Special Edition on Infection Prevention & Control | Page 10

●Healthcare personnel should wear filtering facepiece respirators (e.g., N95 respirators) or higher-level respirators during all aerosol generating procedures or surgical procedures involving anatomic regions where viral loads might be higher, such as the nose and throat, oropharynx, respiratory tract even if the patient has tested negative for COVID-19. Healthcare organizations will need to identify all aerosol generating procedures to which their employees could be exposed, determine the risk, and, if risk is identified, either provide them a respirator or prevent entry into the room until sufficient air changes have occurred to remove infectious particles. Employers must comply with Occupational Safety and Health Administration (OSHA)’s Respiratory Protection Standard if their employees wear respirators that fall under the standard. In order to prevent entry prior to allowing a sufficient time to elapse, organizations will need to identify the number of air changes per hour in the room(s) where the aerosol generating procedure(s) will take place. For some organizations (e.g., hospitals and ambulatory surgery centers) information regarding air changes is relatively easy to obtain from their facilities staff. For other healthcare providers, such as homecare agencies, it may be easier to require staff to wear a respirator whenever entering the home of a patient who is having aerosol-generating procedures (e.g., nebulizer treatment) because it is not possible to identify air changes of each private residence. Finally, organizations that identify aerosol generating procedures that create risk for their employees should review their procedure schedules and ensure sufficient time has passed to remove infectious particles before the next patients in line are placed in that area. . Informing patients about processes to decrease their risk of exposure, such as spacing aerosol generating procedures and explaining how rooms are cleaned between patients to ensure their protection is another way to show an organization’s commitment to preventing transmission of COVID-19. ●If an organization has resumed elective procedures and ambulatory care, it should no longer be operating under crisis standards of care and should have sufficient gowns, eye protection, and facemasks to follow conventional practices for the elective procedures and care that they are providing. One way that organizations are doing this is by reviewing what PPE is needed based on anticipated exposure. For example, if the facility was using a Level 4 surgical gown for all surgical procedures and these are in short supply, they might review the types of elective procedures and determine that some minimally invasive surgical procedures could be safely performed using a Level 2 gown. Another example would be to switch from disposable eye protection to reusable eye protection and implement a process for cleaning and disinfection. ●During times of respirator shortages, it is acceptable for health care organizations to use contingency conservation strategies for filtering facepiece respirators (e.g., N95 respirators) to ensure an adequate supply of respirators is available for all aerosol generating procedures. CDC has recommended extended use, the practice of wearing the same N95 respirator for repeated close-contact encounters with several different patients without removing the respirator between patient encounters over reuse of respirators, the practice of removing and reapplying the respirator between patients. When organizations approaching crisis surge capacity and anticipate an inability to provide sufficient number of respirators to protect staff involved in aerosol generating procedures, the disinfection of single use respirators is an option when organizations have been in communication with local public health partners (e.g., public health emergency preparedness and response staff) and are still unable to obtain replacement supplies to match anticipated need. Decontamination of disposable respirators as a means of extending use is an option that has been addressed by states, the CDC, FDA and other stakeholders, including safety organizations. ●Organizations should check with state and local health departments for more information about area specific risks and requirements. How organizations approach emerging infectious diseases and their preparedness has most likely changed forever. Similar to the paradigm shift of healthcare workers always of wearing gloves that happened during the late 1980’s and early 1990s -- social distancing and wearing masks in healthcare facilities and use of respirators for aerosol generating and high-risk procedures to prevent transmission of respiratory viruses, including COVID-19, will likely become the new normal to keep everyone safe. Organizations will need to stay alert for updated information about transmission, evaluate the credibility and applicability to their care settings, and use the information implement effective strategies to protect their staff and patients. Sylvia Garcia, MBA, RN, CIC, is director of infection prevention and control for the Joint Commission. References: 1. He X, Lau EHY, Wu P, et al. Temporal dynamics in viral shedding and transmissibility of COVID-19. Nat Med. 2020;26(5):672‐675. doi:10.1038/ s41591-020-0869-5 2. Centers for Disease Control and Prevention. Frequently asked questions. Updated May 29, 2020. Available at https://www.cdc.gov/coronavirus/2019- ncov/faq.html#:~:text=COVID%2D19%20is%20a,way%20the%20virus%20 spreads. Accessed May 31, 2020. 3. Heinzerling A, Stuckey MJ, Scheuer T, et al. Transmission of COVID-19 to Health Care Personnel During Exposures to a Hospitalized Patient - Solano County, California, February 2020. MMWR Morb Mortal Wkly Rep. 2020;69(15):472‐476. Published 2020 Apr 17. doi:10.15585/ mmwr.mm6915e5 4. van Doremalen, N, Bushmaker T, Morris DH, et al. Aerosol and Surface Stability of SARS-CoV-2 as Compared with SARS-CoV-1. N Engl J Med. 2020;382(16):1564–7. DOI: 10.1056/NEJMc2004973. 5. Bai Y, Yao L, Wei T, et al. Presumed Asymptomatic Carrier Transmission of COVID-19 [published online ahead of print, 2020 Feb 21]. JAMA. 2020;323(14):1406‐1407. doi:10.1001/jama.2020.2565 6. Gao Z et al., A systematic review of asymptomatic infections with COVID-19, Journal of Microbiology, Immunology and Infection, https://doi.org/10.1016/j.jmii.2020.05.001 7. Furukawa NW, Brooks JT, Sobel J. Evidence supporting transmission of severe acute respiratory syndrome coronavirus 2 while presymptomatic or asymptomatic. Emerg Infect Dis. 2020 Jul (early release May 4, 2020). https://doi.org/10.3201/eid2607.201595 8. Zitek T. The Appropriate Use of Testing for COVID-19. West J Emerg Med. 2020;21(3):470‐472. Published 2020 Apr 13. doi:10.5811/ westjem.2020.4.47370 10 IP&C Special Edition June 2020 • www.healthcarehygienemagazine.com