Effects of Iloprost on Pulmonary Hemodynamics and Oxygenation in Patients of Chronic Obstructive Pulmonary Disease During One-lung Ventilation

"Nebulized agents (Iloprost or normal saline) were randomized by computer-generated randomization. The patients and anesthesiologist, who administered inhalation and conducted all this trial, were blinded to the medication allocation. An anesthesiologist, who responsible for preparation of medication, was the only person recognizing of the randomization code during trial.~Enrolled patients were received 20 μg iloprost or placebo (norma saline). Iloprost was diluted in normal saline to obtain 2ml solution. Control group were inhaled comparable dose of normal saline. Iloprost or normal saline was inhaled through an ultrasonic nebulized system in inspiratory limb."