Publications by authors named "Dawn Abbott"

Background: There are limited large-scale data on the outcomes of patients with cardiogenic shock (CS) transferred to hub centers. This study aimed to compare the characteristics and outcomes of transferred patients with CS versus those who were not transferred.

Methods: Adults (aged ≥18 years) with a primary or secondary diagnosis of CS were identified from the Nationwide Readmissions Database (2016-2020) and stratified by transfer status.

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The evidence base evaluating the use of mechanical circulatory support (MCS) devices in complex, high-risk percutaneous coronary intervention is evolving from a small number of randomised clinical trials to incorporate an amassing body of real-world data. Due to both the growing incidence of the procedures and the limitations of the evidence, there is wide variability in the use of MCS, and the benefits are actively debated. The goal of this review is to perform an integrated analysis of randomised and non-randomised studies which have informed clinical and regulatory decision-making in contemporary clinical practice.

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Background: In-hospital mortality risk prediction is an important tool for benchmarking quality and patient prognostication. Given changes in patient characteristics and treatments over time, a contemporary risk model for patients with acute myocardial infarction (MI) is needed.

Methods: Data from 313 825 acute MI hospitalizations between January 2019 and December 2020 for adults aged ≥18 years at 784 sites in the National Cardiovascular Data Registry Chest Pain-MI Registry were used to develop a risk-standardized model to predict in-hospital mortality.

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Background: Clinical guidelines have concluded that there are insufficient data to provide recommendations for the hemoglobin threshold for the use of red cell transfusion in patients with acute myocardial infarction (MI) and anemia. After the recent publication of the Myocardial Infarction and Transfusion (MINT) trial, we performed an individual patient-level data meta-analysis to evaluate the effect of restrictive versus liberal blood transfusion strategies.

Methods: We conducted searches in major databases.

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There are limited and conflicting data on sex and urban-rural disparities in outcomes of patients with pulmonary embolism (PE) in the reproductive age group. Our object was to assess sex disparities in the reproductive age group cohort. All adult non-elective admissions in the reproductive age group (18-49 years) with a primary diagnosis of PE and with no missing sex/age data were identified using the National Inpatient Sample.

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ST-elevation myocardial infarction (STEMI) remains a leading cause of morbidity and mortality in the United States. Timely reperfusion with primary percutaneous coronary intervention is associated with improved outcomes. The Society for Cardiovascular Angiography & Interventions puts forth this expert consensus document regarding best practices for cardiac catheterization laboratory team readiness, arterial access with an algorithm to help determine proper arterial access in STEMI, and diagnostic angiography.

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Background: Transfemoral (TF) access is the preferred approach for transcatheter aortic valve replacement (TAVR). Limited data exist regarding the outcomes of intravascular lithotripsy (IVL)-assisted TF TAVR in patients with peripheral artery disease.

Objectives: This study sought to examine contemporary characteristics, trends, and outcomes of IVL TAVR in the United States.

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Article Synopsis
  • The cardiac intensive care unit is experiencing a shift as it adapts to an aging population with more complex health issues, necessitating a focus on multidisciplinary teams (MDTs) for better patient outcomes.
  • These MDTs consist of various healthcare professionals, including physicians from different specialties, working collaboratively to implement guidelines, enhance communication, and develop effective care plans for critically ill patients.
  • The document aims to explore the evolving nature of patient care within cardiac intensive care, covering aspects like team composition, healthcare delivery improvements, training requirements, and future directions for MDTs in this field.
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Article Synopsis
  • * Treatment focuses on improving heart function and may include temporary mechanical support when standard methods fail, but this comes with risks such as bleeding and organ failure.
  • * The review discusses current anticoagulation strategies to prevent complications while balancing the risks of bleeding and clotting in patients with CS using mechanical support.
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Background: The optimal hemoglobin threshold to guide red blood cell (RBC) transfusion for patients with acute myocardial infarction (MI) and anemia is uncertain.

Objective: To estimate the efficacy of 4 individual hemoglobin thresholds (<10 g/dL [<100 g/L], <9 g/dL [<90 g/L], <8 g/dL [<80 g/L], and <7 g/dL [<70 g/L]) to guide transfusion in patients with acute MI and anemia.

Design: Prespecified secondary analysis of the MINT (Myocardial Ischemia and Transfusion) trial using target trial emulation methods.

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Introduction: Cardiogenic shock is severe circulatory failure that results in significant in-hospital mortality, related morbidity, and economic burden. Patients with cardiogenic shock are at high risk for atrial and ventricular arrhythmias, particularly within the subset of patients with an overlap of cardiogenic shock and cardiac arrest.

Areas Covered: This review article will explore the prevalence, definition, management, and outcomes of common arrhythmias in patients with cardiogenic shock.

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Introduction: The role of palliative care services in patients with cardiac arrest complicating acute pulmonary embolism has been infrequently studied.

Methods: All adult admissions with pulmonary embolism complicating cardiac arrest were identified using the National Inpatient Sample (2016-2020). The primary outcome of interest was the utilization of palliative care services.

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Article Synopsis
  • The study investigates whether physiology-guided complete revascularization is better than culprit lesion-only PCI in patients with myocardial infarction and multivessel disease.
  • It analyzes data from 4,849 patients, finding that the former approach results in lower cardiovascular death and fewer repeat revascularizations over a follow-up of 2.5 years.
  • However, there were no significant differences in overall mortality, MI, stent thrombosis, or kidney injury risks between the two methods.
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Background: The MINT trial (Myocardial Ischemia and Transfusion) raised concern for harm from a restrictive versus liberal transfusion strategy in patients with acute myocardial infarction (MI) and anemia. Type 1 and type 2 MI are distinct pathophysiologic entities that may respond differently to blood transfusion. This analysis sought to determine whether the effects of transfusion varied among patients with a type 1 or a type 2 MI and anemia.

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Article Synopsis
  • * Analysis showed a decline in AMI hospitalizations and revascularization procedures, along with an increase in in-hospital mortality rates in 2020 compared to 2019.
  • * The findings suggest that the pandemic significantly affected AMI outcomes, indicating a need for further research to understand the factors leading to higher mortality rates during such crises.
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Objective: A critical goal in the care of patients with peripheral artery disease (PAD) is to optimize their health status; that is, their symptoms, function, and quality of life. Social support has been proposed to be a predictor of disease-specific health status in patients with PAD. However, the prevalence of low perceived social support, the association with health status outcomes, and the interaction with other biopsychosocial variables, is unknown.

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The prevalence of calcification in obstructive coronary artery disease is on the rise. Percutaneous coronary intervention of these calcified lesions is associated with increased short-term and long-term risks. To optimize percutaneous coronary intervention results, there is an expanding array of treatment modalities geared toward calcium modification prior to stent implantation.

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Article Synopsis
  • The field of interventional cardiology (IC) has seen significant advancements and improved training programs over the last 40 years, including accredited fellowship programs and subspecialty certification.
  • Despite these improvements, the application process for IC fellowships has been chaotic and inconsistent, causing stress and pressure on applicants due to competitive recruitment practices.
  • A task force from the Society for Cardiovascular Angiography & Interventions has initiated a grassroots movement to create a national Match system for IC fellowships, aiming to establish fairness and equity in the application process.
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Article Synopsis
  • Intravascular lithotripsy (IVL) is effective and safe for preparing calcified lesions before drug-eluting stent placement, particularly in women, compared to other treatment options which can lead to more complications.
  • A study analyzing data from 448 patients found that women were generally older, less likely to smoke, and had smaller and shorter lesions than men, yet resulted in similar angiographic outcomes and complication rates post-procedure.
  • Long-term results showed no significant differences in major adverse cardiac events or target lesion failure between women and men at 1 year, indicating that IVL has comparable safety and effectiveness across sexes.
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