Circulation, Volume 150, Issue Suppl_1, Page A4145263-A4145263, November 12, 2024. Introduction:Post-myocardial infarction (MI) pericarditis, particularly after percutaneous coronary intervention (PCI), presents with distinct clinical, laboratory, and electrocardiographic features. Despite its unique presentation, no dedicated diagnostic tools exist for this condition in the post-PCI setting, highlighting the need for a tailored approach. This study aims to develop and validate the first comprehensive clinical scoring system specifically designed to accurately diagnose post-MI pericarditis following PCI, utilizing data available at admission.Methods:In this diagnostic case-control study, we compared 60 patients with confirmed post-PCI pericarditis (verified by echocardiography) from our PCI Registry with 120 control patients with various diagnoses from our hospital database. We evaluated 26 potential predictors, including clinical characteristics, chest pain descriptors, and additional diagnostic tests. Independent predictors for the scoring model were identified using stepwise logistic regression.Results:Among the 17 initial variables associated with pericarditis, five independent predictors were identified: age, chest pain exacerbation with thoracic movement, rising troponin levels, diffuse ST-segment elevation, and C-reactive protein levels. These predictors were incorporated into a scoring system based on their regression coefficients. The model demonstrated excellent discrimination, with a C-statistic of 0.97 (95% CI: 0.93-1.0). A score above 6 points yielded a sensitivity of 95% (95% CI: 85-100) and specificity of 86% (95% CI: 78-93), with positive and negative likelihood ratios of 7.2 (95% CI: 4.2-12) and 0.05 (95% CI: 0.01-0.2), respectively, Figure 1.Conclusion:We have developed the first multivariate scoring system specifically designed to identify post-MI pericarditis in patients undergoing PCI. Its promising accuracy has the potential to enhance early recognition, streamline diagnostic processes, and ultimately improve patient outcomes.
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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
Abstract 4142266: Long-term Outcomes and Predictors of Recurrence in Atrial Arrhythmia Ablations Post-Fontan Procedure: A Retrospective Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4142266-A4142266, November 12, 2024. Introduction:Supraventricular tachycardia (SVT) is common and poorly tolerated in patients who have undergone Fontan procedure. Recurrence rates after catheter ablation in these patients are high. Recent data on the outcomes of SVT ablation and the predictors of recurrence in this population is lacking.Objective:Our study aimed to characterize clinical variables in patients with a Fontan undergoing EP ablation, investigate long-term outcomes, and determine factors that are associated with recurrence.Methods: Charts of patients who had undergone Fontan procedure and underwent SVT ablation between January 1, 1995, and October 1, 2023, at a tertiary care center were reviewed. Demographic, clinical, and outcome variables over 5 years were compared between patients with and without SVT recurrence.Results:Mean age of 25 patients (56% male) at time of SVT ablation was 31.5 ± 7.2 years. Ablation success rate was 92%. Recurrence occurred in 12 (48%) patients, with 7 (28%) requiring repeat ablations repeat within 5 years. Rate of recurrence did not differ between those who had the procedure before or after 2018. During the 5-year follow up period, 13 (59%) patients with follow up had cardiovascular (CV) hospitalization and 1 patient died. Atrial Tachycardia (70%) and Typical Atrial Flutter (65%) were the most common SVTs ablated. A trans-baffle puncture during the ablation was performed in 6 (23%) patients. Tricuspid atresia and elevated BNP levels were associated with increased risk of SVT recurrence (Table).Conclusion:Recurrence and cardiac hospitalization rates after SVT ablation in this population remain high. This study underscores the need for risk stratification in patients with Fontan physiology undergoing SVT ablation and informs future research directions for enhancing ablation outcomes.
Abstract Su1202: The utility of post cardiac arrest temperature control protocol according to the severity of hypoxic encephalopathy based on amplitude-integrated electroencephalography findings
Circulation, Volume 150, Issue Suppl_1, Page ASu1202-ASu1202, November 12, 2024. Introduction:The TTM2 trial showed that active fever prevention below 37.5°C and hypothermia at 33°C had similar outcomes in out-of-hospital post cardiac arrest patients. However, the patients in the trial had mild hypoxic encephalopathy, and the effects of hypothermia may vary with its severity. We previously reported that amplitude-integrated electroencephalography (aEEG) findings after the return of spontaneous circulation can be used to categorize the severity of hypoxic encephalopathy (Crit Care. 2018;22:226). In September 2022, we adopted a new temperature control protocol wherein the target temperature was set based on aEEG findings. This study examined changes in outcomes before and after implementing this new protocol.Methods:We assessed out-of-hospital cardiac arrest patients who received post cardiac arrest care in our emergency intensive care unit between March 2021 and February 2024. We divided the patients into two groups: before (B) and after (A) the introduction of the new protocol. We classified the patients into categories 1 (C1) to 4 (C4) based on the severity of hypoxic encephalopathy (Figure 1). All patients in group B were treated with hypothermia at 34°C. In group A, patients in C1 were treated with active fever prevention, and those in C2–C4 received hypothermia at 34°C (Figure 2). Primary outcome was favorable neurological outcomes (cerebral performance categories of 1 or 2) at hospital discharge. Secondary outcome was the duration of mechanical ventilation.Results:A total of 160 patients were included. The median age was 62 years and 105 (66%) patients had cardiac etiology. Fifty-five (34%) patients underwent extracorporeal cardiopulmonary resuscitation. The median cardiac arrest time was 29 min. Groups B and A comprised 57 and 103 patients, respectively. C1 category comprised 20 and 28 patients in groups B and A, respectively. The rate of favorable neurological outcomes was 35% in both B and A groups (p=1.00). Regarding C1 patients, the rates were 90% and 86% in B and A groups (p=1.00). Median duration of mechanical ventilation was 5 and 3 days in group B and A, respectively (p=0.11).Conclusion:Neurological outcomes before and after introducing the new protocol were similar. Management of patients with mild hypoxic encephalopathy can be simplified with active fever prevention. A temperature control protocol based on the severity of hypoxic encephalopathy using aEEG findings is feasible for emergency physicians.
Abstract 4135178: Short Term Outcomes Of Transcatheter Tricuspid Valve Interventions On Post-Procedural Length Of Hospital Stay, Readmissions For Heart Failure And Procedure Success If An Intracardiac Device Is Present: A Systematic Review And Meta-Analysis In A New Era Of Tricuspid Interventions
Circulation, Volume 150, Issue Suppl_1, Page A4135178-A4135178, November 12, 2024. Background:Tricuspid regurgitation (TR) is no longer considered forgotten. Transcatheter tricuspid valve repair/replacement (TVRR) has become widely accepted as gauged by clinical outcomes. FDA approved two tricuspid valve devices for the purpose of improving quality of life and not necessarily to improve TR severity. We aim to support evidence-based use of TVRR, by summarizing the latest evidence on the clinical effectiveness in terms of post-procedural length of hospital stay, readmissions for heart failure and procedure success if an Intracardiac device is present.Methods:We searched Pubmed, Embase and Cochrane databases and performed a meta-analysis of the included cohort studies using a fixed-effects model. Studies were excluded if they did not present an outcome in each intervention group or did not have enough information required for continuous data comparison. We performed a meta-analysis of hazard ratio (HR) for two outcomes and odds ratio (OR) for one outcome using the random effects model to remove inconsistency and compared the results with fixed effects model. The compared findings of both methods were similar. The variables used for analysis were number of events in exposure group and total amount of events. All data analyses were performed using MedCalc® Statistical Software version 22.023.Results:Of 161 potentially relevant studies, 8 retrospective studies with a total of 1,717 patients were included in the meta-analysis. Procedure (TVRR) success was associated with fewer readmissions for heart failure in all three studies included in the analysis of pooled HR (HR = 0.46, 95% confidence interval [CI]: 0.33 – 0.63, p
Abstract 4147346: Efficacy of OCT versus angiography in post-procedural lesions complications after percutaneous coronary intervention with drug-stent implementations: A systematic review and meta-analysis
Circulation, Volume 150, Issue Suppl_1, Page A4147346-A4147346, November 12, 2024. Background:Although recent studies have suggested the advantages of utilizing optical coherence tomography (OCT) for image guidance during percutaneous coronary intervention (PCI) with drug-eluting stent implantation over conventional angiography, the specific impact on post-procedural lesion complications has remained uncertain. To address this gap, we conducted an updated systematic review and meta-analysis focusing on post-procedural lesion complications associated with OCT-guided versus angiography-guided procedures in lesions undergoing PCI with drug-eluting stent implementation.Methods:We searched systematically through Pubmed, Embase, and Cochrane for randomized controlled trials(RCTs), which included lesions undergoing PCI and drug-stent deployment guided by OCTversus angiography. Our primary outcome of interest was (1) stent malposition under OCT analysis. We also included the following secondary outcome: (2) dissections under OCT analysis. We excluded studies that did not use OCT imaging to analyze post-procedure lesions. Risk Ratios(RRs) with 95% confidence interval (CI) were pooled across studies using a random effect model.Results:Five RCTs comprising 3,266 lesions undergoing OCT or Angio PCI-guided and drug stent implementation were included, of whom 1,549(48,34%) underwent OCT. The number of moderate-severe calcified lesions was 370 (11.33%). Our results show a significant association with decreased stent malposition risk in the OCT group, showed a significant decrease in post-procedure risk regarding stent malpositioning ( RR: 0.80; 95% CI: 0.75-0.84; P
Abstract 4135273: Frailty increases the risk of in-hospital mortality and post-procedural complications in patients undergoing Cardiac Implantable Electronic Devices placement
Circulation, Volume 150, Issue Suppl_1, Page A4135273-A4135273, November 12, 2024. Background:Heart failure with reduced ejection fraction (HFrEF) often necessitates the use of cardiac implantable electronic devices (CIED) such as cardiac resynchronization therapy defibrillators (CRT-D) or implantable cardioverter-defibrillators (ICD). These devices are proven to reduce mortality, prevent hospitalizations, and improve symptoms and quality of life. Frailty, characterized by an age-associated decline in physiological reserve, significantly impacts outcomes in these patients. This study uses the Hospital Frailty Risk Score (HFRS) to assess the effect of frailty on mortality and post-procedural complications in HFrEF patients undergoing CIED implantation.Hypothesis:Frail patients with HFrEF have worse in-hospital outcomes after CIED placementMethods:We conducted a retrospective cohort study using the 2020 National Inpatient Sample database from the Healthcare Utilization Project. Our population included patients aged 18 years or older with HFrEF who underwent CRT-D or ICD placement, identified using ICD-10 procedure codes. The primary risk factor was frailty, classified by an HFRS score of ≥5 (frail) or
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.
Abstract 4125252: Pre-Hematopoietic Stem Cell Transplantation Echocardiographic Indices and Post-Transplant Cardiovascular Outcomes
Circulation, Volume 150, Issue Suppl_1, Page A4125252-A4125252, November 12, 2024. Introduction:Hematopoietic stem cell transplantation (HSCT) is associated with adverse cardiovascular (CV) events including the development of heart failure (HF) and arrythmias. While transthoracic echocardiogram (TTE) is routinely obtained prior to HSCT, its role in predicting the incidence of HSCT related CV events is poorly understood.Methods:We used data from the Cardiovascular Registry in Bone Marrow Transplantation (CARE-BMT) study, a multicenter observational study of adult patients (aged ≥18 years) who underwent autologous/allogeneic HSCT for malignant or nonmalignant bone marrow disorders at the University of Michigan Health System (UMHS) and Rush University Medical Center from 2008-2019. In this analysis, we included patients from UMHS with a baseline TTE. Data on pre-HSCT TTE parameters and post-HSCT CV outcomes were collected through manual chart review. Left ventricular (LV) function and dimensions were categorized into normal, mildly abnormal, and moderately/severely abnormal based on American Society of Echocardiography guidelines. The primary outcomes were new-onset HF and atrial fibrillation/flutter post-HSCT. Analyses were conducted using a Fine-Gray model adjusted for the pre-HSCT CARE-BMT CV risk score.Results:Of the 2071 patients (mean age at HSCT 55.5+12.9 years; 59.5% male) with a pre-HSCT TTE (median 25 days pre-HSCT), 116 (5.6%) and 128 (6.2%) patients experienced HF and atrial fibrillation/flutter, respectively, over a median period of 2.2 years. Greater abnormalities in left ventricular internal diameter at end-diastole (LVIDd) and end-systole (LVIDs) were linearly associated with a higher risk of HF (P-trend 0.018 and 0.004, respectively) (Table). Similarly, moderately/severely abnormal LVIDd was associated with a 2.41-fold (95% CI: 1.07, 5.43) increase in risk of atrial fibrillation/flutter (Table). Pre-HSCT ejection fraction (EF) was not associated with either endpoint.Conclusion:LV dilation, even when mild, was notably associated with increased risk of developing new HF or atrial arrythmias post-HSCT, regardless of EF. Whether evidence of LV dilation should prompt the initiation of guideline directed medical therapy to minimize the risk of incident HF warrants further study.
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
Abstract Or109: Systemic Nicotinamide Mononucleotide Administration for Post-cardiac Arrest Brain Injury
Circulation, Volume 150, Issue Suppl_1, Page AOr109-AOr109, November 12, 2024. Background:Nicotinamide mononucleotide (NMN), a precursor of nicotinamide adenine dinucleotide (NAD+), has been shown to increase NAD+levels, reduce inflammation, and improve short-term survival in a rodent model of hemorrhagic shock. NAD+levels decrease after cardiac arrest (CA), but the effect of NMN on outcomes after CA remains undefined.Hypothesis:NMN administration increases NAD+content in the brain, reduces systemic inflammation, and improves outcomes after CA.Aims:This study aimed to investigate the effects of systemic NMN administration on neurological function, survival, and systemic inflammation after CA.Methods:In a murine model of CA, asystole was induced using potassium chloride. After 10 minutes of CA, mice were resuscitated with continuous epinephrine injections. Mice were randomly assigned to the NMN group (60 mg/kg body weight i.p.) or the control group (normal saline i.p.) 1.5 minutes after the return of spontaneous circulation (ROSC). The same treatment was repeated at 24 and 48 hours after CA. Neurological function score (on a scale from 0 to 12) at 48 hours post-CA and 7-day survival were compared between the NMN and control groups. Brain NAD+levels were measured 30 minutes post-ROSC. Plasma cytokine levels (IL-6 and TNF-α) were measured 2 hours post-ROSC.Results:Brain NAD+levels significantly increased 30 minutes post-ROSC in the NMN group compared to the control group (186 ± 15 pg/mg tissue and 131 ± 14 pg/mg tissue, respectively; P=0.02). NMN significantly improved neurological function score at 48 hours post-CA (NMN group median 12 [9–12] vs. control group 8 [4–11]; P=0.03). Moreover, NMN improved survival rate up to 7 days post-CA (NMN group 61.1% [11/18] vs. control group 22.2% [4/18]; P=0.03). Mean arterial pressure tended to be higher in the NMN group, although the difference was not significant (NMN group 113.8 ± 2.1 mmHg vs. control group 107.8 ± 2.9 mmHg; P=0.08). NMN showed a trend toward decreased IL-6 (NMN group 52.7 ± 14.3 pg/ml vs. control group 114.6 ± 33.3 pg/ml; P=0.15) and TNF-α (NMN group 6.9 ± 1.2 pg/ml vs. control group 11.7 ± 2.3 pg/ml; P=0.12).Conclusions:Systemic administration of NMN post-CA increased brain NAD+levels and improved neurological function and survival. NMN also showed a trend toward reduced systemic inflammation. NMN is a promising approach to improve outcomes after CA.
Abstract 4146071: Post Transcatheter Aortic Valve Replacement outcomes among patients with Cardiac Amyloidosis and Aortic Stenosis.
Circulation, Volume 150, Issue Suppl_1, Page A4146071-A4146071, November 12, 2024. Background:Aortic stenosis (AS) and cardiac amyloidosis (CA) frequently coexist. There is a paucity of data on whether the presence of CA impacts post-procedural and clinical outcomes after transcatheter aortic valve replacement (TAVR) among AS patients.Objective:In this analysis, we sought to leverage data from the TriNeTX Global Collaborative Network to determine the impact of CA on mortality and cardiovascular/ischemic outcomes at 1-month and 1-year post-TAVR.Methods:The TriNeTX Global Collaborative Network research database was used to identify patients aged ≥18 years from January 2012 to April 2023. Patients with AS were categorized into two groups: one with CA and having TAVR, and a control group with non CA group having TAVR. Patients were followed for 1 month and 1 year respectively. Propensity score-matched analysis (PSM) (1:1) was performed on age, gender, race, hypertension, diabetes mellitus, and chronic kidney disease. Primary outcome was all-cause mortality (ACM), while secondary outcomes were acute myocardial infarction (AMI), ischemic stroke, ventricular arrhythmias, and major adverse cardiovascular event (composite of ACM, ischemic stroke and AMI).Results:After 1:1 PSM, the study cohort comprised of 351 patients in the CA group and 351 patients in the non-CA group. The mean age of patients in CA and non-CA groups was 79.6 and 79.5 years. PSM analysis showed that ACM was comparable between CA and non-CA group after 1-month (RR, 1.00 (95%CI: 0.42-2.39),P=0.98), and after 1-year follow up (RR, 0.92 (95%CI: 0.59-1.44),P=0.736). AMI was also found comparable between the two cohorts, both after 1-month (RR, 1.189 (95%CI: 0.503-2.811),P=0.693), and after 1-year (RR, 1.288 (95%CI: 0.598-2.773),P=0.516). Similar trends were found for ischemic stroke, ventricular arrhythmias and MACE both after 1-month and 1-year follow up.Conclusion:This study shows that TAVR can be safe to be considered among cardiac amyloidosis patients with aortic stenosis
Abstract 4125157: Efficacy of Adding Sodium-Glucose Co-Transporter 2 Inhibitor versus Standard Therapy Alone in Post-Percutaneous Coronary Intervention Patients: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4125157-A4125157, November 12, 2024. Background:Recent evidence suggests that sodium-glucose cotransporter-2 inhibitors (SGLT2-i) may improve outcomes in patients with coronary artery disease (CAD) through various physiological pathways. However, their impact on patients who have undergone percutaneous coronary intervention (PCI) is not well established. This meta-analysis aims to evaluate the effectiveness of additive SGLT2 inhibitors versus standard therapy alone in patients with CAD after PCI.Methods:A systematic search was conducted across the Medline, Embase, and Cochrane Library databases for randomized controlled trials (RCTs) and observational studies that compared the addition of SGLT2 inhibitors to standard therapy versus standard therapy alone in patients post-PCI. The outcomes analyzed were Major Adverse Cardiovascular Events (MACE), all-cause death, cardiovascular death, recurrent acute myocardial infarction (AMI), nonfatal stroke, revascularization, and hospitalization for heart failure (HF).Results:A total of 7 studies met the inclusion criteria, encompassing a total of 11,800 individuals (5,004 on SGLT2-i and 6,796 non-SGLT2-i; mean age of 62.7 years; 28% women; 95% diabetic patients). SGLT2 inhibitors significantly reduced the risk of all-cause mortality (RR 0.6, 95% CI: 0.5-0.72, p
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
Abstract 4138507: Uncovering Risk Factors for Myocarditis and Cardiac Arrhythmia in Youth Post-SARS-CoV-2 Infection: Insights from the N3C Database and Advanced Machine Learning
Circulation, Volume 150, Issue Suppl_1, Page A4138507-A4138507, November 12, 2024. Background:SARS-CoV2 infection has been associated with cardiovascular consequences, including myocarditis and cardiac arrhythmias. Myocarditis secondary to SARS-CoV2 infection and cardiac arrhythmias may often go unrecognized and can present with late and nonspecific symptoms. Predicting those at risk allows for prompt treatment and prevention of their potentially life-threatening consequences.Methods:The National COVID Cohort Collaborative (N3C) database was used to identify patients aged 0-30 years with COVID-19 index date between 1/1/2020 and 3/31/2022, whose sites provided data for at least six months beyond the index date. Outcomes included myocarditis and new arrythmias within 6 months of the index visit. Patients with known cardiac comorbidities were excluded. Predictors included gender, race, COVID severity as an ordinal scale, vaccination status, clinical comorbidities, and Area Deprivation Index (ADI). The data were stratified by age groups (0-4, 5-17, 18-30). Random forest models were used for data analysis and SHapley Additive exPlanations (SHAP) method was applied to optimize results. These analyses were conducted using the NCATS N3C Data Enclave.Results:Of the 1,487,741 patients in our study population, 4,105 (0.28%) had the measured outcomes; 404 had myocarditis only, 3,634 had arrhythmia only and 67 had both. Severity of COVID (SHAP 0.2344 for 0-4 years, 0.2114 for 5-17, 0.1370 for 18-30) was identified as the most important risk factor for de-novo myocarditis and arrhythmias overall. Increase in ADI (indicating lower socioeconomic status) was the second most important risk factor for the 0-4 and 5-17 age groups (SHAP: 0.0370, 0.0223). Among the 18-30 age group, race (SHAP 0.0321) and gender (SHAP 0.0289) were the second and third most important risk factors, with White and Black patients more likely to develop an event and Hispanic patients less likely. Women were less likely to develop a cardiac outcome than men.Conclusion:The severity of COVID was identified as the most important risk factor for the occurrence of myocarditis or cardiac arrhythmia within 6 months of infection. ADI, race, and gender were also identified as important, though less influential, risk factors.
Abstract 4120229: Shift in body mass index category and associated cardiometabolic risk factors: a post hoc analysis from the SURMOUNT-4 trial
Circulation, Volume 150, Issue Suppl_1, Page A4120229-A4120229, November 12, 2024. Background:In SURMOUNT-4, participants with obesity demonstrated a mean weight reduction of 21% during the 36-week lead-in with the maximum tolerated dose (MTD) of tirzepatide (TZP). During the 52-week double-blind period, participants who switched to placebo (PBO) experienced a 14% weight regain, while those who continued TZP achieved an additional 6% weight reduction. This post hoc analysis assessed whether participants who shifted to a lower BMI category had improved cardiometabolic factors.Methods:Shift in BMI category (