ESTeSL, Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Portugal; Univ Lisboa, Fac Motricidade Humana, CIPER, LBMF, P-1499-002 Lisboa, Portugal.
Univ Lisboa, Fac Motricidade Humana, CIPER, LBMF, P-1499-002 Lisboa, Portugal.
Musculoskelet Sci Pract. 2018 Jun;35:34-37. doi: 10.1016/j.msksp.2018.02.004. Epub 2018 Feb 20.
Longitudinal descriptive exploratory study.
Evaluate the normal width of the linea alba in first-time pregnant women during pregnancy and postpartum.
There are normative values on the width of the linea alba for nulliparous women, but limited knowledge about the normal width of the inter-rectus distance (IRD) in pregnant and postpartum women.
Ultrasound images were recorded in 84 primiparous women, at 3 locations on the linea alba (2 cm below the umbilicus, and 2 and 5 cm above the umbilicus) and at 4 time points (gestational weeks 35-41 and 6th to 8th, 12th to 14th, and 24th to 26th weeks postpartum). The 20th and 80th percentiles were used to define the normal width of the linea alba.
During pregnancy, the 20th and the 80 percentile corresponded to 49-79 mm below the umbilicus, 54-86 mm at 2 cm above the umbilicus and 44-79 mm at 5 cm above the umbilicus. At 6 months postpartum, the 20th and the 80 percentile corresponded to 9-21 mm at 2 cm below the umbilicus, from 17 to 28 mm at 2 cm above the umbilicus and from 12 to 24 mm at 5 cm above the umbilicus.
Different normative values for the width of the linea alba were found at different locations of the anterior abdominal wall. In primiparous women, the IRD may be considered "normal" up to values wider than in nulliparous.
纵向描述性探索性研究。
评估初产妇在怀孕期间和产后白线的正常宽度。
已有关于初产妇白线宽度的正常值，但关于孕妇和产后妇女腹直肌间距离（IRD）正常宽度的知识有限。
对 84 名初产妇的白线在 3 个部位（脐下 2cm 及脐上 2cm 和 5cm）和 4 个时间点（妊娠 35-41 周和产后第 6-8 周、第 12-14 周及第 24-26 周）进行超声图像记录。第 20 和第 80 百分位数用于定义白线的正常宽度。
在怀孕期间，第 20 和第 80 百分位数分别对应脐下 49-79mm、脐上 2cm 处 54-86mm 和脐上 5cm 处 44-79mm。产后 6 个月，第 20 和第 80 百分位数分别对应脐下 2cm 处 9-21mm、脐上 2cm 处 17-28mm 和脐上 5cm 处 12-24mm。
在前腹壁的不同部位发现了白线宽度的不同正常值。在初产妇中，IRD 可能被认为“正常”，其宽度大于未产妇。
