Design and Development of a Powered Myoelectric Elbow Orthosis for Neuromuscular Injuries.

INTRODUCTION: Recovering from neuromuscular injuries or conditions can be a challenging journey that involves complex surgeries and extensive physical rehabilitation. During this process, individuals often rely on orthotic devices to support and enable movement of the affected limb. However, users have criticized current commercially available powered orthotic devices for their bulky and heavy design. To address these limitations, we developed a novel powered myoelectric elbow orthosis. MATERIALS AND METHODS: The orthosis incorporates 3 mechanisms: a solenoid brake, a Bowden cable-powered constant torque elbow mechanism, and an extension limiter. The device controller and battery are in a backpack to reduce the weight on the affected arm. We performed extensive calculations and testing to ensure that the orthosis could withstand at least 15 Nm of elbow torque. We developed a custom software effectively control the orthosis, enhancing its usability and functionality. A certified orthotist fitted a subject who had undergone a gracilis free functioning muscle transfer surgery with the device. We studied the subject under Mayo clinic IRB no. 20-006849 and obtained objective measurements to assess the orthosis's impact on upper extremity functionality during daily activities. RESULTS: The results are promising since the orthosis significantly improved elbow flexion range of motion by 40° and reduced compensatory movements at the shoulder (humerothoracic joint) by 50°. Additionally, the subject was able to perform tasks which were not possible before, such as carrying a basket with weights, highlighting the enhanced functionality provided by the orthosis. CONCLUSION: In brief, by addressing the limitations of existing devices, this novel powered myoelectric elbow orthosis offers individuals with neuromuscular injuries/conditions improved quality of life. Further research will expand the patient population and control mechanisms.

An international, multicenter post hoc analysis comparing in-person and virtual medication management strategies in post-ICU recovery clinics.

DISCLAIMER: In an effort to expedite the publication of articles, AJHP is posting manuscripts online as soon as possible after acceptance. Accepted manuscripts have been peer-reviewed and copyedited, but are posted online before technical formatting and author proofing. These manuscripts are not the final version of record and will be replaced with the final article (formatted per AJHP style and proofed by the authors) at a later time. PURPOSE: To compare the incidence of ICU pharmacist interventions in intensive care unit recovery center (ICU-RC) in-person and virtual clinic visits. METHODS: This was a post hoc analysis of interventions implemented by ICU pharmacists among adult patients who were referred to 12 ICU-RCs across the United States and the United Kingdom between September 2019 and July 2021, as reported in a previously published study "An International, Multicenter Evaluation of Comprehensive Medication Management by Pharmacists in ICU Recovery Centers." That study included patients who received a comprehensive medication review by an ICU pharmacist. Medication-related interventions performed by an ICU pharmacist during ICU-RC in-person clinic visits were compared to those performed during virtual clinic visits. RESULTS: There were 507 patients referred to an ICU-RC, of whom 474 patients attended a clinic visit. Of those, 472 received a comprehensive medication review, with 313 patients attending in-person visits and 159 patients attending virtual visits. The incidence of medication-related interventions implemented was higher in the ICU-RC in-person clinic group compared to the virtual clinic group (86.5% vs 79.2%, P = 0.04). There was no difference in the median number of ICU pharmacist interventions per patient between the in-person and virtual clinic groups (2 vs 2, P = 0.13). An ICU admission diagnosis was an independent predictor of medication-related interventions among all patients. CONCLUSION: The incidence of ICU pharmacist interventions was higher at ICU-RC in-person clinic visits compared to virtual clinic visits. Pharmacists aid in meeting the complex pharmacologic challenges of post-intensive care syndrome in both settings.

Safety of Antiretroviral Exposure During Pregnancy: Opportunities to Close Data Gaps.

Pregnant persons with chronic health conditions often require pharmacotherapy to remain healthy. The Antiretroviral Pregnancy Registry is a prospective, international, voluntary, and exposure registry that collects information on antiretroviral (ARV) exposure; however, a minority of providers use the registry, leaving critical gaps to guide prescribing in this population. The Task Force for the Elimination of Perinatal HIV Transmission in the United States, funded by the Centers for Disease Control and Prevention, has identified the monitoring of ARV safety as a paramount concern in the ongoing mission to eliminate perinatal human immunodeficiency virus (HIV) transmission. As active members of this task force, we urge all healthcare providers who care for pregnant individuals to prioritize reporting all ARV exposures to the registry.

Discrimination of Microplastics and Phytoplankton Using Impedance Cytometry.

Both microplastics and phytoplankton are found together in the ocean as suspended microparticles. There is a need for deployable technologies that can identify, size, and count these particles at high throughput to monitor plankton community structure and microplastic pollution levels. In situ analysis is particularly desirable as it avoids the problems associated with sample storage, processing, and degradation. Current technologies for phytoplankton and microplastic analysis are limited in their capability by specificity, throughput, or lack of deployability. Little attention has been paid to the smallest size fraction of microplastics and phytoplankton below 10 µm in diameter, which are in high abundance. Impedance cytometry is a technique that uses microfluidic chips with integrated microelectrodes to measure the electrical impedance of individual particles. Here, we present an impedance cytometer that can discriminate and count microplastics sampled directly from a mixture of phytoplankton in a seawater-like medium in the 1.5-10 µm size range. A simple machine learning algorithm was used to classify microplastic particles based on dual-frequency impedance measurements of particle size (at 1 MHz) and cell internal electrical composition (at 500 MHz). The technique shows promise for marine deployment, as the chip is sensitive, rugged, and mass producible.

Uncertainty in Postpartum Permanent Contraception Decision-Making: Physician and Patient Perspectives.

PURPOSE: We sought to understand how patients and physicians conceptualize uncertainty in the permanent contraception decision-making process. BASIC PROCEDURES: In 2022-2023, we interviewed postpartum patients with a documented desire for permanent contraception (n = 81) and their delivering physicians (n = 67). Eligible patients gave birth at one of our four study hospitals in California, Ohio, Illinois, and Alabama. We used rapid content analysis and thematic content analysis to develop and refine themes related to uncertainty in permanent contraceptive decision-making. MAIN FINDINGS: Most patients reported full certainty in their decision regarding permanent contraception, although some expressed doubts. After receiving permanent contraception, some patients discussed grief but overall affirmed their decision. One patient said they wished they had considered other contraceptive options. Physicians reported using a range of strategies to safeguard from patient regret, including ensuring patients were 100% certain with their decision, inferring certainty based on their characteristics, asking patients to think through all scenarios that could affect decision-making, and repeat counseling during multiple interactions. PRINCIPAL CONCLUSIONS: Patient experiences reveal the depth, fluidity, and nuance of patients' contraceptive decision-making processes. Physicians sometimes failed to grapple with this nuance by centering potential regret in their counseling. Personalized and supportive contraceptive counseling that acknowledges the complexity of contraceptive decision-making is imperative. Shared decision-making can help ensure patients can make informed and autonomous decisions about their reproductive lives.

Patient experiences with telehealth treatment for opioid use disorder in Alabama.

INTRODUCTION: Telehealth-only provision of buprenorphine for the treatment of opioid use disorder (OUD) was first made possible during the COVID-19 pandemic. However, Alabama instituted a law in July 2022 that mandated an annual in-person visit in order to receive this treatment. In July 2023, our usually telehealth-only group established a temporary clinic in Birmingham to meet this requirement. METHODS: The study administered a survey instrument to patients at the time of clinic check-in. RESULTS: 158 of 160 (98.8 %) patients completed the survey. Mean distance traveled was 86.4 (standard deviation (SD) 53.7) miles; time required for travel was mean 1.6 (SD 1.0) hours. Twenty-five patients (15.8 %) reported needing to find childcare to attend the visit and 40 patients (25.3 %) reported missing work to attend. Patients disagreed (median 2 on 1-5 Likert scale, interquartile range (IQR) <1-3>) that it is important to see their provider in-person, that seeing their provider in-person improves care or improves their ability to succeed in treatment, and that they have other OUD treatment resources in their community. Patients strongly agreed (median 5, IQR <5-5>) that OUD can be treated by telehealth without the need for an in-person visit. CONCLUSIONS: An annual in-person visits requirement to receive telehealth OUD services imposed a significant burden on patients, was not desired by patients, and may be associated with harm.

Countering vaccine misinformation: Designing a learning resource for healthcare workers in eight countries.

In response to the pervasive challenges posed by online health misinformation, our objective was to develop a training program aimed at enhancing the skills and confidence of healthcare workers in recognizing and effectively responding to misinformation, with a particular focus on vaccinations. This article discusses the design of a training program aimed at equipping healthcare workers with the skills to combat health misinformation, offering theoretical foundations for integrating evidence-based strategies into problem-based learning to help learners retain and apply information, and also shares examples and insights gained from its application across diverse learner groups. The training curriculum integrates evidence-based misinformation intervention strategies, learner engagement strategies and draws from authentic scenarios across diverse cultural contexts. The trainings were administered from January through July 2023 to 287 participants across eight countries (Cameroon, Guyana, India, Kenya, Mozambique, Nigeria, Philippines, and the United States) in English, French, Spanish, and Portuguese. Throughout the implementation of the training, a key emphasis was placed on a learner-driven approach that fostered real-world application. Participants engaged in role-playing exercises and problem-solving sessions, enabling them to practice their newfound skills in a controlled setting. Our findings contribute to the literature of participatory, problem-based learning for healthcare professionals and vaccine communication and misinformation response, and can serve as a resource for practitioners implementing similar trainings.

Distinct pathway for evolution of enhanced receptor binding and cell entry in SARS-like bat coronaviruses.

Understanding the zoonotic risks posed by bat coronaviruses (CoVs) is critical for pandemic preparedness. Herein, we generated recombinant vesicular stomatitis viruses (rVSVs) bearing spikes from divergent bat CoVs to investigate their cell entry mechanisms. Unexpectedly, the successful recovery of rVSVs bearing the spike from SHC014, a SARS-like bat CoV, was associated with the acquisition of a novel substitution in the S2 fusion peptide-proximal region (FPPR). This substitution enhanced viral entry in both VSV and coronavirus contexts by increasing the availability of the spike receptor-binding domain to recognize its cellular receptor, ACE2. A second substitution in the spike N-terminal domain, uncovered through forward-genetic selection, interacted epistatically with the FPPR substitution to synergistically enhance spike:ACE2 interaction and viral entry. Our findings identify genetic pathways for adaptation by bat CoVs during spillover and host-to-host transmission, fitness trade-offs inherent to these pathways, and potential Achilles' heels that could be targeted with countermeasures.

Validation of Pelvis and Trunk Range of Motion as Assessed Using Inertial Measurement Units.

Trunk and pelvis range of motion (ROM) is essential to perform activities of daily living. The ROM may become limited with aging or with neuromusculoskeletal disorders. Inertial measurement units (IMU) with out-of-the box software solutions are increasingly being used to assess motion. We hypothesize that the accuracy (validity) and reliability (consistency) of the trunk and pelvis ROM during steady-state gait in normal individuals as measured using the Opal APDM 6 sensor IMU system and calculated using Mobility Lab version 4 software will be comparable to a gold-standard optoelectric motion capture system. Thirteen healthy young adults participated in the study. Trunk ROM, measured using the IMU was within 5-7 degrees of the motion capture system for all three planes and within 10 degrees for pelvis ROM. We also used a triad of markers mounted on the sternum and sacrum IMU for a head-to-head comparison of trunk and pelvis ROM. The IMU measurements were within 5-10 degrees of the triad. A greater variability of ROM measurements was seen for the pelvis in the transverse plane. IMUs and their custom software provide a valid and reliable measurement for trunk and pelvis ROM in normal individuals, and important considerations for future applications are discussed.

Understanding Kenyan policymakers' perspectives about the introduction of new maternal vaccines.

New vaccine policy adoption is a complex process, especially in low-and-middle-income countries (LMICs), requiring country policymakers to navigate challenges such as competing priorities, human and financial resource constraints, and limited logistical capacity. Since the Expanded Programme on Immunization's (EPI) beginning, most new vaccine introductions under this structure have not been aimed at adult populations. The majority of adult vaccines offered under the EPI are not typically tested among and tailored for pregnant persons, except those that are specifically recommended for pregnancy. Given that new maternal vaccines, including RSV and GBS vaccines, are on the horizon, it is important to understand what barriers may arise during the policy development and vaccine introduction process. In this study, we sought to understand information needs among maternal immunization policymakers and decision-makers in Kenya for new vaccine maternal policy adoption through in-depth interviews with 20 participants in Nakuru and Mombasa counties in Kenya. Results were mapped to an adapted version of an established framework by Levine et al., (2010) focused on new vaccine introduction in LMICs. Participants reported that the policy process for new maternal vaccine introduction requires substantial evidence as well as coordination among diverse stakeholders. Importantly, our findings suggest that the process for new maternal vaccines does not end with the adoption of a new policy, as intended recipients and various actors can determine the success of a vaccine program. Previous shortcomings, in Kenya, and globally during HPV vaccine introduction show the need to allocate adequate resources in education of communities given the sensitive target group. With maternal vaccines targeting a sensitive group - pregnant persons- in the pipeline, we are at an opportune time to understand how to ensure successful vaccine introduction with optimal acceptance and uptake, while also addressing vaccine hesitancy to increase population benefit.

Remote Blood Pressure Management for Postpartum Hypertension: A Cost-Effectiveness Analysis.

BACKGROUND: Recognizing the importance of close follow-up after hypertensive disorders of pregnancy (HDP), many centers have initiated programs to support postpartum remote blood pressure management (RBPM). OBJECTIVE: We aim to evaluate the cost-effectiveness of RBPM to inform scalability of these programmatic interventions. STUDY DESIGN: We conducted a cost-effectiveness analysis of utilizing RBPM to manage postpartum hypertension versus usual care. The modeled RBPM included provision of a home blood pressure (BP) monitor, guidance on warning symptoms, instructions on BP self-monitoring twice daily, and clinical staff to manage population-level BPs as appropriate. Usual care was defined as guidance on warning symptoms and recommendation for one outpatient visit for BP monitoring within a week of discharge. We designed a Markov model that ran over 14 one-day cycles to reflect the initial two weeks after delivery when most ED visits and readmissions occur and RBPM is clinically anticipated to be most impactful. Parameter values for base case scenario were derived from both internal data and literature review. QALYs were calculated over the first year postpartum and reflected the short-term morbidities associated with HDP that, for most birthing people, resolve by two weeks postpartum. Sensitivity analyses were performed to assess strength and validity of the model. Primary outcome was incremental cost effectiveness ratio (ICER) defined as cost needed to gain one quality adjusted life year (QALY). Secondary outcome was incremental cost per readmission averted. Analyses were performed from a societal perspective. RESULTS: In the base case scenario, utilizing RBPM was the dominant strategy (i.e., cost less, higher QALYs). In univariate sensitivity analyses, the most cost-effective strategy shifted to usual care when cost of readmission fell below $2,987.92 and rate of reported severe range BP with a response in RBPM was less than 1%. Assuming a willingness-to-pay of $100,000 per QALY, utilizing RBPM was cost-effective in 99.28% of simulations in a Monte Carlo analysis. Using readmissions averted as a secondary effectiveness outcome, the incremental cost per readmission averted was $145.00. CONCLUSION: Remote blood pressure management of postpartum hypertension is cost saving with better outcomes compared to usual care. These data can be used to inform future dissemination of and support funding for RBPM programs.

Models of care: Opportunities and challenges.

Perinatal mental health models can broadly be described by scope and structure. Within these two broad domains lies an array of diverse methodologies that have attempted to increase access and coordination of care. These efforts have uncovered many opportunities that, if addressed, may improve our current parent and infant outcomes within our healthcare system and community. Furthermore, there are several opportunities that, if addressed, will result in more equitable, inclusive care. These include being attentive to the unique needs of vulnerable populations, emphasizing community efforts, and closing the current gaps in legislation.

A VHH single-domain platform enabling discovery and development of monospecific antibodies and modular neutralizing bispecifics against SARS-CoV-2 variants.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to evolve, escape coronavirus disease 2019 therapeutics and vaccines, and jeopardize public health. To combat SARS-CoV-2 antigenic escape, we developed a rapid, high-throughput pipeline to discover monospecific VHH antibodies and iteratively develop VHH-Fc-VHH bispecifics capable of neutralizing emerging SARS-CoV-2 variants. By panning VHH single-domain phage libraries against ancestral or beta spike proteins, we discovered high-affinity VHH antibodies with unique target epitopes. Combining two VHHs into a tetravalent bispecific construct conferred broad neutralization activity against multiple variants and was more resistant to antigenic escape than the monospecific antibody alone. Following the rise of the Omicron variant, a VHH in the original bispecific construct was replaced with another VHH discovered against the Omicron BA.1 receptor binding domain; the resulting bispecific exhibited neutralization against both BA.1 and BA.5 sublineage variants. A heavy chain-only tetravalent VHH-Fc-VHH bispecific platform derived from humanized synthetic libraries held a myriad of unique advantages: (i) synthetic preconstructed libraries minimized risk of liabilities and maximized discovery speed, (ii) VHH scaffolds allowed for a modular "plug-and-play" format that could be rapidly iterated upon as variants of concern arose, (iii) natural dimerization of single VHH-Fc-VHH polypeptides allowed for straightforward bispecific production and purification methods, and (iv) multivalent approaches enhanced avidity boosting effects and neutralization potency, and conferred more robust resistance to antigenic escape than monovalent approaches against specific variants. This iterative platform of rapid VHH discovery combined with modular bispecific design holds promise for long-term viral control efforts.

In vivo human knee varus-valgus loading apparatus for analysis of MRI-based intratissue strain and relaxometry.

The diagnosis of early-stage osteoarthritis remains as an unmet challenge in medicine and a roadblock to evaluating the efficacy of disease-modifying treatments. Recent studies demonstrate that unique patterns of intratissue cartilage deformation under cyclic loading can serve as potential biomarkers to detect early disease pathogenesis. However, a workflow to obtain deformation, strain maps, and quantitative MRI metrics due to the loading of articular cartilage in vivo has not been fully developed. In this study, we characterize and demonstrate an apparatus that is capable of applying a varus-valgus load to the human knee in vivo within an MRI environment to enable the measurement of cartilage structure and mechanical function. The apparatus was first tested in a lab environment, then the functionality and utility of the apparatus were examined during varus loading in a clinical 3T MRI system for human imaging. We found that the device enables quantitative MRI metrics for biomechanics and relaxometry data acquisition during joint loading leading to compression of the medial knee compartment. Integration with spiral DENSE MRI during cyclic loading provided time-dependent displacement and strain maps within the tibiofemoral cartilage. The results from these procedures demonstrate that the performance of this loading apparatus meets the design criteria and enables a simple and practical workflow for future studies of clinical cohorts, and the identification and validation of imaging-based biomechanical biomarkers.

Modeling the impact of decreasing waiting period length for Medicaid sterilization: A multi-site cohort study.

OBJECTIVE: To evaluate the impact of length of the Medicaid sterilization waiting period and postpartum permanent contraception fulfillment. STUDY DESIGN: Simulations from a retrospective cohort study estimating the potential increase in permanent contraception within 365 days of delivery. RESULTS: In our sample of 2076 patients, 61% achieved permanent contraception with the current waiting period of 30 days. With the waiting period hypothetically reduced to 15, 3, 1, and 0 days, 62.9%, 63.7%, 64.5%, and 75% patients, respectively, would have achieved permanent contraception. CONCLUSIONS: As potential Medicaid sterilization policy revisions are considered, understanding the impact on fulfillment rates is critical.

The Emerging Landscape of Social Media Influencers in Public Health Collaborations: A Scoping Review.

Social media content creators or "influencers" are an increasingly influential voice in the public discourse generally, including global perceptions and practices related to health. In response, public health entities are increasingly embracing social media influencers (SMIs) as potential health promotion collaborators. Despite burgeoning interest in the potential of these partnerships, research evaluating this strategy remains limited. To address this gap, we conducted a scoping review to characterize and describe the current landscape of health promotion collaborations with SMIs with a focus on current practices. A search of six electronic databases (PubMed, SCOPUS, Communication & Mass Media Complete, CINAHL Plus, Web of Science, and APA PsycINFO) revealed wide-ranging and inconsistent approaches to these partnerships, including their optimal practices, data reported, and their evaluation criteria. Among the 658 articles initially identified, 15 publications met our inclusion criteria, spanning 7 countries, 8 social media platforms, 11 distinct health topics, and 21 different outcome measures. Basic information necessary for comparing across interventions was often lacking. We noted a lack of consensus on what constitutes an SMI with 53% of included studies lacking any definition or criteria. Although SMIs offer substantial promise as an emerging opportunity for health promotion, particularly for populations that may be otherwise difficult to identify or reach, this review highlights how the current lack of standardized methodologies and metrics prevents meaningful comparisons between collaborations and evaluations of their effectiveness. Based on these findings, we propose four key criteria to aid practitioners in the implementation and evaluation of SMI collaborations.

Naloxone prescription fills and use by patients treated for opioid use disorder by telehealth.

Background: It is unknown how many people in treatment for opioid use disorder (OUD) have naloxone, use naloxone, and what their perceptions and barriers to obtaining it are. Methods: This was a survey of patients treated in a large telehealth OUD program. Between December 6, 2023 and January 6, 2024, all patients who had access to the program's phone app (n=17,899 individuals, of whom 12,887 were in active treatment), were invited to complete an anonymous online survey. Results: There were 701 individuals who completed the survey. Nearly all patients (n=693, 99%) knew what naloxone is, and the majority (n=601, 86%) knew how to administer it. A quarter of these patients (n=177, 25%) reported either having naloxone used on themselves or using it on someone else. 161 patients (23%) reported taking a naloxone training course. Of patients who recalled receiving a prescription, 72% (n=382) filled the prescription, and 85% (n=321) reported that insurance paid for all or part of it. If filled, the naloxone was reported as used by 30 (8%) patients. If not filled, reasons were: already had it (n=55, 37%), did not think it was needed (n=54, 37%) or too expensive (n=36, 23%). Patients who reported knowing how to administer naloxone (OR 2.63 (95% CI 1.35-5.00) were more likely to fill the prescription. Conclusions: Patients prescribed naloxone in a telehealth treatment program filled the prescription 72% of the time, and when it was filled, 8% used the naloxone. Education and cost policy changes may reduce barriers to obtaining naloxone.