The coronal aorto-mesenteric orientation theory for post-operative nausea and vomiting following scoliosis surgery in children: a pilot study.

Patients with coronal aorto-mesenteric orientation preoperatively appear at greater risk of developing significant PONV following scoliosis surgery, independent of opiate requirements, prompting consideration of transient partial duodenal obstruction as an important factor in the mechanisms of PONV. A coronal aorto-mesenteric orientation theory (CAMOT) is proposed to explain this biomechanical vascular 'scissor'.