Two cases of fatal air embolism in children undergoing scoliosis surgery.

Venous air embolism during surgery is a rare but important complication and can be rapidly fatal. We present two cases of fatal air embolism in the prone position occurring in small children undergoing surgery for progressive scoliosis. Venous air embolism is a rare complication in the prone position. This is thought to be because in this position there is virtually no gravitational gradient between the site of surgery and the right atrium. The possible sites of entry of air and ways that this may be minimized are discussed.