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Factors affecting efficacy of packed red blood cell transfusion in neonates

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Abstract

The degree of increase in haematocrit and equilibration time following packed red blood cell (PRBC) transfusion in neonates is not well studied. We evaluated change in haematocrit 15 min, 6 h and 24 h after PRBC transfusion in neonates and factors predicting this change. Among neonates receiving PRBC transfusion, we recorded pre-transfusion haematocrit and a priori identified putative variables affecting change in haematocrit following transfusion. The factors affecting change in haematocrit were analyzed by multiple linear regression analysis. Eighty-one neonates received 119 PRBC transfusions (mean volume 16 ± 4 mL/kg). Haematocrit increased from 26 ± 5 to 41 ± 5% at 15 min after PRBC transfusion (p = 0.001) and remained stable till 6 h (41 ± 5%, p = 0.11). It decreased to 40 ± 5%, at 24 h post transfusion (p < 0.001). On linear regression analysis, baseline haematocrit of the baby, donor blood haematocrit and volume of PRBC transfusion were independent determinants of increase in haematocrit.

Conclusion: After 16 mL/kg PRBC transfusion in neonates, haematocrit increased by 15% at 15 min post transfusion. The equilibration in haematocrit values was achieved by 15 min after transfusion. Baseline haematocrit of neonate, donor blood haematocrit and transfusion volume independently determine the rise in haematocrit.

What is Known:

Rise in haematocrit following PRBC transfusion in neonates has been studied in a small number of stable infants.

Determinants of efficacy of PRBC transfusion have not been well studied in newborns.

What is New:

Each milliliter/kilogramme of PRBC transfusion increases the neonate’s haematocrit by approximately 1%.

Baseline haematocrit, donor blood haematocrit and transfusion volume per kilogramme body weight independently determine the rise in haematocrit.

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Abbreviations

CI:

Confidence interval

FST:

Fluorescent spot test

G6PD:

Glucose-6-phosphate dehydrogenase

IQR:

Interquartile range

PRBC:

Packed red blood cell

SD:

Standard deviation

SNAP-II:

Score for Neonatal Acute Physiology II

STB:

Serum total bilirubin

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Correspondence to Praveen Kumar.

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No funds were granted for this study.

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The authors declare that they have no competing interests.

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All procedures performed in this study were in accordance with the ethical standards of the institutional ethics committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Prior to the conduct of the study, approval was taken from the institutional ethical review board.

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Informed consent was obtained from all individual participants included in the study.

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Communicated by Patrick Van Reempts

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Pilania, R.K., Saini, S.S., Dutta, S. et al. Factors affecting efficacy of packed red blood cell transfusion in neonates. Eur J Pediatr 176, 67–74 (2017). https://doi.org/10.1007/s00431-016-2806-7

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