Figure 1: The negative-pressure otolaryngology viral isolation
drape (NOVID) setup. (A) The apparatus consists of a
laparoscopic Bookwalter holder (arrow) and a lone star ring retractor
(arrow-head), with a close up view of the attachment point (square
inset); (B) HEPA filter (arrow) connected to suction beneath
the drape; (C) endoscope and instrument insertion through
fenestrations in the drape; (D) fluorescein-laden droplets at
the mouth of the suction device (square) and gauze used to clean the
scope (circle), the patient’s nose (arrow) for reference.