Discrepancy in term calculation from second trimester ultrasound scan versus last menstrual period in women with type 1 diabetes

Eidem, Ingvild; Vangen, Siri; Henriksen, Tore; Vollset, Stein Emil; Hanssen, Kristian F.; Joner, Geir; Stene, Lars C.

doi:10.1111/aogs.12422

Cited by 1 publication

(1 citation statement)

References 42 publications

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“…The association of maternal diabetes with negative discrepancies confirms the results of other studies . In a Norwegian study, women with type 1 diabetes had negative discrepancies of seven or more days in 25% of pregnancies, and 14 or more days in 10% of pregnancies, compared with a certain LMP date, with a risk of going beyond the optimal pregnancy length because of systematic postponement of EDD‐US .…”

Section: Discussionsupporting

confidence: 85%

Maternal and fetal characteristics affect discrepancies between pregnancy‐dating methods: a population‐based cross‐sectional register study

Wesström

Kieler

Skalkidou

2016

Acta Obstet Gynecol Scand

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IntroductionGestational age is estimated by ultrasound using fetal size as a proxy for age, although variance in early growth affects reliability. The aim of this study was to identify characteristics associated with discrepancies between last menstrual period‐based (EDD‐LMP) and ultrasound‐based (EDD‐US) estimated delivery dates.Material and methodsWe identified all singleton births (n = 1 201 679) recorded in the Swedish Medical Birth Register in 1995–2010, to assess the association between maternal/fetal characteristics and large negative and large positive discrepancies (EDD‐LMP earlier than EDD‐US and 10th percentile in the discrepancy distribution vs. EDD‐LMP later than EDD‐US and 90th percentile). Analyses were adjusted for age, parity, height, body mass index, smoking, and employment status.ResultsWomen with a body mass index >40 kg/m2 had the highest odds for large negative discrepancies (−9 to −20 days) [odds ratio (OR) 2.16, 95% CI 2.01–2.33]. Other factors associated with large negative discrepancies were: diabetes, young maternal age, multiparity, body mass index between 30 and 39.9 kg/m2 or <18.5 kg/m2, a history of gestational diabetes, female fetus, shorter stature (<−1 SD), a history of preeclampsia, smoking or snuff use, and unemployment. Large positive discrepancies (+4 to +20 days) were associated with male fetus (OR 1.80, 95% CI 1.77–1.83), age ≥30 years, multiparity, not living with a partner, taller stature (>+1 SD), and unemployment.ConclusionsSeveral maternal and fetal characteristics were associated with discrepancies between dating methods. Systematic associations of discrepancies with maternal height, fetal sex, and partly obesity, may reflect an influence on the precision of the ultrasound estimate due to variance in early growth.

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Section: Discussionsupporting

confidence: 85%

Maternal and fetal characteristics affect discrepancies between pregnancy‐dating methods: a population‐based cross‐sectional register study

Wesström

Kieler

Skalkidou

2016

Acta Obstet Gynecol Scand

View full text Add to dashboard Cite

show abstract

Discrepancy in term calculation from second trimester ultrasound scan versus last menstrual period in women with type 1 diabetes

Abstract: We found a systematic postponement of ultrasound-based compared with menstrual-based term estimation in women with type 1 diabetes. Relying solely on routine ultrasound-based term calculation for delivery decision may imply a risk of going beyond an optimal pregnancy length.

Cited by 1 publication

References 42 publications

Maternal and fetal characteristics affect discrepancies between pregnancy‐dating methods: a population‐based cross‐sectional register study

Maternal and fetal characteristics affect discrepancies between pregnancy‐dating methods: a population‐based cross‐sectional register study

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