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Table 2 Non-Invasive-Ventilation (NIV +) in groups of patients according to ABG analysis values

From: Acid–base balance, serum electrolytes and need for non-invasive ventilation in patients with hypercapnic acute exacerbation of chronic obstructive pulmonary disease admitted to an internal medicine ward

  Mixed respiratory acidosis – metabolic alkalosis (N = 36) Compensated respiratory acidosis (N = 51) Mixed respiratory - metabolic acidosis (N = 23)
NIV - 75 % (27) 53 % (27) 4 % (1)
NIV + 25 % (9) 47 % (24) 96 % (22)
  1. χ 2 < 0.001