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The AIM of this experimental study was to evaluate the effect of the antioxidant drug “U-74389G” in a rat model of hypoxia reoxygenation (HR) using the previously established protocol. Effects of treatment were evaluated by mean red blood cell distribution width (RDW) levels. MATERIALS AND METHODS: 40 rats of a mean weight of 231.875 g were employed in the study. RDW levels were determined at 60 min (groups A and C) and at 120 min (groups B and D) after starting the reoxygenation. Groups A and B received no drugs, whereas rats from groups C and D were administered with U-74389G. RESULTS: demonstrated that U-74389G administration significantly decreased the RDW levels by 4.96% + 2.27% (p = 0.0175). Reoxygenation time non-significantly decreased the RDW levels by 0.27% + 2.41% (p = 0.8889). Together, U-74389G administration and reoxygenation time non-significantly decreased the RDW levels by 2.54% + 1.39% (p = 0.0679). CONCLUSIONS: U-74389G administration particulary in concert without reperfusion declines the RDW levels even within the short - time context of 1.5 hours reperfusion.

Critically ill patients usually present with circulatory hypoxemia and this is associated with a poorer prognosis. The aim of this experimental study was to examine the effect of U-74389G with specific regard to a hypoxemia/re-oxygenation protocol, on mean blood haemoglobin (Hgb) levels in rats.