11th November 2021

A 25-year-old male was transferred to the emergency department after being found lying on the pavement

A 25-year-old male was transferred to the emergency department after being found lying on the pavement. On initial observation, he has pinpoint pupils and a respiratory rate of 8. An ABG is performed ans shows:  7.15 (7.35-7.45), a PO2 of 17.6 kPA (10-14 kPa), PCO2 of 7.0 (4.5-6.0 kPa), and a bicarbonate of 23 mmol/L (22-28 mmol/L). What type of acid-base disorder does the patient have and what is the likely cause?

Select the SINGLE most appropriate option from the list below. Select ONE option only.