Structural and Compositional Optimization of Fe-Co-Ni Ternary Amorphous Electrocatalysts for Efficient Oxygen Evolution in Anion Exchange Membrane Water Electrolysis.

Anion exchange membrane water electrolysis (AEMWE) offers a sustainable path for hydrogen production with advantages such as high current density, dynamic responsiveness, and low-cost electrocatalysts. However, the development of efficient and durable oxygen evolution reaction (OER) electrocatalysts under operating conditions is crucial for achieving the AEMWE. This study systematically investigated Fe-Co-Ni ternary amorphous electrocatalysts for the OER in AEMWE through a comprehensive material library system comprising 21 composition series.

Increasing Multiorgan Heart Transplantations From Donation After Circulatory Death Donors in the United States.

Introduction: Donation after circulatory death (DCD) donors are becoming an important source of organs for heart-transplantation (HT), but there are limited data regarding their use in multiorgan-HT.

Methods: Between January 2020 and June 2023, we identified 87 adult multiorgan-HTs performed using DCD-donors [77 heart-kidney, 6 heart-lung, 4 heart-liver] and 1494 multiorgan-HTs using donation after brain death (DBD) donors (1141 heart-kidney, 165 heart-lung, 188 heart-liver) in UNOS. For heart-kidney transplantations (the most common multiorgan-HT combination from DCD-donors), we also compared donor/recipient characteristics, and early outcomes, including 6-month mortality using Kaplan-Meier (KM) and Cox hazards-ratio (Cox-HR).

Early optical coherence tomography evaluation of donor-transmitted atherosclerosis and cardiac allograft vasculopathy: insights from a prospective, single-center study.

Background: The impact of donor transmitted atherosclerosis as assessed by intravascular ultrasound on development and progression of cardiac allograft vasculopathy (CAV) after heart transplantation (HT) remains poorly defined in contemporary practice. In this exploratory analysis, we sought to assess the prognostic role of early qualitative assessment of donor artery morphology using optical coherence tomography (OCT) as a more sensitive imaging modality.

Methods: HT recipients were prospectively enrolled for baseline OCT imaging of the left anterior descending coronary artery.

The Interaction of Amiodarone and Continuous-flow Left Ventricular Assist Device Use in Risk of Severe Primary Graft Dysfunction Following Heart Transplantation.

Background: Primary graft dysfunction (PGD) increases morbidity and mortality after heart transplant. Here we investigated (1) the association of continuous-flow left ventricular assist device (CF-LVAD), amiodarone, and severe PGD and (2) the safety of amiodarone discontinuation in CF-LVAD patients.

Methods: Retrospective, single-center study of heart transplant recipients was conducted to investigate the association of risk factors and severe PGD.

Cardiac Sympathetic Denervation for Refractory Ventricular Arrhythmia in Continuous-Flow Left Ventricular Assist Device.

Cardiac sympathetic denervation has been shown to reduce sustained ventricular arrhythmias and implantable cardioverter-defibrillator shocks by inhibiting sympathetic outflow to the heart. We describe the first case to our knowledge of cardiac sympathetic denervation in the left ventricular assist device population. ().

Feasibility of high-intensity interval training in patients with left ventricular assist devices: a pilot study.

Aims: Patients with left ventricular assist device (LVAD) suffer from persistent exercise limitation despite improvement of their heart failure syndrome. Exercise training (ET) programmes to improve aerobic capacity have shown modest efficacy. High-intensity interval training (HIIT), as an alternative to moderate continuous training, has not been systematically tested in this population.

Relation of Peripheral Venous Pressure to Central Venous Pressure in Patients With Heart Failure, Heart Transplant, and Left Ventricular Assist Device.

Peripheral venous pressure (PVP) monitoring is a noninvasive method to assess volume status. We investigated the correlation between PVP and central venous pressure (CVP) in heart failure (HF), heart transplant (HTx), and left ventricular assist device (LVAD) patients undergoing right heart catheterization (RHC). A prospective, cross-sectional study examining PVP in 100 patients from October 2018 to January 2020 was conducted.

Chagas Disease in the New York City Metropolitan Area.

Background: Chagas disease, caused by the parasite , once considered a disease confined to Mexico, Central America, and South America, is now an emerging global public health problem. An estimated 300 000 immigrants in the United States are chronically infected with However, awareness of Chagas disease among the medical community in the United States is poor.

Methods: We review our experience managing 60 patients with Chagas disease in hospitals throughout the New York City metropolitan area and describe screening, clinical manifestations, EKG findings, imaging, and treatment.

Predicted heart mass-based size matching among recipients with moderate pulmonary hypertension: Outcomes and sex effect.

Background: There is a lack of evidence to guide appropriate donor sizing in recipients with moderate pulmonary hypertension (pHTN) awaiting heart transplantation (HTx). It is common practice to oversize donor hearts for such recipients to prevent post-operative right ventricular failure. Therefore, our objective was to determine if oversizing in pre-transplant moderate pHTN provides a survival advantage.

Cardiac Transplantation Using Hearts With Transient Dysfunction: Role of Takotsubo-Like Phenotype.

Background: The impact of different types of regional wall motion abnormalities (RWMAs), including the Takotsubo syndrome-like (TTS-like) phenotype, on posttransplant outcomes when using donor hearts with transient left ventricular systolic dysfunction (LVSD) is unknown. We evaluated the prevalence, clinical characteristics, and prognostic association of different RWMAs including TTS-like hypokinesis and posttransplant outcomes when using donor hearts with transient LVSD.

Methods: From all adult (≥18 years) heart transplants in United Network of Organ Sharing between January 2007 and September 2015, we identified 472 donor hearts with improving or transient LVSD, defined as left ventricular ejection fraction ≤ 40% on initial transthoracic echocardiogram (TTE) that improved to ≥50% on follow-up TTE during donor evaluation.

Utilization rates and clinical outcomes of hepatitis C positive donor hearts in the contemporary era.

Background: Hepatitis C virus (HCV) donors should be categorized as HCV-viremic (antibody [Ab] negative or positive/Nucleic Acid testing [NAT] positive) or HCV Abnonviremic (Ab/NAT). Whereas recipients of hearts from HCV-viremic donors will develop viremia but can be cured of HCV shortly after transplant with direct-acting antivirals (DAAs), recipients of hearts from HCV Ab nonviremic donors are highly unlikely to become viremic or require DAAs. Given this important difference in risk, we assessed the utilization trends and post-heart-transplantation outcomes of HCV-naive (Ab/NAT), HCV-viremic, and HCV Ab nonviremic donor hearts.

Continuous-Flow Left Ventricular Assist Device Survival Improves With Multidisciplinary Approach.

Background: Continuous-flow left ventricular assist devices have revolutionized the management of advanced heart failure. Device complications continue to limit survival, but enhanced management strategies have shown promise. This study compared outcomes for HeartMate II recipients before and after implementation of a multidisciplinary continuous support heart team (HTMCS) strategy.

Outcomes of heart transplantation in patients with human immunodeficiency virus.

Human immunodeficiency virus-positive (HIV+) patients are not routinely offered heart transplantation (HT) due to lack of adequate outcomes data. Between January 2004 and March 2017, we identified 41 adult (≥18 years) HT recipients with known HIV+ serostatus at the time of transplant in UNOS and evaluated post-HT outcomes. Overall, Kaplan-Meier (KM) estimates of survival at 1 and 5 years were 85.

Hospital mortality and thirty day readmission among patients with non-acute myocardial infarction related cardiogenic shock.

Background: Cardiogenic shock (CS) in absence of acute myocardial infarction (AMI) has significant morbidity and mortality. This population of patients has been excluded from prior major randomized trials and observational studies.

Methods: We included patients with CS in absence of AMI from the 2013-14 HCUP's National Readmission Database.

Spontaneous coronary artery dissection in a postpartum e-cigarette smoker.

Spontaneous coronary artery dissection (SCAD) is a rare but lethal cause of acute coronary syndrome that occurs in young women during the peripartum/postpartum periods. We present a case of a 41-year-old woman with no significant medical history, but was a habitual e-cigarette smoker who presented with atypical chest pain 2 weeks after an uncomplicated delivery while breast feeding. The patient was found to have elevated cardiac enzymes and ST segment elevations in the anterior leads.

Association of centre volume and in-hospital mortality in heart failure hospitalisations.

Background: Centre volume is an important determinant of outcomes in patients requiring complex medical treatments or surgical procedures. Heart failure hospitalisation (HFH) has become an increasingly complex and resource intensive clinical event. We evaluated the effect of centre volume on mortality and costs in patients with HFH.

Donor Troponin and Survival After Cardiac Transplantation: An Analysis of the United Network of Organ Sharing Registry.

Background: Despite a limited supply of organs, only 1 in 3 potential donor hearts is accepted for transplantation. Elevated donor troponin levels have generally been considered a contraindication to heart transplantation; however, the data supporting this practice are limited.

Methods And Results: We identified 10 943 adult (≥18 years) heart transplant recipients in the United Network of Organ Sharing (UNOS) database with preserved donor left ventricular ejection fraction (≥50%) and where peak donor troponin I values were available.

Frailty Assessment in Advanced Heart Failure.

Background: Several studies have recently demonstrated the value of frailty assessment in a general heart failure (HF) population; however, it is unknown whether these findings are also applicable in advanced HF. We investigated the utility of frailty assessment and its prognostic value in elderly patients with advanced HF.

Methods: Forty consecutive elderly subjects aged ≥65 years, with left ventricular ejection fraction ≤35%, New York Heart Association class III or IV, and a 6-minute walk test <300 m were enrolled from the HF clinic at Montefiore Medical Center between October 2012 and July 2013.

Readmissions after ventricular assist device: etiologies, patterns, and days out of hospital.

Background: Scarce literature exists describing the patterns of readmission after continuous flow left ventricular assist device (CF-LVAD) implantation. These carry significant cost and quality of life implications. We sought to describe the etiology and pattern of readmission among patients receiving CF-LVADs.

Combining neurohormonal blockade with continuous-flow left ventricular assist device support for myocardial recovery: a single-arm prospective study.

Background: Combining mechanical unloading by a continuous-flow left ventricular assist device (CF-LVAD) and neurohormonal blockade with heart failure medications (HFMED) is an underexplored clinical strategy to promote recovery of cardiac function in patients with advanced heart failure (HF).

Methods: We implemented a clinical protocol to achieve maximal neurohormonal blockade after placement of a CF-LVAD and assessed its utility in an LVAD weaning (6,200 rpm) study. Thirty-four subjects were enrolled after CF-LVAD and were managed with aggressive, bi-weekly up-titration of HFMED.

Improved exercise performance and skeletal muscle strength after simulated altitude exposure: a novel approach for patients with chronic heart failure.

Background: Adaptation to altitude leads to beneficial physiologic changes that improve oxygen delivery and utilization by the periphery. Athletes have used simulated altitude enclosures as part of their training regimen to improve exercise performance. We hypothesized that changes due to acclimatization would also be beneficial for patients with heart failure (HF).

Outcomes of cardiac transplantation in septuagenarians.

Background: Cardiac transplantation in many centers is programmatically limited to patients aged younger than 70 years. We investigated the trends and outcomes for cardiac transplantation in recipients aged 70 years and older in the United States.

Methods: De-identified data were provided by United Network of Organ Sharing.

[Exploring the nature of caring in Hwa-Byung--transpersonal Caring-Healing Model].

Unlabelled: Hwa-Byung(HB) has been categorized as a Korean culture-bound syndrome that is prevalent in married women of low socioeconomic status.

Purpose: The Purpose of the study was to search for the essence of HB and a caring-healing process of HB. Then the research result discusses whether the Transpersonal Caring-Healing Model has been congruent with it.

Differential inhibition of endothelial cell proliferation and migration by urokinase subdomains: amino-terminal fragment and kringle domain.

The serine protease urokinase-type plasminogen activator (uPA) is implicated in pericellular proteolysis in a variety of physiological and pathological processes including angiogenesis and tumor metastasis. The kringle domain of uPA (UK1) has proven to be an anti-angiogenic molecule with unknown mechanism and amino terminal fragment of uPA (u-ATF) with additional growth factor-like domain can be used for blocking interaction of uPA and uPA receptor. Here, we compared anti-angiogenic activities of these two molecules in vitro and in vivo.