Multiple pregnancies are known to have fetal growth
restriction as one of the common complications, and account
for up to 3 % of all cases of IUGR. Multiple
pregnancies are at fivefold to tenfold higher risk of IUGR
compared with singleton pregnancies with 15-30 % incidence
of fetal growth restriction in twins [54]. The risk of
fetal growth restriction depends on a variety of factors,
including number of fetuses, chorionicity, presence of
congenital anomaly or umbilical cord abnormalities, such
as velamentous cord insertion or two-vessel cord, unequal
placenta sharing with selective IUGR, presence of twintwin
transfusion syndrome, conjoint twin, acardia, and
maternal under nutrition [55, 56•]. Multiple pregnancies
have a growth rate similar to singleton pregnancy until 30–
32 weeks [57], after which the growth velocities of abdominal
circumference, femur length, and biparietal diameter are
noted to decrease. Growth discordance of 15-25 % or
higher is associated with increased risk of neonatal morbidity
and mortality
Multiple pregnancies are known to have fetal growthrestriction as one of the common complications, and accountfor up to 3 % of all cases of IUGR. Multiplepregnancies are at fivefold to tenfold higher risk of IUGRcompared with singleton pregnancies with 15-30 % incidenceof fetal growth restriction in twins [54]. The risk offetal growth restriction depends on a variety of factors,including number of fetuses, chorionicity, presence ofcongenital anomaly or umbilical cord abnormalities, suchas velamentous cord insertion or two-vessel cord, unequalplacenta sharing with selective IUGR, presence of twintwintransfusion syndrome, conjoint twin, acardia, andmaternal under nutrition [55, 56•]. Multiple pregnancieshave a growth rate similar to singleton pregnancy until 30–32 weeks [57], after which the growth velocities of abdominalcircumference, femur length, and biparietal diameter arenoted to decrease. Growth discordance of 15-25 % orhigher is associated with increased risk of neonatal morbidityand mortality
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การตั้งครรภ์หลายเป็นที่รู้จักกันที่จะมีการเจริญเติบโตของทารกในครรภ์ข้อ จำกัด เป็นหนึ่งของภาวะแทรกซ้อนที่พบบ่อยและบัญชีได้ถึง3% Multiple pregnancies are known to have fetal growth
restriction as one of the common complications, and account
for up to 3 % of all cases of IUGR. Multiple
pregnancies are at fivefold to tenfold higher risk of IUGR
compared with singleton pregnancies with 15-30 % incidence
of fetal growth restriction in twins [54]. The risk of
fetal growth restriction depends on a variety of factors,
including number of fetuses, chorionicity, presence of
congenital anomaly or umbilical cord abnormalities, such
as velamentous cord insertion or two-vessel cord, unequal
placenta sharing with selective IUGR, presence of twintwin
transfusion syndrome, conjoint twin, acardia, and
maternal under nutrition [55, 56•]. Multiple pregnancies
have a growth rate similar to singleton pregnancy until 30–
32 weeks [57], after which the growth velocities of abdominal
circumference, femur length, and biparietal diameter are
noted to decrease. Growth discordance of 15-25 % or
higher is associated with increased risk of neonatal morbidity
and mortality
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