Publications by authors named "Anoop N Koshy"

Background And Aims: Atrial fibrillation (AF) is the most common arrhythmia in hypertrophic cardiomyopathy (HCM) and is associated with increased morbidity and mortality. Cardiac myosin inhibitors (CMIs) are novel therapies for obstructive HCM. Recent studies suggested possible increased AF incidence with CMI use despite amelioration of left atrial dysfunction; but data are conflicting across studies.

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Background: The impact of implant depth of the Abbott Navitor intra-annular, self-expanding valve on redo-transcatheter aortic valve replacement (TAVR) feasibility is unknown.

Objectives: The authors sought to determine the feasibility of redo-TAVR and coronary access with Edwards Sapien 3 (S3) valve after initial Navitor valve, based on various implant depths on computed tomography (CT) simulation.

Methods: Using 2050 pre-TAVR CTs of patients with native aortic stenosis, initial Navitor TAVR simulations were done at 3 implant depths (0 mm, 3 mm, and 5 mm), with frame expansion assumed at native annular dimensions and commissural alignment not achievable.

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The EuroSCORE II is a widely used risk stratification tool for estimating perioperative mortality in cardiac surgery. However, its prognostic utility in broader coronary artery disease (CAD) management, including in patients undergoing percutaneous coronary intervention (PCI) or medical therapy, is less well defined. We conducted a retrospective cohort study of patients with complex CAD discussed in a multidisciplinary Heart Team meeting at a tertiary Australian centre (2019-2024).

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Introduction: Patients undergoing liver transplantation may require large volumes of fluid to maintain hemodynamic stability and treat coagulopathy. This study aimed to determine the prevalence of ultra-massive fluid transfusion and to examine its association with clinical outcomes. We defined an ultra-massive fluid transfusion a priori as a transfusion volume of >20 liters of crystalloids, colloids, blood and blood products administered intraoperatively and within the first 24 hours postoperatively.

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Background: Delta-9-tetrahydrocannabinol, a major component of cannabis, causes sympathetic stimulation and endothelial dysfunction. A recent American Heart Association consensus document has outlined cardiovascular risks associated with cannabis use. However, there are limited data surrounding atrial arrhythmias (AA).

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Cardiovascular (CV) disease is a leading cause of postoperative mortality following liver transplantation (LT). The presence of abdominal aortic calcification (AAC) has been linked to CV events in the general population. We sought to investigate whether AAC on routine pre-transplant CT can improve the prediction of coronary artery disease, post-LT major adverse cardiovascular events (MACEs) or long-term mortality.

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Cirrhotic cardiomyopathy (CCM) is an underrecognized risk factor for cardiac events in patients undergoing liver transplantation (LT). Blunted cardiac reserve (BCR) is an emerging indicator of CCM, although it has not been integrated into diagnostic guidelines. This study assesses posttransplant cardiac outcomes and mortality in patients with BCR compared with current CCM diagnostic guidelines, focusing on diastolic indices.

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Background: Asymptomatic severe aortic stenosis (AS) poses a clinical challenge with variations in recommendations for management.

Objectives: We sought to compare contemporary guidelines focusing on asymptomatic AS management and present a summary of contemporary studies on early intervention in these patients.

Methods: Systematic search of electronic databases was conducted with guidelines analyzed using a comparative matrix.

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Background: Percutaneous coronary intervention (PCI) for true bifurcation lesions is associated with a higher risk of adverse clinical events.

Objectives: This study sought to establish a point-based score using clinical and angiographic characteristics in true bifurcation lesions before PCI to predict the risk of major adverse cardiovascular events (MACE).

Methods: A total of 1,896 consecutive patients undergoing PCI for true bifurcation lesions between 2012 and 2019 in our institution were included.

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Introduction: Nonagenarians and centenarians are a growing and vulnerable groups of patients admitted to ICU. There is limited information on their characteristics, outcomes, and complications.

Methods: We performed a scoping review of studies focused on nonagenarians and centenarians admitted to ICU.

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Coarctation of the aorta (CoA) is one of the most common types of congenital heart disease. Unfortunately, there is a high prevalence of hypertension and late cardiovascular mortality in patients with CoA despite successful repair. The growing impact of acquired cardiovascular disease remains a significant concern as the adult congenital heart disease population continues to rapidly expand and age.

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Objective: To develop age-appropriate nonaGEnaRIan And cenTenarian suRgICal (GERIATRIC) risk tool for classifying patients who may or may not develop postoperative complications or die within their index hospital admission.

Background: There are no validated perioperative risk stratification tools for use in nonagenarian and centenarian patients-people aged 90 to 99 years and >100 years.

Methods: In this retrospective observational study, nonagenarians and centenarians undergoing any surgical procedure were profiled.

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Article Synopsis
  • The study evaluates the effectiveness and safety of three calcium modification techniques—rotational atherectomy (RA), orbital atherectomy (OA), and intravascular lithotripsy (IVL)—for treating coronary calcified nodules (CN) with the help of optical coherence tomography (OCT).
  • Among 154 patients examined, the results showed no significant difference in the minimal stent area (MSA) or the incidence of target vessel failure (TVF) after one year across the three techniques. RA had an MSA of 6.23 mm², OA 5.75 mm², and IVL 6.24 mm². The one-year TVF rates were also similar
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Article Synopsis
  • Long-term use of terlipressin, a treatment for hepatorenal syndrome, may improve subclinical cardiac dysfunction in patients with decompensated cirrhosis, as suggested by a study of 22 patients.
  • After 12 weeks of terlipressin infusion, patients showed a significant increase in cardiac output in response to stress, indicating improved cardiac reserve.
  • The study found that while resting cardiac output decreased, the number of patients with impaired cardiac reserve dropped significantly, highlighting terlipressin's potential benefits in managing cardiac health in liver disease.
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Background: Guidelines and international appropriate use criteria increasingly endorse non-invasive stress testing to evaluate patients with suspected chronic coronary disease (CCD). We sought to review the real-world utilisation of non-invasive stress testing and investigate whether their use prior to PCI associates with outcomes in patients with CCD.

Methods: Consecutive patients from a multicentre registry who underwent PCI for CCD between 2006 and 2018 were included.

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Contrast-induced encephalopathy (CIE) is an idiopathic reaction following iodine-contrast dye administration in patients undergoing angiographic procedures. While it has been well-documented following coronary and carotid interventions, literature on CIE following transcatheter aortic valve replacement is limited. We report the multidisciplinary management of 3 patients with CIE following transcatheter aortic valve replacement.

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Managing health care for older adults aged 75 years and older can pose unique challenges stemming from age-related physiological differences and comorbidities, along with elevated risk of delirium, frailty, disability, and polypharmacy. This review is aimed at providing a comprehensive analysis of the management of acute coronary syndromes (ACS) in older patients, a demographic substantially underrepresented in major clinical trials. Because older patients often exhibit atypical ACS symptoms, a nuanced diagnostic and risk stratification approach is necessary.

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Background: It remains unclear whether procedural myocardial infarction (pMI) and spontaneous myocardial infarction (spMI) have a similar impact on prognosis.

Objectives: The aim of this study was to assess mortality after pMI and spMI.

Methods: Patients with chronic coronary syndrome (CCS) and baseline troponin ≤1× the upper reference level (URL) or with acute spMI who underwent percutaneous coronary intervention (PCI) were included.

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Background: An optimal pharmacological strategy for fast-track cardiac anesthesia (FTCA) is unclear. This study evaluated the effectiveness and safety of an FTCA program using methadone and non-opioid adjuvant infusions (magnesium, ketamine, lidocaine, and dexmedetomidine) in patients undergoing coronary artery bypass grafting.

Methods: This retrospective, multicenter observational study was conducted across private and public teaching sectors.

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