The Relationship Between Birthweight Discordance and Perinatal Mortality of One of the Twins in a Twin Pair

Kato, Noriko; Matsuda, Tomohiro

doi:10.1375/183242706776382365

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…The twinning rate per 1000 births was 6.4 in 1951 and increased to 9.9 in 2001 (Imaizumi, 2003). The mortality rate of twin infants is higher than that of singleton infants (Imaizumi, 2001;Kato & Matsuda, 2006), and morbidity associated with multiple births including twinning is an important public health problem.…”

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confidence: 99%

Comparison of Motor Development Between Twins and Singletons in Japan: A Population-Based Study

Yokoyama¹,

Wada

Sugimoto

et al. 2007

Twin Res Hum Genet

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This study was performed using population-based data to analyze whether motor development in early life is different between singletons and twins in Japan. For better comparison and investigation, we divided the 2 groups into a group with a birthweight of 2.5 kg or greater (subgroup A) and a group with a birthweight of less than 2.5 kg (subgroup B), respectively. We analyzed the database of medical check-ups for children aged 3 years between April 2001 and July 2004. They received medical checkups at 4 months, 1.5, and 3 years of age. Children who were suspected of having neurological abnormality or disability were referred to specialists and excluded from the database. The data of 14,132 children were analyzed. Among these, 13,040 (92.3%) children were singletons in subgroup A, 75 (0.5%) were twins in subgroup A, 866 (6.1%) were singletons in subgroup B and 151 (1.1%) were twins in subgroup B. The mean age at achieving milestones was slower in twins of subgroup A for each developmental outcome than singletons of subgroup A, and the difference between twins and singletons was significant after adjustment for rolling over. On the contrary, after adjusting for a confounding factor (gestational age), singletons of subgroup B attained motor development facilitating walking independently slower than twins of subgroup B. There were different tendencies in the results regarding the motor development of subjects of subgroup A and that of subjects of subgroup B.

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mentioning

confidence: 99%

Comparison of Motor Development Between Twins and Singletons in Japan: A Population-Based Study

Yokoyama¹,

Wada

Sugimoto

et al. 2007

Twin Res Hum Genet

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“…It is now well accepted that fetal birthweight discordance is a risk factor for adverse outcomes in multiple pregnancy, even when the smaller fetus is appropriately grown for gestational age . In the past, a discordance of 20% to 25% was arbitrarily used as being clinically significant, but it now appears that a lower threshold of greater than 18% is associated with increased perinatal risks.…”

Section: New Possibilities Beyond Lga/macrosomiamentioning

confidence: 99%

The use of magnetic resonance imaging in the prediction of birthweight

et al. 2019

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Extremes of fetal growth can increase adverse pregnancy outcomes, and this is equally applicable to single and multiple gestations. Traditionally, these cases have been identified using simple two‐dimensional ultrasound which is quite limited by its low precision. Magnetic resonance imaging (MRI) has now been used for many years in obstetrics, mainly as an adjunct to ultrasound for congenital abnormalities and increasingly as part of the post‐mortem examination. However, MRI can also be used to accurately assess fetal weight as first demonstrated by Baker et al in 1994, using body volumes rather than standard biometric measurements. This publication was followed by several others, all of which confirmed the superiority of MRI; however, despite this initial promise, the technique has never been successfully integrated into clinical practice. In this review, we provide an overview of the literature, detail the various techniques and formulas currently available, discuss the applicability to specific high‐risk groups and present our vision for the future of MRI within clinical obstetrics.

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“…BWD is a risk factor for perinatal mortality in the USA (Branum & Schoendorf, 2003;Kim et al, 2019), Japan (Kato & Matsuda, 2006) and Canada (Jahanfar et al, 2017). It is also a risk factor for neonatal mortality (Branum & Schoendorf, 2003;Demissie et al, 2002;Kim et al, 2019;Mazhar & Kanwal, 2010;Tobe et al, 2010).…”

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The Relationship between Birth Weight Discordance and Adverse Infant Mortality among Monozygotic and Dizygotic Twins in Japan, 1995–2008

Imaizumi

2020

Twin Res Hum Genet

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Using vital statistics in Japan (1995–2008), 154,578 live-born twin pairs (128,236 monozygotic [MZ] and 180,920 dizygotic [DZ]) were identified. The proportion of severe discordance among live-born twin births was twice as high in Japanese than Caucasian infants. There were 1858 MZ and 1620 DZ infant deaths. Computation of the relationship between infant mortality rate and birth weight discordance among the twins was performed. Discordance levels were classified into seven groups: <5%, five groups from 5–9% to 25–29%, and ≥30%.The mortality rate was significantly higher in MZ than DZ twins for discordances except at 5–9% and 10–14%. The lowest rate for MZ twins was at 5–9% (7.5 per 1000 live twins) and significantly increased from 10–14% (9.4) to ≥30% (83.4), while the lowest rate for DZ twins was at <5% (6.7), which significantly increased at 10–14% (8.0) and from 25–29% (12.1) to ≥30% (35.5). The relationship was also computed in two gestational age groups (<28 and ≥28 weeks). For births at <28 weeks, three discordances (after 20–24%) in MZ twins were associated with adverse mortality rate. For births at ≥28 weeks, the same relationship was obtained after 10–14% in MZ and after 20–24% in DZ twins. The relationship from 2002 to 2008 showed that the mortality rates significantly increased after 10–14% for both types of twins. In conclusion, five discordance levels in MZ and three levels in DZ twins were associated with adverse mortality rates.

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The Relationship Between Birthweight Discordance and Perinatal Mortality of One of the Twins in a Twin Pair

Cited by 5 publications

References 18 publications

Comparison of Motor Development Between Twins and Singletons in Japan: A Population-Based Study

Comparison of Motor Development Between Twins and Singletons in Japan: A Population-Based Study

The use of magnetic resonance imaging in the prediction of birthweight

The Relationship between Birth Weight Discordance and Adverse Infant Mortality among Monozygotic and Dizygotic Twins in Japan, 1995–2008

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