Abstract 4148010: Evaluation of Echocardiography and Biomarkers for Prognostication of RV Failure in COVID-19 Patients Undergoing Extracorporeal Membrane Oxygenation (ECMO)

Circulation, Volume 150, Issue Suppl_1, Page A4148010-A4148010, November 12, 2024. Background:Severe COVID-19 infection has been associated with acute respiratory distress syndrome (ARDS) and right ventricular (RV) dysfunction. In this study, we report associations between echocardiographic findings and laboratory markers that portend RV failure in patients with ARDS secondary to COVID-19 infection on ECMO.Methods:A single-center study was conducted in the cardiovascular ICU of our institute. A retrospective chart review was performed on 41 patients with COVID-19 on ECMO between March and October 2020. Twenty-two patients had transthoracic echocardiograms (TTE) completed while on ECMO (VV-ECMO = 19, VA-ECMO = 3). Echocardiograms (echo) were obtained pre-cannulation, during ECMO, and post-ECMO decannulation. RV parameters analyzed included tricuspid annular plane systolic excursion (TAPSE), basal diastolic RV diameter, right ventricular fractional area of change (RV FAC), and S’. Laboratory values including BNP, CRP, D-dimer, ferritin, fibrinogen, lactate and troponin were analyzed for correlation with echo findings.Results:TAPSE was significantly lower in deceased patients (1.9± 0.4cm vs 1.3±0.6 cm, P< 0.05). RV FAC and S’ were also lower in the deceased group. TAPSE while on ECMO showed a positive association with peak D-dimer levels in survivors and a negative association in deceased patients. Peri-ECMO fibrinogen and CRP levels were negatively associated with TAPSE in survivors while fibrinogen showed positive association in deceased patients. LDH peak, fibrinogen initial and lactate peak were higher in the deceased[ZQ1] group. There is a trend of increased RV basal diameter in the deceased group (3.9±0.9 vs 4.2±0.9 cm). Last troponin levels were negatively associated with basal diastolic RV diameter while on ECMO in deceased patients.Conclusion:Preservation of RV longitudinal contractility, as reflected by TAPSE, may play an important role in the survival of COVID-19 patients on ECMO. Laboratory markers such as LDH, D-dimer, fibrinogen and lactate may have prognostic value in predicting RV failure. Further studies are required to determine if early initiation of therapies to improve RV systolic function in COVID-19 ECMO patients with ARDS improves outcomes.

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Novembre 2024

Abstract 4146592: Device-Recorded Physical Activity and Atrial Fibrillation Burden: A Natural History Experiment from the COVID-19 Pandemic in the TRIM-AF Clinical Trial

Circulation, Volume 150, Issue Suppl_1, Page A4146592-A4146592, November 12, 2024. Introduction:Low physical activity (PA) has been identified as a risk factor for development of atrial fibrillation (AF). However, the effect of changes in PA on directly recorded AF burden has not been well studied. The COVID-19 pandemic offered an opportunity to observe whether changes in activity were correlated with changes in AF burden. To determine if reduced PA is associated with higher AF burden, we assessed daily PA and AF burden data from patients with cardiac implantable electronic devices (CIEDs) enrolled in a prospective clinical trial, Targeting Risk Interventions and Metformin for Atrial Fibrillation (TRIM-AF, NCT03603912).Methods:Daily AF burden and activity were determined from implantable cardiac devices with atrial leads. The pandemic lockdown period was analyzed for up to 1 year. Pre-pandemic periods were matched by month to pandemic periods. To test the potential confounding of aging, pre-pre-pandemic periods were matched by month to pre-pandemic periods. To reduce the confounding of study interventions, matched periods were taken on one side of the study enrollment date. For PA and AF burden, Gaussian linear mixed models and a Bayesian mixed effect model were fitted and adjusted for age, sex, and device manufacturers. A Gaussian model was used to correlate daily activity minutes and AF%. Time splines were added to adjust for non-linear time effects. Outcomes are reported as mean activity minutes and daily AF%.Results:Comparing Pandemic vs. Pre-periods (N=82 periods; 55 male, 27 female), daily activity minutes decreased by a mean of 13.16±1.06 minutes/day, and daily AF burden increased by 16% [5%-26%]. Comparing Pre vs. Pre-Pre-Pandemic periods (N=60 periods; 41 male, 19 female), mean activity decreased by 2.28±1.13 mins/day, and AF burden increased by 57% [50%-64%]. A significant negative correlation between activity and AF burden was demonstrated (coefficient -2.0, 95% CI -2.4, -1.6). A decrease in 2.0 activity minutes was associated with a 10% increase in AF burden.Conclusions:This natural history analysis of PA and AF burden demonstrated decreases in activity and increases in AF burden with time and the pandemic. Activity and AF burden were significantly negatively correlated.

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Novembre 2024

Abstract 4140585: Shifting in the settings of stroke fatalities during the COVID-19 pandemic

Circulation, Volume 150, Issue Suppl_1, Page A4140585-A4140585, November 12, 2024. Introduction:Stroke-related mortality poses significant challenges in the US. Increased at-home deaths since COVID-19 pandemic prompted changes in the provision of end-of-life care.Question:What were the settings of stroke deaths in the US during COVID-19 pandemic?Methods:Decedent-level mortality data from death certificates in CDC repository were obtained for the year 2020 (pandemic) and 2019 (comparison). Demographic data include age, sex, race/ethnicity, education, marital status, and place of stroke death, including inpatient, outpatient/emergency room (ER), hospice/nursing facilities (H/NF), and at-home. Multivariable logistic regression models assessed demographic impact on stroke mortality by place-of-death, yielding odds ratios (OR) with significance threshold of p65 years were more likely to die in H/NF (OR 10.05, p

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Novembre 2024

Abstract 4145229: Outcomes among hospitalized patients with stress-induced cardiomyopathy and concomitant Coronavirus Disease 2019 (COVID-19) infection: Insight from the US National Inpatient Sample

Circulation, Volume 150, Issue Suppl_1, Page A4145229-A4145229, November 12, 2024. Background:Stress-induced cardiomyopathy (CM) is a form of acute transient left ventricular dysfunction triggered by underlying physiological stress which often leads to increased morbidity and mortality. Coronavirus disease 2019 (COVID-19) is thought to cause stress-induced CM due to overwhelming systemic inflammation. There is paucity of data regarding the impact of COVID-19 on in-hospital outcomes of patients with stress-induced CM. The purpose of this study is to investigate in-hospital outcomes, including mortality and cardiogenic shock, of patients with concomitant COVID-19 and stress-induced CM.Methods:We queried the 2020 USA National Inpatient Sample (NIS) Database in conducting this retrospective cohort study. We identified hospitalized adult patients ≥ 18 years old with stress-induced CM and concomitant COVID-19 using ICD-10 CM codes. We used a survey multivariable logistic and linear regression analysis to calculate adjusted odds ratios (aORs) for outcomes of interest. A p value of

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Novembre 2024

Abstract 4145209: Death on Admission- Characterizing 30-Day Mortality in Patients Admitted to the Coronary Care Unit for Heart Failure Following the COVID-19 Pandemic

Circulation, Volume 150, Issue Suppl_1, Page A4145209-A4145209, November 12, 2024. Background:Acute decompensated heart failure accounts for an increasing proportion of hospitalizations in the United States and is linked to high readmission and 30-day mortality rates. Prior studies suggest up to 17% mortality rate within 30 days for patients admitted with heart failure.Research Questions/Hypothesis:We present an analysis characterizing patients who experienced mortality within 30 days of admission at a large safety net hospital following the COVID-19 pandemic.Methods/Approach:A retrospective review was conducted for all heart failure admissions of patients >18 years of age admitted to the coronary care unit (CCU) at Los Angeles General Medical Center from January to December 2021 after the peak of the COVID-19 pandemic. Demographics, insurance information, drug use, medication use, heart failure etiology, and CCU interventions were indexed. The primary outcome was all-cause mortality.Results/Data:172 patients were identified during the study period. 10% of patients died within 30 days of admission, of which 94% died during the same admission. Of patients who died during index admission, 88% had heart failure with reduced EF. None of these patients were on all four pillars of guideline-directed medical therapy (GDMT), with 33% on one or no GDMT medications.There was not a statistically significant difference in mortality rate when comparing those with active stimulant use 5/60 (8%) to those without active illicit drug use 12/112 (11%) (RR 0.79, 95% CI, p= 0.64).9/17 (53%) patients died of refractory cardiogenic shock, 5/17 (29%) were found in cardiopulmonary arrest of unknown etiology while undergoing treatment for acute decompensated heart failure. Two patients (12%) died of septic shock while 1/17 (5%) died of hemorrhagic shock related to chronic liver disease.Conclusion(s)The COVID-19 pandemic exacerbated significant healthcare inequalities, especially for urban underserved populations leading to late presentations of disease and worse outcomes, however, based on our data the overall inpatient mortality rate remained largely similar to pre-pandemic values.

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Novembre 2024

Abstract 4141333: Predictors of venous thromboembolism in hospitalized patients with COVID-19

Circulation, Volume 150, Issue Suppl_1, Page A4141333-A4141333, November 12, 2024. Background:COVID-19 is a multiorgan disease characterized by a prothrombotic state and increased risk of venous thromboembolism (VTE), especially in hospitalized patients. Although prior studies have attempted to identify predictors of VTE, restricted sample size and use of administrative claims data have limited such analyses. We conducted a multivariable analysis to identify predictors of VTE in hospitalized patients with COVID-19 in a multicenter patient-level registry.Methods:We utilized data from the CORONA-VTE Network, a US multicenter registry of 10,420 adult (≥18 years) patients with PCR-confirmed COVID-19 of whom 3,844 were hospitalized. The primary outcome was time-to-first-event for a composite of adjudicated pulmonary embolism and deep vein thrombosis (e.g. lower extremity, mesenteric, gonadal vein, etc.) during 90-day follow-up. The candidate variables were selected by a priori clinical consensus. The variables with ≥20% missing data were excluded, whereas those with missing data

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Novembre 2024

Abstract 4113573: Long Noncoding RNAs to Predict COVID-19 Neuro-Cardio-Vascular Outcomes

Circulation, Volume 150, Issue Suppl_1, Page A4113573-A4113573, November 12, 2024. Introduction/Background:Cardiovascular and neurological diseases develop in a significant proportion of COVID-19 patients. Minimally invasive tools to predict outcome after SARS-CoV-2 infection would enable personalized healthcare, potentially easing the disease burden. We showed that blood levels of the long noncoding RNA lymphoid enhancer-binding factor-1 antisense 1 (LEF1-AS1) predict COVID-19 in-hospital mortality.Hypothesis:LEF1-AS1 is associated with long-term clinical outcomes of COVID-19.Aim:Test the capacity of LEF1-AS1 to predict neuro-cardio-vascular outcomes post-SARS-CoV-2 infection.Methods/Approach:We enrolled 104 primo-infected COVID-19 patients aged 18+ recruited from April to December 2020 in the PrediCOVID national cohort for which 12-month follow-up data were available (Ethics Committee approvals 202003/07 and 202310/02-SU-202003/07). Whole blood samples were collected at baseline and expression levels of LEF1-AS1 were assessed by quantitative PCR.Results/Data:Of the 104 patients, 35 had at least one neurological symptom and one cardiovascular symptom at month 12. Levels of LEF1-AS1 at baseline were lower (p=0.019) in patients who developed neurological and cardiovascular symptoms as compared to patients who did not. Lower LEF1-AS1 was associated with symptoms development with an odds ratio of 0.48 (95% CI 0.28-0.83) from logistic regression model adjusted for age, sex, comorbidities and disease severity at baseline. Addition of LEF1-AS1 to a clinical model including age, sex, comorbidities and baseline severity yielded an incremental predictive value as attested by an increased AUC from 0.79 to 0.83 (likelihood ratio test p=0.005), a net reclassification index of 0.54 (p=0.007) and an integrated discrimination improvement of 0.08 (p=0.009).Conclusion:Blood levels of LEF1-AS1 predict 12-month neurological and cardiovascular outcomes of COVID-19 patients. This needs to be validated in larger populations.

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Novembre 2024

Abstract 4140218: Trends and Determinants of Outcomes in STEMI Patients with COVID-19: A Nationwide Analysis, 2020-2021

Circulation, Volume 150, Issue Suppl_1, Page A4140218-A4140218, November 12, 2024. Background:Prior data indicated a reduction in mortality among STEMI (ST-elevation myocardial infarction) patients with COVID-19 from 2020 to 2021 in the United States.Objective:To describe national trends and determinants of outcomes among STEMI patients with COVID-19 from 2020-2021.Methods:A retrospective cohort study was conducted using the 2020-2021 Nationwide Inpatient Sample of adults diagnosed with STEMI and COVID-19, assessing in-hospital mortality and the use of percutaneous coronary intervention (PCI), mechanical ventilation, and mechanical circulatory support (MCS).Results:The study included 6,195 STEMI patients with COVID-19 and revealed stable mortality (18% in 2020 to 21% in 2021,p=0.06). Demographic shifts occurred, with White patients increasing from 52% in 2020 to 66% in 2021 (p

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Novembre 2024

Abstract 4119613: Evaluation of Gender, Racial and Ethnic Differences in Time to PCI in the Pre and Post Covid-19 Era

Circulation, Volume 150, Issue Suppl_1, Page A4119613-A4119613, November 12, 2024. Introduction:Percutaneous Coronary Intervention (PCI) is recommended for reperfusion of patients presenting with ST-segment myocardial infarction (STEMI) within 90 minutes. In this study, we sought to identify differences in PCI timing based on gender, race and ethnicity in the pre- and post-COVID era.Methods:We collected retrospective data on 760 patients admitted with STEMI at our quaternary academic medical center from 2018-2022. We defined our binary outcome as time to PCI less than 90 minutes, and adjusted for transfers from outside hospitals. We utilized univariate logistic regression analysis to analyze the association of demographic, clinical, and cardiac catheterization details on our outcome. We then utilized multivariate logistic regression analysis to determine the association of our covariates of interests with time to PCI. The logistic regression model was adjusted for collinearity which were deemed not significant.Results:Among our study population, COVID did not significantly impact whether or not a patient had a diagnostic cardiac catheterization on univariate analysis (OR 2.68, 95% CI 0.61-18.40, p=0.23). However, the post-COVID era was significantly associated with a delayed time to PCI on multivariate analysis [OR 1.62, 95% CI 1.04-2.55, p=0.035) [Figure 1]. In addition, females were 1.8x more likely to have a delayed PCI than males on multivariate regression [OR 1.80, 95% CI 1.10-2.95, p= 0.019) [Figure 1]. Interestingly, on multivariate analysis, females were more likely to have delayed reperfusion in the pre-COVID era (OR 2.92, 1.29-6.77,p= 0.01) but not the post-COVID era (OR 1.54, 0.78-3.06,p=0.2134). Patients in the post-COVID era had increased risk of having their culprit coronary not revascularized on multivariate analysis (OR 2.85, 1.2-8.03, p= 0.03).Conclusions:At our center, COVID did not significantly impact cardiac catheterization rates. However, COVID was significantly associated with delayed reperfusion timing and not revascularizing culprit vessels. Females were much more likely to have a delayed PCI than males in the pre-COVID era which was not seen following COVID-19.

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Novembre 2024

Abstract 4145068: Machine learning analysis of serum proteome in the diagnosis of COVID-19 myocarditis

Circulation, Volume 150, Issue Suppl_1, Page A4145068-A4145068, November 12, 2024. Background:The COVID-19 global pandemic was the third leading cause of mortality in the US in 2020 and is associated with numerous complications, including myocarditis. Diagnosis of COVID-19 myocarditis can involve costly and invasive procedures. In addition, asymptomatic myocarditis could place people at risk for arrhythmias and sudden cardiac death.Objective:To use machine learning (ML) of serum proteomics to distinguish asymptomatic COVID-19 positive volunteers with and without myocarditis.Approach and Results:In 2020, for a cohort of 20 previously healthy 18–23-year-old individuals diagnosed with COVID-19 two weeks after the diagnosis, CMR was performed to assess for evidence of cardiac inflammation and serum samples were obtained the same day (10 were diagnosed as myocarditis positive and 10 negative) We performed proteomic analysis using the SomaScan proteomics assay from SomaLogic. The data were passed through an initial feature selection process of 1000 rounds of bootstrapped multivariate logistic regression using L1-regularization to introduce sparser feature utilization. The top 25 features (largest absolute log-odds) were utilized for a final logistic regression analysis. The feature selection step was optimized to have an average receiver operating characteristic area under the curve (ROCAUC) of 83.29% over 1000 iterations, but the final model utilizing only 25 proteins achieved an average ROCAUC of 99.58%. This method produced 22 proteins with significant odds-ratios for COVID-19 myocarditis (OR 95%CI excluding 1), of particular interest are those involved in inflammatory control and injury response mechanisms. Increases in the heat shock protein DNAJB11 (1.19 [1.10, 1.27]) and calponin-2 (1.17 [1.10, 1.25]), as well as decreases IL1RN (0.88 [0.83, 0.93]) were associated in increased likelihood of CMR diagnosed myocarditis (Fig 1A). Furthermore, a UMAP projection of the data using the 22 significant features yielded a clear visual distinction between those with and without COVID-19 myocarditis via CMR (Fig 1B).Conclusion:Utilizing ML on serum proteomic screenings of asymptomatic young COVID-19 patients, we can differentiate between those with CMR myocarditis positive and negative patients.

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Novembre 2024

Abstract 4140201: Disparities in Defibrillator Implantations during COVID-19: Insights from the NCDR registry

Circulation, Volume 150, Issue Suppl_1, Page A4140201-A4140201, November 12, 2024. Introduction:While implantable cardiac defibrillators (ICD) decrease sudden cardiac death, disparities in ICD use remain. The COVID-19 pandemic created strains on the US healthcare system that may have exacerbated these disparities.Methods:Using the US NCDR registry of primary and secondary prevention ICD implants, we compared sex, racial and ethnic disparities for 239,014 patients, aged 19-90 years, grouped into three time intervals from 2016 to 2022: Pre-COVID, COVID and Post-COVID. Centers without consistent reporting were excluded, as were patients with incomplete sex, race or ethnicity data. ICD implantation rates were compared using a Poisson regression model with interaction tests for sex, race and ethnicity by time window to see if disparities changed within this period. Implant rates by indication were also assessed.Results:Overall ICD implants decreased over the study period (Figure 1) with an average monthly rate of 3271 in the first three months of 2016 declining to 2334 in the last three months of 2022 (p=0.017). Disparities in ICD implantation for women, racial and ethnic minorities were observed pre-COVID and persisted (Table 1). Average ICD implant rates during these time periods varied by race with predominance in White patients. While gaps in ICD implant persisted, the disparities did not worsen during COVID-19 by sex, race or ethnicity (p-value for interactions were 0.79; 0.47; and 0.095, respectively). There was a more significant decrease in primary prevention ICD compared to secondary prevention ICD (p

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Novembre 2024

Abstract 4141078: Hearing the Voices of Families: Barriers and Facilitators of Pediatric Cardiac Ambulatory Care During the COVID-19 Pandemic

Circulation, Volume 150, Issue Suppl_1, Page A4141078-A4141078, November 12, 2024. Background:Social determinants of health (SDOH),exacerbated by the COVID-19 pandemic, impact access to medical care.Research Question:Through descriptive qualitative inquiry, we explored barriers and facilitators to pediatric cardiology ambulatory care for patients with complex congenital heart disease (CCHD) during COVID-19.Methods:English- and Spanish-speaking caregivers of children with CCHD who missed at least one clinic visit during the first year of COVID-19 were recruited, with purposeful sampling of Black and Hispanic patients. Semi-structured interviews inquired about the impact of the pandemic, experience with telehealth and communication with providers, effects of SDOH, and perceived impact of their race/ethnicity on care. Content analysis summarized information and identified themes.Results:Interviews (19) were conducted: 14 in English (6 Black, 2 Hispanic, 2 White, 3 mixed race, 1 American Indian), and 5 in Spanish (5 Hispanic). Overarching themes were: Barriers to Care, Facilitators of Returning/Staying in Care, Impact of Diagnosis, and Recommendations for Improvement (Image 1). Despite challenges with finances and transportation, as well as concern for infection risk, the majority of caregivers preferred in-person care over telehealth due to physical exam, diagnostic testing, and interpersonal connection with providers. SDOH challenges including housing, transportation, and employment contributed to missing care. For some families, social vulnerability was exacerbated by their child’s CCHD diagnosis and then again by COVID-19. Universally, caregivers felt their child’s race/ethnicity did not affect the care they received. Spanish-speaking caregivers expressed their primary language as a barrier to care and their desire for more thorough explanations and teach-back from the medical team.Conclusion:While SDOH can hinder access to ambulatory cardiac care, trusting relationships with care teams facilitated engagement. Social vulnerability contributed to dynamic situations for families, especially during COVID-19, highlighting the need for routine SDOH assessment and support. English- and Spanish-speaking caregivers echoed the same challenges. Race/ethnicity was not felt to impact care received.

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Novembre 2024

Abstract 4137534: Troponin Can Predict Late Gadolinium Enhancement on Cardiac MRI in COVID-19 Vaccine-Associated Myocarditis

Circulation, Volume 150, Issue Suppl_1, Page A4137534-A4137534, November 12, 2024. Background/Aim:We previously reported that late gadolinium enhancement (LGE) on cardiac MRI (CMR) was as high as 82% in pediatric patients with COVID-19 vaccine-associated myocarditis (C-VAM) despite mild clinical symptoms and normal left ventricular function. As LGE can be a harbinger for future adverse events including arrhythmias, heart failure or sudden cardiac death, we sought to identify predictors for LGE in C-VAM, specifically assessing troponin as a screening marker for C-VAM patients at risk for myocardial scarring who could then be referred for a confirmatory CMR with LGE.Methods:In this longitudinal multicenter retrospective observational study across 38 U.S. member institutions of theMyocarditisAfterCOVIDVaccination (MACiV) study network, 333 patients with C-VAM based on CDC criteria were included from April 2021 to November 2022. Data collected included demographics, laboratory values, clinical and cardiac imaging characteristics and outcomes. Using logistic regression, troponin levels at presentation were assessed as a log transformed continuous variable and categorized into tertiles.Results:The C-VAM patients were predominantly white (67%) adolescent males (91%, 15.7± 2.8 years). There were 216/333 (65%) patients who had both a reported troponin value and had a CMR. On univariate analysis, elevated troponin increased the probability of having LGE (OR=1.29, 95% CI: 1.06, 1.58, p=0.012). Even after controlling for age, race, sex, number of vaccine doses and left ventricular ejection fraction (OR=1.32, 95% CI: 1.06, 1.65, p=0.013). Patients >15 years compared to those ≤15 years of age were 2.94 (95% CI: 1.28, 6.75, p=0.011) times more likely to have LGE at presentation. Patients with troponin levels in the highest tertile compared to lowest tertile were 2.66 times (95% CI: 1.04, 6.83, p=0.042) more likely to have LGE along with a greater involvement > 4 AHA myocardial segments with LGE (p=0.004)Conclusions:Higher troponin values are associated with presence of late gadolinium enhancement on cardiac MRI in patients with COVID-19 vaccine-associated myocarditis. Troponin levels at presentation may facilitate risk stratification and function as a screening tool to identify those C-VAM patients with the greatest likelihood of myocardial scarring, who may benefit from undergoing CMR for tissue characterization.

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Novembre 2024

Abstract 4142935: Circulating endothelial cells and microthrombosis as markers of vascular dysfunction in Long COVID

Circulation, Volume 150, Issue Suppl_1, Page A4142935-A4142935, November 12, 2024. Background.Post-COVID syndrome is related to a multisystem disorder that affects in part the cardiovascular system. This disease involves symptoms, and conditions that continue or develop after acute COVID-19. SARS-CoV-2 infection of immune and endothelial cells are associated with NETosis, microthrombosis and endothelial dysfunction that could persist several weeks after acute phase of infection. Damaged endothelial cells can expose the vessel pro-coagulant area leading to platelet and neutrophil clumps. Increased levels of circulating endothelial cells (CECs) have been described as biomarkers for cardiovascular diseases. Therefore, we hypothesize that CECs and microthrombosis are potential biomarkers of vascular dysfunction in Long COVID.Methods.A cross-sectional study was conducted at the Miami VA long COVID clinic. Long COVID cases and controls were recruited according to WHO definition for long COVID. A total of 23 patients and 7 controls were included in this study. Blood samples were collected in Heparin and Sodium Citrate tubes. Cell immunophenotyping and NETosis markers (MPO) were quantified on a Cytek Aurora spectral flow cytometer system. Microclots (CD62P+PAC-1+) and platelet response were assessed by flow cytometry and response to Adenosine di-phosphate (ADP), respectively. A ttest was used for statistical analysis. Differences were considered significant when p < 0.05.Results.The age and gender were similar between cases and controls while their symptom score was significantly different. There was a significant increase in the number of CECs (CD31+CD309+CD45-CD133-) in Long COVID cases. MPO expression in neutrophils (CD11b+CD66b+CD15+) and classical monocytes (CD14+CD16-) was significantly higher in Long COVID. Microclots were significantly elevated, and the platelet aggregation response was dysregulated in Long COVID.Conclusions.CECs and microthrombosis including NETosis are present in Long COVID and may serve as potential biomarkers or causative mechanisms for vascular dysfunction.

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Novembre 2024

Abstract 4142129: The Role of Neutrophil to Lymphocyte Ratio and Right Ventricular Dysfunction in Indonesian Patients with COVID-19

Circulation, Volume 150, Issue Suppl_1, Page A4142129-A4142129, November 12, 2024. Background:The clinical impact of neutrophil to lymphocyte ratio (NLR) and right ventricular (RV) dysfunction on clinical outcomes in COVID-19 have not been studied in the often-underrepresented Indonesian population.Aim:To investigate the role of NLR and RV dysfunction in Indonesian patients hospitalized for COVID-19.Methods:A retrospective cohort study was conducted at a COVID-19 referral hospital in Indonesia. We included all adult patients hospitalized with COVID-19 between April 2020 – April 2021 who had transthoracic echocardiography (TTE) during admission. Clinical data were extracted from electronic medical records. TTE variables were defined according to the American Society of Echocardiography criteria. All statistical analyses were conducted using the SPSS software. This study was approved by the IRB at Universitas Indonesia (#2022-01-135).Results:A total of 488 patients were included – 29 with and 459 without RV dysfunction. The mean age of the population was 54.8 (SD ± 13.5), and 42% were females. Receiver operating curve analysis and Youden’s J statistics were used to determine the optimal NLR cut-off (Figure 1). An NLR > 4.79 was considered elevated, and had a sensitivity of 70.6% and a specificity of 80.6% in predicting severe – critical COVID-19. A high NLR (OR: 3.38, P = 0.02) and LV systolic dysfunction (OR: 9.76, P < 0.01) were independently associated with RV dysfunction. In multivariate cox regression analysis, older age (HR: 1.02, P = 0.01), obesity (HR: 1.85, P < 0.01), chronic kidney disease (HR: 1.69, P = 0.01), high NLR (HR: 2.75, P < 0.01), and RV dysfunction (HR: 2.07, P = 0.02) increased the risk of 30-day mortality.Conclusions:In Indonesian patients hospitalized with COVID-19, A high NLR is predictive of severe – critical COVID-19 and is associated with RV dysfunction. A high NLR at admission and RV dysfunction independently increase the risk of 30-day mortality in hospitalized Indonesian adults with COVID-19.

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Novembre 2024

Abstract 4139661: Usefulness of High-sensitive Troponin I and N-terminal pro-B-type Natriuretic Peptide in Coronavirus Disease 2019 Risk Stratification on and after Omicron Variant Waves: COVID-MI Registry Cohort-2 Analysis

Circulation, Volume 150, Issue Suppl_1, Page A4139661-A4139661, November 12, 2024. Introduction:Troponin-defined myocardial injury or N-terminal pro-B-type natriuretic peptide (NT-proBNP) elevation frequently coincides with coronavirus disease 2019 (COVID-19). Our prior study (COVID-MI Registry Cohort-1) confirmed that high-sensitive troponin I (HsTnI) and NT-proBNP effectively stratified mortality risk. However, variants of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) change rapidly, and it remains unclear whether these biomarkers are consistently effective in predicting prognosis of COVID-19 patients irrespective of epidemic periods.Research Questions:Can HsTnI or NT-proBNP stratify mortality risk in recent COVID-19 cohorts?Aims:To assess the potential of HsTnI and NT-proBNP levels for risk stratification in the recent COVID-19 waves.Methods:In the COVID-MI Registry Cohort-2, we enrolled 1115 consecutive COVID-19 patients admitted between October 2021 and October 2022, during the Omicron variant endemic. We collected data of HsTnI or NT-proBNP levels from hospital charts or using the samples in our hospital’s serum/plasma bank if the data were not available. The primary outcome measure was all-cause mortality.Results:On admission, more than one-third of patients were classified as having severe COVID-19. HsTnI and NT-proBNP levels were available for 427 and 414 patients, respectively. The median HsTnI and NT-proBNP levels were 16 (interquartile range [IQR]: 5-57) ng/L and 524 (IQR: 140-2056) pg/mL, respectively. We stratified the patients into three groups by HsTnI level:

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Novembre 2024