[Spinal operations performed in prone position: pulmonary gas exchange, hemodynamics, and possible complications].

Invasive and non-invasive studies have been used to study the cardiac and respiratory systems in 93 patients during prolonged prone surgical interventions into the vertebral column. Pronounced hemodynamic changes have been found to be absent at the stage of anesthetic anesthesia and while turning the patient with to the prone position. Gas exchange is determined by the increase in alveolar dead space, PaCO2, and PaO2. The position complications during these interventions are caused by errors while placing the patient on an operating table.