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Table 1 Serial data regarding ABGs, ventilator settings, and changes made after ABGs were obtained for the duration of mechanical ventilation, including the initial pre-intubation ABGa

From: Hypercapnic cerebral edema presenting in a woman with asthma: a case report

   Time
  Day 1 Day 2
  03:00 06:43 08:52 10:56 12:54 16:34
pH 7.22 7.23 7.41 7.70 7.64 7.42
pCO2 85 89 59 29 36 52
pO2 109 82 67 84 75 115
HCO3 - 33 40 40 36 39 35
RR 12 12 18 21 16 20
V t 600 600 500 500 Varied Varied
FiO2 50 50 50 50 40 40
Change made after ABG Pre-intubation initial CT scan RR increased to 22 breaths/minute No change Spontaneous breathing observed Follow-up CT scan performed Extubation
  1. aABG, arterial blood gas; pCO2, partial pressure of carbon dioxide; pO2, partial pressure of oxygen; HCO3 -, bicarbonate; RR, respiratory rate; V t,; FiO2, fraction of inspired oxygen; CT, computed tomography.
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