A unique redox-triggered crosslinking reaction is disclosed that capitalizes on the orthogonal reactivity of an iron-based catalyst for the ring opening polymerization of cyclic diesters and epoxides.

Introduction Evidence supports an ultrasound-guided approach in patients with difficult vascular access. Prior research on teaching ultrasound-guided intravenous access has included only small groups of first- and second-year medical students. Methods We enrolled fourth-year medical students in our teaching module. The module featured a 6-minute prelearning narrated lecture and 5-minute orientation, followed by ultrasound-guided IV placement on homemade gel models. Facilitators were emergency medicine (EM) residents with a prespecified level of procedural ultrasound skills according to EM milestones. Students completed pre- and postmodule surveys. Facilitators completed the Directly Observed Procedural Skills Evaluation. Primary outcomes included global rating, proficiency on six procedural skills, and perceived learning. Results Our module was completed by 150 fourth-year medical students (94% of the class); 84% cannulated the vein in one attempt. We used a global rating scale to describe the students' cannulation abilities; 59% were trusted to perform this procedure with direct supervision and coaching, 29% with indirect supervision, and 8% without supervision. There was no association between a student's order of attempting IV access within the group and global rating ( p = .41). Students reported increased understanding of indications, antecubital anatomy, sonographic anatomy, and procedural comfort (12%, 29%, 38%, and 65% improvement pre- vs. postmodule, respectively; p < .001). Discussion Our module enabled more than one-third of fourth-year medical students to achieve an indirect supervision or better level of proficiency in ultrasound-guided IV access, with significant improvements in perceived knowledge. This module may be useful for other educators facilitating the transition to residency.

Background Newark is the epicenter of the HIV epidemic in New Jersey. University Hospital, the state’s only public safety net hospital, plays a critical role in identifying and linking newly diagnosed persons with HIV (PWH) to care. We previously showed that the emergency department (ED) is the most common setting for missed testing opportunities. Therefore, in 2015 we implemented a routine opt-out HIV screening and patient navigator (PN)-assisted linkage to care (LTC) protocol in the ED, and this project examined the LTC rates for newly diagnosed PWH. Methods We conducted an IRB-approved retrospective chart review of patients who tested positive for HIV in the ED between 2015 and 2018. Descriptive statistics were used to summarize demographic and clinical data. Univariate and multivariate regression were used to identify demographic and clinical factors associated with LTC for newly diagnosed PWH. Age, sex, and factors with p ≤ 0.10 in the univariate analysis were included in the final model. Results Of the 464 patients who screened positive, 123 (26.5%) were new diagnoses. The mean age was 41.0 years (SD = 13.8); 82 (67%) male; 74 (60%) black, 26 (21%) Hispanic, 7 (6%) white. The median CD4 count was 242 (IQR = 120 - 478) cells/µL, and 10 patients (8.1%) had acute HIV infection. Six patients (4.9%) died before LTC. Among the remaining 117 patients, PN outreach resulted in scheduled appointments at the Infectious Disease Practice for 102 (87.2%). In total, 79 (67.5%) were linked to care and 38 (32.5%) were referred to the state for linkage. Of the patients linked to care, 49 (62.0%) attended their first appointment and 30 (38.0%) required additional PN outreach. Men who have sex with men (MSM) (OR = 17.2, p = 0.002) and heterosexual contact (OR = 6.3, p &lt; 0.001) were predictive of LTC. Conclusion Our protocol resulted in LTC for the majority of newly diagnosed PWH. Among those linked to care, over a third required additional PN outreach after missing their first appointment, highlighting the importance of PN follow-up. MSM and heterosexual contact, the two highest risk factors for HIV in New Jersey, were predictive of LTC. Their successful LTC may be explained, in part, by the fact that PNs were demographically similar and lessened perceived stigma associated with entry into care. Disclosures All Authors: No reported disclosures

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