Faculty Bibliography

INTRODUCTION/BACKGROUND:Patients with a suspected high-consequence infectious disease (HCID), such as Ebola virus disease, may require routine laboratory testing to guide management. We assessed the capabilities of frontline hospitals and the barriers they face performing laboratory testing for patients with a suspected HCID. METHODS:A one-time confidential REDCap survey querying capabilities to safely perform laboratory tests that the Centers for Disease Control and Prevention considers critical for patients with a suspected HCID was sent to 95 institutions in Baltimore, MD, Boston, MA, New York City, NY, and Washington, DC, from January to May 2025. RESULTS:Fifty (53%) institutions responded, mostly teaching hospitals (96%), with 24% reporting prior experience evaluating a patient with suspected Ebola virus disease. While many hospitals could perform on-site blood gas (70%), hemoglobin/hematocrit (68%), and lactate (68%) tests on a suspected HCID patient, fewer could safely perform a chemistry panel (64%), a urinalysis (60%), a complete blood count with differential (56%), and a malaria rapid diagnostic test (RDT) (48%) on a suspected HCID patient. The five tests respondents most often considered extremely or very important were hemoglobin/hematocrit (91%), chemistry panel (90%), CBC with differential and platelet count (89%), malaria RDT (88%), and blood gas (88%). Reported barriers to performing routine laboratory testing included issues related to patient and staff safety, infection control, lack of appropriate space, and funding. CONCLUSIONS:Our survey identified several barriers to implementing safe laboratory testing. The inability to conduct these laboratory tests may result in delays in care when an HCID is suspected.

The National Special Pathogens System (NSPS) stratifies U.S. healthcare facilities by their readiness level to care for patients with high-consequence infectious diseases (HCIDs). While NSPS Level 1 and 2 facilities possess advanced biocontainment capabilities to care for patients for the duration of their illness, most U.S. hospitals fall under a NSPS Level 3 or 4 designation, with limited resources to manage patients with a suspected or confirmed HCID. However, emerging zoonotic threats like H5N1 underscore the need to bolster HCID preparedness across all NSPS Levels. Beginning in March 2024, the U.S. H5N1 outbreak has primarily impacted wild bird flocks, poultry, and cattle, along with some human infections. The continuation of this outbreak in wild and domesticated animals increases the likelihood of further human spillover and eventual viral evolution in human hosts. At the frontlines, rural farming communities are likely to be most affected, with potential outbreaks exacerbated by a lack of accessible NSPS Level 1, 2, or 3 facilities in these regions. Thus, strengthening the HCID preparedness of local NSPS Level 4 facilities is critical to preventing transmission, minimizing societal disruption, protecting communities and the healthcare workforce, along with ensuring an equitable, coordinated response to future emerging infectious disease threats. This manuscript explores the financial, societal and health system impacts of HCID outbreaks to delineate the necessity of strengthening the preparedness of NSPS Level 4 facilities.

We investigated the proportion of mpox hospitalizations for medical indications versus infection control isolation at New York University Langone Health and NYC Health + Hospitals from May 1, 2022, through April 28, 2023. We reviewed the electronic medical records of people with a positive mpox nucleic acid amplification test independently. We collected demographic and clinical data on those who met our inclusion criteria, and we stratified patients by medical indication or infection control isolation based on their reason for hospitalization. This observational cohort study included 66 patients admitted for mpox, of whom 8 (12.1%) were admitted primarily for infection control isolation and 58 (87.9%) were admitted primarily for medical indications. Those hospitalized primarily for isolation (vs medical indications) were significantly less likely to have a private residence (25.0% vs 79.3%; P < .001). Those hospitalized for medical indications (vs isolation) were significantly more likely to be HIV positive (63.8% vs 12.5%; P = .006), to have secondary bacterial infections (65.5% vs 25.0%; P = .03), and to receive antibiotics (81.0% vs 25.0%; P < .001). We found no significant differences in the median cumulative length of stay per patient or the proportion of tecovirimat receipt between the 2 groups. While the small size of the isolation cohort was a limitation of this analysis, our findings argue for increased capacity for community-based isolation, which may reduce the use of hospital admissions primarily for infection control isolation in future outbreaks.

BACKGROUND:This study evaluates the prognostic utility of the RV/LV diameter ratio in predicting low cardiac index (CI) in patients with acute intermediate-risk PE. METHODS:We conducted a retrospective analysis of 112 patients with acute PE who underwent catheter-based therapies. The RV/LV diameter ratio was measured from standard axial views on computed tomography pulmonary angiogram (CTPA). Multivariable regression models were used to assess the relationship between the RV/LV diameter ratio and invasive hemodynamic parameters. RESULTS:lower cardiac index (p = 0.002). The RV/LV ratio demonstrated moderate sensitivity (64.5 %) and high specificity (84.2 %) for predicting low cardiac index. CONCLUSION/CONCLUSIONS:The RV/LV diameter ratio offers real-time risk stratification and is a predictor of low cardiac index in patients with acute PE.

BACKGROUND/UNASSIGNED:Among patients with intermediate-risk pulmonary embolism undergoing mechanical thrombectomy, the mean change in cardiac index (CI) is modest. We sought to identify variables associated with a hemodynamic super-response or a CI increase of ≥25% postthrombectomy. METHODS/UNASSIGNED:This was a single-center retrospective study including patients with intermediate-risk pulmonary embolism undergoing mechanical thrombectomy with pulmonary artery catheter-derived hemodynamic indices obtained preprocedure and postprocedure. RESULTS/UNASSIGNED:was associated with a hemodynamic super-response (odds ratio, 3.76 [95% CI, 1.09-13.0]). CONCLUSIONS/UNASSIGNED:Patients with intermediate-risk pulmonary embolism with the more severe hemodynamic derangements had the greatest improvement in CI post thrombectomy. This group can be identified with commonly available noninvasive indices of right ventricular dysfunction.

NYC Health + Hospitals/Bellevue Hospital (Bellevue) conducts quarterly drills to test the readiness and preparedness of its special pathogen program. As a Regional Emerging Special Pathogen Treatment Center, Bellevue maintains a state of readiness to respond to patients infected with highly infectious pathogens. On March 29, 2024, Bellevue conducted a no-notice drill to simulate the arrival of a pediatric patient suspected of a viral hemorrhagic fever (VHF). Notification of the special pathogens unit (SPU) activation for a suspected VHF patient was communicated to Bellevue supervisors and leadership. Once responders arrived at their respective reporting stations, they were informed that this was a drill and instructed to read through their role-specific Roles & Responsibilities sheet. All respondents reported to assume their role in the SPU activation within the expected time frame. The cost savings of running this drill, as opposed to a full unit activation, was estimated to be nearly USD 2,000. Following the exercise, participants were offered to complete an anonymous survey assessing their perceptions of the drill and readiness for SPU activation. Key findings were that while most staff felt adequately prepared and understood their roles and responsibilities, suggestions for improvement included more frequent training sessions. This study underscores the importance of regular preparedness exercises to maintain SPU readiness. Insights gained from this drill can inform future training models, enhance the effectiveness of communication strategies during real-world activations, and can be replicated to improve the special pathogen preparedness of healthcare institutions across the United States, regardless of resource availability.

New York City has been the epicenter of multiple recent infectious disease outbreaks, including COVID-19 and mpox, due to its position as one of the largest international travel hubs in the United States. In response to the imperative need to transport patients to specialized biocontainment units during high-consequence infectious disease outbreaks, the Health and Human Services Region 2 Regional Emerging Special Pathogen Treatment Center at New York City Health + Hospitals/Bellevue and the NYC Department of Health and Mental Hygiene spearheaded a comprehensive patient transport system. Informed by real-world experiences, quarterly drills, and regional partner engagement, the updated Region 2 patient transport concept of operations (CONOPS) ensures safe and seamless patient transfers. This article elucidates key components of the patient transport CONOPS, the multifaceted partner engagement approach used to develop it, and the collaborative workshop that fine-tuned the plan. Organizational skills, partner engagement, and adaptability were all necessary for refining and operationalizing a robust patient transport CONOPS. The finalization of this plan speaks to the collaborative spirit and commitment of regional leaders to ensure the effective management of high-consequence infectious disease outbreaks and the safeguarding of public health within Region 2 and beyond.

BACKGROUND:Patients with intermediate-risk pulmonary embolism (PE) have outcomes worse than uncomplicated ST elevation myocardial infarction. Yet, no large-scale study has compared the outcomes of large-bore mechanical thrombectomy (LBMT) with anticoagulation alone (AC). The aim of this study was to compare the clinical outcomes among patients receiving LBMT vs AC alone. METHODS:This was a two-center retrospective study that included patients with intermediate-risk PE from October 2016 - October 2023 from the institution's Pulmonary Embolism Response Team (PERT) database. The primary outcome was a composite of 30-day mortality, resuscitated cardiac arrest or hemodynamic decompensation. Inverse probability of treatment weighting (IPTW) was used to balance covariates; Kaplan Meir curves and IPTW multivariable Cox regression were used to assess the relationship between treatment groups and outcomes. RESULTS:Of the 273 patients included in the analysis, 192 (70 %) patients received AC alone and 81 (30 %) patients received LBMT and AC. A total of 30 (10.9 %) patients experienced the primary composite outcome over a median follow-up of 30 days. The primary composite outcome was significantly lower in the group that received LBMT compared to those on AC alone (1.2 % vs 15.1 %, log-rank p < 0.001; adjusted HR: 0.02; 95 % CI: 0.002-0.17, p < 0.001) driven by a lower rate of 30-day all-cause mortality (0 % vs 7.3 %, log-rank p = 0.01), resuscitated cardiac arrest (0 % vs 6.8 %, log-rank p = 0.016) and new or worsening hemodynamic instability (4 % vs 11.1 %, log-rank p = 0.007). CONCLUSION/CONCLUSIONS:In this largest cohort to date comparing LBMT versus AC alone in acute intermediate-risk PE, LBMT had a significantly lower rate of the primary composite outcome including a lower rate of all-cause mortality when compared to AC alone. Ongoing randomized trials will test these associations.

Acute respiratory distress syndrome (ARDS) is a heterogeneous group of disease entities that are associated with acute hypoxic respiratory failure and significant morbidity and mortality. With a better understanding and phenotyping of lung injury, novel pathophysiologic mechanisms demonstrate the impact of a patient's excessive spontaneous breathing effort on perpetuating lung injury. Patient self-inflicted lung injury (P-SILI) is a recently identified phenomenon that delves into the impact of spontaneous breathing on respiratory mechanics in patients with lung injury. While the studies are hypothesis-generating and have been demonstrated in animal and human studies, further clinical trials are needed to identify its impact on ARDS management. The purpose of this review article is to highlight the physiologic mechanisms of P-SILI, novel tools and methods to detect P-SILI, and to review the current literature on non-invasive and invasive respiratory management in patients with ARDS.