Which of the following features are consistent with a large flexible bronchoscope compared with a smaller one?

Question

Quizplus · Accepted Answer

Larger, flexible bronchoscopes have two control cables aligned 180 degrees from each other that connect a hinged bending section at the distal tip of the tube to a control lever at the head of the scope. These cables allow the operator to flex and extend the distal tip of the bronchoscope in order to direct the passage of the scope through the airways. The 2.2-mm scopes have this directable capability, but they lack the third major component of the insertion tube, a suction channel. The larger scopes contain suction channels, varying in diameter from 1.2 mm in the 2.8- to 3.7-mm scopes to 3.2 mm in the 4.5-mm scopes. These suction channels allow for the suction of airway secretions, the instillation of lavage fluids or medications into the airway, and the passage of brushes and biopsy forceps for obtaining airway cytology and pathology specimens. The channel, direction cables, and fiberoptic bundles are enmeshed in a woven metal sheath and then enclosed in a nonlatex flexible plastic membrane.

Which of the Following Features Are Consistent with a Large