Taiwanese Journal of Obstetrics and Gynecology
Volume 46, Issue 4 , Pages 417-422, December 2007

Prenatal Diagnosis and Perinatal Management of Maternal—Fetal Congenital Parvovirus B19 Infection

Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung, Taiwan

Accepted 25 April 2007.

Article Outline

SUMMARY 

Objective

In nonimmune pregnant woman, the primary infection with parvovirus B19 may lead to transplacen-tal transmission to the fetus with variable outcomes, including congenital anemia, hydrops fetalis, fetal death or spontaneous resolution.

Case Report

In the first case, a 28-year-old woman, gravida 2, para 1, whose fetus was found to have left-sided pleural effusion on a sonogram at 29 weeks of gestation. A sample of aspirated pleural fluid was positive for parvovirus B19 by polymerase chain reaction. Cordocentesis showed fetal hemoglobin level of 5.0 g/dL. Intra-peritoneal transfusion (IPT) was performed, because access to the fetal circulation was difficult. Thirty milliliters of group O, Rh-positive packed red cells were transfused into the peritoneal cavity. A non-hydropic baby weighing 2,680 g was delivered at 33 weeks of gestation. The neonate's complete blood count examination showed a hemoglobin level of 16.3 g/dL. The newborn baby was discharged in stable condition. In the second case, a 31-year-old woman, gravida 2, para 1, whose fetus was found to have ascites, hypertrophic cardiomyopathy, and placen-tomegaly on a sonogram at 23 weeks of gestation. An amniotic fluid sample was positive for parvovirus B19 DNA by polymerase chain reaction. Fetal ascites and hypertrophic cardiomyopathy gradually resolved after maternal iron supplementation and 2 weeks of intrauterine digitalization therapy. A healthy infant weighing 3,198 g was delivered at 37 weeks of gestation. The neonate's complete blood count examination showed a hemoglobin level of 10.3 g/dL.

Conclusion

Termination of pregnancy is rarely indicated, because B19 virus is not teratogenic. Although intravascular transfusion offers obvious theoretical advantages, in some cases in which access to the fetal circulation is difficult or impossible, IPT should be performed combined with appropriate medical treatment. Thus, there is still a place for IPT in modern management of the severely anemic fetus, and this technique should not be neglected.

Key Words:  hydrops fetalis , intraperitoneal transfusion , parvovirus B19

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PII: S1028-4559(08)60014-5

doi:10.1016/S1028-4559(08)60014-5

Taiwanese Journal of Obstetrics and Gynecology
Volume 46, Issue 4 , Pages 417-422, December 2007

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