الفهرس 
Anatomical considerationOnly 14 pages are availabe for public view
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Abstract
Switching from two -lung to one -lung ventilation (OLV)’ during thoracic surgery is associated with marked increase in airway pressure of the dependent lung. Therefore.one coiiki expect that especially patients with pre-existing pulmonary hyperinflation pose an increased risk of barotrauma duringvoneMung;ventilation.Several studies indicate that ’ permissive hypercapnea’ induced by decreased tidal volume may reduce lung injury that enhance survival in patients with acute respiratory distress syndrome and severe asthm Although the clinical use of modest’permissive hypercapnea’ during lung volume reduction surgery was reported by Zollinger et al(5) and Krucylak et al,the effects of acute hypercapnea during one-lung ventilation have not yet been investigated systematically.This study will investigate the haemodynamic and gas.