Nasolaryngoscopy hood successfully reduces aerosol exposures to sufferers

The COVID-19 pandemic has continued to trigger dramatic shifts within the apply of otolaryngology. Even with customary precautions akin to bodily distancing and carrying private protecting tools, aerosol-generating procedures akin to nasolaryngoscopy (a generally carried out in-office process during which a gentle, versatile fiber-scope is handed by means of the nostril and into the throat) and intranasal instrumentation have been decided to hold a threat of potential transmission if not adequately protected.

In an effort to mitigate publicity to those airborne particles, researchers from Boston College College of Medication (BUSM) designed and examined a prototype nasolaryngoscopy hood, worn by the affected person that gives secure and efficient safety in lowering aerosols exposures.

With a purpose to take a look at the efficacy of the hood, a particle counter was used to calculate the common variety of 0.3-mm particles/L detected throughout numerous scientific eventualities that included sneezing, nasolaryngoscopy, sneezing throughout nasolaryngoscopy and topical lidocaine spray administration. Experiments have been repeated to match the effectiveness of the hood versus no safety.

When no affected person barrier (hood or masks) was used, a big enhance in aerosols was detected throughout sneezing, sneezing throughout nasolaryngoscopy and topical spray administration. With the hood was in place, the extent of aerosols returned to baseline ranges in every situation.

This straightforward intervention permits sufferers to endure routine versatile nasal laryngoscopy, even with topical lidocaine spray administration, with much less threat to the supplier. If a affected person begins to sneeze through the examination, our information counsel that suppliers will stay protected by means of using the hood.”

Christopher Brook, MD, Corresponding Writer, Assistant Professor of Otolaryngology–Head and Neck Surgical procedure, BUSM

Whereas this research evaluated the efficacy of the hood within the setting of a routine nasolaryngoscopy in lowering aerosol unfold, there are different attainable functions but additionally one main barrier to beat. “For scientific use, both the hood would have to be mass produced to permit for single use, or a secure and efficient protocol of cleansing and reusing every hood would have to be established,” stated Brook who is also an otolaryngologist at Boston Medical Middle.

These findings seem on-line within the journal Otolaryngology-Head and Neck Surgical procedure.


Journal reference:

Plocienniczak, M.J., et al. (2020) Evaluating a Prototype Nasolaryngoscopy Hood Throughout Aerosol-Producing Procedures in Otolaryngology. Otolaryngology-Head and Neck Surgical procedure.

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