Hyper high haemoglobin content in red blood cells and erythropoietic transitions postnatally in infants of 22 to 26 weeks' gestation: a prospective cohort study

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Hyper high haemoglobin content in red blood cells and erythropoietic transitions postnatally in infants of 22 to 26 weeks' gestation: a prospective cohort study

Larsson, Sara Marie (author): Lund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neonatalogi,Forskargrupper vid Lunds universitet,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Neonatology,Lund University Research Groups,Halmstad County Hospital

Ulinder, Tommy (author): Lund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neonatalogi,Forskargrupper vid Lunds universitet,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Neonatology,Lund University Research Groups,Skåne University Hospital

Rakow, Alexander (author): Karolinska Institutet,Karolinska University Hospital

Vanpee, Mireille (author): Karolinska Institutet,Karolinska University Hospital

Wackernagel, Dirk (author): Karolinska Institutet,Johannes-Gutenberg University Mainz

Sävman, Karin (author): Sahlgrenska Academy

Hansen-Pupp, Ingrid (author): Lund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neonatalogi,Forskargrupper vid Lunds universitet,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Neonatology,Lund University Research Groups,Skåne University Hospital

Hellström, Ann (author): Sahlgrenska Academy

Ley, David (author): Lund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neonatalogi,Forskargrupper vid Lunds universitet,LTH profilområde: Avancerade ljuskällor,LTH profilområden,Lunds Tekniska Högskola,LU profilområde: Ljus och material,Lunds universitets profilområden,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Neonatology,Lund University Research Groups,LTH Profile Area: Photon Science and Technology,LTH Profile areas,Faculty of Engineering, LTH,LU Profile Area: Light and Materials,Lund University Profile areas,Skåne University Hospital

Andersson, Ola (author): Lund University,Lunds universitet,Pediatrik, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Neonatalogi,Forskargrupper vid Lunds universitet,Paediatrics (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Neonatology,Lund University Research Groups,Skåne University Hospital

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2023
2023
English.
In: Archives of Disease in Childhood: Fetal and Neonatal Edition. - 1468-2052. ; 108:6, s. 612-616

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Journal article (peer-reviewed)

Abstract Subject headings

Objective Blood cell populations, including red blood cells (RBC) unique to the extremely preterm (EPT) infant, are potentially lost due to frequent clinical blood sampling during neonatal intensive care. Currently, neonatal RBC population heterogeneity is not described by measurement of total haemoglobin or haematocrit. We therefore aimed to describe a subpopulation of large RBCs with hyper high haemoglobin content, >49 pg (Hyper-He) following EPT birth.Design Prospective observational cohort study.Setting Two Swedish study centres.Participants Infants (n=62) born between gestational weeks 22+0 to 26+6.Methods Prospective data (n=280) were collected from March 2020 to September 2022 as part of an ongoing randomised controlled trial. Blood was sampled from the umbilical cord, at postnatal day 1–14, 1 month, 40 weeks’ postmenstrual age and at 3 months’ corrected age.Results At birth, there was a considerable inter-individual variation; Hyper-He ranging from 1.5% to 24.9% (median 7.0%). An inverse association with birth weight and gestational age was observed; Spearman’s rho (CI) −0.38 (−0.63 to −0.07) and −0.39 (−0.65 to −0.05), respectively. Overall, Hyper-He rapidly decreased, only 0.6%–5.0% (median 2.2%) remaining 2 weeks postnatally. Adult levels (Conclusion Our results point to gestational age and birth weight-dependent properties of the RBC population. Future work needs to verify results by different measurement techniques and elucidate the potential role of differing properties between endogenous and transfused RBCs in relation to neonatal morbidities during this important time frame of child development.Trial registration number NCT04239690.

Subject headings

MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Pediatrik (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Pediatrics (hsv//eng)

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Pediatrics

Articles in the publication: Archives of Dise ...

By the university: Lund University; Karolinska Institutet

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