Photonic crystals built by time in ancient Roman glass.

Ancient glass objects typically show distinctive effects of deterioration as a result of environmentally induced physicochemical transformations of their surface over time. Iridescence is one of the distinctive signatures of aging that is most commonly found on excavated glass. In this work, we present an ancient glass fragment that exhibits structural color through surface weathering resulting in iridescent patinas caused by silica reprecipitation in nanoscale lamellae. This archaeological artifact reveals an unusual hierarchically assembled photonic crystal with extremely ordered nanoscale domains, high spectral selectivity, and reflectivity (~90%), that collectively behaves like a gold mirror. Optical characterization paired with nanoscale elemental analysis further underscores the high quality of this structure providing a window into this sophisticated natural photonic crystal assembled by time.

Poly­d,l­lactic acid­enhanced atrophic scar treatment via transdermal microjet drug delivery in Asians.

BACKGROUND: Acne vulgaris often results in permanent scars, with atrophic scars being the most common type and posing a significant therapeutic challenge due to their prevalence and impact on patients' quality of life. Various treatment options exist, including the use of poly-d,l-lactic acid delivered via different methods. OBJECTIVE: This study aimed to assess the efficacy and safety of poly-d,l-lactic acid delivered via laser-assisted needle-free microjet injection for treating atrophic scars. METHODS: Five Korean participants with atrophic facial scars were recruited. Poly-d,l-lactic acid solution was administered via the Mirajet system in five sessions, with clinical assessments conducted at baseline, before each session, and at 12-week and 22-week follow-ups. Outcome measures included the Global Aesthetic Improvement Scale and patient satisfaction scores. RESULTS: Positive results were observed at the 12-week and 22-week follow-ups, with high patient satisfaction and improvements in atrophic scars and skin texture. Mild discomfort and transient side effects were reported, with no adverse events observed during the follow-up period. CONCLUSION: Poly-d,l-lactic acid delivered by a laser-assisted needle-free microjet injector was judged to be effective for improving atrophic the facial area. Further research, particularly through randomized controlled trials, is needed to validate these findings and assess the longer-term safety and sustainability of outcomes.

Use of platelet rich plasma for skin rejuvenation.

OBJECTIVE: Platelet-rich plasma (PRP) is recognized as a safe and effective therapy for regenerative skin healing and rejuvenation, utilizing autologous blood enriched with various growth factors. This review aims to assess the efficacy of PRP treatments for skin rejuvenation. METHODS: Keywords such as "platelet-rich plasma," "rejuvenation," "skin aging," and "wrinkles" were queried on Ovid, PubMed, and MEDLINE to identify pertinent studies on PRP treatment for skin rejuvenation. RESULTS: Analysis revealed that PRP treatment led to significant enhancements in multiple facial parameters after one to three sessions. Improvements were noted in skin pore size, texture, wrinkle reduction, pigmented spots, collagen density, hyaluronic acid levels, and protection against ultraviolet damage. Combining PRP with hyaluronic acid demonstrated a synergistic effect, particularly enhancing skin elasticity in patients with lower body mass index and firmness in individuals aged 50s and 60s. Incorporating both physical and biometric data for assessment proved superior to relying solely on physical observations for evaluating subtle skin quality and structural changes. CONCLUSION: This study underscores the efficacy of PRP monotherapy for skin rejuvenation and emphasizes the necessity of standardizing PRP preparation protocols in future investigations. Heightened awareness and advancements in technology have contributed to the emergence of higher-quality, less biased studies supporting PRP as a reliable and safe therapeutic option for skin rejuvenation.

Clinical Applications of Exosomes: A Critical Review.

Exosomes, small membrane-bound vesicles secreted by cells, have gained significant attention for their therapeutic potential. Measuring 30-100 nm in diameter and derived from various cell types, exosomes play a crucial role in intercellular communication by transferring proteins, lipids, and RNA between cells. This review analyzes existing literature on the clinical applications of exosomes. We conducted a comprehensive search of peer-reviewed articles and clinical trial data to evaluate the benefits, limitations, and challenges of exosome-based therapies. Key areas of focus included regenerative medicine, cancer therapy, gene therapy, and diagnostic biomarkers. This review highlights the vast clinical applications of exosomes. In regenerative medicine, exosomes facilitate tissue repair and regeneration. In cancer therapy, exosomes can deliver therapeutic agents directly to tumor cells. In gene therapy, exosomes serve as vectors for gene delivery. As diagnostic biomarkers, they are useful in diagnosing various diseases. Challenges such as the isolation, purification, and characterization of exosomes were identified. Current clinical trials demonstrate the potential of exosome-based therapies, though they also reveal significant hurdles. Regulatory issues, including the need for standardization and validation of exosome products, are critical for advancing these therapies. While significant progress has been made in understanding exosome biology, further research is essential to fully unlock their clinical potential. Addressing challenges in isolation, purification, and regulatory standardization is crucial for their successful application in clinical practice. This review provides a concise overview of the clinical applications of exosomes, emphasizing both their therapeutic promise and the obstacles that need to be overcome.

Complications in Pediatric Regional Anesthesia: An Analysis of More than 100,000 Blocks from the Pediatric Regional Anesthesia Network.

WHAT WE ALREADY KNOW ABOUT THIS TOPIC: WHAT THIS ARTICLE TELLS US THAT IS NEW: BACKGROUND:: Complications in pediatric regional anesthesia are rare, so a large sample size is necessary to quantify risk. The Pediatric Regional Anesthesia Network contains data on more than 100,000 blocks administered at more than 20 children's hospitals. This study analyzed the risk of major complications associated with regional anesthesia in children. METHODS: This is a prospective, observational study of routine clinical practice. Data were collected on every regional block placed by an anesthesiologist at participating institutions and were uploaded to a secure database. The data were audited at multiple points for accuracy. RESULTS: There were no permanent neurologic deficits reported (95% CI, 0 to 0.4:10,000). The risk of transient neurologic deficit was 2.4:10,000 (95% CI, 1.6 to 3.6:10,000) and was not different between peripheral and neuraxial blocks. The risk of severe local anesthetic systemic toxicity was 0.76:10,000 (95% CI, 0.3 to 1.6:10,000); the majority of cases occurred in infants. There was one epidural abscess reported (0.76:10,000, 95% CI, 0 to 4.8:10,000). The incidence of cutaneous infections was 0.5% (53:10,000, 95% CI, 43 to 64:10,000). There were no hematomas associated with neuraxial catheters (95% CI, 0 to 3.5:10,000), but one epidural hematoma occurred with a paravertebral catheter. No additional risk was observed with placing blocks under general anesthesia. The most common adverse events were benign catheter-related failures (4%). CONCLUSIONS: The data from this study demonstrate a level of safety in pediatric regional anesthesia that is comparable to adult practice and confirms the safety of placing blocks under general anesthesia in children.

Theory and New Applications of Ex Situ Lift Out.

The ex situ lift out (EXLO) adhesion forces are reviewed and new applications of EXLO for focused ion beam (FIB)-prepared specimens are described. EXLO is used to manipulate electron transparent specimens on microelectromechanical systems carrier devices designed for in situ electron microscope analysis. A new patented grid design without a support film is described for EXLO. This new slotted grid design provides a surface for holding the specimen in place and also allows for post lift out processing. Specimens may be easily manipulated into a backside orientation to reduce FIB curtaining artifacts with this slotted grid. Large EXLO specimens can be manipulated from Xe+ plasma FIB prepared specimens. Finally, applications of EXLO and manipulation of FIB specimens using a vacuum probe lift out method are shown. The vacuum probe provides more control for placing specimens on the new slotted grids and also allows for easy manipulation into a backside configuration.

Orientation precision of electron backscatter diffraction measurements near grain boundaries.

Electron backscatter diffraction (EBSD) has become a common technique for measuring crystallographic orientations at spatial resolutions on the order of tens of nanometers and at angular resolutions <0.1°. In a recent search of EBSD papers using Google Scholar™, 60% were found to address some aspect of deformation. Generally, deformation manifests itself in EBSD measurements by small local misorientations. An increase in the local misorientation is often observed near grain boundaries in deformed microstructures. This may be indicative of dislocation pile-up at the boundaries but could also be due to a loss of orientation precision in the EBSD measurements. When the electron beam is positioned at or near a grain boundary, the diffraction volume contains the crystal lattices from the two grains separated by the boundary. Thus, the resulting pattern will contain contributions from both lattices. Such mixed patterns can pose some challenge to the EBSD pattern band detection and indexing algorithms. Through analysis of experimental local misorientation data and simulated pattern mixing, this work shows that some of the rise in local misorientation is an artifact due to the mixed patterns at the boundary but that the rise due to physical phenomena is also observed.

Flying blind: sources of distress for family caregivers of palliative cancer patients managing pain at home.

Pain requiring treatment is experienced by many cancer patients at the end of life. Family caregivers are often directly implicated in pain management. This article highlights areas of psychosocial concern for family caregivers managing a family member's cancer pain at home as they engage in pain management processes. This article is based on the secondary analysis, guided by interpretive description, of data collected for a grounded theory study that explored the processes used by family caregivers to manage cancer patients' pain in the home. Interviews and field notes from 24 family caregiver interviews were examined to identify areas of family caregiver psychosocial distress. The analysis revealed that family caregivers experienced distress at different phases of the pain management process. Sources of distress for caregivers included feeling as though they were "in a prison" (overwhelmingly responsible), "lambs to slaughter" (unsupported), and "flying blind" (unprepared). In addition, family caregivers expressed distress when witnessing their loved one in pain and when pain crises invoked thoughts of death. In sum, family caregivers managing a loved one's cancer pain at home are at risk for psychosocial distress. This study identified four key sources of distress that can help health care professionals better understand the experiences of these family caregivers and tailor supportive interventions to meet their needs. Knowledge about sources of distress can help healthcare professionals understand the experiences of these family caregivers and tailor supportive interventions to meet their needs.

Adverse Effects Associated with Dermal Filler Treatments: Part II Vascular Complication.

Vascular complications arising from dermal filler treatments pose significant risks, including ischemia, tissue necrosis, and severe outcomes like blindness and pulmonary embolism. This study investigates the mechanisms of vascular complications, categorizing them into extravascular compression and intravascular emboli. Extravascular compression occurs when injected fillers compress adjacent blood vessels, leading to ischemia and potential necrosis, while intravascular emboli result from fillers entering blood vessels, causing blockages. The study emphasizes the importance of anatomical knowledge, careful injection techniques, and early intervention. Management strategies include the use of hyaluronidase to dissolve HA fillers, vasodilators to improve blood circulation, and hyperbaric oxygen therapy. The regions most susceptible to complications align with major arterial pathways, particularly the nasolabial folds and nasal region. The study also highlights the need for meticulous injection techniques, the use of cannulas over needles in high-risk areas, and the aspiration test to detect vessel penetration. Early detection and immediate intervention are crucial to mitigate adverse outcomes. Continuous education and training for practitioners, along with advancements in filler materials and injection methods, are essential for improving the safety of cosmetic procedures. This comprehensive understanding aids in preventing and managing vascular complications, ensuring better patient outcomes. The field of dermal filler treatments is advancing with new techniques and technologies, such as High-Resolution Ultrasound, Infrared Imaging, self-crossing hyaluronic acid filler, biodegradable microspheres, and microinjection.

Improving communicative access and patient experience in acute stroke care: An implementation journey.

INTRODUCTION: Patient experience for people with aphasia/families in acute care is frequently reported as negative, with communication barriers contributing to adverse events and significant long-term physical and psychosocial sequelae. Although the effectiveness of providing supported communication training and resources for health care providers in the stroke system is well documented, there is less evidence of implementation strategies for sustainable system change. This paper describes an implementation process targeting two specific areas: 1) improving Stroke Team communication with patients with aphasia, and 2) helping the Stroke Team provide support to families. The project aimed for practical sustainable solutions with potential contribution toward the development of an implementation practice model adaptable for other acute stroke contexts. METHODS: The project was designed to create a communicatively accessible acute care hospital unit for people with aphasia. The process involved a collaboration between a Stroke Team covering two units/wards led by nurse managers (19 participants), and a community-based Aphasia Team with expertise in Supported Conversation for Adults with Aphasia (SCA™) - an evidence-based method to reduce language barriers and increase communicative access for people with aphasia. Development was loosely guided by the integrated knowledge translation (iKT) model, and information regarding the implementation process was gathered in developmental fashion over several years. OUTCOMES: Examples of outcomes related to the two target areas include provision of accessible information about aphasia to patients as well as development of two new products - a short virtual SCA™ eLearning module relevant to acute care, and a pamphlet for families on how to keep conversation alive. Potential strategies for sustaining a focus on aphasia and communicative access emerged as part of the implementation process. CONCLUSIONS: This implementation journey allowed for a deeper understanding of the competing demands of the acute care context and highlighted the need for further work on sustainability of communicative access interventions for stroke patients with aphasia and their families.

Addressing the Real-World Challenges of Immunoresistance to Botulinum Neurotoxin A in Aesthetic Practice: Insights and Recommendations from a Panel Discussion in Hong Kong.

With increasing off-label aesthetic indications using higher botulinum neurotoxin A (BoNT-A) doses and individuals starting treatment at a younger age, particularly in Asia, there is a greater risk of developing immunoresistance to BoNT-A. This warrants more in-depth discussions by aesthetic practitioners to inform patients and guide shared decision-making. A panel comprising international experts and experienced aesthetic practitioners in Hong Kong discussed the implications and impact of immunoresistance to BoNT-A in contemporary aesthetic practice, along with practical strategies for risk management. Following discussions on a clinical case example and the results of an Asia-Pacific consumer study, the panel concurred that it is a priority to raise awareness of the possibility and long-term implications of secondary non-response due to immunoresistance to BoNT-A. Where efficacy and safety are comparable, a formulation with the lowest immunogenicity is preferred. The panel also strongly favored a thorough initial consultation to establish the patient's treatment history, explain treatment side effects, including the causes and consequences of immunoresistance, and discuss treatment goals. Patients look to aesthetic practitioners for guidance, placing an important responsibility on practitioners to adopt risk-mitigating strategies and adequately communicate important risks to patients to support informed and prudent BoNT-A treatment decisions.

Development and evaluation of the Basic Outcome Measure Protocol for Aphasia (BOMPA).

PURPOSE: The Basic Outcome Measure Protocol for Aphasia (BOMPA) is a practical tool that allows for a quick self-report on quality of life from the perspective of the person with aphasia, as well as a clinical evaluation of aphasia severity and the ability to participate in conversation. The primary aim of this paper is to describe development of BOMPA and report on results of an inter-rater reliability study involving speech-language pathology raters. METHOD: The inter-rater reliability study utilised a fully crossed design and included independent ratings of 12 videos by 20 speech-language pathologists. RESULT: Results indicate moderate to strong inter-rater reliability among participant speech-language pathology raters (0.65-0.96), as well as when comparing these participant ratings with an expert rater's gold standard (0.59-0.86). CONCLUSION: BOMPA may be a useful outcome measurement tool for time-pressed clinicians in clinical settings.

"Reflection and soul searching": Negotiating nursing identity at the fault lines of palliative care and medical assistance in dying.

Authorities within the field of palliative care frequently espouse that assisted death is - and must remain - separate from palliative care. This fault line, between palliative care and assisted death, has important implications for how we enact end-of-life care, particularly in jurisdictions where assisted death is legal. And yet little is known about how direct-care clinicians providing palliative care navigate this demarcation in everyday practice. This qualitative study reports on semi-structured interviews with 22 palliative care nurses from across Canada, where assisted death was legalized in 2016. Although a minority of participants did express categorical opinions around the (non) legitimacy of assisted death as an ethical end-of-life care option, most engaged in an ongoing and sometimes painful process of questioning and self-examination. Their ethical reflections were more nuanced than simply dismissing MAiD as incompatible with palliative care philosophy; yet this idea of incompatibility weighed heavily as they reasoned through their experiences and questioned their own perspectives. Nurses described grappling with the finality of assisted death, which contradicts their belief in the telos of palliative care; when adequately resourced, palliative care should be available to support people to live well before death. At the same time, commitment to important palliative care values such as the non-abandonment of dying people and respecting peoples' individual end-of-life choices reveal the possibility of overlap between the ethos of assisted death and that of palliative care nursing. Drawing on scholarship in feminist ethics, our study sheds light on the moral identity work that assisted dying catalyzes amongst palliative care nurses. We highlight what is at stake for them as they navigate a delicate tension in responding ethically to patients whose suffering motivates an interest in assisted death, from within a wider professional collective that upholds a master narrative about the incompatibility of assisted death and palliative care.

Palliative care: a need for a family systems approach.

OBJECTIVE: When a family member is faced with a terminal illness, the impending death presents a crisis and a challenge to the entire family as a system. This article highlights the importance of caring for a family when one member has a life-threatening illness, and describes the applicability of Family Systems Theory and its major tenets to the palliative cancer population. METHODS: A MedLine and CINAHL search of Family Systems Theory related papers was conducted. RESULTS: Research studies that have been done fail to capture the view of the entire family system, often limiting the perspectives of the family to one single member. The concepts of holism, balance, boundaries, and hierarchal subsystems must be addressed in the care of any family, including those who have a family member who is dying. SIGNIFICANCE OF RESULTS: A Family Systems Theory framework can be useful in helping health care providers, and particularly nurses, deliver optimal care to palliative cancer patients and their families and standardize the way research is done by providing an appropriate framework with which to study the family. In addition, the adoption of Family Systems Theory as the standard framework from which to study families in palliative care will provide consistency for future studies that is presently lacking. Finally, nursing interventions to care for the family are suggested based on Family Systems Theory.

Using dermal filler to camouflage forehead osteoma: A case report.

OBJECTIVE: To review the technique and outcomes of using dermal filler to camouflage forehead osteoma, providing a minimally invasive alternative to surgical excision. BACKGROUND: Forehead osteoma, commonly known as a forehead bump or bone spur, can be a cosmetic concern. Surgical excision, while effective, carries risks of scarring and postoperative complications. An innovative approach using dermal filler offers a potential solution. METHODS: A hyaluronic acid­based filler is injected into the deep subcutaneous plane over the bony prominence using a cannula. The fanning technique ensures even distribution of the filler. The procedure's safety, patient selection, and communication between the injector and patient are emphasized to achieve optimal results. RESULTS: The technique provides immediate aesthetic improvement with results that can last up to 12 months, depending on the filler used. While generally safe, potential complications include infections, swelling, asymmetry, and lumpiness. Proper technique, patient selection, and good communication between the injector and patient are critical to achieving optimal outcomes. CONCLUSION: Using dermal filler to camouflage forehead osteoma is a minimally invasive alternative to surgical excision, offering immediate and long­lasting results with minimal downtime and fewer risks. Further studies are needed to refine the technique and optimize outcomes.