Development and Evaluation of a User-Centered Mobile Telestroke Platform.

Background:Reperfusion is the most effective acute treatment for ischemic stroke within a narrow therapeutic time window. Ambulance-based telestroke is a novel way to improve stroke diagnosis and timeliness of treatment. This study aims to (1) assess the usability of our ambulance-based telestroke platform and (2) identify strengths and limitations of the system from the user's perspective.Materials and Methods:An ambulance was equipped with a mobile telemedicine system to perform remote stroke assessments. Scripted scenarios were performed by actors during transport and evaluated by physicians using the National Institutes of Health Stroke Scale (NIHSS). Scores obtained during transport were compared with original scripted NIHSS scores. Participants completed the System Usability Scale (SUS), NASA Task Load Index (NASA TLX), audio/video quality scale, and a modified Acceptability of Technology survey to assess perceptions and usability. In addition, interviews were conducted to evaluate user's experience. Descriptive analysis was used for all surveys. Weighted kappa statistics was used to compare the agreement in NIHSS scores.Results:Ninety-one percent (59/65) of mobile scenarios were completed. Median completion time was 9 min (range 4-17 min). There was moderate inter-rater agreement (weighted kappa = 0.46 [95% confidence interval 0.33-0.60, p = 0.0018]) among mobile and original scripted scenarios. The mean SUS score was 68.8 (standard deviation = 15.9). There was variability between usability score and formative feedback among all end-users in the areas of usability issues (i.e., audibility and equipment stability) and safety.Conclusion:Before implementation of a mobile prehospital telestroke program, the use of combined clinical simulation and Plan-Do-Study-Act methodology can improve the quality and optimization of the telemedicine system.

Occupational Injuries and Exposures among Emergency Medical Services Workers.

OBJECTIVE: Emergency medical services (EMS) workers incur occupational injuries at a higher rate than the general worker population. This study describes the circumstances of occupational injuries and exposures among EMS workers to guide injury prevention efforts. METHODS: The National Institute for Occupational Safety and Health collaborated with the National Highway Traffic Safety Administration to conduct a follow-back survey of injured EMS workers identified from a national sample of hospital emergency departments (EDs) from July 2010 through June 2014. The interviews captured demographic, employment, and injury event characteristics. The telephone interview data were weighted and are presented in the results as national estimates and rates. RESULTS: Telephone interviews were completed by 572 EMS workers treated in EDs, resulting in a 74% cooperation rate among all EMS workers who were identified and successfully contacted. Study respondents represented 89,100 (95% CI 54,400-123,800) EMS workers who sought treatment in EDs over the four-year period. Two-thirds were male (59,900, 95% CI 35,200-84,600) and 42% were 18-29 years old (37,300, 95% CI 19,700-54,700). Three-quarters of the workers were full-time (66,800, 95% CI 39,800-93,800) and an additional 10% were part-time or on-call (9,300, 95% 4,900-13,700). Among career EMS workers, the injury rate was 8.6 per 100 full-time equivalent EMS workers (95% CI 5.3-11.8). Over half of all injured workers had less than ten years of work experience. Sprains and strains accounted for over 40% of all injuries (37,000, 95% CI 22,000-52,000). Body motion injuries were the leading event (24,900, 95% CI 14,900-35,000), with 90% (20,500, 95% CI 12,800-32,100) attributed to lifting, carrying, or transferring a patient and/or equipment. Exposures to harmful substances were the second leading event (24,400, 95% CI 11,700-37,100). CONCLUSION: New and enhanced efforts to prevent EMS worker injuries are needed, especially those aimed at preventing body motion injuries and exposures to harmful substances. EMS and public safety agencies should consider adopting and evaluating injury prevention measures to improve occupational safety and promote the health, performance, and retention of the EMS workforce.

A National Description of Violence toward Emergency Medical Services Personnel.

INTRODUCTION: EMS personnel often work in unpredictable environments and are at high risk for sustaining occupational injuries. One potential source of injury that is of growing concern is violence toward EMS personnel. OBJECTIVE: To describe the prevalence of violence directed at EMS personnel by type and source, and to identify characteristics associated with experiencing violence. METHODS: The 2013 Longitudinal EMT Attributes and Demographics Study contained 14 items assessing violence experienced in the past 12 months. Violence was categorized by type (physical or verbal) and by source (the patient or a patient's family member or bystander). EMS personnel characteristics included sex, age, race, marital status, certification level, firefighter, volunteerism, agency type, and community size. Descriptive and comparative analyses were performed on personnel whose primary role was providing patient care. Multivariable logistic regression modelling was used to assess associations between provider characteristics and experiencing violence. RESULTS: A total of 2,515/4,238 (59.3%) responses were received and 1,789 met inclusion criteria. Over two-thirds (69.0%) experienced at least one form of violence in the past 12 months. Verbal violence was more prevalent than physical (67.0% vs. 43.6%). Using multivariable logistic regression to control for other demographic and employment characteristics, paramedics had nearly triple the odds of experiencing physical (OR = 2.67, 95% CI = 2.06-3.46) and verbal (OR = 2.63, 95% CI = 1.99-3.46) violence as EMTs. Urban personnel had increased odds of experiencing physical (OR = 1.53, 95% CI = 1.21-1.93) and verbal violence (OR = 1.32, 95% CI = 1.02-1.71). Each additional weekly transport increased the odds of experiencing physical (OR = 1.04, 95% CI = 1.03-1.05) and verbal (OR = 1.04, 95% CI = 1.03-1.06) violence by 4%. Those who were volunteers at their main EMS jobs had decreased odds of experiencing physical (OR = 0.68, 95% CI = 0.50-0.92) and verbal (OR = 0.59, 95% CI = 0.44-0.78) violence. CONCLUSIONS: Over two-thirds of EMS personnel experienced at least one form of violence in the last 12 months. Demographic and employment characteristics associated with experiencing violence were identified. Our findings may be used in education initiatives to raise awareness of the high prevalence of violence toward EMS personnel and factors associated with experiencing violence.