Double lumen tube (DLT) is an enotracheal tube that facilitates one lung ventilation. The DLT exact position in the airways is verified by fiber-optic bronchoscopy (FOB) after intubation. The VivaSight TM DL is a single use left DLT with a camera embedded in the tube's right side port. This study was designed to compare the VivaSightTM DL to the standard DLT.