Publications by authors named "Richard Schofield"

Objectives: We conducted an implementation planning process during the pilot phase of a pragmatic trial, which tests an intervention guided by artificial intelligence (AI) analytics sourced from noninvasive monitoring data in heart failure patients (LINK-HF2).

Materials And Methods: A mixed-method analysis was conducted at 2 pilot sites. Interviews were conducted with 12 of 27 enrolled patients and with 13 participating clinicians.

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Background: Recent analyses of the volume-outcome relationship for percutaneous coronary intervention (PCI) have suggested a less robust association than previously reported. It is unknown if novel factors such as lifetime operator experience influence this relationship.

Objectives: To assess the relationship between annual volumes and outcomes for PCI and determine whether lifetime operator experience modulates the association.

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Atherosclerotic cardiovascular disease (ASCVD) remains the leading cause of morbidity and mortality in the United States (U.S.) and incurs significant cost to the healthcare system.

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Importance: There is a paucity of data regarding secondary prevention care disparities in women with premature and extremely premature atherosclerotic cardiovascular disease (ASCVD), defined as an ASCVD event at 55 years or younger and 40 years or younger, respectively.

Objective: To evaluate sex-based differences in antiplatelet agents, any statin, high-intensity statin (HIS) therapy, and statin adherence in patients with premature and extremely premature ASCVD.

Design, Setting, And Participants: This was a cross-sectional, multicenter, nationwide VA health care system-based study with patients enrolled in the Veterans With Premature Atherosclerosis (VITAL) registry.

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Purpose: We investigated facility-level variation in the use and adherence with antiplatelets and statins among patients with premature and extremely premature ASCVD.

Methods: Using the 2014-2015 nationwide Veterans wIth premaTure AtheroscLerosis (VITAL) registry, we assessed patients with premature (age at first ASCVD event: males < 55 years, females < 65 years) and extremely premature ASCVD (< 40 years). We examined frequency and facility-level variation in any statin, high-intensity statin (HIS), antiplatelet use (aspirin, clopidogrel, ticagrelor, prasugrel, and ticlopidine), and statin adherence (proportion of days covered ≥ 0.

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Background: Professional society consensus statements articulate the clinical and anatomic complexity of patients that may undergo percutaneous coronary intervention (PCI) without on-site cardiothoracic surgery, although compliance with these recommendations has not been assessed. We sought to evaluate the clinical and anatomic complexity of patients undergoing PCI with and without cardiothoracic surgery on-site.

Methods: We identified all patients undergoing PCI in the Veterans Affairs health care system between October 2009 and September 2017.

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Background: Implantable cardiac sensors have shown promise in reducing rehospitalization for heart failure (HF), but the efficacy of noninvasive approaches has not been determined. The objective of this study was to determine the accuracy of noninvasive remote monitoring in predicting HF rehospitalization.

Methods: The LINK-HF study (Multisensor Non-invasive Remote Monitoring for Prediction of Heart Failure Exacerbation) examined the performance of a personalized analytical platform using continuous data streams to predict rehospitalization after HF admission.

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Objectives: The aim of this study was to evaluate temporal trends in characteristics and outcomes among patients referred for invasive coronary procedures within a national health care system for veterans.

Background: Coronary angiography and percutaneous coronary intervention remain instrumental diagnostic and therapeutic interventions for coronary artery disease.

Methods: All coronary angiographic studies and interventions performed in U.

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Background: Coronary artery disease is highly prevalent in patients with stroke, but because revascularization does not improve major clinical outcomes in patients with stable coronary artery disease relative to intensive medical therapy, routine evaluation for this disease is not warranted in stroke patients. However, it might be warranted in patients destined to undergo vigorous physical therapy. The Locomotor Experience Applied Post-Stroke study, a randomized controlled trial of 408 participants that tested the relative efficacy of two rehabilitation techniques on functional walking level, provided the opportunity to address this question.

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Lemierre's disease is characterized by sepsis, often with an oropharyngeal source, secondary septic emboli and internal jugular vein thrombosis (Lancet 1:701-3, 1936. Clin Microbiol Rev 20(4):622-59, 2007). Septic emboli affecting many bodily sites have been reported, including the lungs, joints, bones, and brain.

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Objectives: Bleeding is the most common complication of HeartMate II and is partially attributable to platelet dysfunction; however, antiplatelet therapy is arbitrary in most centres. We investigated how antiplatelet therapy adjustment with thrombelastography affects late-onset bleeding.

Methods: Thrombelastography was used to adjust antiplatelet therapy in 57 HeartMate II recipients.

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Objective: To assess the relationship between exercise tolerance test (ETT) performance at 6 weeks poststroke and subsequent performance in a treadmill and overground locomotor training program (LTP).

Design: Prospective cohort study.

Setting: Exercise testing laboratory in either a primary care hospital or outpatient clinic.

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Objective: Leukocyte count has been associated with blood pressure, hypertension, and hypertensive complications. We hypothesized that polymorphisms in the CXCL5 gene, which encodes the neutrophilic chemokine ENA-78, are associated with blood pressure in cardiovascular disease (CVD)-free adults and that these polymorphisms are functional.

Methods And Results: A total of 192 community-dwelling participants without CVD or risk equivalents were enrolled.

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The New York Heart Association class IV heart failure patient represents a very sick patient population with a poor 6-month survival rate. With appropriate selection and timing, left ventricular assist devices can provide improved outcomes while these patients are supported for bridge to heart transplant or destination therapy. As the number of heart failure patients supported by left ventricular assist devices increases, physicians will need to be familiar with postoperative chronic issues (such as right ventricular failure, infection, hypertension, atrial fibrillation, bleeding, and thromboembolic events) that can affect the function of these devices.

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Multiple clinical trials support the use of implantable cardioverter-defibrillators (ICDs) for prevention of sudden cardiac death in patients with heart failure (HF). Unfortunately, several complicating issues have arisen from the universal use of ICDs in HF patients. An estimated 20% to 35% of HF patients who receive an ICD for primary prevention will experience an appropriate shock within 1 to 3 years of implant, and one-third of patients will experience an inappropriate shock.

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Background: Coenzyme Q10 (CoQ10) is a provitamin synthesized via the HMG-CoA reductase pathway, and thus may serve as a potential marker of intrinsic HMG-CoA reductase activity. HMG-CoA reductase inhibitors (statins) decrease CoQ10, although it is unclear whether this is due to reductions in lipoproteins, which transport CoQ10.

Objectives: We evaluated whether baseline plasma CoQ10 concentrations predict the lipid-lowering response to high-dose atorvastatin, and to what extent CoQ10 changes following atorvastatin therapy depend on lipoprotein changes.

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Constrictive pericarditis is an infrequent disorder. We report the case of a 52-year-old man with constrictive pericarditis with an uncommon anterior associated pericardial mass. Upon diagnosis of constrictive pericarditis, the patient underwent pericardectomy and resection of the mass.

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