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[Immunohematologic study of ABO hemolytic disease].
1Centre de Transfusió i Banc de Teixits. Tarragona.
Anales Espanoles De Pediatria
|November 21, 2000
Summary
ABO-hemolytic disease, a condition arising from ABO-incompatibility between mother and fetus, is detectable with current tests and can lead to infant hemolysis. Hematocrit levels were lower in incompatible cases.
Area of Science:
- Perinatology
- Neonatology
- Immunology
Background:
- ABO-hemolytic disease is a potential complication of ABO-incompatibility between mother and fetus.
- Accurate diagnosis and understanding the impact on newborns are crucial.
Purpose of the Study:
- To analyze ABO-hemolytic disease cases within a specific center.
- To compare the efficacy of two serologic tests for diagnosing ABO-hemolytic disease.
- To evaluate hematocrit values in cord blood samples of affected newborns.
Main Methods:
- Blood typing (ABO and Rh(D)) was performed on 881 samples.
- Direct antiglobulin test (DAT) and eluate testing were conducted on umbilical cord blood.
- Microhematocrit values were determined for all samples.
Main Results:
- ABO-incompatibility was identified in 15.3% of cases.
- The eluate test was significantly more effective than DAT in identifying antibodies (68.4% vs. 31.6%).
- Infants with ABO-incompatibility exhibited lower cord blood hematocrit levels compared to ABO-compatible infants.
Conclusions:
- Current serologic tests can detect ABO incompatibility.
- While severe cases are rare, ABO incompatibility contributes to hemolysis in newborns.
- The study highlights the clinical relevance of monitoring ABO-incompatibility in pregnancy.