Publications by authors named "Paul Ong"

Background: Patients undergoing primary percutaneous coronary intervention (PPCI) for ST-segment-elevation myocardial infarction (STEMI) have a high thrombotic burden and often have a high bleeding risk (HBR). Asian patients have different patterns of thrombotic and bleeding risk from other populations which may be particularly relevant in the setting of PPCI for STEMI.

Objectives: To assess the safety and efficacy of the polymer free biolimus coated coronary stent (PF-BCS, BioFreedom, Biosensors International) in Asian STEMI patients.

View Article and Find Full Text PDF

Objective: To examine whether gentrification exposure is associated with future hypertension and diabetes control.

Methods: Linking records from an integrated health care system to census-tract characteristics, we identified adults with hypertension and/or diabetes residing in stably low-SES census tracts in 2014 (n = 69,524). We tested associations of census tract gentrification occurring between 2015 and 2019 with participants' disease control in 2019.

View Article and Find Full Text PDF

Importance: Unaffordable housing is associated with adverse health-related outcomes, but little is known about the associations between moving due to unaffordable housing and health-related outcomes.

Objective: To characterize the association of recent cost-driven residential moves with health-related outcomes.

Design, Setting, And Participants: This cross-sectional study involved a weighted multivariable regression analysis of California Health Interview Survey data from January 1, 2011, to December 31, 2017.

View Article and Find Full Text PDF

Background: The optimal duration of antiplatelet therapy (APT) after coronary stenting in patients at high bleeding risk (HBR) presenting with an acute coronary syndrome remains unclear.

Objectives: The objective of this study was to investigate the safety and efficacy of an abbreviated APT regimen after coronary stenting in an HBR population presenting with acute or recent myocardial infarction.

Methods: In the MASTER DAPT trial, 4,579 patients at HBR were randomized after 1 month of dual APT (DAPT) to abbreviated (DAPT stopped and 11 months single APT or 5 months in patients with oral anticoagulants) or nonabbreviated APT (DAPT for minimum 3 months) strategies.

View Article and Find Full Text PDF

The impact of COVID-19 on job displacement in the United States has been unevenly experienced by race, ethnicity, and the socioeconomically disadvantaged. Although unemployment benefits may mitigate the effects of job displacement, this social safety net is also unevenly distributed across workers. We examine racial/ethnic differences in receiving unemployment benefits among workers displaced by the pandemic.

View Article and Find Full Text PDF

Coronary artery perforation during percutaneous coronary intervention (PCI) is a rare but severe complication which has been associated with a high rate of major adverse outcomes and is potentially fatal. We report a case of a 70-year-old male who presented with an anterior ST-elevation myocardial infarction. Coronary angiogram revealed a proximal left anterior descending (LAD) artery occlusion.

View Article and Find Full Text PDF

Treatment for acute coronary syndrome (ACS) in women during pregnancy is challenging. Current standard treatment for ACS includes coronary angioplasty with guideline-directed medical therapy including aspirin, P2Y12 inhibitors, beta-blockers, angiotensin converting enzyme inhibitors, which may portend adverse effects to the fetus. ACS increases ischemic and obstetric complications during pregnancy and the postpartum period.

View Article and Find Full Text PDF
Article Synopsis
  • * A systematic review analyzed 78 studies involving over 17,000 participants, highlighting common effective service components such as collaborative care, active patient involvement, and continuous assessment, which are essential for quality improvement.
  • * Experts noted that successful implementation of these care services depends on having well-trained, multidisciplinary teams and overcoming barriers like political will and socioeconomic disparities in various regions.
View Article and Find Full Text PDF

Advanced age, diabetes, and chronic kidney disease not only increase the risk for ischaemic events in chronic coronary syndromes (CCS) but also confer a high bleeding risk during antiplatelet therapy. These special populations may warrant modification of therapy, especially among Asians, who have displayed characteristics that are clinically distinct from Western patients. Previous guidance has been provided regarding the classification of high-risk CCS and the use of newer-generation P2Y inhibitors (i.

View Article and Find Full Text PDF
Article Synopsis
  • The MASTER DAPT trial aimed to determine the optimal duration of antiplatelet therapy in high bleeding risk patients after coronary stenting, comparing abbreviated versus standard approaches.
  • Patients were separated into groups based on whether they required oral anticoagulation, impacting their treatment duration.
  • Results showed no significant difference in adverse clinical outcomes or bleeding events between the abbreviated and standard therapy regimens for both groups, suggesting similar safety profiles regardless of the therapy length.
View Article and Find Full Text PDF

Background: The appropriate duration of dual antiplatelet therapy in patients at high risk for bleeding after the implantation of a drug-eluting coronary stent remains unclear.

Methods: One month after they had undergone implantation of a biodegradable-polymer sirolimus-eluting coronary stent, we randomly assigned patients at high bleeding risk to discontinue dual antiplatelet therapy immediately (abbreviated therapy) or to continue it for at least 2 additional months (standard therapy). The three ranked primary outcomes were net adverse clinical events (a composite of death from any cause, myocardial infarction, stroke, or major bleeding), major adverse cardiac or cerebral events (a composite of death from any cause, myocardial infarction, or stroke), and major or clinically relevant nonmajor bleeding; cumulative incidences were assessed at 335 days.

View Article and Find Full Text PDF

Clinical guidelines recommend the development of ST-elevation myocardial infarction (STEMI) networks at community, regional and/or national level to ideally offer primary coronary angioplasty, or at least the best available STEMI care to all patients. However, there is a discrepancy between this clinical recommendation and daily practice, with no coordinated care for STEMI patients in many regions of the world. While this can be a consequence of lack of resources, in reality it is more frequently a lack of organisational power.

View Article and Find Full Text PDF

This article reports the outcome of a project to develop and assess a predictive model of vulnerability indicators for COVID-19 infection in Los Angeles County. Multiple data sources were used to construct four indicators for zip code tabulation areas: (1) pre-existing health condition, (2) barriers to accessing health care, (3) built environment risk, and (4) the CDC's social vulnerability. The assessment of the indicators finds that the most vulnerable neighborhoods are characterized by significant clustering of racial minorities.

View Article and Find Full Text PDF

Background: Thailand is one of the most rapidly aging countries in Asia. Traditional family-based care, which has been the basis of most care for older people, is becoming unsustainable as families become smaller. In addition, women tend to be adversely affected as they still form the bulk of caregivers for older people, and many are likely to exit the labor market in order to provide care.

View Article and Find Full Text PDF

Background: Ventricular cystic masses are uncommon. Elucidating the cause is essential for early directed therapy and prevention of complications. We present two cases of ventricular cystic masses, one in each ventricle, after myocardial infarction (MI) and ventricular septal rupture (VSR), respectively.

View Article and Find Full Text PDF

Aims: We aimed to update the logistic clinical SYNTAX score to predict 2 year all-cause mortality after contemporary percutaneous coronary intervention (PCI).

Methods And Results: We analyzed 15,883 patients in the GLOBAL LEADERS study who underwent PCI. The logistic clinical SYNTAX model was updated after imputing missing values by refitting the original model (refitted original model) and fitting an extended new model (new model, with, selection based on the Akaike Information Criterion).

View Article and Find Full Text PDF

High-risk "protected" percutaneous coronary intervention (PCI) using mechanical circulatory support (MCS) devices, particularly the Impella axial pump, has emerged as a viable treatment option for high-risk patients with satisfactory clinical outcomes. High-risk and complex interventions have mostly remained within the domain of surgical centers. We report on an early "protected" PCI experience using MCS with the Impella flow pump at a high-volume PCI hospital without on-site surgery.

View Article and Find Full Text PDF

Although drug-eluting stents are still the default interventional treatment of coronary artery disease, drug-coated balloons (DCBs) represent a novel alternative therapeutic strategy in certain anatomic conditions. The effect of DCBs is based on the fast and homogenous transfer of antiproliferative drugs into the vessel wall during single balloon inflation by means of a lipophilic matrix without the use of permanent implants. Although their use is established for in-stent restenosis of both bare-metal and drug-eluting stents, recent randomized clinical data demonstrate a good efficacy and safety profile in de novo small-vessel disease and high bleeding risk.

View Article and Find Full Text PDF

Objective: Patients with advanced coronary artery disease are referred for coronary artery bypass grafting (CABG) and it remains unknown if sleep apnoea is a risk marker. We evaluated the association between sleep apnoea and major adverse cardiac and cerebrovascular events (MACCE) in patients undergoing non-emergent CABG.

Methods: This was a prospective cohort study conducted between November 2013 and December 2018.

View Article and Find Full Text PDF

Background: Amphilimus-eluting stent (AES) is a novel polymer-free drug eluting stent that combines sirolimus with fatty acid as antiproliferative drug and has shown promising results in percutaneous coronary intervention.We evaluated the clinical safety and efficacy of AES in an all-comers South-East Asian registry.

Methods: Between May 2014 to April 2017, 268 patients (88% male, mean age 60.

View Article and Find Full Text PDF

Globally, countries have agreed to pursue the progressive realization of universal health coverage (UHC) and there is now a high level of political commitment to providing universal coverage of essential health services while ensuring that individuals are financially protected against high health spending. The aim of this paper is to help policy-makers think through the progressive realization of UHC. First, the pitfalls of applying global normative expenditure targets in estimating the national revenue required for UHC are discussed.

View Article and Find Full Text PDF

Objective: To estimate the net effect of living in a gentrified neighborhood on probability of having serious psychological distress.

Data Sources: We pooled 5 years of secondary data from the California Health Interview Survey (2011-2015) and focused on southern California residents.

Study Design: We compared adults (n = 43 815) living in low-income and gentrified, low-income and not gentrified, middle- to high-income and upscaled, and middle- to high-income and not upscaled neighborhoods.

View Article and Find Full Text PDF

Background: Price setting and regulation serve as instruments to control volumes of services, while providing incentives for quality, coverage, and efficiency. In recognition of its complexity, many countries have established specific entities to carry out price setting and regulation.

Methods: The aim of the study is to investigate institutions established for health care price setting and regulation and determine how countries have implemented pricing strategies.

View Article and Find Full Text PDF

Background: Data on optimal antiplatelet treatment regimens in patients who undergo multivessel percutaneous coronary intervention (PCI) are sparse.

Objectives: This post hoc study investigated the impact of an experimental strategy (1-month dual antiplatelet therapy [DAPT] followed by 23-month ticagrelor monotherapy) versus a reference regimen (12-month DAPT followed by 12-month aspirin monotherapy) according to multivessel PCI.

Methods: The GLOBAL LEADERS trial is a prospective, multicenter, open-label, randomized controlled trial, allocating all-comer patients in a 1:1 ratio to either the experimental strategy or the reference regimen.

View Article and Find Full Text PDF