Maternal-fetal alloimmunization: perinatal outcomes in a reference hospital in Northeastern Brazil
Rev. Assoc. Med. Bras. (1992)
;
68(5): 670-674, May 2022. tab
Article
in English
|
LILACS-Express
| LILACS
| ID: biblio-1376190
ABSTRACT
SUMMARY OBJECTIVE:
To assess the prevalence of maternal alloantibodies in pregnant women at a maternity hospital in northeastern Brazil and describe their perinatal outcomes.METHODS:
A retrospective cohort study reviewed maternal and newborn medical records between January 2017 and October 2018 to assess for the presence of maternal alloantibodies.RESULTS:
The following maternal alloantibodies were found in the 41 cases surveyed anti-D, 28 cases (45%); anti-C, 7 cases (11%); anti-c, 1 case (1.6%); anti-E, 4 cases (6.4%); anti-Cw, 1 case (1.6%); anti-K, 2 cases (3.2%); anti-Jka, 1 case (1.6%); anti-M, 3 cases (4.8%); anti-Fya, 2 cases (3.2%); anti-Fyb, 1 case (1.6%); anti-Lea, 5 cases (8%); anti-Leb, 3 cases (4.8%); and anti-Dia, 4 cases (6.4%). Anti-D antibodies were the most frequent cause of erythrocyte alloimmunization (80%). Fetal anemia was observed in four pregnancies based on the peak systolic velocity of the middle cerebral artery. In one case, the mother showed anti-M, and anti-Lea alloimmunization, but the direct antiglobulin test results for the newborn were negative, and no unfavorable neonatal outcomes were observed. In one case of a mother with anti-C and anti-D alloimmunization, the neonate showed anti-D antibodies only in the serological panel and required phototherapy. Neonates with plasma antibodies and jaundice requiring phototherapy only had a serological panel with anti-D, anti-C, anti-c, and anti-E antibodies. Intervention was required for 2.5% of pregnant women with positive antibody screens and 81% of newborns with positive direct antiglobulin test results.CONCLUSION:
Despite being a rare condition, maternal alloimmunization by irregular antibodies can result in high perinatal morbidity and mortality.
Full text:
Available
Index:
LILACS (Americas)
Type of study:
Observational study
/
Risk factors
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Rev. Assoc. Med. Bras. (1992)
Year:
2022
Type:
Article
Affiliation country:
Brazil
/
Italy
Institution/Affiliation country:
Azienda Unità Sanitaria Locale di Reggio Emilia/IT
/
Universidade Federal de São Paulo/BR
/
Universidade Federal do Ceará/BR
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