Graftieaux J P, Ades P, Gomis P, Leon A, Bazin A, Peruzzi P
Département d'anesthésie-réanimation des Centres hospitaliers et universitaires de Reims.
Agressologie. 1994;34 Spec No 1:38-42.
The most satisfactory method of prone positioning for the posterior approach to the spine and posterior fossa has been influenced by the necessity of providing good operating condition: prone position without abdominal and thoracic compression with a patient's head in the neutral position. Communication between the cava veins and the vertebral venous plexus explain that induce positioning can produce an excessive venous intraoperative bleeding with decreased surgical visibility. Furthermore venous return to the heart decreased resulting in some degree of impaired cardiac output. Hemodynamic disturbances of cerebral or spinal cord bloods flows can occurred.
患者头部处于中立位，俯卧位且无腹部和胸部受压。腔静脉与椎静脉丛之间的交通解释了诱导性体位摆放会导致术中静脉出血过多，手术视野受限。此外，回心血量减少，导致心输出量在一定程度上受损。脑或脊髓血流的血流动力学紊乱可能会发生。
