key: cord-0965167-hpit3412
authors: Singh, Deepak Kumar; Sharma, Sudhendu Shekhar; Swain, Jyotiranjan; Prakash, Puneet; Jain, Deep Kumar; Yadav, Avadhesh Kumar
title: Dual protection for day care procedures: Need in Coronavirus Disease 2019 (COVID‐19) pandemic
date: 2020-07-02
journal: J Surg Oncol
DOI: 10.1002/jso.26093
sha: 748eb848d0447202627f40d4a8fcc24d25d75077
doc_id: 965167
cord_uid: hpit3412

nan

To the Editor, The electrostatic filter suggested by the authors is indeed a good suggestion, but we have two concerns. 1 One is regarding its decreased efficiency in the highly humid conditions of the tropical countries, 2 like India resulting in its questionable efficacy to work for 24 hours and second is uncomfortable fitting of the mask.

Electrostatic filter works by attracting the viruses and bacteria to the charged surface, however microbes can pass through the filter dissolved in liquid during high levels of humidity. 2 Authors have suggested that it can be used for 24 hours as compare to the standard N95 masks which are approved for use for 8 hours only, but the efficacy of this filter needs to be tested in tropical climate settings before we can suggest its routine use.

The idea behind disposable customised aerosol containment chamber was to facilitate use of a single operation room for multiple procedures. 1 The mask proposed by authors will a surgeon/anesthetist for a day, which promotes and supplements this idea of 

Comment on: disposable customized aerosol containment chamber for oral cancer biopsy: a novel technique during COVID-19 pandemic

Heat and moisture exchangers and breathing system filters: their use in anaesthesia and intensive care. Part 1-history, principles and efficiency