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Left atrial wall thickness correlates with pulmonary vein reconnection following atrial fibrillation ablation
Kushnir, Alexander; Barbhaiya, Chirag R; Jankelson, Lior; Holmes, Douglas; Aizer, Anthony; Park, David; Bernstein, Scott; Spinelli, Michael A; Garber, Leonid; Yang, Felix; Rosinski, Elizabeth; Chinitz, Larry A
BACKGROUND:Pulmonary vein (PV) isolation is the cornerstone of radiofrequency (RF) ablation for atrial fibrillation (AF) and PV reconnection is a common cause of recurrent AF. The relationship between PV ostial wall thickness (WT) and durable PV isolation is a matter of ongoing investigation. Additionally, the relationship between catheter impedance and WT is not well understood. We studied the relationship between PV ostial WT, ablation lesion metrics, and PV reconnection. METHODS:16 patients were identified who underwent an initial and redo AF ablation procedure and had a cardiac CTA analyzed using ADAS-3D imaging software performed prior to the initial ablation. Ablation lesion metrics from the initial ablation procedure were collected from the electroanatomic mapping software. Reconnected and isolated PV were identified based on electroanatomic mapping data collected at the redo AF ablation procedure. Patients with reconnected PV exhibited thicker left atrial walls (1.4 mm vs 1.2 mm, P < 0.05) and reconnected veins exhibited thicker ostial walls (1.7 mm, vs 1.5 mm, P < 0.05). LA volume, number of ablation lesions, and ablation lesion time were not significantly different between reconnected and isolated PV. Impedance drop during ablation was greater in patients with reconnected PV compared to patients with isolated PV (- 9.0 Ω vs - 6.6 Ω, P < 0.05). There was no correlation between PV ostial WT and ablation lesion impedance drop. CONCLUSION/CONCLUSIONS:PV reconnection was associated with thicker LA and PV ostial WT. Future studies will examine whether targeting thicker PV ostial tissue with more aggressive lesion metrics or different ablation technology can improve PV isolation and ablationoutcomes.
PMID: 40542289
ISSN: 1572-8595
CID: 5871412
Cardiac Sarcoidosis Presenting as a Biatrial Mass With Extensive Extracardiac Involvement [Case Report]
Hayes, Dena E; Hong, Seok Jae; Moreira, Andre L; Nelson, Nathaniel; Jung, Albert; DiVita, Michael; Moin, Danyaal; Aizer, Anthony; Donnino, Robert; Goldberg, Randal I
BACKGROUND:The diagnosis of cardiac sarcoidosis (CS) is often challenging, particularly in atypical cases. CASE SUMMARY/METHODS:This case involves a previously healthy 33-year-old woman who was found to have a biatrial mass and evidence of a diffuse inflammatory or neoplastic process on multimodality imaging. Percutaneous biopsy of the cardiac mass was performed, and histopathologic examination revealed granulomas consistent with CS. DISCUSSION/CONCLUSIONS:This case adds to the growing number of reports of CS manifesting as an intracardiac mass. TAKE-HOME MESSAGES/CONCLUSIONS:The clinical presentation of CS is highly variable, and it may rarely manifest as an intracardiac mass. The diagnosis of cardiac sarcoidosis is often challenging, particularly in patients with atypical presentations. Indeterminate cardiac masses often require direct tissue sampling because the changes in treatment and prognosis are substantial.
PMID: 40541348
ISSN: 2666-0849
CID: 5871352
Peak Frequency Analysis Distinguishes Nearfield from Farfield Signals during Pulmonary Vein Isolation
Ting, Peter; Barbhaiya, Chirag R; Jankelson, Lior; Holmes, Douglas; Kushnir, Alexander; Yang, Felix; Bernstein, Scott A; Park, David S; Chinitz, Larry A; Aizer, Anthony
BACKGROUND:Identifying nearfield and farfield signals is critical to mapping and ablating cardiac arrhythmias. This assessment is qualitative, depending on the "sharpness" of pulmonary vein (PV) electrograms. Electrogram peak frequency (PF) analysis is hypothesized to be a quantitative measure of signal proximity. OBJECTIVE:To confirm if PF defines nearfield versus farfield electrical signals and if it can be used during ablation to establish pulmonary vein isolation (PVI). METHODS:We created a cohort of 30 patients with AF undergoing PVI. Left atrial and PV maps of PF were generated before and after PVI. In the first 10 patients with paroxysmal AF (cohort 1), a cutoff value was selected to predict nearfield versus farfield signals. This cutoff was validated in a cohort of 10 patients with paroxysmal AF (cohort 2) and a cohort of 10 patients with persistent AF (cohort 3). RESULTS:PF was lower in farfield electrograms than nearfield electrograms. A PF cutoff of 300 Hz had a sensitivity of 93.2% (95% CI 81.3% - 98.6%) in cohort 1, 90.0% (95% CI 76.3 - 97.2) in cohort 2, and 98.6% (95% CI 90.1 - 99.7%) in cohort 3 for differentiating farfield from nearfield electrograms. The specificity was 100.0% (95% CI 98.2% - 100.0%) and the AUC was 0.99 (95% CI 0.97 - 1.00) in all patients. CONCLUSIONS:We confirmed the hypothesis that PF distinguishes nearfield from farfield electrograms. PF analysis improves the recognition of PV isolation. Mapping and ablation strategies utilizing PF should be pursued to improve ablation outcomes.
PMID: 40480589
ISSN: 1556-3871
CID: 5862902
Persistent Left Atrial Appendage Thrombus in Atrial Fibrillation Despite Anticoagulation
Kushnir, Alexander; Bernstein, Scott; Barbhaiya, Chirag R; Jankelson, Lior; Holmes, Douglas; Aizer, Anthony; Park, David; Spinelli, Michael; Garber, Leonard; Yang, Felix; Chinitz, Larry A
OBJECTIVES/OBJECTIVE:Assess the characteristics and management of patients with LAA thrombus despite compliance with oral anticoagulation (OAC). BACKGROUND:Atrial fibrillation guidelines consider 4 weeks of uninterrupted OAC sufficient to avoid transesophageal echocardiography to rule out left atrial appendage thrombus. However, some patients may exhibit persistent thrombus despite compliance with OAC. METHODS:Clinical history, management, and outcomes were reviewed for patients with LAA thrombus on preprocedural TEE presenting for an AF related procedure between 2021 and 2024. RESULTS:Sixty-five (1.8%) of 3653 preprocedural TEEs exhibited LAA thrombus. OAC compliance of at least 4 week was documented in 39 (60%) of these patients, including Apixaban 64%, Rivaroxaban 23%, Warfarin 8%, Dabigatran 5%. Two of these patients (3%) experienced an embolic event and 8 (12%) died during the follow up period. Resolution of LAA thrombus was documented in 12/32 patients, 6 who switched to Dabigatran, 2 to Eliquis, 1 to Warfarin, and 3 remained on Eliquis. LAA-occlusion was successfully performed in seven patients with persistent LAA thrombus. CHADS-VASc 3 or greater, HFrEF, or valvular AF were present in 37/39 of these patients. CONCLUSION/CONCLUSIONS:For 3653 patients who underwent Preprocedural TEE, 39 exhibited LAA thrombus despite compliance with OAC. Switching OAC or maintaining the same agent for longer period of time resolved the thrombus in 31% of cases. LAA-O was effective in cases where the thrombus did not resolve. Patients with non-valvular AF, compliance with OAC > 4 weeks, CHADS-VASc ≤ 2, and normal EF exhibited the lowest probability for not having a thrombus on TEE.
PMID: 40371618
ISSN: 1540-8167
CID: 5844522
Where Did the Party Go? The Significance of Limited Pulmonary Vein Connections in Persistent Atrial Fibrillation Ablation - An Editorial [Editorial]
Junarta, Joey; Aizer, Anthony
PMID: 40110681
ISSN: 1540-8167
CID: 5813532
Quantitative considerations for choosing between Amulet and Watchman FLX and management of device related complications
Kushnir, Alexander; Barbhaiya, Chirag R; Jankelson, Lior; Holmes, Douglas; Aizer, Anthony; Park, David; Spinelli, Michael; Bernstein, Scott; Garber, Leonard; Yang, Felix; Ro, Richard; Chinitz, Larry A
BACKGROUND:Left atrial appendage occlusion (LAA-O) with Amulet and Watchman FLX are approved for reducing stroke risk in patients with atrial fibrillation when oral anticoagulation is not tolerated. Real world clinical outcomes reported along with imaging data are needed to help clinicians choose between these two technologies and manage device-related complications. METHODS:The study retrospectively analyzed clinical, transesophageal (TEE), and available computed tomography (CT) data from 364 FLX and 292 Amulet procedures performed at an academic medical center over a 4-year period. RESULTS:were included. TTE LAA-orifice area correlated with CT-derived measurements. There were more late pericardial effusions for Amulet (3.1%) compared to FLX (0.3%), though the majority were conservatively managed. Mean procedure times were similar (FLX 64 ± 24, Amulet 65 ± 21 min) as were the rates of device related thrombus (FLX 1% and Amulet 1.4%). Clinically relevant peridevice leak (PDL) on follow-up TEE imaging was greater for FLX (16%) compared to Amulet (10%). Combined AF ablation-LAA-occlusion procedures exhibited lower rates of PDL and late pericardial effusions compared to solo procedures. CONCLUSIONS:Based on retrospective analysis, an initial strategy with Watchman FLX in patients with favorable LAA anatomy would reduce the risk of late pericardial effusions at the expense of a higher rate of clinically relevant PDL compared to Amulet. Combined AF ablation and LAA-O procedures exhibit less PDL.
PMID: 39939509
ISSN: 1572-8595
CID: 5793662
The Utility of Coronary Revascularization to Reduce Ventricular Arrhythmias in Coronary Artery Disease Patients: A Systematic Review
Junarta, Joey; Siddiqui, Muhammad U; Abaza, Ehab; Zhang, Peter; Patel, Anjani; Park, David S; Aizer, Anthony; Razzouk, Louai; Rao, Sunil V
Ventricular arrhythmias (VA) are a major cause of morbidity and mortality in patients with coronary artery disease (CAD). Current guidelines recommend revascularization of significant CAD to improve survival in patients with ventricular fibrillation (VF), polymorphic ventricular tachycardia (VT), or those who are post-cardiac arrest. However, revascularization is not recommended for CAD patients with suspected scar-mediated monomorphic VT. There is a paucity of data detailing the utility of revascularization in reducing VA in CAD patients who do not present with acute coronary syndrome (ACS) and are not immediately post-cardiac arrest, which is the focus of this review. Medline, Scopus, and the Cochrane Central Register of Controlled Trials were systematically searched to identify relevant studies addressing this question. Studies that included patients presenting with ACS or those who were immediately post-cardiac arrest at the time of revascularization were excluded. In total, five studies comprising 2663 patients were reviewed.
PMID: 39696811
ISSN: 1522-726x
CID: 5764642
Catheter ablation in rate-controlled atrial fibrillation with severely reduced ejection fraction: intervention for irregularity-mediated cardiomyopathy
Maidman, Samuel D; Aizer, Anthony; Jankelson, Lior; Holmes, Douglas; Park, David S; Bernstein, Scott A; Knotts, Robert; Kushnir, Alex; Chinitz, Larry A; Barbhaiya, Chirag R
BACKGROUND:Recent evidence suggests atrial fibrillation (AF) causes cardiomyopathy due to remodeling driven by both irregular rate and rhythm. Atrial fibrillation (AF) ablation in patients with reduced ejection fraction (EF) ≤ 35% has been shown to improve EF and mortality. It is unknown whether the benefits of AF ablation among patients with reduced EF are affected by the degree of pre-ablation rate control. OBJECTIVES/OBJECTIVE:To evaluate AF ablation echocardiographic outcomes for patients who have EF ≤ 35% with varying degrees of pre-ablation rate control. METHODS:Single-center, retrospective study of patients with EF ≤ 35% undergoing first-time ablation of persistent AF. Primary analyses evaluated the degree to which pre-ablation rate control impacted echocardiographic outcomes. Rates of EF recovery to > 35% were compared at three different cutoffs: 110 bpm, 90 bpm, and 70 bpm. A linear regression analysis was then performed to evaluate whether baseline heart rate (HR) predicted change in EF. RESULTS: = 0.05, p = 0.07). CONCLUSIONS:Catheter ablation of persistent AF in patients with reduced EF frequently resulted in recovery in EF > 35%, irrespective of pre-ablation achieved rate control. While patients with HR > 70 bpm experienced a greater improvement in EF compared to those ≤ 70 bpm, patients with baseline HR below this target still experienced significant EF improvements. Further investigation into irregularity-mediated cardiomyopathy is warranted.
PMID: 39702550
ISSN: 1572-8595
CID: 5764822
Catheter ablation alone versus catheter ablation with combined percutaneous left atrial appendage closure for atrial fibrillation: a systematic review and meta-analysis
Junarta, Joey; Siddiqui, Muhammad U; Abaza, Ehab; Zhang, Peter; Roshandel, Aarash; Barbhaiya, Chirag R; Jankelson, Lior; Park, David S; Holmes, Douglas; Chinitz, Larry A; Aizer, Anthony
BACKGROUND:Combined catheter ablation (CA) with percutaneous left atrial appendage closure (LAAC) may produce comprehensive treatment for atrial fibrillation (AF) whereby rhythm control is achieved and stroke risk is reduced without the need for chronic oral anticoagulation. However, the efficacy and safety of this strategy is still controversial. METHODS:This meta-analysis was reported according to the Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines. Medline, Scopus, and Cochrane Central Register of Controlled Trials were systematically searched to identify relevant studies. The risk of bias was assessed using the Modified Newcastle-Ottawa scale and Cochrane risk of bias tool. Eligible studies reported outcomes in patients with AF who underwent combined CA and LAAC vs CA alone. Studies performing CA without pulmonary vein isolation were excluded. RESULTS:Eight studies comprising 1878 patients were included (2 RCT, 6 observational). When comparing combined CA and LAAC vs CA alone, pooled results showed no difference in arrhythmia recurrence (risk ratio (RR) 1.04; 95% confidence interval (CI) 0.82-1.33), stroke or systemic embolism (RR 0.78; 95% CI 0.27-2.22), or major periprocedural complications (RR 1.28; 95% CI 0.28-5.89). Total procedure time was shorter with CA alone (mean difference 48.45 min; 95% CI 23.06-74.62). CONCLUSION/CONCLUSIONS:Combined CA with LAAC for AF is associated with similar rates of arrhythmia-free survival, stroke, and major periprocedural complications when compared to CA alone. A combined strategy may be as safe and efficacious for patients at moderate to high risk for bleeding events to negate the need for chronic oral anticoagulation.
PMID: 39230634
ISSN: 1572-8595
CID: 5687972
Personalized Ablation Strategies Optimize First Pass Isolation and Minimize Pulmonary Vein Reconnection During Paroxysmal Atrial Fibrillation Ablation
Junarta, Joey; Qiu, Jessica; Cheng, Austin V; Barbhaiya, Chirag R; Jankelson, Lior; Holmes, Douglas; Kushnir, Alexander; Knotts, Robert J; Yang, Felix; Bernstein, Scott A; Park, David S; Chinitz, Larry A; Aizer, Anthony
PMID: 39447812
ISSN: 1556-3871
CID: 5740132