Publications by authors named "Kliner D"

Introduction: Real-world studies comparing safety and efficacy of combined percutaneous left atrial appendage occlusion (LAAO) and catheter ablation (CA) to LAAO alone are limited.

Methods: Patients from a large US hospital system undergoing combined LAAO and left-atrial CA from 8/2020 to 2/2024 were retrospectively analyzed and compared to a control group undergoing LAAO alone. Controls were identified using a 1:2 propensity score match based on LAAO device type (Watchman FLX vs.

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  • This study evaluated how mitral regurgitation (MR) affects patient outcomes after undergoing transcatheter aortic valve implantation (TAVI) for aortic stenosis (AS), finding significant survival differences based on MR severity.
  • Out of 2250 TAVI patients, those with moderate or greater MR had lower survival rates and a higher chance of heart failure readmissions compared to those with less severe MR.
  • The findings suggest the importance of monitoring MR progression after TAVI, as various clinical factors, but not procedural aspects, were linked to the persistence of significant MR, indicating a need for more research on managing combined AS and MR.
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  • Self-expanding (SE) and balloon-expandable (BE) transcatheter heart valves (THVs) are being studied for their performance in valve-in-valve transcatheter aortic valve replacement (ViV-TAVR), with a focus on clinical outcomes from 315 patients over a decade.
  • Results showed that patients with SE THVs experienced lower aortic valve gradients both at 30 days and 1 year post-procedure compared to those with BE THVs, indicating better valve performance.
  • Both types of valves showed similar survival rates and mortality, but BE THVs had a higher incidence of severe prosthesis-patient mismatch, suggesting potential differences in long-term outcomes that need further research.
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Patients with small aortic annuli (SAAs) are predominantly women. We sought to compare gender-based and propensity-matched outcomes of index transcatheter aortic valve replacement (TAVR) in patients with SAAs. In this retrospective institutional analysis (2012 to 2023), primary stratification was by gender.

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Objectives: With the expanding integration of artificial intelligence (AI) and machine learning (ML) into the structural heart domain, numerous ML models have emerged for the prediction of adverse outcomes after transcatheter aortic valve implantation (TAVI). We aim to identify, describe, and critically appraise ML prediction models for adverse outcomes after TAVI. Key objectives consisted in summarizing model performance, evaluating adherence to reporting guidelines, and transparency.

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Background: There continues to be debate regarding the superiority of transcatheter (TAVR) over surgical aortic valve replacement (SAVR) in patients with bicuspid aortic valves (BAV). We aimed to compare outcomes during readmissions in elderly patients with BAV who underwent SAVR or TAVR.

Methods: Patients 65 years or older with BAV who underwent TAVR or isolated SAVR were identified using the National Readmission Database from 2012 through 2018.

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  • Structural valve degeneration is becoming more common with increased bioprosthetic heart valve use, and Valve-in-Valve TAVR (VIV-TAVR) offers a less risky alternative for high-risk patients needing aortic valve replacement.
  • A study analyzing 3,532 TAVR patients from 2013 to 2022 found that VIV-TAVR patients were younger and had more major vascular complications but required fewer permanent pacemakers.
  • The overall survival rates and hospital readmission rates were similar for both VIV-TAVR and native valve TAVR patients, but VIV-TAVR was linked to a reduced hazard of death in multivariable analysis.
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  • - ViV-TAVI (valve-in-valve transcatheter aortic valve implantation) has emerged as a less invasive alternative to redo surgical aortic valve replacement (SAVR) for patients with failed bioprostheses, and a meta-analysis of 16 studies (4,373 patients) was conducted to compare all-cause mortality between the two procedures.
  • - The analysis found that ViV-TAVI had a significantly lower risk of mortality in the first 6 months post-procedure (HR 0.58), but this advantage reversed after 6 months, with redo-SAVR showing better survival (HR 1.92).
  • - Key factors influencing outcomes included age and existing heart conditions, and while
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This study sought to characterize transvalvular hemodynamics during the first 30 days after transcatheter aortic valve implantation (TAVI) across various transcatheter heart valves (THVs), while adjusting for annular dimensions. This was an observational study of TAVIs from September 2021 to October 2022. The primary outcome was mean transvalvular pressure gradient (TVPG), measured using transthoracic echocardiography at day 0, day 1, and day 30 post-TAVI, and were compared across 3 THV, including the self-expandable intra-annular Portico (Abbott Vascular, Santa Clara, California) valve, the balloon-expandable SAPIEN 3 Ultra (Edwards Lifesciences, Irvine, California), and the self-expandable supra-annular Evolut Pro+ (Medtronic, Minneapolis, Minnesota).

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Objective: To compare outcomes of patients undergoing valve-in-valve transcatheter aortic valve replacement (ViV TAVR) versus redo surgical aortic valve replacement (SAVR).

Methods: This was a retrospective study using institutional databases of transcatheter (2013-2022) and surgical (2011-2022) aortic valve replacements. Patients who underwent ViV TAVR were compared with patients who underwent redo isolated SAVR.

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Acute coronary syndrome (ACS) encompasses a broad category of presentations from unstable angina to ST-elevation myocardial infarctions. Most patients undergo coronary angiography upon presentation for diagnosis and treatment. However, the ACS management strategy after transcatheter aortic valve implantation (TAVI) may be complicated because of challenging coronary access.

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Background: This study sought to evaluate outcomes of transcatheter aortic valve replacement (TAVR) in patients with moderate or greater aortic regurgitation (AR).

Methods: This was an observational study using an institutional database of TAVRs from November 2012 to April 2022. The study compared outcomes of TAVR in patients with isolated aortic stenosis (AS) vs patients with AS and concomitant AR (moderate or greater).

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Introduction: Transcatheter aortic valve implantation (TAVI) continues to be the most common modality of treating aortic stenosis in the United States. While infective endocarditis (IE) and its outcomes have been well documented after surgical aortic valve replacement, the incidence and outcomes of early IE after TAVI have not been well described.

Methods: All patients who underwent TAVI from 2012 through 2018 were identified using the National Readmission Database.

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Tricuspid regurgitation is a complex disease that carries a poor prognosis, and surgical repair is associated with high mortality. In light of the success of other transcatheter-based valve interventions, transcatheter tricuspid therapy has recently seen exponential use both clinically and in innovation. Given the rapid development of many tricuspid systems and multiple on-going clinical trials, the aim of this review is to highlight the current state of transcatheter tricuspid therapeutics and to provide an up-to-date view of their clinical use, outcomes and future directions.

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Few studies have reported their experience in explantation of a transcatheter heart valve. We found 2,100 patients who underwent transcatheter aortic valve implantation (TAVI) from 2013 through 2021. Of 2,100, a total of 17 patients underwent surgical aortic valve replacement after TAVI, including surgical bailout.

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Introduction: Prior studies have demonstrated that outcomes of invasive cardiac interventions may vary by hospital teaching status and volume. As transcatheter aortic valve replacement (TAVR) rapidly expands from teaching to nonteaching hospitals across the country, the clinical impact of hospital teaching status has not been clearly established. This study aimed to compare TAVR outcomes between nonteaching and teaching hospitals.

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Background: Data comparing patients who undergo multiarterial grafting during coronary artery bypass grafting (CABG) vs percutaneous coronary intervention (PCI) in patients with multivessel coronary disease are scarce. This study addresses the relevance of using multiple arterial conduits vs PCI for appropriate patients.

Methods: This retrospective study included all patients with coronary artery disease who underwent CABG with multiple arterial conduits or PCI.

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To investigate the effectiveness of transcatheter aortic valve implantation (TAVI) for resolving gastrointestinal bleeding (GIB) in patients with severe GIB and severe aortic stenosis. This was an observational study of consecutive TAVI procedures from 2011 to 2018, identified through a prospectively maintained institutional database. Patients with severe GIB defined as abnormal hemoglobin/hematocrit and overt bleeding or positive fecal occult blood test.

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BACKGROUND Patients with a prior coronary artery bypass graft (CABG) may have a need for repeat revascularization, which is typically attempted first via percutaneous coronary intervention (PCI) of either a bypass graft or native vessel. Long-term outcomes of native vessel compared to graft PCI after CABG have not yet been explored in a large institution study. METHODS Patients with history of prior CABG who underwent PCI at our institution during 2010-2018 were included.

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This study sought to compare outcomes of transcatheter aortic valve replacement (TAVR) performed through subclavian access with those performed through transfemoral access. This was an observational study utilizing an institutional TAVR database from 2010 to 2018. All patients undergoing a TAVR via a transfemoral (TF-TAVR) or subclavian (SC-TAVR) approach were included in the study.

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Background: Readmissions following transcatheter aortic valve replacement (TAVR) are common but detailed analysis of cardiac and non-cardiac inpatient readmissions beyond thirty days to different levels of care are limited.

Methods: Our study population was 1,037 consecutive patients who underwent TAVR between 2011-2017 within a multi-hospital quaternary health system. A retrospective chart review was performed and readmissions were adjudicated and classified based on primary readmission diagnosis (cardiac versus noncardiac) and level of care [intensive care unit (ICU) admission non-ICU admission].

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Background: The wide availability of transcatheter aortic valve replacement (TAVR) and broadening of its indications to most patients with aortic stenosis may increase its utilization in the urgent setting. However, a comparison of long-term outcomes of patients undergoing urgent TAVR when compared to elective TAVR have not been well studied.

Methods: All patients that underwent TAVR from 2011 to 2018 were included.

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Objective: The aim of this study was to evaluate comparative outcomes for percutaneous coronary intervention (PCI) versus coronary artery bypass grafting (CABG) in patients with reduced ejection fraction.

Methods: All patients from the University of Pittsburgh Medical Center from 2011 to 2018 who had reduced preoperative ejection fraction (<50%) and underwent CABG or PCI for coronary revascularization were included in this study. Patients were risk-adjusted with propensity matching (1:1) and primary outcomes included long-term survival, readmission, and major adverse cardiac and cerebrovascular events (MACCE).

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Background: Transcatheter aortic valve replacement (TAVR) continues to gain momentum with current-generation balloon-expandable (BE) Edwards SAPIEN 3 (Edwards Lifesciences, Irvine, CA) and self-expandable (SE) Medtronic Evolut valves (Medtronic, Minneapolis, MN). Safety and efficacy of each device has been studied independently but head-to-head comparisons remain limited.

Methods: The institutional database was used to identify patients undergoing TAVR with BE and SE systems through transfemoral access between 2015 and 2018.

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Background: Transcatheter aortic valve replacement (TAVR) has emerged as the preferred alternative to surgical aortic valve replacement in elderly patients. However, the long-term outcomes of nonagenarians undergoing TAVR are unknown.

Methods: Octogenarian and nonagenarian patients undergoing TAVR from 2011 to 2018 were identified from a prospectively maintained institutional database.

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