Faculty Bibliography

BACKGROUND:Hypertrophic cardiomyopathy is a genetic, life-threatening cardiovascular disease that often goes unidentified in pediatric patients. Patients are often asymptomatic and neither history or physical examination are reliable to detect the disease. The only reliable method to diagnose hypertrophic cardiomyopathy is with echocardiography to look at interventricular septal thickness. Emerging literature has shown that cardiac point-of-care ultrasound (POCUS) performed by pediatric emergency medicine (PEM) physicians is as effective and accurate compared with cardiac echocardiography performed by pediatric cardiologists. OBJECTIVE:The objective of the study was to determine the diagnostic accuracy of POCUS performed by ultrasound-trained PEM physicians in measuring the interventricular septum end diastole (IVSd) thickness in the pediatric emergency department. METHODS:We conducted a prospective, single-center, observational, diagnostic accuracy study to examine the diagnostic accuracy of POCUS in measuring IVSd thickness in pediatric patients who presented to the pediatric emergency department with symptoms that prompted a cardiac POCUS. Cardiac POCUS findings were interpreted by a PEM physician at the bedside and retrospectively by a pediatric cardiologist. Diagnostic concordance of the measurements obtained by the PEM physician and cardiologist was assessed. RESULTS:Forty-eight patients were enrolled. Median patient age was 13.4 years. There was excellent diagnostic agreement on the measurement of the IVSd thickness between PEM physicians and the pediatric cardiologist (81.25% of cases; 39/48). Disagreement was seen in 18.75% of the cases (9/48). The mean error of disagreement was -0.32, with a 95% confidence interval of -0.37 to -0.28. Overall, the mean error of both agreement and disagreement was -0.046, with 95% confidence interval of -0.08 to -0.01 and P value of 0.008. CONCLUSIONS:Point-of-care ultrasound performed by ultrasound-trained PEM physicians to measure pediatric IVSd thickness has a high diagnostic accuracy with excellent agreement with a pediatric cardiologist.

INTRODUCTION/BACKGROUND:Current guidelines for treatment for locally advanced pancreatic cancer recommend chemotherapy ± radiation, or radiation alone when multimodal therapy is contraindicated. In a subset of patients, guideline-recommended treatment (GRT) achieves sufficient response to qualify for potentially curative resection. This study evaluated trends in treatment utilization and aimed to identify barriers to GRT. METHODS:Patients with clinical T4M0 disease in the National Cancer Database from 2010 to 2017 were included. Potential predictors were assessed by relative risk regression with Poisson distribution and compared by log-link function. RESULTS:In total, 28 056 patients met the criteria. Among 17 059 (67.67%) patients treated primarily with chemotherapy, 41.19% also had radiation and 8.89% went onto resection. Many received no cancer-directed treatment or failed to receive GRT. Another 710 patients had radiation (±surgery) without chemotherapy despite few contraindications to chemotherapy. Over time, patients were more likely to undergo resection after chemotherapy (aRR = 1.58; p < 0.0001) and less likely to have chemoradiation (aRR = 0.78; p < 0.0001) or go untreated (aRR = 0.90; p < 0.0001). Socioeconomic factors (race, education, income, and insurance status) affected the likelihood of receiving chemotherapy and surgery. Median overall survival (OS) was significantly improved for patients treated with chemotherapy and particularly in those patients who went on to receive RT or undergo surgical resection. OS was also longer for patients treated at high-volume academic centers. Patients insured by Medicaid, Medicare, or those without insurance had worse OS. CONCLUSIONS:Despite improvement over time, many patients go untreated. Clinical factors were influential, but the impact of vulnerable social standing suggests persistent inequity in access to care.

OBJECTIVE/UNASSIGNED:To determine the outcomes of patients receiving hyperbaric oxygen therapy for sudden sensorineural hearing loss and the impact of patient comorbidities on outcomes. STUDY DESIGN/UNASSIGNED:Retrospective chart review. SETTING/UNASSIGNED:Tertiary referral center. METHODS/UNASSIGNED:All patients over 18 diagnosed with sudden sensorineural hearing loss between 2018 and 2021 who were treated with hyperbaric oxygen therapy were included. Demographic information, treatment regimens and duration, and audiometric and speech perception outcomes were recorded and analyzed. RESULTS/UNASSIGNED:19 patients were included. The median age was 45 years. 53% were female and 21% had pre- existing rheumatologic disorders. The mean duration between hearing loss onset and physician visits was 9.6 days. All patients received an oral steroid course, while 95% also received a median of 3 intratympanic steroid injections. Patients began hyperbaric oxygen therapy an average of 34.2 days after the hearing loss onset for an average of 13 sessions. No significant relationships were found between patient comorbidities and outcomes. Of those who reported clinical improvement, 57% demonstrated complete recovery per Siegel's criteria. There was significant improvement after hyperbaric oxygen therapy for pure tone averages (50.3dB vs. 36.0dB, p<0.01) and word discrimination scores (73% vs 79%, p<0.05) for all patients regardless of reported clinical improvement. CONCLUSION/UNASSIGNED:Hyperbaric oxygen therapy, as an adjunct to steroids, significantly improves recovery from sudden sensorineural hearing loss. The Charlson comorbidity index was not significantly associated with patient outcome, but patients with rheumatologic disorders were less likely to respond. Differentiating the natural history of the disease from hyperbaric oxygen therapy-associated improvements remains a challenge.

INTRODUCTION/UNASSIGNED:, pressures can range from 1.4 atmospheres absolute (ATA) to 3 ATA. While different treatment profiles have been proposed, there is a paucity of literature comparing the effectiveness and risk profile associated with different pressures treating the same condition. Considering the therapeutic divergence, this study aims to survey Undersea and Hyperbaric Medical Society (UHMS) members on pressure modalities and their use in different clinical conditions. METHODS/UNASSIGNED:The study was a voluntary cross-sectional survey administered online and open to healthcare providers who were Undersea and Hyperbaric Medical Society members. UHMS itself distributed the survey link. The survey period lasted from November 2022 until January 2023. Data were collected utilizing the Qualtrics platform and analyzed through Microsoft Excel. RESULTS/UNASSIGNED:A total of 265 responses were recorded. The majority responded with utilizing 2.4 ATA (35.2%) as the pressure of choice, followed by 2.0 ATA only (27.1%), and those who utilized differing therapeutic pressures (26.4%). The overwhelming choice for treatment of osteoradionecrosis (ORN) of the jaw, radiation proctitis/cystitis, diabetic foot ulcer, and chronic osteomyelitis was 2.0 ATA (68.0- 74.9%). Among listed adverse effects, myopia was the most commonly reported complication at 24.4%, followed by barotrauma (14.9%) and confinement anxiety (11.5%). CONCLUSIONS/UNASSIGNED:. As adverse effects appear non-negligible, future prospective studies must be conducted weighing the risks and benefits of higher-pressure therapies compared to safer lower-pressure options.

Broad-spectrum RAS inhibition has the potential to benefit roughly a quarter of human patients with cancer whose tumours are driven by RAS mutations^1,2. RMC-7977 is a highly selective inhibitor of the active GTP-bound forms of KRAS, HRAS and NRAS, with affinity for both mutant and wild-type variants³. More than 90% of cases of human pancreatic ductal adenocarcinoma (PDAC) are driven by activating mutations in KRAS⁴. Here we assessed the therapeutic potential of RMC-7977 in a comprehensive range of PDAC models. We observed broad and pronounced anti-tumour activity across models following direct RAS inhibition at exposures that were well-tolerated in vivo. Pharmacological analyses revealed divergent responses to RMC-7977 in tumour versus normal tissues. Treated tumours exhibited waves of apoptosis along with sustained proliferative arrest, whereas normal tissues underwent only transient decreases in proliferation, with no evidence of apoptosis. In the autochthonous KPC mouse model, RMC-7977 treatment resulted in a profound extension of survival followed by on-treatment relapse. Analysis of relapsed tumours identified Myc copy number gain as a prevalent candidate resistance mechanism, which could be overcome by combinatorial TEAD inhibition in vitro. Together, these data establish a strong preclinical rationale for the use of broad-spectrum RAS-GTP inhibition in the setting of PDAC and identify a promising candidate combination therapeutic regimen to overcome monotherapy resistance.

Negative birth experiences are common. It is yet unclear which women may be most at risk already before pregnancy. Childhood trauma and non-autonoumous/unresolved attachment state of mind may affect how women experience giving birth. This study used longitudinal data to test childhood trauma and attachment state of mind as predictors of birth experience in at-risk sample of primipara women (N = 193). The Adverse Childhood Experiences questionnaire and the Adult Attachment interview were administered during pregnancy, and women reported about their birth experience three months postpartum. Partial Least Square Structural Equation Modelling was applied to answer the research questions. Childhood physical neglect and parental substance abuse were predictive of a more negative birth experience, while attachment state of mind was not associated with how women experienced giving birth. Cross-validation suggests that these findings may be considered externally valid. Further research using validated measures on birth experience are needed.

BACKGROUND:Digital health technologies are increasingly being integrated into mental health care. However, the adoption of these technologies can be influenced by patients' digital literacy and attitudes, which may vary based on sociodemographic factors. This variability necessitates a better understanding of patient digital literacy and attitudes to prevent a digital divide, which can worsen existing health care disparities. OBJECTIVE:This study aimed to assess digital literacy and attitudes toward digital health technologies among a diverse psychiatric outpatient population. In addition, the study sought to identify clusters of patients based on their digital literacy and attitudes, and to compare sociodemographic characteristics among these clusters. METHODS:A survey was distributed to adult psychiatric patients with various diagnoses in an urban outpatient psychiatry program. The survey included a demographic questionnaire, a digital literacy questionnaire, and a digital health attitudes questionnaire. Multiple linear regression analyses were used to identify predictors of digital literacy and attitudes. Cluster analysis was performed to categorize patients based on their responses. Pairwise comparisons and one-way ANOVA were conducted to analyze differences between clusters. RESULTS:A total of 256 patients were included in the analysis. The mean age of participants was 32 (SD 12.6, range 16-70) years. The sample was racially and ethnically diverse: White (100/256, 38.9%), Black (39/256, 15.2%), Latinx (44/256, 17.2%), Asian (59/256, 23%), and other races and ethnicities (15/256, 5.7%). Digital literacy was high for technologies such as smartphones, videoconferencing, and social media (items with >75%, 193/256 of participants reporting at least some use) but lower for health apps, mental health apps, wearables, and virtual reality (items with <42%, 108/256 reporting at least some use). Attitudes toward using technology in clinical care were generally positive (9 out of 10 items received >75% positive score), particularly for communication with providers and health data sharing. Older age (P<.001) and lower educational attainment (P<.001) negatively predicted digital literacy scores, but no demographic variables predicted attitude scores. Cluster analysis identified 3 patient groups. Relative to the other clusters, cluster 1 (n=30) had lower digital literacy and intermediate acceptance of digital technology. Cluster 2 (n=50) had higher literacy and lower acceptance. Cluster 3 (n=176) displayed both higher literacy and acceptance. Significant between-cluster differences were observed in mean age and education level between clusters (P<.001), with cluster 1 participants being older and having lower levels of formal education. CONCLUSIONS:High digital literacy and acceptance of digital technologies were observed among our patients, indicating a generally positive outlook for digital health clinics. Our results also found that patients of older age and lower formal levels of educational attainment had lower digital literacy, highlighting the need for targeted interventions to support those who may struggle with adopting digital health tools.