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Christensen RD, Bahr TM, Ohls RK, Ilstrup SJ, Moise KJ, Lopriore E, Meznarich JA. Erythrokinetic mechanism(s) causing the "late anemia" of hemolytic disease of the fetus and newborn. J Perinatol 2024; 44:916-919. [PMID: 38216678 DOI: 10.1038/s41372-024-01872-z] [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: 10/26/2023] [Revised: 12/19/2023] [Accepted: 01/04/2024] [Indexed: 01/14/2024]
Abstract
A transfusion-requiring "late anemia" can complicate the management of neonates convalescing from hemolytic disease of the fetus and newborn (HDFN). This anemia can occur in any neonate after HDFN but is particularly prominent in those who received intrauterine transfusions and/or double-volume exchange transfusions. Various reports describe this condition as occurring based on ongoing hemolysis, either due to passive transfer of alloantibody through breast milk or persistence of antibody not removed by exchange transfusion. However, other reports describe this condition as the result of inadequate erythrocyte production. Both hypotheses might have merit, because perhaps; (1) some cases are primarily due to continued hemolysis, (2) others are primarily hypoproductive, and (3) yet others result from a mixture of these two mechanisms. We propose prospective collaborative studies that will resolve this issue by serially quantifying end-tidal carbon monoxide. Doing this will better inform the assessment and treatment of neonates recovering from HDFN.
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Affiliation(s)
- Robert D Christensen
- Women and Newborns Research, Intermountain Health, Murray, UT, USA.
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA.
| | - Timothy M Bahr
- Women and Newborns Research, Intermountain Health, Murray, UT, USA
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Robin K Ohls
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Sarah J Ilstrup
- Transfusion Medicine, Department of Pathology, Intermountain Health, Murray, UT, USA
| | - Kenneth J Moise
- Comprehensive Fetal Care Center at Dell Children's Medical Center and Department of Women's Health, Dell Medical School, Austin, TX, USA
| | - Enrico Lopriore
- Division of Neonatology, Leiden University Medical Centre, Leiden, Netherlands
| | - Jessica A Meznarich
- Division of Hematology/Oncology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
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