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The normobaric oxygen paradox: does it increase haemoglobin?
Critical Care volume 15, Article number: P422 (2011)
A novel approach to increase erythropoietin (EPO) using oxygen has been reported in healthy volunteers. The purpose of this study is to investigate whether the EPO increase is sufficient to induce erythropoiesis.
We compared exposure to daily versus every other day oxygen administration on haemoglobin variation during a 12-day period. Each subject underwent the two protocols at a 6-week interval period to achieve the same baseline values.
See Figure 1. Nine subjects underwent the study. We observed a significant increase in haemoglobin values in the every other day group compared with the each day group and with baseline. At the end of each day period, haemoglobin values increased to achieve a significant difference as compared with baseline. There was a significant rise of reticulocytes in the every other day group as compared with the each day group (182 ± 94% vs. 93 ± 34%, P < 0.001). These data provide demonstration of an enhanced production of erythrocytes.
The normobaric oxygen paradox seems effective to increase haemoglobin in non-anaemic healthy volunteers assuming there is a sufficient time interval between the two oxygen applications. This could permit interesting clinical applications in perioperative medicine as an adjunct therapy to EPO for blood predonation.
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Theunissen, S., De Bels, D., Devriendt, J. et al. The normobaric oxygen paradox: does it increase haemoglobin?. Crit Care 15, P422 (2011). https://doi.org/10.1186/cc9842
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