Question

A 65-year-old man is admitted with an acute exacerbation of COPD requiring non-invasive ventilation (NIV). His arterial blood gas (ABG) on NIV (FiO$_2$ 0.4) shows: pH 7.28, PaCO$_2$ 8.5 kPa, PaO$_2$ 9.0 kPa, HCO$_3$$^-$ 34 mmol/L, BE +6. What type of acid-base disturbance does this represent?

Accepted Answer

Respiratory Acidosis (Partially Compensated)

Answer

Metabolic Acidosis

Answer

Respiratory Alkalosis

Answer

Metabolic Alkalosis

Answer

Mixed Respiratory and Metabolic Acidosis

Practice question

A 65-year-old man is admitted with an acute exacerbation of COPD requiring non-invasive ventilation (NIV). His arterial blood gas (ABG) on NIV (FiO$_2$ 0.4) shows: pH 7.28, PaCO$_2$ 8.5 kPa, PaO$_2$ 9.0 kPa, HCO$_3$$^-$ 34 mmol/L, BE +6. What type of acid-base disturbance does this represent?