A 67 year old female is receiving VC-AC ventilation. A RT is unable to advance a 14 Fr suction catheter through the pt 8.0 mm cuffed tracheostomy tube, the RT should:
a. Exchange with an endotracheal tube
b. Instill normal saline
c. Switch to a 6.0 mm cuffed tracheotomy tube
d. replace the inner cannula