PMID- 35667836 OWN - NLM STAT- MEDLINE DCOM- 20220914 LR - 20220914 IS - 1423-0410 (Electronic) IS - 0042-9007 (Linking) VI - 117 IP - 9 DP - 2022 Sep TI - The spectrum of ABO haemolytic disease of the fetus and newborn in neonates born to group O mothers. PG - 1112-1120 LID - 10.1111/vox.13327 [doi] AB - BACKGROUND AND OBJECTIVES: ABO haemolytic disease of the fetus and newborn (HDFN) is a lesser recognized entity; however, the severity may vary in neonates. This prospective observational study was performed to determine the severity and risk of ABO-HDFN in neonates born to O group mothers. MATERIALS AND METHODS: A total of 260 neonates born to non-alloimmunized blood group O mothers were recruited. Blood group O neonates were excluded from the study. Neonatal direct antiglobulin test (DAT) was performed using the column agglutination technique. They were monitored for clinical and laboratory parameters and followed up at 6-8 weeks. The maternal anti-A and anti-B titres (IgM and IgG) were also done. RESULTS: A total of 176 neonates with blood group A (77/260; 29.6%) and B (99/260; 38.1%) were finally included in the study, and 15 (8.5%) of them were DAT positive. Overall, 26.7% (47/176) neonates received phototherapy, 172 (97.7%) survived and none required readmission. The median (inter-quartile range [IQR]) maternal IgG anti-B titre (32 [32-64]) was significantly higher (p < 0.001) than the IgG anti-A titre (16 [8-64]). The maximum total serum bilirubin in neonates had a significant positive association with neonatal birth weight (p = 0.045), positive DAT (p = 0.006) and requirement of phototherapy (p < 0.001). The relative risk (95% CI) of a DAT-positive neonate requiring phototherapy was 4.55 (3.12-6.33). CONCLUSION: The frequency of ABO incompatibility in neonates born to group O mothers was 67.69% (176/260). The maternal IgG titre of >/=64 could be a good predictor for identifying the neonates at risk of developing hyperbilirubinaemia requiring phototherapy. CI - (c) 2022 International Society of Blood Transfusion. FAU - Talwar, Manvi AU - Talwar M AD - Department of Transfusion Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India. FAU - Jain, Ashish AU - Jain A AUID- ORCID: 0000-0001-7799-7484 AD - Department of Transfusion Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India. FAU - Sharma, Ratti Ram AU - Sharma RR AUID- ORCID: 0000-0002-7415-4665 AD - Department of Transfusion Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India. FAU - Kumar, Praveen AU - Kumar P AD - Department of Pediatric Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India. FAU - Saha, Subhas Chandra AU - Saha SC AD - Department of Obstetrics and Gynecology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India. FAU - Singh, Lakhvinder AU - Singh L AUID- ORCID: 0000-0002-7658-5389 AD - Department of Transfusion Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India. LA - eng GR - None declared./ PT - Journal Article PT - Observational Study DEP - 20220606 PL - England TA - Vox Sang JT - Vox sanguinis JID - 0413606 RN - 0 (ABO Blood-Group System) RN - 0 (Immunoglobulin G) SB - IM MH - ABO Blood-Group System MH - *Blood Group Incompatibility MH - *Erythroblastosis, Fetal MH - Female MH - Fetus MH - Humans MH - Immunoglobulin G MH - Infant, Newborn OTO - NOTNLM OT - ABO-HDFN OT - IgG antibody OT - antibody titre OT - direct antiglobulin test OT - haemolytic disease of the fetus and newborn EDAT- 2022/06/07 06:00 MHDA- 2022/09/15 06:00 CRDT- 2022/06/06 21:12 PHST- 2022/04/23 00:00 [revised] PHST- 2022/02/22 00:00 [received] PHST- 2022/05/15 00:00 [accepted] PHST- 2022/06/07 06:00 [pubmed] PHST- 2022/09/15 06:00 [medline] PHST- 2022/06/06 21:12 [entrez] AID - 10.1111/vox.13327 [doi] PST - ppublish SO - Vox Sang. 2022 Sep;117(9):1112-1120. doi: 10.1111/vox.13327. Epub 2022 Jun 6.