Subdural pneumocephalus complicating labor epidural analgesia

- Epidural analgesia can be achieved using a loss-of-resistance technique to either air or saline.
- Pneumocephalus is a complication that can occur with the use of air.
- Headache is the most common presenting symptom of pneumocephalus.
- In this case, pneumocephalus around the brainstem resulted in loss of consciousness.