拉顶氏征象
拉顶氏征象（Ladin's sign）是一种怀孕的医学征象[1]，是指子宫和子宫颈交界处的前方中线处变软的情形，约在孕期六周时出现，而且可以用人工检查来发现[2]。
若妇女认为有怀孕可能，进行第一次的骨盆检查时，一般就会出现拉顶氏征象[3]。子宫颈长度在怀孕期间也很重要，子宫颈长度过短可能会增加早产以及分娩的可能性，而在分娩开始时，子宫颈长度会自然缩短[4]。受孕造成的子宫颈软化以及其他怀孕的早期征象，有助于医师诊断是否怀孕[5]。
子宫颈软化的原因，除了拉顶氏征象以外，在怀孕时也可能会有子宫颈异常软化，因此需要透过包括剪力波速度量测（sheer wave speed measurement）在内的检查，来区分正常的拉顶氏征象以及异常的子宫颈软化[6]。
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编辑- ^ Katherine McLaren. Nursing Study Guide: Your Nursing Assistant To Do Well In School. Katherine McLaren. : 39–. GGKEY:PP0HZRR9PY6.
- ^ Alan H. DeCherney, Martin L. Pernoll, Lauren Nathan. Current Obstetric & Gynecologic Diagnosis & Treatment, page 196. McGraw-Hill Professional, 2002. ISBN 978-0-8385-1401-6. Google books
- ^ Clinical examination of pregnant women. NICE Clinical Guidelines (National Collaborating Centre for Women's and Children's Health). March 2008.
|issue=被忽略 (帮助) - ^ Cervical length: Why does it matter during pregnancy? - Mayo Clinic. www.mayoclinic.org. [2018-11-07] （英语）.
- ^ Badir S, Mazza E, Zimmermann R, Bajka M. Cervical softening occurs early in pregnancy: characterization of cervical stiffness in 100 healthy women using the aspiration technique. Prenatal Diagnosis. August 2013, 33 (8): 737–41. PMID 23553612. S2CID 25260888. doi:10.1002/pd.4116.
- ^ Rosado-Mendez IM, Carlson LC, Woo KM, Santoso AP, Guerrero QW, Palmeri ML, Feltovich H, Hall TJ. Quantitative assessment of cervical softening during pregnancy in the Rhesus macaque with shear wave elasticity imaging. Physics in Medicine and Biology. April 2018, 63 (8): 085016. Bibcode:2018PMB....63h5016R. PMC 5908736
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