Causes of coma
| No | % (95% CI) | |
|---|---|---|
| Structural | 46 | 40 (31 to 49) |
| Brain haemorrhage | 20 | 17.4 |
| Subarachnoid haemorrhage | 9 | 7.8 |
| Brain infarction | 5 | 4.3 |
| Subdural haematoma | 4 | 3.5 |
| Epidural haematoma | 3 | 2.6 |
| Brain contusion | 2 | 1.7 |
| Brain tumour | 1 | 0.9 |
| Venous thrombosis | 1 | 0.9 |
| Central pontine myelinolysis | 1 | 0.9 |
| Metabolic | 69 | 60 (51 to 69) |
| Drug overdose | 26 | 22.6 |
| Alcohol | 9 | 7.8 |
| Hypoglycaemia | 5 | 4.3 |
| Sepsis | 5 | 4.3 |
| Pneumonia | 5 | 4.3 |
| Congestive heart failure | 3 | 2.6 |
| Hypoxia | 2 | 1.7 |
| Carbon dioxide narcosis | 2 | 1.7 |
| Hepatic coma | 2 | 1.7 |
| Seizure | 2 | 1.7 |
| Uraemia | 2 | 1.7 |
| Hyponatraemia | 1 | 0.9 |
| Diabetic ketoacidosis | 1 | 0.9 |
| Asthma | 1 | 0.9 |
| Heat stroke | 1 | 0.9 |
| Unknown | 2 | 1.7 |