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Table 2 Arterial blood gas analysis, 2,3-DPG level and SpO 2 between two groups

From: Increased blood glycohemoglobin A1c levels lead to overestimation of arterial oxygen saturation by pulse oximetry in patients with type 2 diabetes

Variables HbA1c≤7% (n=147) HbA1c>7% (n=114) P Value
2, 3-DPG(μmo1/gHb) 13.9±1.7 14.2±1.7 0.09
pH 7.37±0.05 7.39±0.05 0.01
PCO2 (Kpa) 5.48±0.73 5.53±0.65 0.565
Carboxyhemoglobin (%) 1.08±0.81 1.09±0.78 0.92
PO2 (Kpa) 10.0±1.9 10.0±2.2 0.843
SaO2 (%) 95.1±2.8 96.2±2.9 0.002
SpO2 (%) 95.3±2.8 98.0±2.6 0.001
  1. Data are mean ± SD.
  2. Abbreviation: 2,3-DPG, 2, 3-diphosphosglycerate.
  3. PCO2, partial pressure of carbon dioxide.
  4. PO2, partial pressure of oxygen; SaO2, arterial oxygen saturation.
  5. SpO2, pulse oximeter oxygen saturation.