Publications by authors named "Russell Davis"

Graphical perception studies typically measure visualization encoding effectiveness using the error of an "average observer", leading to canonical rankings of encodings for numerical attributes: e.g., position area angle volume.

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Usual interstitial pneumonia (UIP) is the defining morphology of idiopathic pulmonary fibrosis (IPF). Guidelines for IPF diagnosis conditionally recommend surgical lung biopsy for histopathology diagnosis of UIP when radiology and clinical context are not definitive. A "molecular diagnosis of UIP" in transbronchial lung biopsy, the Envisia Genomic Classifier, accurately predicted histopathologic UIP.

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Objectives: Prolonged ECG monitoring is clinically useful to detect unknown atrial fibrillation (AF) in stroke survivors. The diagnostic yield of prolonged ECG monitoring in other patient populations is less well characterised. We therefore studied the diagnostic yield of prolonged Holter ECG monitoring for AF in an patient cohort referred from primary care or seen in a teaching hospital.

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Background: In the appropriate clinical setting, the diagnosis of idiopathic pulmonary fibrosis (IPF) requires a pattern of usual interstitial pneumonia to be present on high-resolution chest CT (HRCT) or surgical lung biopsy. A molecular usual interstitial pneumonia signature can be identified by a machine learning algorithm in less-invasive transbronchial lung biopsy samples. We report prospective findings for the clinical validity and utility of this molecular test.

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Background: The REACH-HF (Rehabilitation EnAblement in CHronic Heart Failure) trial found that the REACH-HF home-based cardiac rehabilitation intervention resulted in a clinically meaningful improvement in disease-specific health-related quality of life in patients with reduced ejection fraction heart failure (HFrEF). The aims of this study were to assess the long-term cost-effectiveness of the addition of REACH-HF intervention or home-based cardiac rehabilitation to usual care compared with usual care alone in patients with HFrEF.

Design And Methods: A Markov model was developed using a patient lifetime horizon and integrating evidence from the REACH-HF trial, a systematic review/meta-analysis of randomised trials, estimates of mortality and hospital admission and UK costs at 2015/2016 prices.

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Background: Cardiac rehabilitation improves health-related quality of life (HRQoL) and reduces hospitalizations in patients with heart failure, but international uptake of cardiac rehabilitation for heart failure remains low.

Design And Methods: The aim of this multicentre randomized trial was to compare the REACH-HF (Rehabilitation EnAblement in CHronicHeart Failure) intervention, a facilitated self-care and home-based cardiac rehabilitation programme to usual care for adults with heart failure with reduced ejection fraction (HFrEF). The study primary hypothesis was that the addition of the REACH-HF intervention to usual care would improve disease-specific HRQoL (Minnesota Living with Heart Failure questionnaire (MLHFQ)) at 12 months compared with usual care alone.

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Objective: Complications with opioid-based postoperative pain management have led to guideline recommendations for a multimodal analgesia strategy incorporating nonopioid agents. We evaluated the opioid-sparing effect of intravenous acetaminophen in patients undergoing transapical transcatheter aortic valve replacement.

Methods: A multimodal pain management strategy that incorporated intravenous acetaminophen was retrospectively evaluated in 43 patients undergoing transapical transcatheter aortic valve replacement between November 2012 and March 2014.

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Introduction: Home-based cardiac rehabilitation may overcome suboptimal rates of participation. The overarching aim of this study was to assess the feasibility and acceptability of the novel Rehabilitation EnAblement in CHronic Hear Failure (REACH-HF) rehabilitation intervention for patients with heart failure with preserved ejection fraction (HFpEF) and their caregivers.

Methods And Results: Patients were randomised 1:1 to REACH-HF intervention plus usual care (intervention group) or usual care alone (control group).

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Background: Valve-in-valve transcatheter aortic valve replacement is less effective in small surgical bioprostheses. We evaluated the feasibility of bioprosthetic valve fracture with a high-pressure balloon to facilitate valve-in-valve transcatheter aortic valve replacement.

Methods: In vitro bench testing on aortic tissue valves was performed on 19-mm and 21-mm Mitroflow (Sorin, Milan, Italy), Magna and Magna Ease (Edwards Lifesciences, Irvine, CA), Trifecta and Biocor Epic (St.

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Background: Detection and treatment of heart failure (HF) can improve quality of life and reduce premature mortality. However, symptoms such as breathlessness are common in primary care, have a variety of causes and not all patients require cardiac imaging. In systems where healthcare resources are limited, ensuring those patients who are likely to have HF undergo appropriate and timely investigation is vital.

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Background: We aimed to establish the support needs of people with heart failure and their caregivers and develop an intervention to improve their health-related quality of life.

Methods: We used intervention mapping to guide the development of our intervention. We identified "targets for change" by synthesising research evidence and international guidelines and consulting with patients, caregivers and health service providers.

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Vascular access for large endovascular devices has evolved as patients have become more complicated and device indications have expanded. As the benefits of catheter-based treatments for aortic aneurysm repair and aortic valve replacement become mainstream, there is a need to address difficult vascular access by developing not only smaller-diameter devices but also creative options for vascular access. We describe direct descending thoracic aortic access during endovascular aneurysm repair, transcatheter aortic valve replacement, and redo mesenteric revascularization in three patients who did not have traditional access options.

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Primary cardiac tumors are extremely rare. Although complete surgical resection of malignant primary cardiac tumors results in an improved survival compared with no intervention, the overall prognosis is generally poor, with treatable recurrent primary cardiac sarcomas being extremely rare. We report a patient with a recurrent primary cardiac sarcoma obstructing the left atrium managed with radical cardiac resection, including right pneumonectomy, with 21-month postprocedural survival.

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Vascular complications remain an important consideration when selecting access for delivery of large endovascular devices. With the advent of transcatheter aortic valve replacement, transapical access has become an acceptable technique when transfemoral or direct transaortic access is contraindicated. We report the use of the transapical approach during thoracic aortic endovascular repair in 2 patients, one of which included concomitant delivery of a transcatheter aortic valve replacement device.

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Thoracic endovascular aortic repair (TEVAR) of acute ascending aortic pathology is feasible; however, the unique features of this aortic segment in addition to access challenges restricts its use to a select, high-risk subset of patients. With the advent of TAVR, large device delivery using transapical access has become a well-defined technique. We report a patient with critical aortic stenosis and an acute ascending aortic penetrating ulcer with tamponade managed successfully utilizing transapical TAVR and TEVAR.

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Radial artery pseudoaneurysms occur infrequently and are most commonly associated with medical interventions such as arterial lines or cardiac catheterization procedures. Animal bites, particularly cat bites, as a cause for radial artery pseudoaneurysms are extremely rare with only 1 previously reported case in the literature. A unique case of digital micro emboli from a radial artery pseudoaneurysm caused by a cat bite to the wrist is presented.

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Objectives: Rescreen a large community cohort to examine the progression to heart failure over time and the role of natriuretic peptide testing in screening.

Design: Observational longitudinal cohort study.

Setting: 16 socioeconomically diverse practices in central England.

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Background: Subclinical thyroid disease is associated with abnormal cardiovascular haemodynamics and increased risk of heart failure. The burden of raised/low thyroid stimulating hormone (TSH) levels amongst South Asian (SA) and African-Caribbean (AC) minority groups in the UK is not well defined. Given that these groups are particularly susceptible to CVD, we hypothesised that STD would reflect abnormal cardiac function and heightened cardiovascular risk in these ethnic groups.

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Introduction: Infective endocarditis presenting with arthralgia is rare. Group B streptococcus tricuspid endocarditis as a postpartum complication is even rarer. The present case is an example of both.

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Introduction: We conducted a systematic review to assess the effect of exercise training in patients with heart failure with preserved ejection fraction (HFPEF).

Methods: A number of electronic databases were searched up to November 2011 to identify comparative studies of exercise training in HFPEF. Where possible, outcome data from included studies were pooled using meta-analysis.

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Background: Population health status scores are routinely used to inform economic evaluation and evaluate the impact of disease and/or treatment on health. It is unclear whether the health status in black and minority ethnic groups are comparable to these population health status data. The aim of this study was to evaluate health-status in South Asian and African-Caribbean populations.

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