Tweddell SM, Bahr TM, Henry E, Page JM, Ilstrup SJ, Ohls RK, Christensen RD. Placental abruption and neonatal anemia.
J Perinatol 2023;
43:782-786. [PMID:
36650233 DOI:
10.1038/s41372-023-01603-w]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 01/19/2023]
Abstract
OBJECTIVE
Placental abruption can cause maternal blood loss and maternal anemia. It is less certain whether abruption can cause fetal blood loss and neonatal anemia.
STUDY DESIGN
Retrospective multi-hospital 24-month analysis of women with placental abruption and their neonates.
RESULTS
Of 55,111 births, 678 (1.2%) had confirmed abruption; 83% of these neonates (564) had one or more hemoglobins recorded in the first day. Four-hundred-seventy (83.3%) had a normal hemoglobin (≥5th% reference interval) while 94 (16.7%) had anemia, relative risk 3.26 (95% CI, 2.66-4.01) vs. >360,000 neonates from previous reference interval reports. The relative risk of severe anemia (<1st% interval) was 4.96 (3.44-7.16). When the obstetrician identified the abruption as "small" or "marginal" the risk of anemia was insignificant.
CONCLUSIONS
Most abruptions do not cause neonatal anemia but approximately 16% do. If an abruption is not documented as small, it is important to surveille the neonate for anemia.
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