Methaemoglobinaemia with G6PD deficiency: rare cause of persistently low saturations in neonates

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Abstract:

Abstract

We report a very rare case of methaemoglobinaemia associated with glucose 6 phosphate dehydrogenase (G6PD) deficiency, complicating a respiratory illness in a preterm neonate. This neonate had consistently low saturation readings despite being ventilated at moderately high pressures in 100% oxygen. An arterial blood gas confirmed a high methaemoglobin level and a high pO2, inconsistent with the saturations. In addition, the bilirubin increased to exchange levels and was difficult to control with quadruple phototherapy. A double volume exchange transfusion was performed, which reduced both bilirubin and methaemoglobin. The pulse oximetry then started to correlate well with pO2. G6PD deficiency was confirmed. Conclusion: 

Paediatricians should remember that methaemoglobinaemia is a rare but important cause of persistently low saturations, and exchange transfusion is a reliable treatment for this condition.

Keywords: G6PD deficiency; Hyperbilirubinaemia; Methaemoglobinaemia; Saturation

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1651-2227.2011.02278.x

Publication date: July 1, 2011

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