Publications by authors named "Benjamin Tan"

Objective: The Brain Care Score (BCS), previously validated to predict the risk of age-related brain diseases, incorporates 12 modifiable risk factors, including blood pressure and laboratory measurements. In the U.S.

View Article and Find Full Text PDF

Patients with symptomatic atherosclerotic internal carotid artery (ICA) or middle cerebral artery (MCA) occlusions face a high risk of recurrent ischaemic stroke despite best medical therapy. Previous trials of extracranial-intracranial (EC-IC) bypass surgery showed no benefit for stroke prevention in this population, but they may have been underpowered. This study evaluates the efficacy of EC-IC bypass surgery in reducing the risk of the composite outcome of stroke or death within 30 days or ipsilateral ischaemic stroke beyond 30 days through 2 years.

View Article and Find Full Text PDF

Background: Cerebral small-vessel disease encompasses a spectrum of magnetic resonance imaging features reflecting microvascular pathology in ischemic stroke. Among these, white matter hyperintensities (WMHs) and cerebral microbleeds (CMBs) are the most widely studied. While both are well established as risk factors for cognitive decline in patients with acute ischemic stroke (AIS), their prognostic value for vascular events and death after AIS remains unclear.

View Article and Find Full Text PDF

Medium vessel occlusion (MeVO) contributes significantly to acute ischemic stroke (AIS). The hypoperfusion intensity ratio (HIR), reflecting collateral circulation via the ratio of Tmax >10s to Tmax >6s volumes, predicts infarct progression in large-vessel occlusions but is unstudied in MeVOs. In this multicenter, multinational retrospective study, we evaluated consecutive patients with MeVO who underwent mechanical thrombectomy with or without intravenous thrombolysis.

View Article and Find Full Text PDF

Background & Aims: Patients with advanced hepatocellular carcinoma (HCC) generally experience poor outcomes despite current therapies; alternative treatments are needed. ADP-A2AFP is an investigational autologous T-cell therapy with an affinity-enhanced T-cell receptor (TCR) targeting alpha-fetoprotein (AFP).

Methods: We describe a phase I, open-label, first-in-human clinical trial of ADP-A2AFP (NCT03132792) in human leukocyte antigen-eligible participants with AFP-expressing HCC (or other tumor) not amenable to transplant/resection that progressed on, were intolerant to, or refused prior systemic therapy.

View Article and Find Full Text PDF

Background: Emergency laparotomy is performed for a wide range of life-threatening conditions and is associated with significant morbidity and mortality. Risk prediction models facilitate accurate communication of operative risk with patients and relatives, in addition to benchmarking unit outcomes. Greater understanding of the impact of sarcopenia or myosteatosis will encourage the adoption of routine radiological reporting of body composition and the incorporation of skeletal muscle gauge (SMG) into risk prediction models.

View Article and Find Full Text PDF

ObjectiveMechanical thrombectomy (MT) is well-established for the treatment of acute ischemic stroke (AIS) from large vessel occlusion (LVO), with growing data supporting the expansion to distal and medium vessel occlusions (DMVO). Despite successful recanalization in DMVO, certain patients still experience poor long-term clinical outcomes, prompting our study to comprehensively explore pre-MT factors influencing outcome despite excellent recanalization (final modified Thrombolysis in Cerebral Infarction [mTICI] score ≥2c).MethodsWe retrospectively examined data from patients who consecutively underwent MT for a primary middle cerebral artery (MCA) DMVO across 37 centers in North America, Asia, and Europe.

View Article and Find Full Text PDF

Background: Olfactory impairment (OI) is associated with poor ageing outcomes. While cross-sectional studies found a high prevalence of OI among patients with neurodegenerative diseases, the temporal relationship remains unclear. This meta-analysis aims to synthesise the longitudinal association of OI with cognitive decline (CD).

View Article and Find Full Text PDF

Background: Recent clinical studies have alluded to an association between chronic rhinosinusitis (CRS) and cognition, possibly mediated by local and systemic neuroinflammation. This meta-analysis seeks to clarify the association of CRS diagnosis or treatment with cognitive function and dementia.

Methodology: Two blinded reviewers searched PubMed, Embase, and Scopus for studies comparing cognitive function (global/domain-specific) or dementia in patients with/without CRS or pre/post-CRS treatment.

View Article and Find Full Text PDF

Objective: Mechanical thrombectomy (MT) is well established for large-vessel occlusion (LVO) strokes, but its safety in distal and medium-vessel occlusions (DMVOs) requires further investigation. This study analyzed the relationship between procedural approaches, petechial hemorrhage (PetH), and clinical outcomes in DMVO thrombectomy, with particular attention to technical considerations and the complex interplay between tissue injury and hemorrhagic complications.

Methods: A retrospective cohort study was conducted on DMVO stroke patients treated with MT at 37 stroke centers worldwide from 2016 to 2024.

View Article and Find Full Text PDF

Background: The incidence of left ventricular thrombus (LVT), a significant complication postacute myocardial infarction (AMI), has seen a decline in the percutaneous coronary intervention era. Patients may not undergo coronary revascularization due to medical contraindications or patient preference.

Objectives: This study compared post-AMI LVT patients treated with or without revascularization.

View Article and Find Full Text PDF

The heart-brain axis involves complex interactions between the cardiovascular and nervous systems via a network of cortical and subcortical structures working with the autonomic nervous system and intracardiac nervous system. Heart-brain interactions may be divided into 2 broad categories: cardiac effects of neurological disease and neurological effects of cardiac disease. The pathogenesis of neurogenic cardiac effects is thought to involve a neurogenic cascade where sudden shifts in autonomic balance lead to an exaggerated catecholamine release.

View Article and Find Full Text PDF

PurposeTo investigate the trust levels in health information sources from a United States (U.S.) sample, and to examine the relationships between trust in healthcare professionals (HCPs) and perceptions of modifiability of dementia and stroke risks through maintaining or changing lifestyle habits.

View Article and Find Full Text PDF

Objective: Retrograde cricopharyngeal dysfunction (RCPD) is defined by the inability to burp, sometimes with gurgling, chest/abdominal discomfort, and excessive flatulence. Treatment involves cricopharyngeal Botulinum Toxin-A (BonT-A) injection. However, the optimal dose and route are unclear.

View Article and Find Full Text PDF

Background: The Brain Care Score (BCS) was developed in partnership with patients and practitioners to convey actionable knowledge to individuals everywhere that can motivate change in health-related behaviors and thereby reduce the risk of dementia, stroke, and late-life depression (LLD). Because diseases outside the brain share modifiable risk factors with dementia, stroke, and LLD, we investigated the associations of the BCS with other common age-related diseases, including cardiovascular disease (CVD) and cancer.

Methods: Among all UK Biobank (UKB) participants with complete BCS data, we performed Cox proportional hazard regression analyses between the BCS at baseline and incident CVD (ischemic heart disease, stroke, and heart failure) and the three most common cancer types (lung, colorectal, and breast cancer), adjusted for sex and stratified by age.

View Article and Find Full Text PDF

Background: The use of complementary and alternative medicine (CAM) is common among individuals with underlying chronic illnesses.

Objective: This systematic review and meta-analysis investigated the global prevalence and patterns of CAM use among individuals with chronic kidney disease (CKD).

Search Strategy: PubMed, Embase, and Cumulative Index to Nursing and Allied Health Literature Plus were searched from inception until 26th February 2024.

View Article and Find Full Text PDF

BackgroundEndovascular therapy (EVT) for stroke due to distal or medium vessel occlusion (DMVO) is safe. Due to the distinct anatomical characteristics of DMVOs, further evaluation of EVT is crucial to determine which devices may yield better outcomes.MethodsA retrospective analysis of adults with DMVO treated in 37 centers (11 countries) was queried.

View Article and Find Full Text PDF

Background: Upper airway surgery for obstructive sleep apnea (OSA) offers an alternative to CPAP, but its impact on weight changes is poorly studied.

Purpose: To systematically review published literature on the relationship between surgical intervention for OSA and changes in body mass index (BMI).

Methods: A literature search was conducted from 2013-2024 in five databases.

View Article and Find Full Text PDF

Objectives: The aim of this study was to characterize the clinical, genetic, and radiologic presentation of a patient with gene duplication, including the duplication of the silencer region.

Methods: A patient who presented with muscle stiffness and constipation underwent comprehensive clinical and imaging evaluations, followed by next-generation whole-genome sequencing and optical genome mapping. In the subsequent year, the proband reported additional symptoms of muscle spasms, difficulty of relaxation of the anal sphincter, and stiffness in movements.

View Article and Find Full Text PDF

Background: Accurate prediction of hospital emergency department (ED) patient visits and acuity levels have potential to improve resource allocation including manpower planning and hospital bed allocation. Internet search data have been used in medical applications like disease pattern prediction and forecasting ED volume. Past studies have also found stock market price positively correlated with ED volume.

View Article and Find Full Text PDF

At least 45% of dementia and 60% of stroke cases are due to modifiable risk factors and could in part be prevented through healthy behavior. This cross-sectional study clustered and characterized a U.S.

View Article and Find Full Text PDF

Background: Recurrent ischemic stroke (IS) disproportionately affects individuals in their most productive years, contributing to significant morbidity and mortality. Despite its growing importance, data on this critical population remain limited.

Aim: The aim of the study is to characterize rates and factors associated with recurrent IS in young adults.

View Article and Find Full Text PDF

Whether stroke survivors can meet risk factor recommendations set by guidelines is unknown. We investigated the proportion of stroke survivors that met the secondary prevention guideline recommendations, analyzed the trends over time, and assessed the impact on mortality. Using cross-sectional data on stroke survivors from the National Health and Nutrition Examination Survey (NHANES) from 1999-2018, we determined the proportion of stroke survivors who met guideline recommendations.

View Article and Find Full Text PDF