溶血性疾病.
- 标准剂量和时间旨在在整个怀孕和分娩期间提供保护.
- 影响长期抗D抗体持久性的因素需要进一步调查.
研究的目的:
- 评估在 RhD 阴性妇女中预先治疗的抗D 免疫球蛋白的血清检测能力.
- 在怀孕28周一次300μg剂量后,确定与抗D抗体损失相关的因素.
主要方法:
- 对915例RhD阴性怀孕的回顾性队列研究.
- 间接抗球蛋白检测 (IAT) 在分娩前72小时内进行.
- 统计分析包括独立样本 t 试验和 χ2 试验.
主要成果:
- 在孕期只有33%的女性中可以检测到抗D抗体.
- 67%的女性测试IAT阴性,表明抗体损失.
- 晚期的预防治疗和更长的分娩间隔与无法检测到的抗体水平有关.
结论:
- 在28周,一次300μg的抗D剂量导致绝大多数 RhD 阴性孕妇的血清学不可检测性.
- 这表明怀孕晚期存在潜在的覆盖差距.
- 建议对替代策略进行前性评估,例如额外的剂量或调整时间,以尽量减少RhD与免疫接种.
相关概念视频
01:19Rh Blood Group
The Rhesus (Rh) antigen is crucial in determining blood groups and ensuring compatibility during blood transfusions.
01:22Development of Immunocompetence
The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...