key: cord-0907881-nu7xlr7j
authors: Kumar, Neeraj; Kumar, Amarjeet; Kumar, Abhyuday; Kumar, Ajeet; Kumar, Sanjeev; Singh, Prabhat Kumar
title: Negative airflow isolation bed provides an option for NIV ventilation during COVID -19 pandemic
date: 2020-07-18
journal: nan
DOI: 10.1016/j.tacc.2020.07.005
sha: be945c102ffc8fbe9ba129b1301c93028a76756f
doc_id: 907881
cord_uid: nu7xlr7j

nan

Pandemic. 2 We all are facing disaster with this covid pandemic and now it's acting as a real super spreader.

Till writing this letter in the entire globe over 6 million people have been infected by this virus 4 and so far, over around 4 lakh people have died due to COVID 19. As our country India is 5 currently in coronavirus lockdown 5.0 phase. A total of 2.5 Lakh cases are detected as COVID 6 positive and more than six thousands COVID 19 patients have succumb to death.

According to current evidence, approximately 14% of COVID-19 patients develop a severe and 8 5% develop a critical form of disease which requires respiratory support treatment. [1] About 67% 9 of the critical patient develop ARDS. [1] The various non-invasive supportive treatments like 10 oxygen therapy, HFNC (High Flow nasal Canula), CPAP and NIV (non-invasive ventilation) are 11 always associated with high risk of aerosol dispersion, especially in unprotected environments. 12 In fact, various aerosol-generating procedures like airway suction, bronchoscopy, endotracheal up as it is a portable, independent patient isolation system in which the air delivery or extraction 2 is made through the canopy support structure (Figure 1) . For air delivery a rigid plastic round 3 airflow (PVC, medical grade) tunnel between canopy and filter unit is present and due to the 4 presence of an airflow system. This system delivers a negative airflow of 112m 3 /hr and provides 5 < 1 colony forming unit/m 3 of environment after 10 minutes of installation. This containment 6 version removes the aerosols that are contaminated with viral or bacterial content by using a 7 continual negative air flow and prevents the escape of air from the canopy. The BAS described 8 by Yochai et al [4] is very small covering only the upper part of the body and seems to create 9 claustrophobia to awake patient and provide difficult access for any respiratory care. However, 10 the BAS which we have used, covers the whole body, have advantage of adjusting the height, 11 length and direction of the filter unit along with canopy, and have capacity to accommodate the 12 drip stand. Lucchini et al [5] describe role of Helmet CPAP with an HEPA filter placed after the 

Characteristics of and Important Lessons From the 3

COVID-19) Outbreak in China: Summary of a Report of 4 72 314 Cases From the Chinese Center for Disease Control and Prevention

Aerosol generating procedures and risk of 7 transmission of acute respiratory infections to healthcare workers: a systematic review

Surviving Sepsis Campaign:guidelines on the 11 management of critically ill adults with Coronavirus Disease

Covid19: minimising risk to healthcare workers 15 during aerosol producing respiratory therapy using an innovative constant flow canopy

Nursing Activities Score is 19 increased in COVID-19 patients