Faculty Bibliography

RATIONALE: Derived neutrophil-to-lymphocyte ratio (dNLR) of peripheral blood, a marker of host inflammation and cytokine activation, may be a surrogate for more aggressive disease. It is a biomarker that has been associated with survival and response to immunotherapy in non-small cell lung cancer (NSCLC), although an optimal threshold value has not been established. We had previously found in a NSCLC cohort that a dNLR cutoff of 2 was an optimal cutoff to predict survival at 6 months in patients with NSCLC; median survival was significantly shorter in patients with a >=2 dNLR (7.0 months) versus those with a <2 dNLR (64.5 months; p = 0.004). Here we present an interim analysis aiming to validate the use of this biomarker in a second cohort.
METHOD(S): A veteran cohort (n=42) from the VA New York Harbor Healthcare System, who underwent diagnostic bronchoscopy and found to have NSCLC, was used as a validation cohort. Peripheral blood was obtained pre-treatment and at or near the time of diagnosis. The dNLR was calculated as ANC/(W

In lung cancer, enrichment of the lower airway microbiota with oral commensals commonly occurs and ex vivo models support that some of these bacteria can trigger host transcriptomic signatures associated with carcinogenesis. Here, we show that this lower airway dysbiotic signature was more prevalent in group IIIB-IV TNM stage lung cancer and is associated with poor prognosis, as shown by decreased survival among subjects with early stage disease (I-IIIA) and worse tumor progression as measured by RECIST scores among subjects with IIIB-IV stage disease. In addition, this lower airway microbiota signature was associated with upregulation of IL-17, PI3K, MAPK and ERK pathways in airway transcriptome, and we identified Veillonella parvula as the most abundant taxon driving this association. In a KP lung cancer model, lower airway dysbiosis with V. parvula led to decreased survival, increased tumor burden, IL-17 inflammatory phenotype and activation of checkpoint inhibitor markers.

BACKGROUND:Point-of-care ultrasound (POCUS) is becoming widely adopted with increasing accessibility of courses. Little is known about the optimal design of the introductory course or longitudinal training programs targeting hospitalists that are critical to success. METHODS:Hospitalists at four academic sites participated in a two-day introductory course and a longitudinal phase comprising clinical POCUS practice, clip uploading with online feedback, hands-on teaching, and monthly ultrasound conferences. Assessments were performed immediately before and after the two-day course and after 1 year. RESULTS:Knowledge increased from baseline to post two-day course (median score 58 and 85%, respectively, p < 0.001) and decreased slightly at 1 year (median score 81%, p = 0.012). After the two-day introductory course, the median score for hands-on image acquisition skills, the principal metric of participant success, was 75%. After 1 year, scores were similar (median score 74%). Confidence increased from baseline to post two-day course (1.5 to 3.1 on a 4 point Likert scale from Not at all confident (1) to Very confident (4), p < 0.001), and remained unchanged after 1 year (2.73). Course elements correlating with a passing score on the final hands-on test included number of clip uploads (r = 0.85, p,0.001), attendance at hands-on sessions (r = 0.7, p = 0.001), and attendance at monthly conferences (r = 0.50, p = 0.03). CONCLUSIONS:The I-ScaN POCUS training program increased hospitalist knowledge, skill and confidence with maintained skill and confidence after 1 year. Uploading clips and attending hands-on teaching sessions were most correlative with participant success.

LEARNING OBJECTIVES 1: Describe a longitudinal curriculum to train internal medicine (IM) residents in point-of-care ultrasound (POCUS). LEARNING OBJECTIVES 2: Recognize the impact of decreased patient contact on residents' retention of POCUS skills. SETTINGAND PARTICIPANTS:Despite thewell-documented benefits of POCUS, internal medicine residents receive little formal training. We implemented a curriculumin the 2019 academic year to train 55 PGY-2 IMresidents in POCUS across four urban teaching hospitals and a method to evaluate its efficacy. As the COVID pandemic hit, we additionally sought to understand the impact of COVID on the efficacy of our curriculum and to ascertain from IM residents their barriers to using POCUS during the COVID pandemic. DESCRIPTION: The curriculum was composed of three workshops, consisting of lectures and hands-on practice covering lung, cardiac, abdominal, and lower extremity vascular views. Following the workshops, we sought to consolidate learners' knowledge with a subsequent year-long skill building phase. The skill-building phase was truncated due to the pandemic.A hands-on assessment was performed prior to the course and not repeated at course conclusion due to social distancing concerns. An online knowledge test was administered before the course, immediately following the course, and at one year. A survey assessing attitudes and barriers to POCUS was administered before the course and at one year. EVALUATION: No resident passed the pre-course hands-on assessment. Prior to the course, the average resident score was 54% on the online knowledge quiz; directly after the workshop series, the average rose to 78%. At one year, the average score on the online knowledge quiz was 74%, a statistically significant decrease (p=0.04). Ninety-one percent of residents reported performing POCUS at least once/month prior to the pandemic. During the pandemic, scanning activity decreased; 67% residents reported they scanned rarely or never. DISCUSSION/ REFLECTION / LESSONS LEARNED: Our course led to significant improvement of knowledge regarding ultrasound technology and image interpretation, however this decayed at one year, likely due to lack of skill reinforcement. Though POCUS was widely used prior to the pandemic, usage dropped at the pandemic's peak, despite its utility as both a diagnostic and therapeutic tool. The most commonly cited reason for lack of use was concern regarding contamination and infectious exposure. While the COVID pandemic disrupted our curriculum, it also highlighted opportunities to incorporate POCUS into clinical practice and reinforced the importance of continued longitudinal practice to retain learned skills

Aggressive fluid resuscitation has become standard of care for hypotensive patients with sepsis. However, sepsis is a syndrome that occurs in patients with diverse underlying physiology and a one-size-fits-all approach to fluid administration seems misguided. To individualize fluid management, several methods to assess fluid responsiveness have been validated, but even in fluid responsive patients, fluid administration may still be harmful and lead to pulmonary edema. Hence, to individualize fluid management, in addition to fluid responsiveness, fluid tolerance needs to be assessed. This article examines whether lung ultrasound can be useful to detect excess extravascular lung water (EVLW) and thus assess fluid tolerance. The physiology of EVLW and the principles of lung ultrasound are briefly described. Articles examining the correlation between EVLW and lung ultrasound findings in various clinical settings are carefully reviewed. Overall, lung ultrasound has been found to be an excellent tool to detect EVLW, but large outcome studies investigating lung ultrasound-guided fluid management are still lacking.

Needs and Objectives: Point-of-care ultrasound (POCUS), when integrated with a physical examination, increases accuracy of diagnosis and decreases procedural complications. However, most hospitalists have not been trained to use this new technology. We developed a year-long curriculum, the Integrated Sonographic Competency at NYU (I-ScaN), to train hospitalists in POCUS. Setting and Participants: Twenty-three hospitalists from across the 4 hospitals affiliated with NYU Langone Health participated. Sixteen of the participants (72%) reported prior ultrasound training, with a range of 2-80 hours (median = 4 hours); 3 reported more than 5 hours of prior training. Three reported active clinical use of POCUS though none of them had more than 5 hours of prior training. The group averaged 4.5 years of clinical practice (range = 1-13 years). Description: The program began with an intensive 2-day course consisting of lectures and hands-on training on human models covering views of the heart, lungs/pleura, abdomen, and leg vasculature. We developed the remainder of the year-long program with the goal of helping participants retain and improve upon the skills acquired during the initial course. Our program included hands-on teaching sessions held at each institution by local experts, presentations at monthly conferences with the course director (HS), and online feedback on uploaded ultrasound images. To facilitate this final item, each participant was given access to portable ultrasound devices with the ability to upload ultrasound clips to a HIPAA-compliant website. Participants provided a clinical interpretation and assessment of image quality for each of their clips. The clips were then reviewed by an expert who provided feedback on both of these domains. Participants could then use these clips to create personal portfolios in accordance with national standards set by the Society of Hospital Medicine. Evaluation: Participants rated the 2-day intensive program as very useful and satisfaction with the individual components of the program ranged from useful to very useful. Participants reported statistically significant increases in their confidence in acquiring images, interpreting images, and performing a clinical evaluation using POCUS for all domains except in performing paracentesis. Knowledge scores increased from a baseline of 58% to 83%; p< 0.001. At 6 months into the program, 2 hospitalists had uploaded > 400 clips each and 7 had uploaded fewer than 20 clips each. Discussion/Reflection/Lessons Learned: I-ScaN is a highly rated and effective program to train hospitalists in core POCUS competencies. The 2-day intensive program significantly improves confidence and knowledge. Monitoring of progress and scanning activity was difficult because few hospitalists uploaded clips regularly. Our focus now is on identifying barriers to using POCUS for new trainees. Future analysis will include frequency of scanning, retention of knowledge and skill, and generation of learning curves for each view