[1] Istanbul Eyupsultan State Hosp, Dept Anaesthesiol & Reanimat, Istanbul, Turkey
[2] Istanbul Bakirkoy Dr Sadi Konuk Training & Res Hos, Dept Anaesthesiol & Reanimat, Istanbul, Turkey
[3] Karadeniz Tech Univ, Fac Med, Dept Chest Dis, Div Intens Care Unit, Trabzon, Turkey
[4] Samsun Med Pk, Dept Radiol, Samsun, Turkey
[5] Ondokuz Mayis Univ, Fac Med, Dept Anaesthesiol & Reanimat, Div Intens Care Unit, Samsun, Turkey