Reevaluation of 1999 Health-Based Environmental Screening Levels (HBESLs) for Chemical Warfare Agents

This report evaluates whether new information and updated scientific models require that changes be made to previously published health-based environmental soil screening levels (HBESLs) and associated environmental fate/breakdown information for chemical warfare agents (USACHPPM 1999). Specifically, the present evaluation describes and compares changes that have been made since 1999 to U.S. Environmental Protection Agency (EPA) risk assessment models, EPA exposure assumptions, as well as to specific chemical warfare agent parameters (e.g., toxicity values). Comparison was made between screening value estimates recalculated with current assumptions and earlier health-based environmental screening levels presented in 1999. The chemical warfare agents evaluated include the G-series and VX nerve agents and the vesicants sulfur mustard (agent HD) and Lewisite (agent L). In addition, key degradation products of these agents were also evaluated. Study findings indicate that the combined effect of updates and/or changes to EPA risk models, EPA default exposure parameters, and certain chemical warfare agent toxicity criteria does not result in significant alteration to the USACHPPM (1999) health-based environmental screening level estimates for the G-series and VX nerve agents or the vesicant agents HD and L. Given that EPA's final position on separate Tier 1 screening levels for indoor and outdoor worker screening assessments has not yet been released as of May 2007, the study authors find that the 1999 screening level estimates (see Table ES.1) are still appropriate and protective for screening residential as well as nonresidential sites. As such, risk management decisions made on the basis of USACHPPM (1999) recommendations do not require reconsideration. While the 1999 HBESL values are appropriate for continued use as general screening criteria, the updated '2007' estimates (presented below) that follow the new EPA protocols currently under development are also protective. When EPA finalizes and documents a position on the matter of indoor and outdoor worker screening assessments, site-specific risk assessments should make use of modified models and criteria. Screening values such as those presented in this report may be used to assess soil or other porous media to determine whether chemical warfare agent contamination is present as part of initial site investigations (whether due to intentional or accidental releases) and to determine whether weather/decontamination has adequately mitigated the presence of agent residual to below levels of concern. However, despite the availability of scientifically supported health-based criteria, there are significant resources needs that should be considered during sample planning. In particular, few analytical laboratories are likely to be able to meet these screening levels. Analyses will take time and usually have limited confidence at these concentrations. Therefore, and particularly for the more volatile agents, soil/destructive samples of porous media should be limited and instead enhanced with headspace monitoring and presence-absence wipe sampling

A scoping review of the pharmaceutical care needs of people with sensory loss

Objectives This scoping review collated evidence of the pharmaceutical care needs of people with sensory loss (SL). Methods Electronic databases were searched with no limit on year of publication: Medline (1946); Embase; Cinahl (1979); and Web of Science (1985). Search terms included the following: pharmacy; sight/hearing/dual impairment. Studies were included if they involved people with SL requiring pharmaceutical care and/or pharmacists/pharmacy support staff providing pharmaceutical care for people with SL. All study designs were eligible. This was a scoping review, and as such, the quality of studies was not formally evaluated. Key findings Eleven studies were included. People with SL had lower levels of medication knowledge than their peers without SL. People with SL were identified as being at higher risk of iatrogenic harm than people without SL. Communication was a barrier to the provision of pharmaceutical care for people with hearing loss, with pharmacists relying on the provision of written information. The prevalence of SL increases with age, yet only two studies included older people. No studies involved family or carers of people with SL, people with dual loss or people with SL receiving polypharmacy. Conclusions There is a paucity of data regarding the pharmaceutical care needs of people with SL. Unmet pharmaceutical care needs put people with SL at increased risk of harm from their medicines. A detailed understanding of the needs of people with SL is required which will inform future delivery of pharmaceutical care for this vulnerable population

"We're really not ready for this": A Qualitative Exploration of Community Pharmacy Personnel's Perspectives on the Pharmaceutical Care of Older People with Sensory Impairment

Background In most developed countries there is an increasing ageing population living in the community with long-term conditions and sensory impairment (sight; hearing; dual impairment). Community pharmacy personnel are key providers of pharmaceutical care to this patient population. Objective This study explored community pharmacy personnel's experiences with providing pharmaceutical care for older people with sensory impairment. Methods Semi-structured telephone interviews were conducted with community pharmacy personnel across Scotland between 2015 and 2016. Results Thirty interviews were completed with community pharmacists (n = 17) and other pharmacy personnel (n = 13). Two overarching themes emerged: safety and communication. Interviewees reported patients' reluctance to disclose their impairment “patients are very good at hiding it” and had considerable safety concerns “it's a fear that they're going to take too much … accidentally taking the same medicine twice”. Difficulties in communication were cited “no matter what you do or how you label things, leaflets and telling people, things can go wrong”. Additionally, interviewees identified training needs to increase their disability awareness and to identify strategies to provide safe and reliable pharmaceutical care to this vulnerable group “We don't specifically have anything in place to deal with anyone with impairments of that kind”. Conclusions This is the first in-depth exploration of providing pharmaceutical care to older people with sensory impairment from the perspective of community pharmacy personnel. Strategies are needed to encourage older people to disclose their sensory impairment. Education and training are also needed to optimise the provision of pharmaceutical care to this vulnerable population

'Has she seen me?':A multiple methods study of the pharmaceutical care needs of older people with sensory impairment in Scotland

Objectives To explore the pharmaceutical care needs of, and service provision to, older people with sensory impairment (visual, hearing and dual impairment) on prescribed polypharmacy (≥4 medicines) in Scotland. Design Interviews were conducted with older people with sensory impairment and community pharmacy personnel, which informed the content of a subsequent national cross-sectional survey of community pharmacists. Setting Scotland, 2015–2016. Participants Older people with sensory impairment and community pharmacy personnel. Results Interviews were completed with 23 older people with sensory impairment (dual impairment n=13, visual or hearing impairment n=5 of each) and 30 community pharmacy personnel from eight of 14 Scottish Health Boards. A total of 171 survey responses were received. Older people reported that they did not always disclose their sensory impairment to pharmacy personnel. They also reported that medicines were difficult to identify particularly when their name, shape or colour changed. Pharmacy personnel relied on visible cues such as white canes or guide dogs to identify visual impairment and suggested that hearing loss was less visible and more difficult to identify. Many assistive aids in support of medicine management, such as dosette boxes, seemed inadequate for complex medication regimens. Few community pharmacy personnel reported receiving training in the care of people with sensory impairment. Conclusions This is the first comprehensive, multistakeholder, in-depth exploration of the pharmaceutical care needs of older people with sensory impairment. Strategies are needed to enable people with sensory impairment to disclose their impairment to pharmacy personnel (and other healthcare providers). Community pharmacy personnel require training to deliver person-centred pharmaceutical care for older people with sensory impairment particularly regarding communication with individuals in this vulnerable population

The burden of managing medicines for older people with sensory impairment : an ethnographic-informed study

Background: Older age is associated with increased prevalence of sensory impairment and use of medicines. Objectives: To explore the daily ‘medicine journey’ of older people with sensory impairment. Methods: The study used ethnographic-informed methods (using audio-, photo- and video-recordings, diary notes and semi-structured interviews with researchers) and involved community-dwelling adults (aged > 65) in Scotland, with visual and/or hearing impairment and using > 4 medicines. Data analysis used the constant comparative method. Results: Fourteen older people with sensory impairment participated and used a mean of 11.0 (SD 5.0) medicines (range 5 to 22). Participants reported difficulties with medicine ordering, obtaining, storage, administration and disposal. They used elaborate strategies to manage their medicines including bespoke storage systems, fixed routines, simple aids, communication, and assistive technologies. Conclusion: Older people with sensory impairment experience substantial burden, challenges and risk with medicines management. Tailored medicine regimens and assistive technologies could provide greater support to older people with sensory impairment

Assistive technologies and strategies to support the medication management of individuals with hearing and/or visual impairment : a scoping review

Background -- Individuals with sensory impairment (visual and/or hearing) experience health inequalities and increased risk of medication-related iatrogenic disease compared with the general population. Assistive technologies and tailored strategies could support medication management for individuals with sensory impairment to reduce harm and increase the likelihood of therapeutic benefit. Objective -- This scoping review identified assistive technologies and strategies to support medication management of /for people with hearing and/or visual impairment. Methods -- Standard scoping review methodology was used to identify studies that evaluated technologies or strategies designed to support people with sensory impairment with independent medicine management. Electronic databases were searched (MEDLINE, Embase, CINAHL, ACM, Cochrane) from inception to 18/07/22. Independent duplicate screening, selection and data extraction was undertaken. Results -- Of 1,231 publications identified 18 were included, reporting 17 studies, 16 of which evaluated technologies to assist people with visual impairment and one study to assist people with hearing impairment. The range of technologies and devices included: applications for android phones (n=6); eyedrop assistance devices (n=5); audio-prescription labelling/reading systems (n=2); touch-to-speech devices (n=2); continuous glucose monitoring system (n=1); and magnifying technology (n=1). Ten studies tested early-stage prototypes. Most participants could operate the technologies effectively and deemed them to be useful. Conclusions -- Despite the increasing number of medicine-related assistive technologies there has been limited empirical evaluation of their effectiveness for supporting individuals with sensory impairment. Prototypes appear to be useful for people with visual or hearing impairment, however wider ‘real-life’ testing is needed to confirm the benefits of these technologies

Developing Health-Based Pre-Planning Clearance Goals for Airport Remediation Following a Chemical Terrorist Attack: Decision Criteria for Multipathway Exposure Routes

In the event of a chemical terrorist attack on a transportation hub, post-event remediation and restoration activities necessary to attain unrestricted facility re-use and re-entry could require hours to multiple days. While timeframes are dependent on numerous variables, a primary controlling factor is the level of pre-planning and decision-making completed prior to chemical release. What follows is the second of a two-part analysis identifying key considerations, critical information and decision criteria to facilitate post-attack and post-decontamination consequence management activities. Decision criteria analysis presented here provides first-time, open-literature documentation of multi-pathway, health-based remediation exposure guidelines for selected toxic industrial compounds, chemical warfare agents, and agent degradation products for pre-planning application in anticipation of a chemical terrorist attack. Guideline values are provided for inhalation and direct ocular vapor exposure routes as well as percutaneous vapor, surface contact, and ingestion. Target populations include various employees as well as transit passengers. This work has been performed as a national case study conducted in partnership with the Los Angeles International Airport and The Bradley International Terminal. All recommended guidelines have been selected for consistency with airport scenario release parameters of a one-time, short-duration, finite airborne release from a single source followed by compound-specific decontamination

A qualitative exploration of the experiences of community dwelling older adults with sensory impairment/s receiving polypharmacy on their pharmaceutical care journey

Background Most developed countries have increasing numbers of community dwelling older people with both multi-morbidity and sensory impairment that includes visual, hearing or dual impairment. Older people with sensory impairment are more likely to have chronic health conditions and to be in receipt of polypharmacy (>4 medicines). It is important to understand their experience of pharmaceutical care provision to facilitate a safe, appropriate and person centred approach. Aim this study explored the pharmaceutical care experiences and perspectives of older people with sensory impairment receiving polypharmacy. Design and setting exploratory qualitative study with semi-structured telephone or face-to-face interviews with community dwelling older adults with sensory impairment receiving polypharmacy in Scotland in 2016. Methods in total, 23 interviews were conducted with older people from seven of the 14 Scottish Health Board areas. Subjects over half the participants (n = 12) had dual sensory impairment, six had visual impairment and five had hearing impairment. Results three overarching themes were identified reflecting different stages of participants’ pharmaceutical care journey: ordering and collection of prescriptions; medicine storage; and administration. At each stage of their journey, participants identified barriers and facilitators associated with their pharmaceutical care. Conclusions this is the first comprehensive, in-depth exploration of the pharmaceutical care journey needs of older people with sensory impairment. As the number of community dwelling older people with sensory impairment and polypharmacy increases there is a requirement to identify challenges experienced by this population and offer solutions for safe and effective pharmaceutical care provision

Developing Health-Based Pre-Planning Clearance Goals for Airport Remediation Following Chemical Terrorist Attack: Introduction and Key Assessment Considerations

In the event of a chemical terrorist attack on a transportation hub, post-event remediation and restoration activities necessary to attain unrestricted facility reuse and re-entry could require hours to multiple days. While restoration timeframes are dependent on numerous variables, a primary controlling factor is the level of pre-planning and decision-making completed prior to chemical terrorist release. What follows is the first of a two-part analysis identifying key considerations, critical information, and decision criteria to facilitate post-attack and post-decontamination consequence management activities. A conceptual site model and human health-based exposure guidelines are developed and reported as an aid to site-specific pre-planning in the current absence of U.S. state or Federal values designated as compound-specific remediation or re-entry concentrations, and to safely expedite facility recovery to full operational status. Chemicals of concern include chemical warfare nerve and vesicant agents and the toxic industrial compounds phosgene, hydrogen cyanide, and cyanogen chloride. This work has been performed as a national case study conducted in partnership with the Los Angeles International Airport and The Bradley International Terminal. All recommended guidelines have been selected for consistency with airport scenario release parameters of a one-time, short-duration, finite airborne release from a single source followed by compound-specific decontamination