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. 2020 Feb;127(3):355-362.
doi: 10.1111/1471-0528.15935. Epub 2019 Oct 15.

Refining the prognosis of fetuses infected with Cytomegalovirus in the first trimester of pregnancy by serial prenatal assessment: a single-centre retrospective study

V Faure-Bardon  1   2 , A-E Millischer  1   3 , B Deloison  1   2 , P Sonigo  1   3 , D Grévent  1   3 , L Salomon  1   2 , J Stirnemann  1   2 , M Nicloux  1   4 , J-F Magny  1   4 , M Leruez-Ville  1   5 , Y Ville  1   2
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Refining the prognosis of fetuses infected with Cytomegalovirus in the first trimester of pregnancy by serial prenatal assessment: a single-centre retrospective study

V Faure-Bardon et al. BJOG. 2020 Feb.

Abstract

Objective: To define the predictive value (PV) of known prognostic factors of fetal infection with Cytomegalovirus following maternal primary infection <14 weeks of gestation, at different time points of pregnancy: the end of the second trimester; following prenatal magnetic resonance imaging (MRI) at 32 weeks of gestation; and using all ultrasound scans performed in the third trimester (US3rdT).

Design: A retrospective study.

Setting: Reference fetal medicine unit.

Population: Sixty-two fetuses infected <14 weeks of gestation.

Methods: We defined second-trimester assessment (STA) as the combination of ultrasound findings <28 weeks of gestation and fetal platelet count at cordocentesis. Three groups were defined: normal, extracerebral, and cerebral STA.

Main outcome measures: For each group, the PV of STA alone, STA + MRI, and STA + US3rdT were assessed retrospectively. Outcome at birth and at follow-up were reported.

Results: The STA was normal, and with extracerebral and cerebral features, in 43.5, 42.0, and 14.5%, respectively. The negative PV of normal STA and MRI for moderate to severe sequelae was 100%. The residual risk was unilateral hearing loss in 16.7% of cases. Of pregnancies with cerebral STA, 44% were terminated. Following extracerebral STA, 48% of neonates were symptomatic and 30% had moderate to severe sequelae. In those cases, the positive and negative PV of MRI for sequelae were 33 and 73%, respectively. STA + US3rdT had a lower negative PV than MRI for symptoms at birth and for moderate to severe sequelae. Any false-positive findings at MRI were mostly the result of hypersignals of white matter.

Conclusions: Serial assessment in the second and third trimesters by ultrasound and MRI is necessary to predict the risk of sequelae occurring in 35% of pregnancies following fetal infection in the first trimester of pregnancy.

Tweetable abstract: Serial ultrasound prognostic assessment following fetal CMV infection in the 1st trimester is improved by MRI at 32 weeks.

Keywords: Congenital Cytomegalovirus infection; cordocentesis; magnetic resonance imaging; prognostic; ultrasound.

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