Assessing the impact of cognitive impairment on the usability of an electronic medication delivery unit in an assisted living population.

PURPOSE: To examine the relationship between cognitive status and the usability of an integrated medication delivery unit (MDU) in older adults who reside in an Assisted Living Facility (ALF). METHODS: Subjects were recruited from a single ALF in Pittsburgh, PA. Usability testing sessions required subjects to execute tasks essential to using EMMA(®) (Electronic Medication Management Assistant), a Class II Federal Drug Administration (FDA) approved integrated MDU. Video coding allowed for quantification of usability errors observed during the testing sessions. Each subject's cognitive status was assessed using the Mini Mental State Exam (MMSE(®)) with scores <24 indicating cognitive impairment. Functional status was assessed using the Lawton Instrumental Activities of Daily Living (IADL) questionnaire, and a global assessment of subjective usability was assessed by completing the System Usability Scale (SUS). Non-parametric statistics and correlation analysis were used to determine whether significant differences existed between cognitively impaired and non-impaired subjects. RESULTS: Nineteen subjects were recruited and completed the protocol. The subject pool was primarily white, female, 80+ and in possession of above average education. There was a significant relationship between MMSE(®) scores and the percentage of task success (z=-2.03, p=0.04). Subjects with MMSE(®) scores of 24+ (no cognitive impairment) successfully completed an average of 69.0% of tasks vs. the 34.7% performance for those in the cognitively impaired group (<24). Six of the unimpaired group also succeeded at meeting the 85% (6 out of 7 correct) threshold. No subject with cognitive impairments (<24 MMSE(®)) completed more than 5/7 (71.4%) of their tasks. Two of the impaired subjects failed all of the tasks. Three of the MMSE(®)'s subsections (Date, Location and Spell 'world' backwards) were found to be significantly related (p<0.05) to the percentage of task success. Tasks success rates were related with IADL scores (z=-3.826, p<0.0001), and SUS scores (r=0.467, p=0.0429). CONCLUSIONS: Medication delivery units like EMMA(®) have the potential to improve medication management by combining reminder systems with telemedical monitoring and control capabilities. However, subjects judged to be "cognitively impaired" (<24 MMSE(®)) scored a significantly smaller percentage of task success than the "unimpaired" (>=24), suggesting that cognitive screening of patients prior to the use of EMMA(®) may be advisable. Further studies are needed to test the use of EMMA(®) amongst ALF residents without cognitive impairment to see if this technology can improve medication adherence.

Use and perceived benefits of mobile devices by physicians in preventing adverse drug events in the nursing home.

OBJECTIVE: Although mobile devices equipped with drug reference software may help prevent adverse drug events (ADEs) in the nursing home (NH) by providing medication information at the point of care, little is known about their use and perceived benefits. The goal of this study was to conduct a survey of a nationally representative sample of NH physicians to quantify the use and perceived benefits of mobile devices in preventing ADEs in the NH setting. DESIGN/SETTING/PARTICIPANTS: We surveyed physicians who attended the 2010 American Medical Directors Association Annual Symposium about their use of mobile devices, and beliefs about the effectiveness of drug reference software in preventing ADEs. RESULTS: The overall net valid response rate was 70% (558/800) with 42% (236/558) using mobile devices to assist with prescribing in the NH. Physicians with 15 or fewer years of clinical experience were 67% more likely to be mobile device users, compared with those with more than 15 years of clinical experience (odds ratio = 1.68; 95% confidence interval = 1.17-2.41; P = .005). For those who used a mobile device to assist with prescribing, almost all (98%) reported performing an average of 1 or more drug look-ups per day, performed an average of 1 to 2 lookups per day for potential drug-drug interactions (DDIs), and most (88%) believed that drug reference software had helped to prevent at least 1 potential ADE in the preceding 4-week period. CONCLUSIONS: The proportion of NH physicians who use mobile devices with drug reference software, although significant, is lower than in other clinical environments. Our results suggest that NH physicians who use mobile devices equipped with drug reference software believe they are helpful for reducing ADEs. Further research is needed to better characterize the facilitators and barriers to adoption of the technology in the NH and its precise impact on NH ADEs.

Home-care nurses' perceptions of unmet information needs and communication difficulties of older patients in the immediate post-hospital discharge period.

OBJECTIVE: To understand home-care nurses' perceptions of the post-hospitalisation information needs and communication problems of older patients, and how these factors might contribute to undesirable outcomes including poor patient reintegration into prior living environments and unplanned hospital readmissions. DESIGN: A ranked list of information needs experienced by patients was developed by two Nominal Group Technique (NGT) sessions from the perspective of home-care nurses. The list was combined with results from previously published work to develop a web-based survey administered to home-care nurses to elicit perceptions of patients' post-hospitalisation information needs. RESULTS: Seventeen nurses participated in the NGT sessions, producing a list of 28 challenges grouped into five themes: medications, disease/condition, non-medication care/treatment/safety, functional limitations and communication problems. The survey was sent to 220 home-care nurses, with a 54.1% (119/220) response rate. Respondents identified several frequent, high-impact information and communication needs that have received little attention in readmission literature, including information about medication regimens; the severity of their condition; the hospital discharge management process; non-medication care regimens such as wound care, use of durable medical equipment and home safety; the extent of care needed; and which providers are best suited to provide that care. Responses also identified several communication difficulties that may play a role in readmissions. CONCLUSIONS: Information needs and communication problems identified by home-care nurses expanded upon and reinforced results from prior studies. These results might be used to develop interventions that may improve information sharing among clinicians, patients and caregivers during care transitions to ensure patient reintegration into prior living environments, potentially preventing unplanned hospital readmissions.

Assessing the usability of a telemedicine-based Medication Delivery Unit for older adults through inspection methods.

Polypharmacy and medication non-adherence are common in older adults, potentially leading to medication-related problems and increased healthcare expenditures. Medication Delivery Units (MDUs) may improve adherence, but their interfaces may present usability challenges for older adults with age-related impairments. We used a combination of three inspection methods - heuristic evaluation, cognitive walkthrough, and simulated elderly interaction, to identify potential concerns with the usability of a commercially available telemedicine MDU. Each method revealed different problems, with repeated discoveries via different methods providing triangulated evidence. Despite the MDU's general usability, issues of varying severity were discovered. Significant usability issues associated with physical interactions with the MDU included loading and unloading the medication blister packs, and opening the delivered medication prior to administration. Less severe issues centered on small text sizes and poor user feedback. Further usability testing, involving older adults with a variety of impairments, is needed to validate findings.