The cardinal rules: Principles of personal protective equipment for high-consequence infectious disease events

In recognition of an increasing number of high-consequence infectious disease events, a group of subject-matter experts identified core safety principles that can be applied across all donning and doffing protocols for personal protective equipment.

Literature review of physiological strain of personal protective equipment on personnel in the high-consequence infectious disease isolation environment

BACKGROUND

Heat strain and dehydration can affect an individual's physical and mental performance. The purpose of this review was to examine the literature for the impact of heat strain on health care workers (HCWs) who care for patients with high-consequence infectious diseases (HCIDs) while wearing personal protective equipment (PPE), discuss the risks of impaired safety caused by heat strain and dehydration in HCID environments, identify attempts to combat PPE-related heat strain, recognize limitations, and provide suggestions for further research.

METHODS

A literature search was performed in PubMed or MEDLINE and Google Scholar. Authors screened abstracts for inclusion criteria and reviewed articles if the abstracts were considered to include information relevant to the aim.

RESULTS

The search terms yielded 30 articles that were sorted based on environment setting, physiological impact, and interventions.

DISCUSSION

The safety of the HCWs and patients can be enhanced through the development and usage of cooler, more comfortable PPE materials and ensembles to help slow the rate of dehydration and support the regulation of core body temperature.

CONCLUSIONS

Heat strain caused by wearing PPE is an occupational health concern for HCWs in the high-risk environment, that is, HCID care. Future studies are needed to develop innovative PPE ensembles that can reduce heat strain and improve well-being.

An Updated Review of Literature for Air Medical Evacuation High-Level Containment Transport During the Coronavirus Disease 2019 Pandemic

OBJECTIVE

In 2019, our team conducted a literature review of air medical evacuation high-level containment transport (AE-HLCT) of patients infected with high-consequence pathogens. Since that publication, the coronavirus disease 2019 (COVID-19) pandemic has resulted in numerous air medical evacuations. We re-examined the new literature associated with AE-HLCTs to determine new innovations developed as a result of the pandemic.

METHODS

A literature search was performed in PubMed/MEDLINE from February 2019 to October 2021. The authors screened abstracts for the inclusion criteria and reviewed full articles if the abstract was relevant to the aim.

RESULTS

Our search criteria yielded 19 publications. Many of the early transports of patients with COVID-19 used established protocols for AE-HLCT, which were built from the most recent transports of patients with Ebola virus disease. Innovations from the identified articles are subdivided into preflight considerations, in-flight operations, and postflight operations.

CONCLUSION

Lessons gleaned from AE-HLCTs of patients with COVID-19 in the early weeks of the pandemic, when little was known about transmission or the severity of the novel disease, have advanced the field of AE-HLCT. Teams that had never conducted such transports now have experience and processes. However, more research into AE-HLCT is needed, including research related to single-patient portable isolation units as well as containerized/multipatient transportation systems.

Characteristics Associated With Consistent Handwashing and Satisfaction in the Workplace: A Pilot Survey of U.S. Workers

BACKGROUND

This study seeks to determine what handwashing facilities are available to workers, predominantly in the manufacturing and service industries, to find out if their workplace has the appropriate resources to conduct proper handwashing and how that affects handwashing satisfaction.

METHODS

This cross-sectional study surveyed U.S. adult workers (N = 241) on their workplace handwashing equipment and facilities. The associations between demographic characteristics, consistent handwashing, and handwashing satisfaction were evaluated using Fisher's exact test.

FINDINGS

Eighty-eight percent of respondents reported consistent handwashing. Pulling a handle to exit the restroom was negatively associated with handwashing satisfaction (p = .004) and having difficulty with an automatic faucet or dispenser was negatively marginally significant in its association with handwashing consistency (p = .10).

CONCLUSION/APPLICATIONS TO PRACTICE

Greater understanding of the available equipment in workplace restroom facilities and how to improve selection and use of that equipment may improve workers' handwashing experiences.

A pilot study of core body temperatures in healthcare workers wearing personal protective equipment in a high-level isolation unit

Personal protective equipment used by healthcare workers to mitigate disease transmission risks while caring for patients with high-consequence infectious diseases can impair normal body cooling mechanisms and exacerbate physiological strain. Symptoms of heat strain (e.g., cognitive impairment, confusion, muscle cramping) are especially harmful in the high-risk environment of high-consequence infectious disease care. In this pilot study, the core body temperatures of healthcare workers were assessed using an ingestible, wireless-transmission thermometer while performing patient care tasks common to a high-level isolation unit setting in powered air purifying respirator (PAPR)-level. The objective was to determine the potential for occupational health hazard due to heat stress in an environmentally controlled unit. Maximum core temperatures of the six participants ranged from 37.4 °C (99.3 °F) to 39.9 °C (103.8°F) during the 4-hr shift; core temperatures of half (n = 3) of the participants exceeded 38.5 °C (101.3 °F), the upper core temperature limit. Future investigations are needed to identify other heat stress risks both in and outside of controlled units. The ongoing COVID-19 pandemic offers unique opportunities for field-based research on risks of heat stress related to personal protective equipment in healthcare workers that can lead to both short- and long-term innovations in this field.

Using a Critical Safety Behavior Scoring Tool for Just-in-Time Training for N95 Respirator Use

BACKGROUND

Historically, health care workers (HCWs) have exhibited marginal adherence to proper N95 respirator use. During the COVID-19 pandemic, HCWs with little to no prior training on N95 respirator use are relying on N95s as their primary respiratory protection. There is a need for simple, effective, and easily implementable just-in-time training (JITT) interventions to improve N95 respirator-related safety behavior. This study investigated two JITT interventions.

METHODS

A pilot experimental pretest posttest study design was used to evaluate two training interventions for N95 respirator donning/doffing performance at a Midwestern hospital system. HCW participants were randomly assigned to an intervention: one used a 4-minute instructional video alone, while the other used the same video but added a video reflection intervention (participant watched and scored a video of their own performance). All performances were scored using a 10-point Critical Safety Behavior Scoring Tool (CSBST).

FINDINGS

Sixty-two HCWs participated (32 video alone, 30 video reflection). The two groups' CSBST scores were not significantly different at pretest. Averaged participant scores on the CSBST improved immediately following both interventions. Scores were significantly higher on the posttest for the reflective practice intervention (p<.05). Years of experience and frequency of N95 respirator use did not predict pre or post scores.

CONCLUSIONS/APPLICATIONS TO PRACTICE

We provide evidence to support the use of a time-efficient JITT intervention to improve HCW N95 respirator donning/doffing practices during the COVID-19 pandemic and beyond. Hospital safety professionals should consider this type of training for HCWs required to wear respiratory protection.

A simulation approach to measure critical safety behaviors when evaluating training methods for respirator education in healthcare workers

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N95 respirators are a common tool in healthcare for airborne isolation and pandemic response.

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Simulation can be used to train healthcare workers.

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Reflective practice may be a training intervention to improve N95 respirator use compared to video alone.

Background

The N95 respirator is the most common safety tool used in hospitals to protect health care workers (HCW) from inhaling airborne particles. Focusing on HCW behavior related to respirator use is an effective route to improve HCW safety and respiratory health.

Methods

Participants were asked to perform the donning and doffing of an N95 respirator to camera. Then they were randomized to a video alone or a reflective practice intervention. After the intervention they repeated the donning and doffing to camera. A critical safety behavior scoring tool (CSBST) was developed to compare the performance of the participants over time at pretest, post-test and 1 month later for follow-up.

Results

The reflective practice intervention group was found to have significantly higher scores on the CSBST at post-test and follow-up than the video alone group. In the reflective practice intervention group, the participants perceived they were better at performing the N95 donning and doffing than the experts scored them.

Conclusions

The CSBST is a tool to measure the performance of HCWs on a specific targeted safety behaviors. The addition of a reflective practice intervention may result in a measurable and sustained improvement in the safety behaviors demonstrated when using the N95 respirator.

Review of Literature for Air Medical Evacuation High-Level Containment Transport

INTRODUCTION

Aeromedical evacuation (AE) is a challenging process, further complicated when a patient has a highly hazardous communicable disease (HHCD). We conducted a review of the literature to evaluate the processes and procedures utilized for safe AE high-level containment transport (AE-HLCT) of patients with HHCDs.

METHODS

A literature search was performed in PubMed/MEDLINE (from 1966 through January 2019). Authors screened abstracts for inclusion criteria and full articles were reviewed if the abstract was deemed to contain information related to the aim.

RESULTS

Our search criteria yielded 14 publications and were separated based upon publication dates, with the natural break point being the beginning of the 2013-2016 Ebola virus disease epidemic. Best practices and recommendations from identified articles are subdivided into pre-flight preparations, inflight operations, and post-flight procedures.

CONCLUSIONS

Limited peer-reviewed literature exists on AE-HLCT, including important aspects related to healthcare worker fatigue, alertness, shift scheduling, and clinical care performance. This hinders the sharing of best practices to inform evacuations and equip teams for future outbreaks. Despite the successful use of different aircraft and technologies, the unique nature of the mission opens the opportunity for greater coordination and development of consensus standards for AE-HLCT operations.

Ebola Virus Disease: Clinical Challenges, Recognition, and Management

The 2014 to 2016 Ebola outbreak response resulted in many lessons learned about biocontainment patient care, leading to enhanced domestic capabilities for highly infectious and hazardous communicable diseases. However, additional opportunities for improvement remain. The article identifies and describes key considerations and challenges for laboratory analysis, clinical management, transportation, and personnel management during the care of patients infected with Ebola or other special pathogens. Dedication to maintaining preparedness enables biocontainment patient care teams to perform at the highest levels of safety and confidence.

Need for Aeromedical Evacuation High-Level Containment Transport Guidelines

Circumstances exist that call for the aeromedical evacuation high-level containment transport (AE-HLCT) of patients with highly hazardous communicable diseases. A small number of organizations maintain AE-HLCT capabilities, and little is publicly available regarding the practices. The time is ripe for the development of standards and consensus guidelines involving AE-HLCT.

Observed variation in N95 respirator use by nurses demonstrating isolation care

Video review and scoring was used to evaluate the behaviors of nurses wearing N95 filtering face piece respirators while providing isolation care in a simulated patient care environment. This study yielded a detailed description of behaviors related to N95 respirator use in a health care setting. Developing a more robust and systematic behavior analysis tool for use in demonstration, simulation, and clinical care would allow for improved respiratory protection of health care workers.

Determining training and education needs pertaining to highly infectious disease preparedness and response: A gap analysis survey of US emergency medical services practitioners

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Gap-analysis survey concerning HID preparedness among U.S. EMS was conducted.

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Knowledge deficits for exposure routes of notable select HIDs were identified.

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Results indicate practitioners could gain from updated HID training and education.

Background

The Ebola virus disease outbreak highlighted the lack of consistent guidelines and training for workers outside of hospital settings. Specifically, emergency medical services (EMS) workers, who are frequently the first professionals to evaluate patients, often do not have advanced notice of patient diagnosis, and have limited time in their national curricula devoted to highly infectious disease (HID) identification and containment. All of these can place them at increased risk. To explore the depth of US EMS practitioners' HID training and education, a pilot gap analysis survey was distributed to determine where the aforementioned can be bolstered to increase occupational safety.

Methods

Electronic surveys were distributed to EMS organization members. The survey collected respondent willingness to encounter HID scenarios; current policies and procedures; and levels of knowledge, training, and available resources to address HIDs.

Results

A total of 2,165 surveys were initiated and collected. Eighty percent of frontline personnel were aware that their agency had an HID standard operating guideline. Almost 85% of respondents correctly marked routes of exposure for select HIDs. More than half of respondents indicated no maximum shift times in personal protective equipment.

Discussion

This research suggests EMS practitioners could benefit from enhanced industry-specific education, training, and planning on HID mitigation and management.

Conclusion

Strengthening EMS preparedness in response to suspected or confirmed HID cases may not only improve patient outcomes, but also worker and community safety.

A pilot survey of the U.S. medical waste industry to determine training needs for safely handling highly infectious waste

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Waste management is overlooked in the containment of highly infectious pathogens.

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Complexities of category A waste deter facilities' willingness to accept the waste.

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Enhanced training on properly handling and transporting category A waste is urged.

Background

The recent Ebola outbreak led to the development of Ebola virus disease (EVD) best practices in clinical settings. However, after the care of EVD patients, proper medical waste management and disposal was identified as a crucial component to containing the virus. Category A waste—contaminated with EVD and other highly infectious pathogens—is strictly regulated by governmental agencies, and led to only several facilities willing to accept the waste.

Methods

A pilot survey was administered to determine if U.S. medical waste facilities are prepared to handle or transport category A waste, and to determine waste workers' current extent of training to handle highly infectious waste.

Results

Sixty-eight percent of survey respondents indicated they had not determined if their facility would accept category A waste. Of those that had acquired a special permit, 67% had yet to modify their permit since the EVD outbreak. This pilot survey underscores gaps in the medical waste industry to handle and respond to category A waste. Furthermore, this study affirms reports a limited number of processing facilities are capable or willing to accept category A waste.

Conclusions

Developing the proper management of infectious disease materials is essential to close the gaps identified so that states and governmental entities can act accordingly based on the regulations and guidance developed, and to ensure public safety.

A gap analysis of the United States death care sector to determine training and education needs pertaining to highly infectious disease mitigation and management

PURPOSE

A United States industry-specific gap analysis survey of the death care sector-which comprises organizations and businesses affiliated with the funeral industry and the handling of human remains- was developed, the results analyzed, and training and education needs in relation to highly infectious disease mitigation and management were explored in an effort to identify where occupational health and safety can be enhanced in this worker population.

METHODS

Collaborating national death care organizations distributed the 47-question electronic survey. N = 424 surveys were initiated and results recorded. The survey collected death care sector-specific information pertaining to the comfortability and willingness to handle highly infectious remains; perceptions of readiness, current policies and procedures in place to address highly infectious diseases; current highly infectious disease training levels, available resources, and personal protective equipment.

RESULTS

One-third of respondents have been trained on how to manage highly infectious remains. There was a discrepancy between Supervisor/Management and Employee/Worker perceptions on employees' willingness and comfortability to manage potentially highly infectious remains. More than 40% of respondents did not know the correct routes of transmission for viral hemorrhagic fevers.

CONCLUSIONS

Results suggest death care workers could benefit from increasing up-to-date industry-specific training and education on highly infectious disease risk mitigation and management. Professional death care sector organizations are positioned to disseminate information, training, and best practices.

Advancing Preparedness for Highly Hazardous Contagious Diseases: Admitting 10 Simulated Patients with MERS-CoV

The Ebola outbreak of 2014-2016 highlighted the need for the development of a more robust healthcare infrastructure in the United States to provide isolation care for patients infected with a highly hazardous contagious disease. Routine exercises and skills practice are required to effectively and safely prepare care teams to confidently treat this special population of patients. The Nebraska Biocontainment Unit (NBU) at Nebraska Medicine in Omaha has been conducting exercises since 2005 when the unit was opened. Previous activities and exercises conducted by the Nebraska Biocontainment Unit have focused on transporting and caring for up to 3 patients with Ebola virus disease or other special pathogens. Changes in regional and national mandates, as well as the increased potential for receiving multiple patients at once, at a single location, have resulted in a greater demand to exercise protocols for the treatment of multiple patients. This article discusses in detail the planning, execution, and outcomes of a full-scale exercise involving 10 simulated patients with a highly infectious pathogen transmitted by the airborne route.

Personal protective equipment processes and rationale for the Nebraska Biocontainment Unit during the 2014 activations for Ebola virus disease

In response to the Ebola virus disease outbreak of 2014, specific procedures for personal protective equipment use were developed in the Nebraska Biocontainment Unit for the isolation care of patients with the illness. This brief report describes the 2 different levels used for patient care and presents the rationales for the specialized processes.

Learning from Ebola: Interprofessional practice in the Nebraska Biocontainment Unit

Caring for patients with Ebola virus disease (EVD) in the Nebraska Biocontainment Unit (NBU) has necessitated and enabled extensive interprofessional relationships and the creation of a collaborative care model. Critical aspects of NBU functionality include a constructive leadership environment, staff inclusion and consideration during protocol development, and a culture of partnership and communication.

Method for investigating nursing behaviors related to isolation care

BACKGROUND

Although an emphasis has been placed on protecting patients by improving health care worker compliance with infection control techniques, challenges associated with patient isolation do exist. To address these issues, a more consistent mechanism to evaluate specific clinical behaviors safely is needed.

METHODS

The research method described in this study used a high fidelity simulation using a live standardized patient recorded by small cameras. Immediately after the simulation experience, nurses were asked to view and comment on their performance. A demographic survey and a video recorded physical evaluation provided participant description. A questionnaire component 1 month after the simulation experience offered insight into the timing of behavior change in clinical practice.

RESULTS

Errors in behaviors related to donning and doffing equipment for isolation care were noted among the nurses in the study despite knowing they were being video recorded. This simulation-based approach to clinical behavior analysis provided rich data on patient care delivery.

CONCLUSION

Standard educational techniques have not led to ideal compliance, and this study demonstrated the potential for using video feedback to enhance learning and ultimately reduce behaviors, which routinely increase the likelihood of disease transmission. This educational research method could be applied to many complicated clinical skills.

The Nebraska experience in biocontainment patient care

Public health nurses in local health departments may receive the first call regarding a potential case of avian influenza, monkeypox, or viral hemorrhagic fever. One public health approach to containing these dangerous infectious disease outbreaks is the use of specialized isolation units. Early access to a biocontainment patient care unit (BPCU) for isolation during a bioterrorism or public health emergency event along with appropriate use of epidemiological and therapeutic interventions in the community may dramatically impact the size and severity of a disease outbreak (Smith et al., 2006). As emerging infectious agents, pandemics, resistant organisms, and terrorism continue to threaten human life; health care and emergency care providers must be empowered to work with nurses and other professionals in public health to plan for the consequences. This article describes the evolution of Nebraska's BPCU strategy for public health preparedness in the face of a biological threat. Design priorities, unit management, challenges, and lessons learned will be shared to guide others in establishing similar infrastructure.