BACKGROUND: Red blood cell (RBC) transfusion decreases intermittent hypoxemia (IH) events beyond the first week of life. This benefit may be related to improved perfusion to the respiratory control network. Perfusion index (PI) is a perfusion measure provided by the pulse oximeter. We hypothesized that the benefit in IH after RBC transfusion is associated with an increase in PI. In addition, we assessed the value of PI and clinical measures in predicting the effect of RBC transfusion on IH. STUDY DESIGN AND METHODS: We prospectively enrolled infants less than 30 weeks' gestation age. PI and oxygen saturation (SpO 2 ) were monitored with high-resolution pulse oximeters 24 hours before and after RBC transfusion. Data were analyzed at three postnatal periods: Epoch 1, first week of life (1 to 7 days of life); Epoch 2, 2 to 4 weeks of life (8 to 28 days of life); and Epoch 3, 4 to 8 weeks of life. RESULTS: A total of 118 transfusions were analyzed. IH measures significantly decreased after transfusion in Epochs 2 and 3. PI significantly increased after transfusion, but it did not correlate with the decrease in IH measures. Mechanical ventilation, fraction of inspired oxygen (FiO 2 ), and IH measures influenced the effects on oxygenation. CONCLUSIONS: RBC transfusion improved IH after the first week of life. The benefit in IH did not correlate with PI increase after transfusion. Pretransfusion respiratory support and IH measures predicted the effect of transfusion on oxygenation.
|Number of pages||7|
|State||Published - Nov 2018|
Bibliographical noteFunding Information:
The authors thank all the Neonatal Intensive Care Unit nurses, research nurses, and personnel, fellow physicians and attending neonatologists at University of Kentucky Children's Hospital who all have paved the way in making sure we had good data collection.
ABBREVIATIONS: IH = intermittent hypoxemia; IH-SpO2 < 80 = PI = perfusion index; %time-SpO2 < 80 = overall percent time spent with SpO2 of less than 80% From the 1Division of Neonatology, Department of Pediatrics; 2Department of Biostatistics, College of Public Health; and 3Department of Biomedical Engineering, College of Engineering, University of Kentucky, Lexington, Kentucky. Address reprint requests to: Elie G. Abu Jawdeh, Division of Neonatology, Department of Pediatrics, University of Kentucky; 138 Leader Avenue, Lexington, KY 40508; e-mail: firstname.lastname@example.org. This project described was supported by the National Center for Research Resources, UL1RR033173, and is now at the National Center for Advancing Translational Sciences. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH and The Gerber Foundation. Received for publication September 1, 2018; revision received February 28, 2018; and accepted March 25, 2018. doi:10.1111/trf.14808 © 2018 AABB TRANSFUSION 2018;58;2538–2544
© 2018 AABB
ASJC Scopus subject areas
- Immunology and Allergy