Pneumocephalus following a combined spinal-epidural technique: a case report.

Pneumocephalus refers to the presence of air within the intracranial cavity, and albeit its occurrence following neuraxial techniques is rare, it is commonly associated with a loss of resistance to air technique. This case report describes a parturient who underwent neuraxial analgesia for pain management during labour. Epidural space identification with loss of resistance to saline technique was used and she went on to develop a symptomatic pneumocephalus. The pneumocephalus had an atypical presentation without immediate headache but with a sudden change in consciousness, likely due to an increase in intracranial pressure following migration of air into the intracranial cavity through the ventricular system. Although in most cases it is benign, asymptomatic, and self-limiting, early diagnosis is helpful as treatment with supplemental oxygen can speed recovery. In this case, due to its atypical and sudden presentation, supportive treatment was essential for the prognosis of both mother and baby.