Publications by authors named "Edgar Tay"

Aims: Valve durability becomes a major issue as transcatheter aortic valve implantation (TAVI) is expanding to populations with longer life expectancy. We sought to i) determine the incidence of structural valve deterioration (SVD), ii) compare the incidence of SVD between balloon-expandable (BE) and self-expandable (SE) valves, and iii) analyze the impact of SVD.

Methods And Results: 2040 patients who underwent TAVI (2007-2020) from 9 centers were included.

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Transcatheter aortic valve implantation (TAVI) has been established as an effective treatment modality in patients with severe aortic stenosis (AS) and the uptake of TAVI is rapidly growing in the Asia-Pacific region. However, there exist a heterogeneity in the management of aortic stenosis and the use of TAVI among countries in the region. Reasons for these differences include anatomic variations, disparity in healthcare resources and infrastructure, and the lack of consensus on the optimal management of AS in the Asia-Pacific region.

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Disseminated venous thromboembolism (VTE) occurs commonly in cancer patients, who tend to have contraindications to systemic thrombolysis and require cancer surgery. Such clinical scenarios are often challenging to manage. In this case report, we illustrate an innovative, single procedural approach in such a patient to remove extensive VTE, improve symptoms, prevent hemodynamic decompensation, and allow for a minimal level of anticoagulation such that necessary cancer surgery can proceed safely.

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Article Synopsis
  • * Conducted on 122 patients with moderate to severe aortic stenosis, the research identified specific circulating proteins that correlate with higher risks of heart failure, severe symptoms, and mortality.
  • * Key proteins linked to inflammation and immune responses were significantly associated with worse outcomes, particularly in patients showing reduced heart strain, suggesting new avenues for assessing patient risk beyond standard imaging methods.
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Objectives: In recent years, the use of artificial intelligence (AI) models to generate individualised risk assessments and predict patient outcomes post-Transcatheter Aortic Valve Implantation (TAVI) has been a topic of increasing relevance in literature. This study aims to evaluate the predictive accuracy of AI algorithms in forecasting post-TAVI mortality as compared to traditional risk scores.

Methods: Following the Preferred Reporting Items for Systematic Reviews and Meta-analyses for Systematic Reviews (PRISMA) standard, a systematic review was carried out.

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Article Synopsis
  • The COVID-19 pandemic led to significant treatment delays for patients needing transcatheter aortic valve replacement (TAVR), with a marked decrease in procedure volumes during the first two waves of the pandemic.
  • The study analyzed TAVR case data from 130 centers in 61 countries, finding a 15% drop in cases during the first wave and 7% in the second, particularly affecting regions like Africa, Central-South America, and Asia.
  • Factors such as hospital type (private vs public), urban vs rural location, low procedure volumes, a country's socioeconomic status, and stringent public health measures contributed to these reductions, highlighting the need for improved public health policies for future health crises.
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Introduction: Management of aortic stenosis (AS) in patients with chronic kidney disease (CKD) may often be overlooked, and this could confer poorer outcomes.

Methods: Consecutive patients ( n = 727) with index echocardiographic diagnosis of moderate to severe AS (aortic valve area <1.5 cm 2 ) were examined.

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Clinical outcomes for intermediate or high-risk pulmonary emboli (PE) remain sub-optimal, with limited improvements in survival for the past 15 years. Anticoagulation alone results in slow thrombus resolution, persistent right ventricular (RV) dysfunction, patients remaining at risk of haemodynamic decompensation and increased likelihood of incomplete recovery. Thrombolysis elevates risk of major bleeding and is thus reserved for high-risk PE.

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Cardiovascular disease is a leading cause of morbidity and mortality in individuals with Down syndrome. Congenital heart disease is the most common cardiovascular condition in this group, present in up to 50% of people with Down syndrome and contributing to poor outcomes. Additional factors contributing to cardiovascular outcomes include pulmonary hypertension; coexistent pulmonary, endocrine, and metabolic diseases; and risk factors for atherosclerotic disease.

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Article Synopsis
  • * Using speckle-tracking echocardiography, researchers measured three types of LA strain and tracked patient outcomes over an average of 2.7 years, finding that lower strain values correlated with worse clinical results.
  • * LA strain metrics (particularly LASr < 20%) demonstrated superior prognostic value compared to traditional echocardiographic variables and were strongly linked to adverse outcomes like heart failure hospitalizations and mortality.
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Patients undergoing transcatheter aortic valve implantation (TAVI) commonly have co-morbidities requiring anticoagulation. However, the optimal post-procedural anticoagulation regimen is not well-established. This meta-analysis investigates safety and efficacy outcomes of direct oral anticoagulants (DOACs) and Vitamin K Antagonist (VKA), with or without concomitant antiplatelet therapy.

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Background: Significant (moderate or greater) mitral regurgitation (MR) could augment the hemodynamic effects of aortic valvular disease in patients with bicuspid aortic valve (BAV), imposing a greater hemodynamic burden on the left ventricle and atrium, possibly culminating in a faster onset of left ventricular dilation and/or symptoms. The aim of this study was to determine the prevalence and prognostic implications of significant MR in patients with BAV.

Methods: In this large, multicenter, international registry, a total of 2,932 patients (mean age, 48 ± 18 years; 71% men) with BAV were identified.

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Coronary artery disease (CAD) is common in patients with severe aortic stenosis. With the advent of transcatheter aortic valve implantation (TAVI) as a therapeutic option, management of CAD in such patients has undergone a revolution. Younger patients are now candidates for treatment, and have a greater life-time probability of requiring post-TAVI coronary access.

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Background: The prognostic impact of left ventricular ejection fraction (LVEF) in patients with bicuspid aortic valve (BAV) disease has not been previously studied.

Objectives: The purpose of this study was to determine the prognostic impact of LVEF in BAV patients according to the type of aortic valve dysfunction.

Methods: We retrospectively analyzed the data collected in 2,672 patients included in an international registry of patients with BAV.

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Indications for transcatheter aortic valve implantation (TAVI) have expanded in many countries to include patients with aortic stenosis who are at low surgical risk, and a similar expansion to this cohort is anticipated elsewhere in the world, together with an increase in the proportion of patients with bicuspid aortic valve (BAV) morphology as the age of the patients being treated decreases. To date, patients with BAV have been excluded from major randomized trials of TAVI owing to anatomical considerations. As a consequence, BAV has been a relative contraindication to the use of TAVI in international guidelines.

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Background: Severe functional tricuspid regurgitation (fTR) is associated with adverse clinical outcomes and remains under-treated. There is recent interest in this disease due to emerging tricuspid valve therapies. However, the timing and selection of patients who may benefit from treatment is uncertain.

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Background: Sex-specific thresholds of computed tomography (CT)-derived aortic valve calcification (AVC) or AVC density (AVCd) to identify severe aortic stenosis (AS) have been established in populations that consisted mainly of Caucasians with a tricuspid aortic valve. The objective of this study was to evaluate the accuracy (i.e.

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Article Synopsis
  • The study aimed to find the significance of various biomarkers in predicting outcomes for patients with aortic stenosis (AS), particularly in terms of mortality and heart failure.
  • Researchers measured biomarkers like NT-proBNP, hsTnT, and MR-proADM in 173 patients with moderate to severe AS over several years, analyzing their effectiveness in predicting primary and secondary health outcomes.
  • Results indicated that MR-proADM had the strongest correlation with worse health outcomes, suggesting it could be the key biomarker for assessing risk in AS patients.
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Unlabelled: The transcatheter mitral valve prosthesis is ideally suited for patients with inoperable mitral etiology. The transcatheter mitral valve implantation (TMVI) procedure has closely followed the evolution of transcatheter aortic procedures. There are considerable design variations amongst the limited TMVI prostheses currently available, and the implantation profiles of the devices are notably different.

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Background: Current guidelines recommend psychological support for patients with pulmonary hypertension suffering from psychological adversity. However, little is known about the prevalence and risk factors of depression and anxiety in patients with pulmonary hypertension (PH).

Methods: Medline and Embase were searched from inception to 6 May 2021.

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Current guidelines on the management of patients with aortic valvular disease have widened the use of transcatheter aortic valve implantation (TAVI) with an emphasis on avoidance of prosthesis-patient mismatch (PPM). This study sought to examine the incidence, risk factors, and all-cause mortality of PPM after TAVI. Medline and Embase databases were searched from inception to August 10, 2021.

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Aims: Characterization of left ventricular (LV) geometric pattern and LV mass could provide an important insight into the pathophysiological adaptations of the LV to pressure and/or volume overload in patients with bicuspid aortic valve (BAV) and significant (≥moderate) aortic valve (AV) disease. This study aimed to characterize LV remodelling and its prognostic impact in patients with BAV according to the predominant type of valvular dysfunction.

Methods And Results: In this international, multicentre BAV registry, 1345 patients [51.

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Aims: Although surgical aortic valve replacement (SAVR) is currently the recommended intervention for patients with native AR without aortic stenosis, a significant proportion of Asian patients undergo transcatheter aortic valve replacement (TAVR), which has not been studied fully for safety and outcomes. This systematic review aims to examine the characteristics and outcomes of Asian patients with pure native aortic regurgitation (AR) undergoing TAVR.

Methods And Results: PubMed, Embase, Scopus, Web of Science and Cochrane CENTRAL were systematically searched for randomised controlled trials, observational studies and case reports published  from inception to 2 April 2020, involving patients of Asian ethnicity with pure native aortic regurgitation who had undergone TAVR.

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