Beyond the surface: unveiling gaps in medical education through eyes of diverse learners.

Inadequate education regarding disease manifestations in diverse skin colors hinders diagnosis and exacerbates health disparities. All levels of medical trainees report low confidence in accurately identifying disease in skin of color (SOC). To help further elucidate these concerns, our research aims to assess medical student confidence in recognizing cutaneous diseases in SOC and their viewpoints regarding SOC education within their institution. An eight-question, open-ended survey was provided to medical students before and after a SOC presentation. The survey assessed participants' confidence in their diagnostic ability and perspectives on educational material. Among the 70 attendees, 58 (82.8%) and 64 (91.4%) completed the pre- and post-seminar surveys, respectively. There was a significant discrepancy in confidence levels when assessing cutaneous manifestations of internal pathology in light (Monk Skin Colors 1-5) versus dark (Monk Skin Colors 6-10) skin (p < 0.009). Notably, 78.7% (37/47) perceived the institutional learning materials as insufficient for SOC. Post-seminar reflections indicated that 87.2% (40/46) of students lacked confidence in diagnosing SOC, with 78.7% (32/46) citing inadequate curriculum coverage as the cause. An additional 8.5% (6/46) identified the predominance of white-centric medical descriptions as a hindrance. Students collectively called for improved educational approaches, including better visual representation of diseases in darker skin. Medical education must continue to strive for increased SOC representation to train competent physicians in treating a diverse patient population and reduce disparities in SOC patients.

The Cost of a Locum: A Simulation to Determine When You Are Paying Too Much for Your Anesthesia Locum Tenens Coverage.

BACKGROUND: Current research on locum tenens physicians has primarily focused on their safety, reliability, and patient outcomes, leaving a significant gap in understanding the financial implications of their employment in health systems. Amidst a persistent shortage of physicians across specialties, healthcare organizations have increasingly relied on locum tenens to meet the rising demand for clinical services. This study aims to bridge the knowledge gap by evaluating the financial feasibility of employing locum tenens physicians compared to full-time anesthesiologists, given the context of growing physician shortages and increasing healthcare demands. METHODS:  We developed a Python simulation model to compare the costs of hiring locum tenens versus full-time anesthesiologists. The model inputs included hourly rates for both locum tenens and full-time anesthesiologists and the upfront hiring costs for full-time physicians. By plotting these costs against each other, the model identifies the breakeven point: the number of working hours at which the cost of employing a locum tenens physician equals that of hiring a full-time physician. Utilizing Monte Carlo simulations with data from the Northeastern United States, we assessed the variability and determined an average breakeven point across different scenarios. RESULTS:  The Monte Carlo simulation, based on 10,000 iterations, revealed an average breakeven point of 665 hours, corresponding to just over 11 weeks of 60-hour workweeks. This suggests that for any locum tenens engagement exceeding this duration, hiring a full-time anesthesiologist becomes more cost-effective for the healthcare institution. The simulation also showed that 28% of scenarios had a breakeven point below 60 days, highlighting the financial dynamics and decision-making complexities in employing locum tenens versus full-time physicians. CONCLUSIONS:  The findings indicate that employing locum tenens physicians for durations shorter than 665 hours remains financially viable compared to the option of hiring full-time anesthesiologists. However, the significant variability observed in the simulations underscores the importance of context in making staffing decisions. Healthcare organizations must consider the specific needs and circumstances of their operations when deciding between hiring locum tenens and full-time physicians, especially for longer-term coverage requirements.

ChatGPT-4 Performance on USMLE Step 1 Style Questions and Its Implications for Medical Education: A Comparative Study Across Systems and Disciplines.

We assessed the performance of OpenAI's ChatGPT-4 on United States Medical Licensing Exam STEP 1 style questions across the systems and disciplines appearing on the examination. ChatGPT-4 answered 86% of the 1300 questions accurately, exceeding the estimated passing score of 60% with no significant differences in performance across clinical domains. Findings demonstrated an improvement over earlier models as well as consistent performance in topics ranging from complex biological processes to ethical considerations in patient care. Its proficiency provides support for the use of artificial intelligence (AI) as an interactive learning tool and furthermore raises questions about how the technology can be used to educate students in the preclinical component of their medical education. The authors provide an example and discuss how students can leverage AI to receive real-time analogies and explanations tailored to their desired level of education. An appropriate application of this technology potentially enables enhancement of learning outcomes for medical students in the preclinical component of their education.

Experience with dronabinol consumption facilitated a stimulant effect of alcohol and affected alcohol-related changes in frontal cortical endocannabinoid levels in male rats.

Combined use of cannabis and alcohol is common in adolescents. However, the extent to which such polydrug exposure affects the brain and behaviors remains under-investigated in preclinical studies. This study tested the hypothesis that combined exposure of Δ-9-tetrahydrocannabinol (THC), the main psychoactive constituent of cannabis, and alcohol will have additive effects on cognitive impairments and altered endocannabinoid levels in the hippocampus and frontal cortex. Male Long Evans rats were provided with daily access to cookies laced with oil or dronabinol, a synthetic THC, during adolescence. Three days after discontinuation of edible THC, the effect of orally administered 3 g/kg alcohol on Barnes maze performance was assessed. The results showed that experience with edible THC facilitated the occurrence of increased moving speed on the maze induced by repeated alcohol administration. However, contrasting to the hypothesis, the combined THC and alcohol exposure did not lead to additive deficits in learning and memory on the Barnes maze. While little effect on endocannabinoid levels was observed in the hippocampus, acute abstinence from alcohol significantly reduced endocannabinoid levels in the frontal cortex. In particular, reduction of N-oleoyl ethanolamine (OEA) and N-stearoyl ethanolamine (SEA) were robust and had an interactive effect with discontinuation from edible THC. These findings add to the scarce literature on THC and alcohol associated changes in endocannabinoid levels and provide insights to future investigations on the roles of OEA and SEA on physiology and behaviors following THC and alcohol co-exposure during adolescence.

Gene expression changes in therapeutic ultrasound-treated venous leg ulcers.

Introduction: Low-frequency, low-intensity ultrasound has been previously shown to promote healing of chronic wounds in humans, but mechanisms behind these effects are poorly understood. The purpose of this study was to evaluate gene expression differences in debrided human venous ulcer tissue from patients treated with low-frequency (20 kHz), low-intensity (100 mW/cm2) ultrasound compared to a sham treatment in an effort to better understand the potential biological mechanisms. Methods: Debrided venous ulcer tissue was collected from 32 subjects one week after sham treatment or low-frequency, low-intensity ultrasound treatment. Of these samples, 7 samples (3 ultrasound treated and 4 sham treated) yielded sufficient quality total RNA for analysis by ultra-high multiplexed PCR (Ampliseq) and expression of more than 24,000 genes was analyzed. 477 genes were found to be significantly differentially expressed between the ultrasound and sham groups using cut-off values of p < 0.05 and fold change of 2. Results and Discussion: The top differentially expressed genes included those involved in regulation of cell metabolism, proliferation, and immune cell signaling. Gene set enrichment analysis identified 20 significantly enriched gene sets from upregulated genes and 4 significantly enriched gene sets from downregulated genes. Most of the enriched gene sets from upregulated genes were related to cell-cell signaling pathways. The most significantly enriched gene set from downregulated genes was the inflammatory response gene set. These findings show that therapeutic ultrasound influences cellular behavior in chronic wounds as early as 1 week after application. Considering the well-known role of chronic inflammation in impairing wound healing in chronic wounds, these results suggest that a downregulation of inflammatory genes is a possible biological mechanism of ultrasound-mediated venous chronic wound healing. Such increased understanding may ultimately lead to the enhancement of ultrasound devices to accelerate chronic wound healing and increase patient quality of life.

CARE program: NCI and FDA interagency collaborations to support oncology small business entrepreneurs.

The National Cancer Institute's Small Business Innovation Research Development Center (NCI SBIR) supports the commercialization of novel cancer-related technologies by providing resources to 300-400 small businesses each year. Whereas Federal funding is crucial for the translation of technologies to the clinic, the majority of these technologies will need to undergo regulatory review to reach clinical testing. Many small businesses find navigating their regulatory pathway challenging, largely due to lack of regulatory expertise on small startup teams with limited revenue. In collaboration with the US Food and Drug Administration (FDA), NCI SBIR launched a new regulatory assistance program called Connecting Awardees with Regulatory Experts (CARE). The goal of the CARE program is to connect NCI-funded small businesses with the FDA to receive feedback on their regulatory questions during early-stage product development. The program has a multipronged support approach and also educates companies about the FDA process and existing resources. To date, 141 companies have participated in the interagency program. Follow-up surveys indicate that the program guided the companies in planning the next regulatory steps for their technology development (89%) and provided critical information that changed their future NCI small business grant project aims (81%). Overall, companies reported they would recommend the program to other companies (90%). This paper will discuss the CARE program outcomes as well as other NCI and FDA collaborations that support early-stage small businesses, including the joint development of funding opportunities and online resources that focus on the oncology startup community.

Treatment of Reactive Keratoacanthomas with Acitretin Following Multiple Excisions and Mohs Surgery for Recurrent Squamous Cell Carcinoma.

Surgical intervention is seen as the gold standard in the treatment of Squamous cell carcinoma. Yet, in cases of recurrence, repeated surgical procedures may unwittingly foment the rise of reactive keratoacanthomas at the surgical margins or edge of a newly placed skin graft.

Leukocytoclastic Vasculitic Rash Following Second Dose of Moderna COVID-19 Vaccine.

The immunization against coronavirus disease (COVID-19) via vaccination serves as a significant milestone in the fight against the pandemic. Rapid introduction of various COVID-19 vaccines to stem the spread of virus has researchers scrambling to document the adverse effects left in its wake. Thus far, there have been singular examples of cutaneous vasculitis associated with COVID-19. A history of vasculitis leaves little error to miss its inclusion in diagnostic differentials. It also invokes the physiologic possibility that afflicted patients possess a more susceptible landscape for recurrence that was then triggered by the vaccine when compared with those who lack similar history. In our case report, we build on those findings with one of the first documented examples of vaccination-induced vasculitic rash in a previously asymptomatic patient.

Investor initiatives program: Public-private partnerships to expedite commercialization for NCI-funded small business entrepreneurs.

The National Cancer Institute's Small Business Innovation Research Development Center (NCI SBIR) provides federal research and development funding and commercialization resources to more than 400 small businesses each year developing novel technologies to prevent, diagnose, and treat cancer. Although federal funding is vital for life science startups at the early stage of development, it is often insufficient to translate the technology from discovery to commercial product. Early-stage startups must connect to follow-on capital and resources to bring NCI-funded technologies to patients. Most startups face challenges in securing additional funding due to lack of access to investors and strategic partners and the ability to effectively pitch their technology. In 2015, the NCI SBIR started the Investor Initiatives program to connect funded small businesses with targeted investors and strategic partners to address the aforementioned obstacles. This program leverages an extensive network of investors and partners to conduct business-focused reviews and provide pitch coaching. The program incentivizes earlier collaborations between NCI-funded companies and private investors through various channels. The program has supported 117 companies from years 2016-2019 to attend 27 investor showcase events. Follow-up surveys show that the program and the assistance offered by NCI SBIR have contributed to a total of 32 completed deals as of April 29, 2020. This paper will discuss the Investor Initiatives program and its outcomes from 2016 to 2019 and demonstrate the effectiveness of a federal program that leverages public-private partnerships to assist portfolio companies with raising follow-on funding to accelerate the translation of research into clinical practice.

Joint and separate exposure to alcohol and ∆9-tetrahydrocannabinol produced distinct effects on glucose and insulin homeostasis in male rats.

Cannabis and alcohol co-use is common, and the trend may increase further given the current popularity of cannabis legalization. However, the metabolic consequences of such co-use are unclear. Here, we investigated how co-administration of alcohol and ∆9-tetrahydrocannabinol (THC), the main psychoactive constituent of cannabis, affects body weight and visceral adiposity, and glucose and insulin homeostasis in rats. For 16 consecutive days during adolescence, male rats drank saccharin or alcohol after receiving subcutaneous oil or THC injections in Experiment 1 and voluntarily consumed alcohol, THC edible, or both drugs in Experiment 2. Experiment 1 showed that following abstinence, drug co-exposure reduced visceral fat and the amount of insulin required to clear glucose during an oral glucose tolerance test (OGTT). In Experiment 2, rats received a high-fat diet (HFD) after 3-week abstinence. Although adolescent drug use did not interact with the HFD to worsen hyperglycemia and hyperinsulinemia during an OGTT, HFD-fed rats that co-used alcohol and THC had the lowest insulin levels 75 min after an insulin injection, suggesting an altered rate of insulin secretion and degradation. These results suggest that THC and alcohol co-exposure can distinctly alter the physiology of glucose and insulin homeostasis in a rodent model.

Diagnosis of Primary Colorectal Carcinoma with Primary Breast Cancer: Associations or Connections?

Introduction Although once very uncommon, multiple primary malignant neoplasms (MPMN) are becoming an increasingly popular subject in medical literature. With 182,000 new diagnoses per annum, breast cancer is the most frequently diagnosed cancer amongst women in the United States. Colorectal cancer remains the second most commonly diagnosed cancer in females, and the third in males worldwide. Methods In order to gather literature on synchronous and metachronous occurring breast and colon cancer, we searched PubMed using keywords such as 'colorectal cancer', 'breast cancer', and 'MPMN'. We searched through case reports, case series, clinical trials, letters to the editor, and retrospective series. We included any manuscript in English published between January 1990 and January 2019. The articles featured patients who had primary colorectal cancer with primary breast cancer. Articles featuring patients with more than two malignancies or malignancies other than colorectal and breast cancer were excluded. Furthermore, any metastatic cancers were excluded as well. This narrowed our search down from over 100 manuscripts to just four.  Results Fortunately, the prognosis was found to be no different for these patients with MPMN assuming diagnosis and treatment are performed in a timely fashion. Additionally, it appears that although a patient with one primary cancer is at a greater risk for the development of a second cancer, it is still an odd phenomenon and thus an unlikely occurrence. Conclusion Detection of one cancer increases the odds of detecting another cancer. Hence, it is important to consider the possibility of a synchronous tumor in a patient with a newly diagnosed colon tumor, as well as to not only consider disease recurrence when following up post-resection.

Development of Low Frequency (20-100 kHz) Clinically Viable Ultrasound Applicator for Chronic Wound Treatment.

This paper details the systematic approach used to develop a viable clinical prototype of a therapeutic ultrasound applicator and discusses the rationale and deliberations that led to the design strategy. The applicator was specifically devised to treat chronic wounds and-to the best of the author's knowledge-is the first truly wearable device with a proven record of reducing healing time, directly translating to a reduction of healthcare costs. The prototype operates in the kHz (20-100) range of frequencies and uses noncavitational and nonthermal levels of ultrasound energy. Hence, in the absence of inertial cavitation and temperature elevation, the tissue-ultrasound interaction is considered to be dependent on stable cavitation (if any) and radiation force. The peak acoustic output pressure amplitude is limited to 55 kPa, corresponding to a spatial peak-temporal peak intensity of 100 mW/cm2. This level of intensity is considered to be safe to apply for extended (up to 4 h) periods of time. The patch-like applicator design is suitable to be embedded in wound dressing. With its lightweight (<20 g) and circular (40 mm dia) disk-shape architecture, the applicator is well suited for chronic wound treatment. A small ( n = 8 ) pilot study on the effects of the applicator on diabetic ulcers (DUs) healing time is presented. The average time to wound closure was 4.7 weeks for subjects treated with the active ultrasound applicator, compared to 12 weeks for subjects treated with a sham applicator, suggesting that patients with DUs may benefit from the proposed treatment.

Combined ∆9-tetrahydrocannabinol and moderate alcohol administration: effects on ingestive behaviors in adolescent male rats.

RATIONALE: Whereas co-use of alcohol and marijuana is prevalent in adolescents, the effects of such drug co-exposure on ingestive and cognitive behaviors remain largely unexplored. We hypothesized that co-exposure to alcohol and ∆9-tetrahydrocannabinol (THC), the main psychoactive constitute of marijuana, alters feeding behavior and cognition differently from either drug alone. METHODS: Male rats received daily THC (3-20 mg/kg/day) or oil vehicle through subcutaneous injection or consumption of a cookie with access to saccharin or saccharin-sweetened alcohol during adolescence (P30-45). Barnes maze and sucrose preference tests were applied to assess spatial memory and behavioral flexibility and abstinence-related anhedonia, respectively. RESULTS: Subcutaneous THC did not affect alcohol intake but dose-dependently increased acute (3 h) chow intake and reduced weight gain. Moderate alcohol consumption reduced the acute hyperphagic effect of subcutaneous THC. By contrast, oral THC at a dose > 5 mg/kg robustly reduced alcohol intake without affecting 3-h chow intake. At this dose, some rats stopped consuming the THC-laced cookies. Furthermore, oral THC reduced weight gain, and co-exposure to alcohol alleviated this effect. Chronic subcutaneous, but not oral, THC reduced sucrose intake during abstinence. Neither treatment impaired cognitive behaviors in the Barnes maze. CONCLUSION: Moderate alcohol and THC consumption can interact to elicit unique outcomes on ingestive behaviors and energy balance. Importantly, this study established a novel model of voluntary alcohol and THC consumption for studying mechanisms underlying the consequences of adolescent onset co-use of the two drugs.

Effects of Non-thermal, Non-cavitational Ultrasound Exposure on Human Diabetic Ulcer Healing and Inflammatory Gene Expression in a Pilot Study.

The purpose of this clinical study was to assess, in a limited patient population, the potential for a novel advanced wound care treatment based on low-frequency (20 kHz) low-intensity (spatial peak temporal peak intensity <100 mW/cm2; i.e., pressure amplitude of 55 kPa) ultrasound (LFLI-US), to affect wound closure rate in human diabetic foot ulcers (DFUs) and to effect changes in the relative expression of pro-inflammatory and anti-inflammatory genes. The ratio of expression of these genes, termed the M1/M2 score because it was inspired by the transition of macrophages from pro-inflammatory (M1) to anti-inflammatory (M2) phenotypes as wound healing progresses, was previously presented as a potential healing indicator for DFUs treated with the standard of care. We previously found that non-cavitational, non-thermal LFLI-US delivered with a pulse repetition frequency of 25 Hz was effective at improving wound healing in a pilot study of 20 patients with chronic venous ulcers. In this study, we assessed the potential for weekly LFLI-US exposures to affect wound healing in patients with diabetic ulcers, and we analyzed temporal changes in the M1/M2 score in debrided diabetic wound tissue. Although this was a limited patient population of only 8 patients, wounds treated with LFLI-US exhibited a significantly faster reduction in wound size compared with sham-treated patients (p < 0.001). In addition, the value of the M1/M2 score decreased for all healing diabetic ulcers and increased for all non-healing diabetic ulcers, suggesting that the M1/M2 score could be useful as an indicator of treatment efficacy for advanced DFU treatments. Such an indicator would facilitate clinical decision making, ensuring optimal wound management and thus contributing to reduction of health care expenses. Moreover, the results presented may contribute to an understanding of the mechanisms underlying ultrasonically assisted chronic wound healing. Knowledge of these mechanisms could lead to personalized or patient-tailored treatment.