Abstract 4141173: CMR can discriminate need for biopsy and rejection therapy in children post heart transplant

Circulation, Volume 150, Issue Suppl_1, Page A4141173-A4141173, November 12, 2024. Background:Heart transplantation remains definitive therapy for children with heart failure, but the burden of acute graft rejection remains. While adult data has shown cardiac magnetic resonance (CMR) offers reliable, non-invasive identification of graft rejection1-3, endo-myocardial biopsy (EMB) continues to be the gold-standard in children.Hypothesis:CMR can establish the presence/absence of rejection, guiding need for EMB and rejection therapy.Aims:To assess the (1) strength of CMR parametric mapping in discriminating presence of rejection (defined as need for new therapy), and (2) the ability of CMR to identify patients without rejection, negating the need for EMB.Methods:Pediatric heart transplant patients referred for EMB underwent concurrent noncontrast CMR with volumetry, flows, MOLLI T1 and T2 parametric mapping at 1.5T. Average and peak segmental native T1 and T2 were measured in 6 slices, and regions of sub-segmental ‘hotspot’ elevation (3 continuous voxels T1 >1050 ms or T2 >60 ms) were identified. Rejection treatment was per institutional protocol, blinded to CMR results, categorized as (A)new IV therapy, (B)oral augmentation of maintenance, or (C) no change. Sensitivity, specificity and ROC analyses were performed.Results:95 encounters in 34 patients (median age 13.1y (IQR 7.5-16.3), BSA 1.37 m2 (1.1-1.6), 47% female) were completed, with treatment groups A 13%, B 5%, and C 82%. Significantly higher T1 and T2 values were found in the rejection groups. ROC curve analysis identified elevated peak T1 levels as the strongest predictor of rejection (AUC = 0.848, 95% CI: 0.746, 0.950, p1099 ms. Subsegmental hotspots were present in all encounters with rejection requiring new therapy (100% sensitivity), however the type/ number of hotspots did not correlate with rejection. New rejection therapy was not initiated in any patient encounter without hotspots (NPV 100%).Conclusions:Elevated segmental T1 CMR values can identify children with graft rejection, and absence of subsegmental hotspot elevations can reliably identify patients without rejection. CMR is a promising non-invasive test to aid in graft surveillance and direct invasive testing and therapy.

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Novembre 2024

Abstract 4116298: Once Weekly Utreglutide (GL0034), a Glucagon-like Peptide-1 Receptor Agonist, at 4 × 450 µg Doses Reduces Blood Pressure, Lipids, and Body Weight in Post-menopausal Females: A Phase I Study

Circulation, Volume 150, Issue Suppl_1, Page A4116298-A4116298, November 12, 2024. Background:Utreglutide (GL0034), a novel, once weekly glucagon-like peptide-1 receptor agonist (GLP-1RA), previously demonstrated significant reductions in body weight (BW) after a single dose ascending study in individuals with obesity.BW reductions after pharmacological treatment of obesity with GLP-1RA is associated with blood pressure (BP) lowering effects.Aim:This phase I study assessed the safety, tolerability, and cardio-metabolic effects of utreglutide after multiple ascending doses in post-menopausal female volunteers with overweight and obesity.Methods:In this randomized, double-blind, placebo-controlled study 12 post-menopausal female volunteers with overweight/obesity, aged 18 to 65 years old with a body mass index (BMI) ≥26 kg/m2were randomized (9:3) to subcutaneous utreglutide fixed doses (4 × 450 µg); or placebo once weekly for four weeks. Safety, tolerability, and key cardio-metabolic parameters were assessed. Biomarker measurements included oral glucose tolerance test (OGTT) insulin and glucose area under the curve (AUC), systolic- and diastolic BP, lipid profile (triglycerides (TG), total cholesterol (TC), low density lipoprotein (LDL), and non-high-density lipoprotein (non-HDL), creatinine, potassium, BW and leptin.Results:Utreglutide was generally well tolerated and related adverse effects were mainly gastrointestinal with dose-dependent nausea, vomiting and decreased appetite. Reductions in OGTT AUCs of insulin (p

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Novembre 2024

Abstract 4135923: Predictive Value of Supraventricular Tachycardia on Ambulatory ECG Monitoring for Recurrent Atrial Fibrillation Post-Catheter Ablation

Circulation, Volume 150, Issue Suppl_1, Page A4135923-A4135923, November 12, 2024. Introduction:Established predictors of recurrent atrial fibrillation (AF) following catheter ablation (CA) have not incorporated findings on post-CA ambulatory ECG monitoring (AECG).Aims:This study examined the predictive value of supraventricular tachycardia (SVT) detected on 7–14-day AECG for recurrent AF within one year post-CA.Methods:This single-center retrospective study included a select subset of patients who underwent CA for AF between 2015 and 2023 and had AECG monitoring within the first year post-CA. SVT presence and characteristics on AECG were analyzed.Data on demographics, AF risk factors, and AF recurrences were extracted from electronic health records. ROC curves determined SVT episode thresholds. A multivariable regression model included established risk factors and SVT thresholds, and best subsets regression identified predictors of AF recurrence.Results:Of 7,481 patients undergoing CA for AF, 1,245 were monitored within one year post-CA. Among this subset, 439 (35.26 %) had recurrent AF during the first year post- CA. Of the 439 patients with recurrent AF, 99 had AECG monitoring before recurrence. These 99 patients were compared with the 672 patients with no AF recurrence. Average duration of AECG monitoring for the entire cohort was 11±2.7 days. Mean SVT episodes per day ≥4.6 and total number of SVT episodes ≥14.5 were significantly associated with recurrent AF (OR =1.99, P =0.030, and OR =2.77, P =0.019, respectively). Significant predictors of AF recurrence were female gender, heart failure, confirmed SVT, cardioversion before ablation, mean SVT episodes per day, and total SVT episodes on AECG.Conclusion:High burden of SVT on AECG monitoring (defined in this study to be ≥4.6 episode per day or ≥14.5 total episodes per monitoring period) was significantly associated with AF recurrence. Longitudinal studies in larger unselected populations are needed to confirm these results.

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Novembre 2024

Abstract 4146021: Post transcatheter aortic valve replacement outcomes among patients with heart failure with preserved ejection fraction versus heart failure with reduced ejection fraction.

Circulation, Volume 150, Issue Suppl_1, Page A4146021-A4146021, November 12, 2024. Background:Heart failure with preserved ejection fraction (HFpEF) or heart failure with reduced ejection fraction (HFrEF) is a common comorbidity in patients undergoing transcatheter aortic valve replacement (TAVR). However, post-TAVR outcomes among HFpEF and HFrEF patients have not been well studied.Objective:This study aims to investigate the clinical outcomes post-TAVR among patients with HFrEF vs. HFpEF.Methods:The TriNeTX Global Collaborative Network research database was used to identify patients aged ≥18 years from January 2005 to May 2023. Patients were categorized into two groups: HFpEF and a control group with HFrEF, with both groups of patients undergoing TAVR and followed for 1-month and 1-year. Propensity score-matched analysis (PSM) (1:1) was performed on age, gender, race, body mass index, hypertension, diabetes mellitus, chronic kidney disease, smoking status, hemoglobin level, low density lipid (LDL) level, and various drugs including ACEi, ARBi, beta-blockers, SGLT2i and statins. Primary outcome was all-cause mortality (ACM), while secondary outcomes were acute myocardial infarction (AMI), ischemic stroke, hemorrhagic stroke, major bleeding and major adverse cardiovascular event (MACE) (composite of ACM, AMI and ischemic stroke).Results:After 1:1 propensity score matching (Figure 1), the study cohort comprised of 11, 982 patients in HFpEF with TAVR and 11, 982 patients in the control group. The mean age of patients in HFpEF and HFrEF was 81.7 and 81.5 years, respectively. PSM analysis showed that post-TAVR outcomes among HFpEF patients were significantly associated with lower risk of ACM after 1-month (RR, 0.88 (95%CI: 0.707-0.953),P=0.009), and after 1-year (RR, 0.93 (95% CI: 0.87-0.99),P=0.041) compared with the HFrEF group. A similar trend was observed with a significant reduction in the risk of MACE after 1-month (RR, 0.86, (95% CI: 0.74-0.99),P=0.043), however, it was non-significant after 1-year (RR, 0.942 (95% CI: 0.881-1.007),P=0.077). However, the risk of AMI, ischemic stroke, hemorrhagic stroke, major bleeding both at 1-month and 1-year follow up were comparable between the HFpEF and HFrEF post-TAVR.Conclusion:In patients with HFpEF post-TAVR, there was a significant decrease in ACM at 1-month and 1-year, while there was a significant reduction in MACE only at 1-month. Further investigation is warranted to determine whether HFpEF has better clinical outcomes than patients with HFrEF.

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Novembre 2024

Abstract 4138486: Unplanned Readmissions Due to Post-Acute Myocardial Infarction Complications: Insights from the Nationwide Readmission Database

Circulation, Volume 150, Issue Suppl_1, Page A4138486-A4138486, November 12, 2024. Introduction:Acute myocardial infarction (MI) is a leading cause of morbidity and mortality worldwide. Despite advances in treatment, readmissions within 30 days remain a significant concern, impacting both patient outcomes and healthcare costs. This study aims to analyze trends in 30-day readmission rates (30-dr) for patients discharged after an acute MI.Methods:We analyzed the 2016-2020 Nationwide Readmission Database for patients aged ≥ 18 years with initial admission of acute MI and were readmitted within 30 days. Variables were identified using ICD-10 codes. The primary outcome was trends in 30-dr; secondary outcomes included trends in complications, mortality rate, length of stay (LOS), and healthcare costs. Multivariate and descriptive bivariate analyses were conducted, with p-values

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Novembre 2024

Abstract 4140703: CXCL10 and IFN-γ Mediate Myocardial Injury Post-COVID-19 mRNA Vaccination

Circulation, Volume 150, Issue Suppl_1, Page A4140703-A4140703, November 12, 2024. Background:The mRNA vaccines against COVID-19 are highly effective but have been associated with a rare non-infective form of myocarditis, particularly in young males after receiving the second dose. Understanding the mediators of this adverse effect is crucial to enhance the safety of future mRNA vaccines.Hypothesis:Myocardial injury following COVID-19 mRNA vaccination is mediated by overproduced cytokines, and estrogens have a protective effect on this adverse effect.Approach:Candidate cytokine mediators were identified through analysis of proteomics data from plasma samples of vaccinated individuals. Human iPSC-derived macrophages and cardiomyocytes were used to model cytokine-induced effects. An in vivo mouse model of cytokine-induced myocardial injury was employed to assess the impact of the cytokine cocktail and estrogens.Results:CXCL10 and IFN-γ were consistently upregulated in vaccinated individuals on day 1 and further elevated in patients with myocarditis following mRNA vaccination. Consistently, iPSC-derived macrophages exposed to COVID-19 mRNA vaccines produced these cytokines. Next, iPSC-derived cardiomyocytes exposed to these cytokines showed impaired contractility, arrhythmogenicity, and pro-inflammatory gene expression. The phytoestrogen genistein mitigated these effects in vitro, reducing cytokine-induced proteasomal degradation of cardiac proteins and preserving contractile function. In vivo, genistein significantly decreased cardiac injury markers and immune cell infiltration in a mouse model of cytokine-induced myocardial injury.Conclusion:CXCL10 and IFN-γ are key mediators of myocardial injury post-mRNA vaccination. Genistein shows potential as a therapeutic agent to mitigate associated cardiovascular risks.

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Novembre 2024

Abstract 4146173: Effect of Sodium-Glucose Cotransporter-2 Inhibitors on Atrial Fibrillation Recurrence Post-Ablation: A Systematic Review and Meta-Analysis

Circulation, Volume 150, Issue Suppl_1, Page A4146173-A4146173, November 12, 2024. Background:Recurrent atrial fibrillation (AF) occurs in approximately 20 to 40% of patients following catheter ablation. SGLT2 inhibitors (SGLT2i), known for their cardiovascular benefits beyond glycemic control in type 2 diabetes, exhibit multiple pleiotropic effects. These effects offer glucose-independent and direct cardiac protection, potentially enhancing atrial remodeling. Studies suggest that SGLT2 inhibitors may also reduce atrial tachyarrhythmia and lower the risk of recurrence after the initial ablation procedure.Methods:We conducted a systematic review and meta-analysis following PRISMA guidelines. Studies were identified from three databases up to May 2024: MEDLINE/PubMed, Scopus, and the Cochrane Central Register of Controlled Trials. Primary outcomes included AF recurrence with secondary outcomes of left ventricular ejection fraction (LVEF) improvement, hospitalizations and adverse events. Data was extracted and analyzed using R/R Studio. Random effects model was utilized to calculate odds ratios (OR) and 95% confidence intervals (CI).Results:Six studies were included with 5,456 participants (2,514 in SGLT2i group, 2,942 in control group). SGLT2i significantly reduced AF recurrence (OR = 0.44, 95% CI: 0.29-0.67, I2= 65%, p = 0.01). Four studies with 1,044 participants showed a non-significant trend towards LVEF improvement with SGLT2i (OR = 1.99, 95% CI: 0.99-3.99, I2= 0%, p = 0.88). Hospitalization rates from five studies (5,184 participants) showed no significant difference between groups (OR = 1.07, 95% CI: 0.63-1.82, I2= 46%, p = 0.12). Adverse events in four studies (734 participants) were not significantly higher in the SGLT2i group (OR = 1.19, 95% CI: 0.56-2.52, I2= 0%, p = 0.53).Conclusions:The results suggest that SGLT2i use significantly reduces AF recurrence following catheter ablation, with a trend toward LVEF improvement, though not statistically significant. Hospitalization rates and adverse events did not significantly differ between the SGLT2i and control groups, indicating a favorable safety profile. These findings support the potential benefit of SGLT2i in post-ablation management. Further large-scale randomized controlled trials are needed to confirm these results.

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Novembre 2024

Abstract 4134630: Focal Delivery of Antiplatelet Therapy to Prevent Post-Stent Bleeding in High-Risk Patients

Circulation, Volume 150, Issue Suppl_1, Page A4134630-A4134630, November 12, 2024. Background:Over 3 million percutaneous coronary interventions (PCI) are performed yearly to treat coronary artery stenosis. Stent thrombosis is a catastrophic complication associated with high morbidity and mortality, and its prevention requires the use of prolonged dual antiplatelet therapy (DAPT), which increases bleeding risk. Within the first 30 days after PCI, the mortality of DAPT-associated major bleeding is on par with recurrent myocardial infarction.Research question:No stent system that provides focal antiplatelet activity to prevent stent thrombosis exists, eliminating the need for systemic DAPT and subsequent bleeding risk.Aim:To address this unmet need, we have developed such a stent, termed “the ticagrelor coated stent” (TCS).Methods:Self-assembled monolayers (SAMs) of 12-aminododecylphosphonic acid (ADPA) were formed on cobalt-chromium stents. The amine tail group of ADPA was used to link the ticagrelor molecule through a Mitsunobu reaction and confirmed via infrared spectroscopy. Coating uniformity was validated via atomic force microscopy. In an ex-vivo porcine arterio-venous fistula model, the ticagrelor-coated stents (TCS) were placed in alternating series adjacent to uncoated bare metal stents (BMS). Similarly, TCS and everolimus-eluting stents were placed in the porcine left circumflex arteries for acute (7 days) and chronic (35 days) studies.Results:(Figure 1): Grossly, no thrombus was seen on the TCS compared to the BMS. Platelet and micro-thrombi adherence were significantly reduced on TCS. Notably, inflammation, measured by neutrophil and monocyte adherence, was also reduced by approximately 10-fold on the TCS vs the BMS. Angiography, optical coherence tomography (OCT), and histopathology results show the TCS widely patent without systemic DAPT.Conclusion:These findings show that TCS prevents stent thrombosis through focal anti-platelet action and may reduce the bleeding risk associated with prolonged use of systemic DAPT. Long-term safety and efficacy studies are underway.

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Novembre 2024

Abstract 4146008: Association of Pre-operative Neutrophil to Lymphocyte Ratio (NLR) and Post-operative AKI in Patients Undergoing CABG: A Meta-Analysis

Circulation, Volume 150, Issue Suppl_1, Page A4146008-A4146008, November 12, 2024. Objective:Inflammation is associated with pathologies including post operative acute kidney injury (AKI). AKI is one of the common post operative conditions which prolongs hospitalization, intensive care unit stay and causes higher health costs and mortality. Pre-operative neutrophil to lymphocyte ratio (NLR) has predictive value for post-operative AKI after coronary artery bypass grafting (CABG). Hence, we aimed to evaluate the association of pre-operative NLR and post-operative AKI in patients undergoing CABG.Methods:A comprehensive literature review was conducted using PubMed, Google Scholar and SCOPUS databases from 2000 until 2024 using related keywords to identify studies reporting association of pre-operative NLR and post-operative AKI in patients undergoing CABG. The data was extracted and independently reviewed by four authors using standard forms. A random-effects model was used to calculate odds ratios (OR) and heterogeneity was assessed using I2 statistics. The sensitivity analysis was performed using the leave-one-out method.Results:Our final analysis included 6 retrospective studies which included 1757 patients with CABG. The mean age of the included patients was 64 years and 63.4% were males. Initial unadjusted analysis showed higher odds of post-operative AKI in patients having higher pre-operative NLR values with unadjusted OR 1.67, 95% CI 1.20-2.34, p

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Novembre 2024

Abstract 4140722: Racial Disparity among the clinical outcomes in post Ablation Atrial Fibrillation patients: A Global Retrospective Study

Circulation, Volume 150, Issue Suppl_1, Page A4140722-A4140722, November 12, 2024. Background:Racial disparities have been well described in cardiovascular disease. However, the impact of race on the outcomes post atrial fibrillation (AF) ablation is not well understood.Objective:This study aim to investigate the clinical outcomes post AF ablation among Black and White patients.Method:The TriNeTX Global Collaborative Network database was used to identify patients aged ≥18 years of age from January 2000 to April 2023 which included atrial fibrillation post-ablation patients. Patients were categorized into two groups, one with Black or African American race and another with White race groups. Both groups were followed for 12 months. We used the international Classification of Disease, Tenth Revision, Clinical Modification (ICD-10-CM) codes to identify comorbidities, and ICD-10 Procedure coding system for procedures. Propensity score-matched analysis (PSM) (1:1) was performed on age, gender, BMI, smoking, hypertension, diabetes mellitus, chronic kidney disease, hemoglobin level and left ventricular ejection fraction. The primary outcome was all-cause mortality (ACM), while secondary outcomes were ischemic stroke, hemorrhagic stroke, acute myocardial infarction (AMI), MACE (composite of ACM, heart failure, AMI, and ischemic stroke) and heart failure (HF).Result:After 1:1 propensity score matching, the study cohort comprised 10, 335 Black patients and 10,335 White patients. The mean age of patients was comparable between both groups (65.2 and 64.9 years). Post ablation, Black patients were having a significantly higher risk of ACM (RR 1.131, 95% CI: 1.002-1.277), HF (RR 1.473, 95% CI: 1.290-1.683), AMI (RR 1.312, 95% CI: 1.117-1.342), and MACE (RR 1.416, 95% CI: 1.250-1.603) as compared with white population. However, the risk of ischemic stroke (RR 1.069, 95% CI: 0.878-1.301) and hemorrhagic stroke (RR 1.466, 95% CI: 0.908-2.369) were found comparable between Black and White patients post ablation.Conclusion:These findings suggest that Black patients post AF ablation were having a higher risk of mortality and MACE.

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Novembre 2024

Abstract 4118018: Increased Risk of Post-Transplant Malignancy After Isolated Heart Transplant in Adult Patients with Congenital Heart Disease

Circulation, Volume 150, Issue Suppl_1, Page A4118018-A4118018, November 12, 2024. Introduction:Patients with congenital heart disease (CHD) are at increased risk of cancer. In patients with CHD and advanced heart failure, isolated heart transplantation (HT) can be considered. In the overall HT population, immunosuppression after HT increases the risk of post-transplant malignancy (PTM). However, cancer outcomes among adult HT patients with CHD have not been investigated.Methods:Patients aged ≥ 18 years who received HT between January 1, 2010 and December 31, 2021 were identified using the United Network for Organ Sharing (UNOS) registry. Patients with CHD were compared to those without. Outcomes were PTM and hematologic malignancy (either leukemia, lymphoma or post-transplant lymphoproliferative disorder). Multivariable Fine-Gray competing-risk regression adjusting for age, sex, race, prior cardiac surgery, smoking, diabetes, induction immunosuppression, recipient and donor cytomegalovirus and Ebstein-Bar virus status was used to estimate subhazard ratio (SHR).Results:Of the total of 29,717 patients with HT were included, 1,017 (3.4%) had CHD. Patients with CHD were younger, more likely to be female, and more likely to have had prior cardiac surgery. After multivariable competing-risk regression, CHD was associated with higher risk of PTM (aSHR 1.44, 95% CI 1.15 – 1.80) and hematologic malignancy (aSHR 2.09, 95% CI 1.28 – 3.42). Among patients < 45 years old, CHD had an unadjusted SHR of 1.55 (95% CI 1.11 – 2.16) of PTM, Figure.Conclusions:Among adult patients with HT, CHD was associated with increased risk of PTM and hematologic malignancy. Further investigation is warranted to identify risk factors and screening strategies for malignancy in this patient population.

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Novembre 2024

Abstract 4145353: Sex Differences in Post-PCI Myocardial Injury and Long-Term All-Cause Mortality

Circulation, Volume 150, Issue Suppl_1, Page A4145353-A4145353, November 12, 2024. Background:Myocardial injury complicating percutaneous coronary intervention (PCI) is associated with mortality, but sex differences in outcomes are uncertain. We explored sex differences in the incidence and long-term outcomes of post-PCI myocardial injury (PPMI).Methods:Adults who underwent PCI at NYU between 2011-2020 were included in this retrospective analysis. Patients with ACS as the indication for PCI were excluded. PPMI was defined as a peak CKMB concentration >99% of the upper reference limit. The incidence of PPMI by sex was compared by Chi-square tests. Independent predictors of elevated CKMB post-PCI were evaluated with linear regression models in subgroups by sex. Cox proportional hazard models were generated to evaluate relationships between PPMI and all-cause mortality by sex.Results:Of 10,807 adults undergoing PCI, 24.9% (2,694) were female. Females were older than males at the time of PCI (68.9 vs. 65.8, p

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Novembre 2024

Abstract Or108: Optimizing Post-resuscitation Care after Resuscitative Endovascular Balloon Occlusion of the Aorta and Automated Head-up Position Cardiopulmonary Resuscitation.

Circulation, Volume 150, Issue Suppl_1, Page AOr108-AOr108, November 12, 2024. Background:Addition of resuscitative endovascular balloon occlusion of the aorta (REBOA) to automated head-up position (AHUP) cardiopulmonary resuscitation (CPR), the combination of active compression decompression CPR, an impedance threshold device, and controlled gradual elevation of the head and thorax, increases cerebral perfusion pressure. Optimal management of REBOA deflation after prolonged AHUP-CPR and ROSC is unknown.Hypothesis:We hypothesized that partial deflation of REBOA, rather than full deflation after ROSC, would result in better hemodynamic parameters.Aims:To compare hemodynamic parameters 1 minute before and 1 minute after complete (100%) versus partial (50%) REBOA deflation after prolonged AHUP-CPR and ROSC.Methods:Yorkshire pigs weighing ∼40 kg were anesthetized and ventilated. After 10 minutes of untreated ventricular fibrillation, AHUP-CPR was started and continued for a median time of 44 minutes. After ROSC, REBOA deflation was initiated in two ways: complete (100%) or partial (50%) deflation over 5 seconds. The following hemodynamic parameters were measured 1 minute before and 1 minute after deflation: mean aortic pressure (MAP), cerebral perfusion pressure (CerPP), and coronary perfusion pressure (CorPP). Data, in mmHg, are presented as mean ± SD, and compared using a paired t-test.Results:13 pigs were included, with 8 pigs in the 100% deflation group and 5 in the 50% deflation group. After ROSC in the 100% deflation group, MAP was 81.5±36.0 before deflation vs. 43.0±14.4 after (p=0.01), whereas in the 50% deflation group, MAP was 90.5±33.0 vs. 83.4±33.3 (p=0.02). CerPP was 72.3±34.4 before deflation vs. 35.9±14.6 (p=0.01) in the 100% deflation group, and 84.6±31.2 vs. 77.6±31.8 (p=0.02) with 50% deflation. Similarly, CorPP was 74.1±37.3 before deflation vs. 36.1±15.8 (p=0.01) after in the 100% deflation group, and 83.0±32.7 vs. 76.1±33.0 (p=0.02) in the 50% deflation group. The differences from before to after deflation were markedly less in the 50% deflation group versus the 100% deflation group: MAP (7.0±4.3 vs. 38.5±25.7, p=0.02), CerPP (7.1±4.4 vs. 36.3±24.4, p=0.02), and CorPP (6.0±4.2 vs. 39.8±25.2, p=0.02), respectively.Conclusion:In this porcine model of prolonged cardiac arrest, partial deflation of the REBOA balloon post ROSC resulted in strikingly higher hemodynamics compared with complete deflation. These findings highlight the need to develop a post-ROSC REBOA deflation strategy when used during AHUP-CPR.

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Novembre 2024

Abstract 4145489: Serum Proteomics Approach to Identify the ‘Hepatic Factor’ Causing Pulmonary Arteriovenous Malformations Post-Glenn Shunt

Circulation, Volume 150, Issue Suppl_1, Page A4145489-A4145489, November 12, 2024. Introduction:Pulmonary Arteriovenous Malformations (PAVMs) are a main surgical complication of second-stage palliative Glenn shunt for single ventricle. PAVMs lead to early mortality. Currently there is no available treatment as its physiopathology remains unknown.Hypothesis:This study hypothesizes that hepatic-derived factor causing PAVMs could be proteome-derived.Goals:To discern differences in proteomic profiles of patient-paired serum from superior vena cava (SVC) and hepatic vein (HV) as a preliminary approach to identify PAVM-related hepatic vein blood-enriched factors.Methods:Paired full blood samples were collected from SVC and HV origin during routine cardiac catheterization of patients with diverse cardiac congenital malformations from 0 to 1 years of age (n=3). Serum was extracted and high abundant proteins were depleted. Single-pot solid-phase-enhanced sample preparation method and trypsinization digestion coupled with label-free data-dependent acquisition liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis was performed. Subgroup differential expression analysis by abundance ratio (SVC/HV) (Adj. P-Value

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Novembre 2024

Abstract 4144388: Impact of Left Atrial Myopathy and Post-Ablation Remodeling on Quality of Life: A DECAAF II Subanalysis

Circulation, Volume 150, Issue Suppl_1, Page A4144388-A4144388, November 12, 2024. Background:Atrial fibrillation (AF) is associated with adverse remodeling of the left atrium (LA). The impact of the extent of atrial myopathy and post-ablation remodeling on quality-of-life (QoL) outcomes have not been studied.Objective:The aim of our study was to investigate the association between atrial myopathy and post-ablation remodeling on quality-of-life outcomes in patients with persistent AF.Methods:We conducted an analysis of DECAAF II participants who underwent late-gadolinium enhancement MRI (LGE-MRI) before and after AF ablation. We assessed atrial myopathy and post-ablation atrial remodeling, scar formation, and fibrosis coverage with ablation. QoL metrics were assessed using the Short Form Survey (SF-36) and Atrial Fibrillation Severity Scale (AFSS). Uni- and multivariable regression models were developed for this analysis.Results:613 patients with persistent AF were included in our analyses. At baseline, AFSS burden and total AFSS score were 18.94±7.35 and 12.24±8.17, respectively. Following ablation, all QoL and AFSS metrics improved in both the pulmonary vein isolation (PVI) and MRI-guided fibrosis ablation groups. On average, one unit of post-ablation reduction in left atrial volume index (LAVI) was associated with an improvement of 0.085 in total AFSS score (p=0.001), 0.01 in shortness of breath with activity (p

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Novembre 2024

Abstract 4146872: Analysis of 30-Day Readmission Rates and Costs Post-Heart Transplant: A 12-Year Retrospective Study Using Nationwide Readmission Database(NRD) : 2010-2021

Circulation, Volume 150, Issue Suppl_1, Page A4146872-A4146872, November 12, 2024. Introduction:Increased prevalence and incidence of heart failure has resulted in a significant rise in the number of patients progressing to advanced heart failure (AHF). Heart transplant improves morbidity and mortality in patients with heart failure refractory to medical therapy. We examined resource utilization as measured in 30-day readmission in a contemporary population utilizing the NRD database.Aim:We conducted a thorough analysis to identify trends in 30-day readmissions of HTs and analyze the associated costs.Methods:Using the National Readmission Database from 2010 to 2021, the study focused on new HT recipients. We evaluated various parameters, including readmission rates and the costs associated with 30-day readmissions. Patients aged

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Novembre 2024