Emergency and Toxicologycommon
A 17-year-old girl presents six hours after a deliberate ingestion of tablets taken from the family bathroom cabinet. She complains of nausea, repeated vomiting, ringing in her ears and feeling unable to catch her breath. Her temperature is 37.9°C, respiratory rate 32/min, heart rate 112/min and blood pressure 118/70 mmHg. Arterial blood gas on room air shows: pH 7.47 (7.35–7.45), PaCO2 22 mmHg (35–45), PaO2 96 mmHg, bicarbonate 16 mmol/L (22–26). Which one of the following is the most likely agent ingested?