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Updated: Jul 23, 2026
07:57
Modeling Neonatal Intraventricular Hemorrhage Through Intraventricular Injection of Hemoglobin
Published on: August 25, 2022
"My two-week-old daughter is throwing up blood"
M H Moustafa1, Myiesha Taylor, Laura Fletcher
1Los Angeles County-Martin Luther King Jr./Drew Medical Center, 12021 South Wilmington Avenue, Room 1034, Los Angeles, CA 90059, USA. myi_draon@yahoo.com
Summary
The Apt-Downey test helps identify gastrointestinal bleeding in newborns. It distinguishes between infant and maternal blood, aiding diagnosis in neonates.
Area of Science:
- Neonatal Medicine
- Biochemistry
Background:
- Gastrointestinal bleeding in neonates is often caused by swallowed maternal blood.
- Cracked nipples during breastfeeding can also lead to maternal blood ingestion by the infant.
Observation:
- Suspected gastrointestinal bleeding in newborns requires accurate diagnosis.
- Differentiating the source of blood is crucial for appropriate management.
Findings:
- The Apt-Downey test is a valuable diagnostic tool for neonatal gastrointestinal bleeding.
- This test differentiates neonatal from maternal hemoglobin.
- It works by observing the conversion of oxyhemoglobin to alkaline globin hematin in the presence of alkali.
Implications:
- Accurate diagnosis of the blood source in neonates leads to better clinical decisions.
- The Apt-Downey test provides a simple method to identify the origin of blood in suspected cases.
- Understanding the source of bleeding is key to managing neonatal health concerns effectively.
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