Circulation, Volume 150, Issue Suppl_1, Page A4144970-A4144970, November 12, 2024. Introduction:Chronic total coronary occlusion (CTO) management remains a challenge. Several studies have reported the benefits of percutaneous coronary intervention (PCI) in CTO. However, the outcomes of PCI vs optimal medical therapy (OMT) are still controversial. We conducted an extensive review and meta-analysis to compare the clinical outcomes between PCI and OMT in CTO.Methods:We comprehensively searched the databases of MEDLINE and EMBASE from inception to May 2024. Included studies were published cohort (prospective or retrospective) with propensity score matching analysis and randomized trials that reported all-cause death, cardiac death, and myocardial infarction (MI) with PCI and OMT in CTO patients. Data from each study were combined using the random-effects, generic inverse variance method of DerSimonian and Laird to calculate odd ratios and 95% confidence intervals.Results:Sixteen studies, 6 randomized controlled trials (RCTs) and 11 observational studies with propensity score with matching (PSMs), were included in this meta-analysis involving 8,316 CTO patients (4,332 underwent PCI and 4,084 received OMT). In the overall analysis, all-cause death, cardiac death, and MI were significantly reduced in PCI compared to OMT group, respectively ([OR] 0.65, 95% CI 0.55-0.76, I2=0.0%, p
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Abstract 4145162: Empagliflozin Effect on Left Cardiac Parameters in Acute Coronary Syndrome: A Systematic Review and Meta-analysis of Randomized Controlled Trials
Circulation, Volume 150, Issue Suppl_1, Page A4145162-A4145162, November 12, 2024. Background:Acute coronary syndrome (ACS) poses a significant global health burden despite advancements in its management. Sodium-glucose cotransporter 2 (SGLT2) inhibitors, primarily used in type 2 diabetes mellitus (T2DM), have gained recent consideration as potential agents for ACS management due to their cardiovascular benefits beyond glycemic control. This study aimed to assess the effects of empagliflozin on left cardiac parameters in ACS patients.Methods:PubMed, Cochrane, Scopus, and Web of Science were searched thoroughly to identify relevant randomized controlled trials (RCTs) until June 1st, 2024. Continuous data were pooled using mean difference (MD) with a 95% confidence interval (CI) using R (Version 4.3).Results:Four RCTs involving 701 patients were included. Compared to placebo, empagliflozin significantly reduced left ventricular end-systolic volume index (LVESVi) (MD: -2.38, 95% CI: -3.95 to -0.80, p = 0.0032), left ventricular mass index (LVMi) (MD: -2.76, 95% CI: -4.95 to -0.56, p = 0.0137), and left ventricular filling pressure (E/e’) (MD: -0.59, 95% CI: -1.07 to -0.10, p = 0.0189). However, empagliflozin treatment did not yield a statistically significant change in left ventricular ejection fraction (LVEF) (MD: 1.21, 95% CI: -0.05 to 2.48, p = 0.0603), nor a significant change in left ventricular end-diastolic volume (LVEDV) (MD: -4.49, 95% CI: -14.24 to 5.26, p = 0.37), left ventricular end-systolic volume (LVESV) (MD: -5.19, 95% CI: -10.77 to 0.39, p = 0.0682), and left ventricular end-diastolic volume index (LVEDVi) (MD: -2.20, 95% CI: -4.59 to 0.19, p = 0.0718).Conclusion:Empagliflozin provides favorable effects on left cardiac structural parameters in ACS patients, as it was associated with reduced LVESVi, LVMi, and E/e’. This suggests a potential role for SGLT2 inhibitors as adjunctive therapy in ACS management, warranting further investigation into their mechanisms and long-term clinical outcomes.
Abstract 4131381: Comparison of Dietary Macronutrient Interventions for Weight and Cardiovascular Risk Factor Reduction: A Systematic Review and Network Meta-analysis of Randomized Controlled Trial
Circulation, Volume 150, Issue Suppl_1, Page A4131381-A4131381, November 12, 2024. Background:Dietary interventions play a crucial role in weight management and reducing cardiovascular risk factors. Our study aims to compare the effectiveness of four dietary macronutrient interventions on weight loss and cardiovascular (CV) risk factor reduction through a systematic review and network meta-analysis.Methods:We conducted a comprehensive literature search on PubMed, Scopus, Embase, and Cochrane Library up till May 2024 to identify randomized controlled trials (RCTs) comparing four macronutrient dietary interventions including Mediterranean Diet (MD), Keto, Dietary Approaches to Stop Hypertension (DASH), and Intermittent Fasting (IF) with study period ≥ 6 months or 24 weeks. The primary outcomes of interest were weight loss, systolic blood pressure (SBP), Diastolic blood pressure (DBP), Body Mass Index (BMI), High density lipoprotein (HDL), Low density Lipoprotein (LDL), cholesterol levels and C-reactive protein (CRP) levels. Outcomes were reported as standard mean difference (SMD).Results:Our analysis identified 50 studies enrolling 5368 patients (MD=3554; DASH=838; Keto=206; IF=770). Regarding BP outcome, MD and DASH had significant reduction in SBP and DBP respectively (MD [SBP]: -0.76 mmHg vs DASH [DBP]: -1.92 mmHg) respectively. In contrast, IF showed a significant rise in SBP (0.87). MD participants also had significant weight loss (-1.06 kg) and a moderate decrease in BMI (-0.79) when compared with other diets. Furthermore, IF, keto, and MD showed moderate increase in HDL levels (0.61, 0.77 and 0.33) respectively. In contrast, DASH resulted in a moderate decline in HDL levels (-0.92). IF and MD resulted in modest decline in LDL levels (-0.45 and -0.42) respectively. In contrast, Keto demonstrated non-significant rise in LDL (0.35). DASH showed a significant decrease in triglycerides (-3.02). Lastly, MD demonstrated a significant reduction in CRP (-0.89).Conclusions:MD and DASH were superior to other dietary interventions in terms of weight loss and CV risk factors. Further research is required to tailor specific types of dietary interventions and assess their long-term efficacy on weight loss and CV risk reduction.
Abstract 4139982: Ventricular Pre-excitation Related Cardiac Dysfunction Secondary to Accessory Pathway in the Absence of Tachyarrhythmia: A Systematic Review
Circulation, Volume 150, Issue Suppl_1, Page A4139982-A4139982, November 12, 2024. INTRODUCTION:Asynchronous ventricular pre-excitation over an accessory pathway (AP) in the absence of tachyarrhythmia is sometimes reported to cause left ventricular dysfunction (LVD).AIMS:To analyze the pathophysiological mechanism, role of AP location, evaluation modalities, and management of pre-excitation-related LVD.Methods:PubMed and Google Scholar databases were searched for reports on pre-excitation-induced LVD regardless of patient’s age, and publication date.Results:Out of 11,775 citations retrieved, 53 met inclusion criteria, including 41 case reports and 12 observational studies with 611 total participants, age range of 1.14-60.8 years, and M: F of 325:265 (Table). At initial presentation, acute HF was common in pediatric patients, with poor response to medical therapy; while adults were more often asymptomatic. Right septal and right free wall were the commonest APs location associated with LVD. Amiodarone and propafenone achieved improvement in HF status by causing AP block and restoring ventricular synchrony in pediatric patients deemed unfit for catheter ablation (CA). Septal dyskinesia (SD) and intra-LV dyssynchrony (ILVD) were the key pathophysiological mechanisms causing LVD, leading to regional myocardial wall thinning and hypotrophy. Two-dimensional strain echocardiography (2D-STE) was used in quantifying regional myocardial strain, noninvasive localization of APs, and assessing therapeutic response to CA. Systolic intervals ratio [(pre-ejection period (PEP)/LV ejection time (LVET)] assessed via continuous Doppler detected derangement in LVEF with high accuracy. Preexcitation-induced myocardial changes were usually reversible after CA of APs with recovery of LV function. However, irreversible myocardial tissue damage even after CA was reported, especially in adults. Resolution of ILVD and SD in the immediate post-CA period was predictive of response to CA.Conclusions:We report the largest aggregation of data regarding preexcitation-induced LV dysfunction. Long-term asynchronous activation of the LV via an AP, even without tachyarrhythmias, can causes adverse myocardial changes leading to cardiac dysfunction, especially in children with right-sided APs. 2D-STE and systolic intervals (PEP/LVET) are efficient tools for evaluation. Ablation of APs usually restores cardiac function largely; however, irreversible myocardial fibrosis can ensue. Based on these data, early CA of the APs associated with LV dysfunction is, therefore, recommended.
Abstract 4142988: Effectiveness of Additive Cardiac Computed Tomography Angiography for Pre-procedural Planning of Left Atrial Appendage Occlusion: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4142988-A4142988, November 12, 2024. Introduction:The latest expert consensus on catheter-based Left Atrial Appendage Occlusion (LAAO) suggests considering either transesophageal echocardiography (TEE) alone or the addition of Cardiac Computed Tomography Angiography (CCTA) for pre-procedural planning. However, evidence comparing the effectiveness of adding CCTA to regular TEE planning on procedural success is limited.Methods:We aimed to perform a systematic review and meta-analysis to determine the impact of adding CCTA to regular TEE for pre-procedural planning in patients undergoing LAAO. We systematically searched Cochrane, Embase, and Medline for observational studies and randomized controlled trials (RCTs) comparing TEE alone to TEE with the addition of CCTA. The primary endpoint was procedural success. Risk ratios (RRs) with 95% confidence intervals (CIs) were pooled across studies using a random-effects model.Results:Four studies were included in our meta-analysis, three of which were RCTs and one observational study, comprising a total of 824 patients, of whom 496 (60.2%) underwent additional CCTA. In the pooled analysis, procedural success was higher in the group with added CCTA (RR 1.10; 95% CI 1.01 – 1.19; p=0.022; I2=52%). A subgroup analysis of RCTs alone confirmed these findings, with a slightly higher magnitude of effect in benefit of the addition of CCTA, and with lower heterogeneity (RR 1.15; 95% CI: 1.06 – 1.25; I2 = 0%).Conclusions:In this meta-analysis comparing TEE alone vs TEE with the addition of CCTA for preprocedural planning of LAAO, the addition of CCTA was associated with a higher procedural success rate, and this finding was confirmed in a subgroup analysis of randomized data.
Abstract 4117365: Effect Of Renal Denervation In Combination With Cardiac Ablation On The Recurrence Of Atrial Fibrillation: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4117365-A4117365, November 12, 2024. Background:Atrial fibrillation(AF) is the most common cardiac arrhythmia, affecting millions globally. Despite various treatments, recurrence remains high, especially among those with drug-resistant hypertension.Aim:To evaluate the efficacy of combining Renal Denervation and Cardiac Ablation compared to Cardiac Ablation Alone in reducing AF recurrence.Methods:A systematic review and meta-analysis were conducted following the PRISMA-2020 guidelines, A search for randomized controlled clinical trials was carried out in PubMed, EMBASE, the Cochrane Central Register of Controlled Trials (CENTRAL), Scopus, and ScienceDirect until March 2024. Specifically, about adult patients aged 18 years and above diagnosed with AF and drug-resistant hypertension undergoing renal denervation and or cardiac ablation. The primary outcome was the recurrence of AF. The secondary outcomes were effects on systolic blood pressure, diastolic blood pressure, cardiovascular structural changes, glomerular filtration rate (eGFR). In addition, periprocedural events and major complication events. Dichotomous outcomes were calculated using relative risk (RR) with 95% confidence interval (CI). For continuous variables, the results were shown considering the mean difference (MD) and standard deviation with 95% CI.Results:From 409 studies identified, 8 studies and 695 patients were included. Meta-analysis showed a significant reduction in atrial fibrillation recurrence with the combination therapy (HR 0.66 [95% CI=0.55 – 0.79], p=0.00001). Blood pressure outcomes were superior in the combination group, with reductions in both systolic (MD = -9.66 mmHg [95% CI: -13.89, -5.42], p=0.00001) and diastolic pressures (MD = -7.09 mmHg [95% CI: -13.67, -0.50], p=0.003). Cardiovascular structural changes, such as left atrial size (RR 2.85 [95% CI: 2.13, 3.81], p=0.00001) and interventricular septal thickness (MD = -1.15 [95% CI: -1.85, -0.44], p=0.003), also favored the combination therapy. Kidney function, measured by eGFR was better preserved (MD = -10.34 [95% CI: -13.39, -7.28], p
Abstract 4138850: PASCAL versus MitraClip in mitral valve transcatheter edge-to-edge repair: A systematic review and meta-analysis.
Circulation, Volume 150, Issue Suppl_1, Page A4138850-A4138850, November 12, 2024. Introduction:Mitral regurgitation is the second most common valvular heart disease, it has a high prevelance in older patients, transcatheter mitral valve edge-to-edge repair has been introduced as an alternative treatment to mitral valve surgery especially in the elderly, MitraClip is used as a standard treatment for transcatheter mitral valve edge-to-edge repair (M-TEER). PASCAL has recently been used with minimal evidence comparing both of them.Aim:We aimed to compare the outcomes of both device systems on mitral regurgitation residuals and clinical outcomes.Methods:PubMed, Scopus, WOS, and Cochrane were retrieved from inception until May 2024 for relevant clinical studies that compared PASCAL to MitraClip approaches in M-TEER procedure and reported the primary outcome of interest, which was the grade of MR at follow-up. Other reported outcomes were technical success, Death from any cause, and reintervention, Dichotomous data were analyzed using OR and 95% CI with a fixed-effect model.Results:Seven studies were included with a total of 1834 patients. MR ≤ 2 at discharge was less with MitraClip (RR, 0.67, 95%CI [0.45 to 1]), and MR ≤ 2 at follow-up was less with MitraClip (RR, 0.84, 95% CI [0.64 to 1.1]), MR ≤ 1 at follow up was significantly less with MitraClip (RR 0.69, [0.56 to 0.85]). However, there were no significant differences in technical success, Death from any cause, or reintervention between the two systems used.Conclusion:MitraClip and PASCAL are similar in procedural success, with better outcomes for PASCAL regarding Mitral regurgitation grades after the procedure. The guide to proceed with MitraClip or PASCAL should be guided by mitral valve anatomy, the etiology of MR, and device-specific features. Also, Large-volume RCTs are warranted to validate the current findings.
Abstract 4139964: Evolving Baseline Risk in Patients With Transthyretin Amyloid Cardiomyopathy: A Systematic Literature Review of Clinical Trials
Circulation, Volume 150, Issue Suppl_1, Page A4139964-A4139964, November 12, 2024. Background:Transthyretin amyloid cardiomyopathy (ATTR-CM) is estimated to occur in 120,000 US adults and remains underdiagnosed. However, awareness of ATTR-CM has improved following the introduction of new diagnostic tools and disease-modifying treatments. Hence, patients (pts) enrolled in contemporary clinical trials could be at an earlier stage of the disease than pts in past clinical studies.Aim:To assess temporal trends in the baseline risk of pts with ATTR-CM enrolled in clinical trials.Methods:Embase, MEDLINE, CENTRAL, and conference websites were searched on November 23, 2023, for peer-reviewed articles and abstracts. Randomized and single-arm clinical trials examining treatments for ATTR-CM were included, and baseline characteristics and outcomes in pts treated with placebo (PBO) were compared across studies.Results:We reviewed 39 publications derived from 4 randomized and 4 single-arm trials. Studies enrolled pts between 2008 and 2021, although 1 study (INOCARD, 2022) did not report years of enrollment. Several baseline characteristics were comparable across studies, including sex, age, race/ethnicity, genotype, and troponin I level. NYHA class at baseline varied with year of enrollment, with fewer NYHA class III pts in recent trials (Figure). Recent trials also showed a trend toward lower NT-proBNP levels (medians ranging from 1911-3178 pg/mL) and higher eGFR levels (means ranging from 54.7-69.0 mL/min/1.73 m2). In PBO groups, all-cause mortality (ACM) rates at 12 months dropped from 9% in ATTR-ACT (enrolled 2013-2015) to 6.9% in ATTRibute-CM (enrolled 2019-2020) and 5.6% in APOLLO-B (enrolled 2019-2021); ACM rates at 30 months dropped from 42.9% in ATTR-ACT to 25.7% in ATTRibute-CM.Conclusions:This systematic review found that disease-modifying treatments and diagnostic advances have led to earlier diagnosis of pts with ATTR-CM. Recent clinical trials appear to have enrolled pts with a better prognosis. Comparisons of results across these trials are limited and should acknowledge the potential impact of variability in baseline risks among trial populations.
Abstract 4138603: Adult-onset Kawasaki Disease: An Updated Review of the English-Language Literature from 1980 Through 2023
Circulation, Volume 150, Issue Suppl_1, Page A4138603-A4138603, November 12, 2024. Introduction:Kawasaki disease (KD) is a pan-vasculitis that primarily affects children and rarely adults. Available data on adult-onset KD are based on case reports and case series, both of which are limited by small sizes. We aimed to characterize the epidemiology, presentation, hospital course, and outcomes of adult-onset KD published in the English literature from 1980 through 2023.Methods:We retrospectively reviewed and included published articles with a diagnosis of KD in patients age ≥18 years. We searched PubMed and Google scholar for case reports/series published in English using the keywords “adult”, “Kawasaki disease”, and “mucocutaneous lymph node syndrome”. We extracted data from individual articles onto an Excel spreadsheet for analysis. Outcomes of interest were the demographic characteristics of patients, clinical presentation and hospital course, management, and complications. Descriptive statistics were used to analyze the data.Results:A total of 137 patients from 29 countries were included in this study. The majority were male (90/137, 64.9%; M:F ratio 1.8) and the median age was 25 years (range, 18-68). The median time to clinical presentation was 5 days (range, 4-60). The main signs and symptoms were fever (95.7%), skin rash (92.9%), conjunctivitis (89.3%), extremity changes (84.3%), oral changes (85.7%), and cervical lymphadenopathy (73.7%). The majority of the patients had no co-morbidities (125/137, 91.2%). EKG changes were not reported in 48 patients (35%). In the remaining 89, 26 (29.2%) had normal EKG or sinus tachycardia, 9 (10.1%) had ST segment elevation, and 9 (10.1%) had arrythmias or abnormal EKGs. Pharmacotherapy included IVIG (80/137, 58.4%), Aspirin (105/137, 76.6%), steroids (31/137, 22.6%) and antibiotics (68/137, 49.6%). For complications, 18.2% (25/137) had aneurysms, 8% (11/137) had myocardial infarction, 10.9% (15/137) had myocarditis, 10% had pericarditis/pericardial effusion, and 10.9% (15/137) had KD shock syndrome. The median length of stay was 14 days (range, 1-60 days). Three patients (2%) died from KD.Conclusion:Adult-onset KD is rare and is associated with significant cardiovascular complications. Clinicians should have high index of suspicion for prompt diagnoses and initiate appropriate treatment to improve outcomes.
Abstract 4117690: Cardiac Rupture as a Life-Threatening Outcome of Takotsubo Syndrome: A Systematic Review.
Circulation, Volume 150, Issue Suppl_1, Page A4117690-A4117690, November 12, 2024. Background:Takotsubo syndrome is a reversible cause of heart failure; however, a low percentage of patients can develop serious complications, including cardiac rupture.Aims:Analyze case reports or case series of cardiac rupture in patients with Takotsubo syndrome, detailing patient characteristics to uncover risk factors and prognosis for this severe complication.Methods:We conducted a systematic search of MEDLINE and Embase databases to identify case reports or case series of patients with Takotsubo syndrome complicated by cardiac rupture, from inception to October 2023.Results:We identified 39 reported cases, including 44 subjects (40 females; 4 males) with a median age of 75 (IQR 71-82) years, of White/Caucasian (61%) or East Asian/Japanese (39%) ethnicity. An emotional trigger was present in 15 (34%) subjects and common admission symptoms were chest pain (35 [80%]) and dyspnea (14 [32%]). ST-segment elevation was present in 39 (93%) of 42 cases, with the anterior myocardial segments (37 [88%]) being the most compromised, followed by lateral (26 [62%]) and inferior (14 [33%]) segments. The mean left ventricular ejection fraction was 40±13% and an apical ballooning pattern was observed in all (100%) ventriculographies. The median time to cardiac rupture was 48 (5-120) hours since admission, with the left ventricular free wall (25 [57%]) being the most frequent site of perforation. Surgery treatment was attempted in 16 (36%) cases, and 28 (64%) patients did not survive (Figure).Conclusions:Cardiac rupture as a complication of Takotsubo syndrome is a rare clinical condition associated with high mortality. Elderly females, especially from White/Caucasian or East Asian/Japanese descent, presenting with ST-segment elevation in the anterior or lateral leads, and an apical ballooning pattern, are disproportionally affected. Additional studies with prospective collection of patient-level data are needed to better identify those at increased risk for cardiac rupture associated with Takotsubo syndrome and to address ways to improve mortality rates in this population.
Abstract 4140224: Conservative management of patent ductus arteriosus in preterm infants: a systematic review and meta-analysis of randomized controlled trials
Circulation, Volume 150, Issue Suppl_1, Page A4140224-A4140224, November 12, 2024. Background:In recent years, there has been a rise in the adoption of conservative approaches to managing patent ductus arteriosus (PDA) in preterm infants. Systematic appraisal of the clinical evidence supporting this approach is essential for guiding recommendations in clinical guidelines.Methods:A comprehensive search of MEDLINE (PubMed), Embase, the Cochrane Library, and ClinicalTrials.gov, spanning from inception to April 2024, was conducted to identify all relevant randomized controlled trials (RCTs) that evaluated conservative management of patent ductus arteriosus (PDA) in preterm infants. Conservative management was defined as approximately ≤25% open-label pharmacological treatment with ibuprofen, indomethacin, or paracetamol and/or ligation/endovascular closure. Our primary outcomes were the risk of all-cause mortality and bronchopulmonary dysplasia. We used RevMan 5.4 to pool risk ratios (RRs) under a random-effects model, ensuring a rigorous and reliable analysis.Results:Our review included 6 RCTs. There was no difference in the risk of mortality (RR 0.83; 95% CI: 0.64-1.08, I2= 0%) and BPD (RR 0.89; 95% CI: 0.76-1.03, I2= 22%) between the conservative management and active treatment groups. The rates of necrotizing enterocolitis, intraventricular hemorrhage, retinopathy of prematurity, sepsis, pulmonary hemorrhage, and the need for surgical ligation or transcatheter occlusion were similar between the two groups.Conclusions:The meta-analysis showed no difference in the risk of all-cause mortality, BPD, or other clinical outcomes between a strategy of conservative management compared to active treatment. These findings support a conservative approach for the management of PDA in preterm infants. Future studies should focus on cost-effectiveness analyses between the two approaches and investigate important subgroups, such as extremely preterm births.
Abstract 4139264: Outcomes Of Pulmonary Vein Isolation With Or Without Adjunctive Posterior Wall Isolation In Patients With Paroxysmal Atrial Fibrillation: A Systematic Review and Meta-Analysis
Circulation, Volume 150, Issue Suppl_1, Page A4139264-A4139264, November 12, 2024. Introduction:Pulmonary vein isolation (PVI) is a catheter ablation (CA) technique employed as a treatment strategy for atrial fibrillation in young patients or those who do not respond to medical therapy. Techniques for PVI include radiofrequency (RFA) ablation and balloon cryoablation. The left atrial posterior wall has been recognized as a significant anatomical area involved in the onset and persistence of atrial fibrillation (AF). However, the impact of additional posterior wall isolation (PWI) during PVI remains uncertain.Research Question:What are the outcomes of pulmonary vein isolation compared to pulmonary vein isolation with adjunctive posterior wall isolation in patients with paroxysmal atrial fibrillation?Goals:To determine the efficacy of adjunctive posterior wall isolation in treating persistent AF.Methods:A systematic literature search was conducted on various databases (Pubmed/Medline, EMBASE, Google Scholar, Scopus) from inception until March 2024, to include studies comparing outcomes of patients undergoing management of paroxysmal AF with either PVI + concurrent PWI versus only PVI. Observational studies and Randomized Controlled Trials were included. Review Manager (v 5.3) was used for pooled analysis of included studies employing risk ratio (RR) as the effect measure (4).Results:We conducted a random-effects meta-analysis, pooling data from 5 studies with a total of 2,441 patients. Our analysis revealed a significant improvement in AF recurrence for the cryoablation technique with PVI+PWI (RR=0.56, 95% CI: 0.41, 0.76, I2=0%, p=0.0002) but no significant result was found for PVI+PWI in RFA (RR=1.37, 95% CI: 0.87, 2.18, I2=0%, p=0.18) for AF. For the recurrence of all arrhythmias, the risk ratios for cryoablation and RFA are 0.60 (95% CI: 0.46, 0.78, I2=0%, p=0.0001) and 1.17 (95% CI: 0.83, 1.65, I2=0%, p=0.37) respectively, significant in the case of cryoablation and non-significant for RFA.Conclusion:Concurrent PWI with PVI with the cryoablation technique in patients for the management of paroxysmal AF reduces the risk of recurrent AF. Due to the limited number of studies included, it is possible that the results were underpowered. Further prospective studies in the future are warranted.
Abstract 4145107: Latest Insights in Drug-Induced Kounis Syndrome: A Systematic Review 2024
Circulation, Volume 150, Issue Suppl_1, Page A4145107-A4145107, November 12, 2024. Background:Kounis syndrome (KS), also known as allergic myocardial infarction, is a rare but potentially life-threatening condition characterized by acute coronary syndrome in the setting of allergic reactions triggered by drugs, foods, vaccines, or environmental exposure. Our study provides an updated comprehensive insight into this patient cohort on a large scale.Methods:We conducted a systemic literature search in PubMed, EMBASE, and Google Scholar between 2018 and 2024, using MeSH terms and keywords for “Kounis syndrome”, “drug”, and allergy to identify the cases of drug-induced KS. Initial search yielded 325 articles. After excluding duplicates, review articles and irrelevant studies, we included only 51 articles reporting drug-induced KS.Results:Our study identified 51 patients of KS with a median age of 56 ± 14 years. Of those, 56.86% were female. The most frequently implicated drugs in KS were antimicrobials (37.25%), followed by iodinated contrast media (19.60%), NSAIDs (15.68%), and antineoplastics (9.80%). Of those, 64.70% of patients were diagnosed with KS-I, 13.72% with KS-II, and 21.56% with KS-III. Chest pain (94.1%), dyspnea (90.1%), and palpitations (60.78%) were predominant initial manifestations, and most cases (78.43%) were presented within 1st hour of drug ingestion. ST-segment changes (100%) were common ECG findings, and 64.70% of patients had elevated cardiac troponin. All patients had reduced left ventricular ejection fraction (LVEF) (
Abstract 4147899: Clinical Usefulness of Pulmonary Embolism Response Team (PERT) among Pulmonary Embolism Patients: A Systematic Review and Meta-analysis
Circulation, Volume 150, Issue Suppl_1, Page A4147899-A4147899, November 12, 2024. Background:Despite the advancement in management, pulmonary embolism has challenges in its early diagnosis and initiation of the therapies. To counter this situation, the concept of a Pulmonary Embolism Response Team (PERT), a multidisciplinary team comprised of different healthcare providers, emerged in 2012 as an initiative to optimize care for pulmonary embolism patients. This approach shown to be effective in improving the early and effective management of PE patients, thus improving the clinical recovery in some studies yet remain inclusive in other studies. Given the trending PERT acceptance situation in PE management, we performed this systematic review and meta-analysis to analyze the clinical impact of the PERT approach on PE patient management.Methods:We conducted a systematic review and meta-analysis from pertinent studies published until May 2024 using PubMed, Embase, and Scopus databases comparing PERT vs standard approach for PE management. This study is registered with PROSPERO and data analysis was performed using the RevMan Web.Results:In this analysis, 15,621 PE patients who managed via the PERT or standard approach were included in 23 studies. The use of PERT was associated with significantly lower odds of short-term mortality (OR: 0.76, CI 0.59 to 0.99), and higher odds of utilization of advanced treatment strategy (OR: 3.45, CI 1.95 to 6.09). Additionally, PERT was associated with favorably lower odds of major bleeding (OR: 0.60, CI 0.34 to 1.05) and early achievement of therapeutic anticoagulation (MD: -1.39, CI -5.32 to 2.54). Despite higher odds of ICU admission, the length of stay in ICU was significantly lower in the PERT group (MD: -0.67, CI -1.28 to -0.05).Conclusion:Based on this meta-analysis, the PERT approach for PE management significantly increases the chances of utilization of advanced PE management strategies, thus shortening the ICU stays, and reducing mortality risk. Additionally, it could potentially reduce the major bleeding risk. PERT should be in the focus as one of the standards of care for area PE management.
Abstract 4119611: Catheter ablation approach and outcome in HIV+ patients with atrial fibrillation: a systematic review and meta-analysis
Circulation, Volume 150, Issue Suppl_1, Page A4119611-A4119611, November 12, 2024. Background:Catheter ablation has emerged as an effective treatment option for atrial fibrillation (AF) in the general population. However, limited data exist on the outcomes of catheter ablation in patients infected with the Human Immunodeficiency Virus (HIV+) with concomitant AF.Objectives:This systematic review and single arm meta-analysis aims to comprehensively evaluate the literature on catheter ablation approach and outcome in HIV+ patients with AF.Methods:A systematic search of PubMed, Embase, and Cochrane Central Register of Controlled Trials was conducted following PRISMA guidelines.Studies meeting the intervention of catheter ablation for AF in HIV+ patients, using radiofrequency, cryoballoon, or pulsed field ablation techniques, were included and data were collected and synthesized using proportion meta-analysis techniques. Statistical analysis was carried out using R software.Results:Three studies met the inclusion criteria, involving 89 HIV+ patients, with an average age of 51.5 years, of whom 83.1% were men, undergoing catheter ablation. Two studies performed received isolation of the pulmonary vein (PV) + posterior wall and superior vena cava. And one study evaluated only the isolation of the pulmonary veins. Of these patients, 43.8% had paroxysmal AF and 56.1% had persistent AF. In two studies reporting freedom from atrial arrhythmias, all patients (62) experienced recurrence of atrial arrhythmias within 5 years of follow-up. Freedom from repeat ablation was 6.26% (Figure 1A). The rate of Pulmonary Vein Trigger was 31.28% (Figure 1B), while the rate of Non-Pulmonary Vein Trigger (non-PV) was 76.64% (Figure 1C).Conclusion:In this systematic review and meta-analysis assessing outcomes of ablation in HIV patients with AF, we observed a similar prevalence of paroxysmal and persistent AF. Furthermore, contrary to the non-HIV+ patients, a high incidence of non-pulmonary vein triggers of AF was noted in this population.
Abstract 4142117: First Reported Case of Massive Gastrointestinal Bleeding Linked to Piperacillin-Tazobactam in a Patient on Rivaroxaban: A Comprehensive Case Review
Circulation, Volume 150, Issue Suppl_1, Page A4142117-A4142117, November 12, 2024. Introduction:The management of patients with Venous thromboembolism (VTE) receiving anticoagulant therapy is complicated by potential interactions with other medications, including antibiotics. Piperacillin-tazobactam (PTZ) has been implicated in unexpected disturbances in the coagulation cascade, which can be critical in patients concurrently using anticoagulants like rivaroxaban. This report explores the complexities of prescribing broad-spectrum antibiotics to patients with pre-existing cardiac conditions and the necessity of careful consideration of drug-drug interactions.Case Report:A 52-year-old white male with a history of deep vein thrombosis on rivaroxaban, presented with severe left leg cellulitis and subsequent gastrointestinal bleeding shortly after the initiation of piperacillin-tazobactam. His presentation was complicated by a rapid deterioration in his condition following a syncopal episode, characterized by hematochezia and hematemesis, necessitating urgent medical interventions including the cessation of all anticoagulation therapy, esophagogastroduodenoscopy and broad-spectrum antibiotics.Discussion:This case highlights the clinical challenges and potential risks of coagulopathies induced by PTZ or the interaction of PTZ with rivaroxaban, stressing the importance of multidisciplinary vigilance. The mechanisms by which PTZ may influence the coagulation pathways in patients already at risk due to their cardiac profiles underscore a significant area of concern for clinicians.