Out of mind

A 22 year old man is brought in by paramedics, after being found unconscious in a park. No history is available.

His complete blood count, random capillary glucose, serum electrolytes, and renal and liver functions are all found to be normal.

Select Relevant Investigations
CT Brain

Performed

The CT scan of the brain is normal, with no evidence of hemorrhages, space occupying lesions, midline shift, or edema.
ECG

Performed

The rate is 120 bpm, with occasional premature ventricular complexes. The P waves, QRS complexes and T waves are of normal morphology, with a QRS duration of 80 ms. The PR and QT segments are isoelectric and of normal duration. There is mild right-axis deviation.
Arterial Blood Gases

Performed

On room air:
PaO2: 90 mmHg (75-95)
PCO2: 40 mmHg (35-45)
SaO2 : 99%
PH: 7.40 (7.35-7.45)
HCO3: 24 mmol/L (24-32)
Toxicology Screen

Performed

Amphetamines, Acetaminophen, Benzodiazepines, Opiates, Cannabinoids, Methadone, Ethanol: not detected
Tricyclic Antidepressants: positive

Select Relevant Management
Continuous ECG monitoring
IV NaHCO3
Gastric Lavage
Intubation & Ventilation