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Prenatal diagnosis of twin reversed arterial perfusion by ultrasonography-3 cases report
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF PERINATAL MEDICINE
- Issue:
- 4
- DOI:
- 10.3760/cma.j.issn.1007-9408.2007.04.010
- Key Word:
- 妊娠,多胎;畸胎;超声检查,产前;超声检查,多普勒,彩色
Abstract： 目的 探讨双胎无心反向动脉灌注(twin reversed arterial perfusion TRAP)的产前超声声像图特征.方法 回顾性分析3例产前超声诊断为TRAP的超声图像与随访结果,总结声像图特点.结果 2例产后病检证实为TRAP,1例失访.TRAP的特点是,双胎或三胎中均有一个胎儿无头无心畸形,胸腹腔内没有正常内脏结构,无正常上肢结构,可见下肢及下肢运动.皮肤及皮下组织明显增厚,均为单脐动脉;彩色多普勒显示无心胎儿体内出现没有心脏的血液循环通路;频谱多普勒记录到进入胎儿体内脐血管为动脉频谱,出胎儿腹壁的脐血管为静脉频谱,形成了与正常胎儿灌注方向完全相反的灌注特点.结论 多胎妊娠中(包括双胎和三胎)若有单卵双胎,且其中之一伴有严重畸形、无心脏结构与搏动,彩色多普勒记录到进入无心胎儿体内的脐血管为动脉频谱,出胎儿的血管为静脉频谱,为TRAP的重要声像图特征.
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