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9th February 2024
A 23-year-old male is admitted following an overdose of an unknown drug.
A 23-year-old male is admitted following an overdose of an unknown drug. On examination, he is hyperventilating and is tachycardic.
Arterial blood gas results on room air are as follows:
| Investigation | Results | Normal value |
|---|---|---|
| pH | 7.55 | 7.35-7.45 |
| pCO2 | 2.9 kPa | 4.7-6.0 kPa |
| pO2 | 14.7 kPa | >10.5 kPa |
| HCO3- | 21 mmol/l | 22-29 mmol/l |
Which of the following drugs is he most likely to have taken?
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