期刊
PRENATAL DIAGNOSIS
卷 30, 期 8, 页码 719-726出版社
WILEY
DOI: 10.1002/pd.2536
关键词
selective intrauterine growth restriction; monochorionic twins; arterio-arterial anastomosis; Doppler
资金
- Spanish Fondo de Investigaciones Sanitarias
Selective intrauterine growth restriction (sIUGR) occurs in 10 to 15% of monochorionic (MC) twins, and it is associated with a substantial increase in perinatal mortality and morbidity. Clinical evolution is largely influenced by the existence of intertwin placental anastomoses: pregnancies with similar degrees of fetal weight discordance are associated with remarkable differences in clinical behavior and outcome. We have proposed a classification of slUGR into three types according to umbilical artery (UA) Doppler findings (I-normal. II-absent/reverse end-diastolic flow, III-intermittent absent/reverse end-diastolic flow), which correlates with distinct clinical behavior, placental features and may assist in counseling and management. In terms of prognosis, slUGR can roughly be divided in two groups: type I cases, with a fairly good outcome, and types II and ill, with a substantial risk for a poor outcome. Management of types II and III may consist in expectant management until deterioration of the IUGR fetus is observed, with the option of cord occlusion if this occurs before viability. Alternatively, active management can be considered electively, including cord occlusion or laser coagulation. Both therapies seem to increase the chances of intact survival of the larger fetus, while they entail, or increase the chances of, intrauterine demise of the IUGR fetus. Copyright (C) 2010 John Wiley & Sons, Ltd.
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