Answer: Fenestrated vs. Non-Fenestrated Tubes. A fenestration is a hole in the shaft of the tracheostomy tube, above the curvature, and therefore also above the cuff of a cuffed trach tube. The purpose of a fenestration is to allow for airflow upward and through the vocal cords.
A non-fenestrated single cannula tube with an air-filled cuff is suitable for most adult patients who require a temporary tracheostomy during critical illness.
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