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Table 2 Progress of blood gas analysis and methemoglobin concentration of case 2

From: Two Cases of Methemoglobinemia Induced by the Exposure to Nitrobenzene and Aniline

  Initial * Progress
1 hour later 2 hours later 4 hours later 6 hours later 1 day later 2 days later 3 days later
pH 7.41 7.40 7.40 7.36 7.34 7.34 7.42 7.46
PCO2 (mmHg) 37.4 41.3 38.1 43.5 45.0 47.2 39,1 34.1
PO2 (mmHg) 185 221 200.9 261.1 345 237 114 119
HCO2 (mmol/L) 23.0 23.5 23.1 24.2 23.6 25.0 25.0 24.2
O2 saturation (%) 98.3 98.5 98.6 99.0 99.2 99.0 98.3 97.2
Methemoglobin (%) 46.8 25.3 19.3 9.9 6.6 2.4 1.5 0.8
  1. *The MetHb at the local hospital was 26.3%.
  2. The patient was initially treated with injection of 2% methylene blue and O2 inhalation.