Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, California, USA.
Center for Minimally Invasive Skull Base Surgery, Departments of Otolaryngology-Head & Neck Surgery and Neurological Surgery, University of California, San Francisco, California, USA.
Head Neck. 2020 Jul;42(7):1577-1582. doi: 10.1002/hed.26239. Epub 2020 May 30.
The coronavirus disease (COVID-19) pandemic has raised concern of transmission of infectious organisms through aerosols formation in endonasal and transoral surgery.
Retrospective review. We introduce the negative-pressure otolaryngology viral isolation drape (NOVID) system to reduce the risk of aerosol. NOVID consists of a plastic drape suspended above the patient's head and surgical field with a smoke evacuator suction placed inside the chamber.
Four patients underwent endonasal (4) and endo-oral surgery (1). Fluorescein was applied to the surgical field. Black light examination of fluorescein-treated operative fields revealed minimal contamination distant to the surgical field. In two prolonged cases with high-speed drilling, droplets were identified under the barrier and on the tip of the smoke evacuator. Instruments and cottonoids appeared to be a greater contributor to field contamination.
Negative-pressure aspiration of air under a chamber barrier, which appears to successfully keep aerosol and droplet contamination to a minimum.
冠状病毒病（COVID-19）大流行引起了人们对通过鼻内和经口腔手术形成的气溶胶传播传染性生物体的关注。
回顾性研究。我们引入了负压耳鼻喉科病毒隔离罩（NOVID）系统，以降低气溶胶的风险。NOVID 由一个悬在患者头部和手术区域上方的塑料罩和放置在腔室内的烟雾抽吸器组成。
4 名患者接受了经鼻（4 例）和经口手术（1 例）。手术区域涂有荧光素。对用荧光素处理的手术区域进行黑光检查显示，远离手术区域的地方污染最小。在两个高速钻牙时间较长的病例中，在屏障下和烟雾抽吸器的尖端发现了飞沫。器械和棉絮似乎对污染手术区域有更大的影响。
腔室屏障下的负压抽吸空气似乎成功地将气溶胶和飞沫污染降到最低。
