Faculty Bibliography

Background: In an effort to bolster medical student wellbeing and mitigate burnout, NYU School of Medicine (NYUSOM) launched a longitudinal resiliency curriculum, coupled with a wellbeing self-assessment tool. We aim to study its impact on the development of knowledge, self-awareness, and practices related to wellbeing and resiliency. Methods: MD AWARE (Medical Students Developing Awareness, Wellbeing, and Resilience) was launched in August 2017 for the incoming NYUSOM class. It involves six interactive sessions implemented at critical junctions over the first three years of medical school. Each session includes a short lecture, followed by a small group activity led by trained facilitators. At the start of each small group session, students are asked to complete an anonymous online survey (results only provided to student). The self-assessment includes 19 items adapted from three validated assessment tools measuring different aspects of wellbeing and burnout. Students immediately receive three scores with explanations of each and the opportunity to debrief in their small group. Thus far, the students have participated in the first two sessions. In the first, students were introduced to research on physician burnout, the protective effects of resilience, and practiced a gratitude exercise. In the second, students were introduced to mindful awareness to identifying cognitive distortions and practiced reframing negative inner dialogue. After each, students completed a retrospective pre/post survey, using a 4-point likert scale, assessing knowledge, self-awareness, and comfort/confidence in activities to promote wellbeing. Comparison between the survey results were calculated using pair t-test. Results: Survey results were available for 106/118 (90%) students participating in the first session and 55/114 (48%) participating in the second. Results of both pre/post surveys showed significant improvement (p=<.01) on every item. Notably, after the first session, students reported a substantial increase in their comfort acknowledging stressors (31.1% very comfortable pre-vs 61.1% post-) and seeking help when in need (18.1% very comfortable pre-vs 45.2% post-). After the second session, students reported increased comfort practicing mindful awareness (65.5% comfortable/very comfortable pre-vs 90.9% post-), increased confidence both identifying cognitive distortions (59.2% comfortable/very comfortable pre-vs 96.3% post-) and reframing negative responses (47.2% comfortable/very comfortable pre-vs 81.8% post-). Conclusions: While many schools have looked at ways to foster wellbeing in their medical students, our curriculum is unique in its longitudinal nature and use of repeated wellbeing self-assessments. Preliminary assessment demonstrates a positive impact on medical students' knowledge, self-awareness, and practices around wellbeing and resilience. Thus, our novel curriculum is a promising way to bolster resiliency skills and mitigate burnout in this vulnerable population

Learning Objective #1: Recognize the incidence of posterior circulation stroke after cardiac catheterization Learning Objective #2: Recognize how cognitive biases affect clinical decision making CASE: A 57 year old man with hypertension, type 2 diabetes, depression, coronary artery disease s/p PCI and 4-vessel CABG presented with nausea, vomiting, and syncope. He was found to be in complete heart block and underwent emergent pacemaker placement and cardiac catheterization with stent placement to the left circumflex artery. After catheterization, patient reported lightheadedness and cloudiness when walking. He was transferred to the medicine service with sign-out to follow up with physical therapy given "deconditioning" after his acute illness. PT sessions were limited by his hesitancy to walk beyond a few steps. Four days after downgrade, patient reported left sided visual changes. Physical exam was notable for left homon-ymous hemianopia without somatosensory deficits. A non-contrast head CT revealed a new acute to sub-acute right posterior cerebral artery infarction. He was determined to have had an embolic ischemic stroke secondary to cardiac catheterization. His lightheadedness and cloudiness were believed to be secondary to hemianopia. He was medically managed and discharged to SAR. IMPACT: This case involves a common post-catheterization complication as an unusual presentation described as lightheadedness and cloudiness. We attributed the symptoms to overall deconditioning secondary to diagnostic momentum. Furthermore, visual fields were not accurately assessed in this post-procedure patient. Our personal practice now includes exam maneuvers to evaluate posterior circulation on patients post-cardiac catheterization given the high incidence of these strokes in cardiac patients. DISCUSSION: Post-cardiac catheterization strokes are common, with most occurring within 24 hours of the procedure. Of these, approximately 25% involve the posterior circulation often leading to visual field deficits without gross somatosensory deficits. As a result, neurological deficits may often go unnoticed if visual fields are not accurately assessed. Furthermore, patients may not realize a true visual field deficit as they can compensate with neck rotation; initial descriptors may be vague such as lightheadedness or cloudiness. Our case was further complicated by cognitive biases that influenced our decision making; namely, the case was framed as overall deconditioning. As a result, we anchored to a single diagnosis and did not consider neurological deficit as an explanation for our patient's symptoms. We encourage all medical professionals to be cognizant of variability in presentation of visual field deficits and also be keen to their own cognitive biases

Learning Objective #1: Discuss typical, atypical clinical & laboratory presentations of acute mononucleosis Learning Objective #2: Review indications for treatment beyond supportive care CASE: A 33 year-old female with 1 prior spontaneous abortion presented with facial swelling, arthralgias and fevers to 102F for 2 weeks. The patient reported environmental exposures as a native of Australia such as outbreaks of Ross River Fever, encounters with flying foxes, a layover in Hong Kong, and a child with a febrile illness. She sought outpatient care and initial bloods revealed WBC 2.52K/uL, platelets 105K/uL and AST/ALT 88/70 ALP 117 U/L. She was prescribed antibiotics without effect. A week later, she developed pleuritic chest pain, was found to have a small pericardial effusion on outpatient echocardiogram and referred to the Emergency Department. Triage vitals were normal. Her exam was notable for periorbital edema, cervical lymphadenopathy and pain in bilateral wrists without effusion. Labs showed recovering blood counts (WBC 9.3K/uL Hgb 13.1g/dL Plt 157 K/uL), unremarkable UA, microalbumin/creatinine ratio and CK, but worsening LFTs with AST 505 ALT 578 ALP 788 U/L. She was admitted for further work-up with rheumatology and infectious disease input. While hospitalized, the patient developed new night sweats and a sore throat. Repeat echocar-diogram revealed a trace pericardial effusion and abdominal ultrasound was normal. C3/C4 levels, beta-2 glycoprotein, cardiolipin, Ro/La, lupus anticoagulant, histone, centromere, and mitochondrial antibodies all returned negative, as did respiratory viral panel, HIV, hepatitis serologies, thick and thin smears, Lyme, Anaplasma and Babesia serologies, Ross River fever, Dengue and Chikungunya. ANA titer and dsDNA Ab were < 1:40 and 9 respectively, but EBV viral capsid IgM returned positive consistent with acute mononucleosis. IMPACT: The triad of acute EBV is well known, but atypical presentations provide diagnostic challenges and warrant further evaluation DISCUSSION: The triad of acute Epstein-Barr viral infection involves high fevers, lymphadenopathy, and pharyngitis, all present in our patient. However, she also exhibited less typical disease features. Her periorbital edema, known as "Hoagland's sign," is caused by viral replication obstructing lymphatic drainage of the nasopharynx. Similarly, infected tonsillar B-cells instigate secretion of polyclonal antibodies (including heterophile and non-specific autoantibodies). This process is normally accompanied by leukocytosis with atypical lymphocytes, but our case presented initially with leukopenia. Further, her degree of transaminitis (levels > 10x) normal is usually restricted to the immunocompromised. Finally, EBV may also cause transient myo-or pericarditis as noted in select case reports. The mainstay of treatment is supportive, although steroids and acyclovir are used in cases of laryngeal edema, liver failure, or hemolytic anemia and thrombocytopenia. These agents have not been proven to reduce the length or severity of illness

L-selectin, a lectin-like receptor on all leukocyte classes, functions in adhesive and signaling roles in the recruitment of myeloid cells from the blood to sites of inflammation. Here, we consider L-selectin as a determinant of neurological recovery in a murine model of spinal cord injury (SCI). Spinal cord-injured, L-selectin knock-out (KO) mice (male) showed improved long-term recovery with greater white matter sparing relative to wild-type (WT) mice and reduced oxidative stress in the injured cord at 72 h post-SCI. There was a partial and transient reduction in accumulation of neutrophils in the injured spinal cords of KOs at 24 h post-injury. To complement these findings with KO mice, we sought a pharmacologic means for lowering L-selectin levels. We found that diclofenac, a nonsteroidal anti-inflammatory drug (NSAID), induced the shedding of L-selectin from the cell surface of myeloid subsets, specifically neutrophils and non-classical monocytes, in the blood and the injured spinal cord. Diclofenac administration to injured WT mice enhanced neurological recovery to a level comparable to that of KOs but did not improve recovery in KOs. While diclofenac treatment had no effect on myeloid cell accumulation, there was a reduction in oxidative stress at 72 h post-SCI. These findings implicate L-selectin in secondary pathogenesis beyond a role in leukocyte recruitment and raise the possibility of repurposing diclofenac for the treatment of SCI.

Neurotrophins play critical roles in the survival, maintenance and death of neurons. In particular, proneurotrophins have been shown to mediate cell death following brain injury induced by status epilepticus (SE) in rats. Previous studies have shown that pilocarpine-induced seizures lead to increased levels of proNGF, which binds to the p75NTR-sortilin receptor complex to elicit apoptosis. A screen to identify compounds that block proNGF binding and uptake into cells expressing p75 and sortilin identified lithium citrate as a potential inhibitor of proNGF and p75NTR-mediated cell death. In this study, we demonstrate that low, submicromolar doses of lithium citrate effectively inhibited proNGF-induced cell death in cultured neurons and protected hippocampal neurons following pilocarpine-induced SE in vivo. We analyzed specific mechanisms by which lithium citrate afforded neuroprotection and determined that lithium citrate prevented the association and internalization of the p75NTR-sortilin receptor complex. Our results demonstrate a novel mechanism by which low-dose treatments of lithium citrate are effective in attenuating p75NTR-mediated cell death in vitro and in vivo.