Direct laryngoscopy is a diagnostic procedure that may also be therapeutic for removal of foreign bodies or tumors. It is a frequently performed otolaryngologic procedure, and considered to be one of the safest. Among the few complications that may occur are, injuries to the teeth during placement of the rigid scopes that are required to visualize the larynx, risks of general anesthesia, bleeding after biopsy, and failure of vocal cord to heal after biopsy. Voice changes, or hoarseness are possible after any vocal cord surgery. Any time the airway itself is instrumented, there is always a change of swelling or edema in the airway. This could necessitate surgical intervention to protect the patient's airway, i.e. temporary placement of a tracheostomy tube to insure adequate ventilation, although this is an unusual and unlikely sequelae of laryngoscopy.
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