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Colin berry

Margaret McEntegart, David Corcoran, Colin Berry
No abstract text is available yet for this article.
December 2018: Journal of Thoracic Disease
Colin Berry, Novalia Sidik, Anthony C Pereira, Thomas J Ford, Rhian M Touyz, Juan-Carlos Kaski, Atticus H Hainsworth
No abstract text is available yet for this article.
February 5, 2019: Journal of the American Heart Association
François Dérimay, Nils P Johnson, Frederik M Zimmermann, Julien Adjedj, Nils Witt, Barry Hennigan, Bon-Kwon Koo, Emanuele Barbato, Giovanni Esposito, Bruno Trimarco, Gilles Rioufol, Seung-Jung Park, Sérgio Bravo Baptista, George S Chrysant, Antonio Maria Leone, Allen Jeremias, Colin Berry, Bernard De Bruyne, Keith G Oldroyd, Nico H J Pijls, William F Fearon
OBJECTIVES: To identify clinical, angiographic and hemodynamic predictors of discordance between instantaneous wave-free ratio (iFR) and fractional flow reserve (FFR). BACKGROUND: The iFR was found to be non-inferior to the gold-standard FFR for guiding coronary revascularization, although it is discordant with FFR in 20% of cases. A better understanding of the causes of discordance may enhance application of these indices. METHODS: Both FFR and iFR were measured in the prospective multicenter CONTRAST study...
January 31, 2019: Catheterization and Cardiovascular Interventions
Peter J McCartney, Hany Eteiba, Annette M Maznyczka, Margaret McEntegart, John P Greenwood, Douglas F Muir, Saqib Chowdhary, Anthony H Gershlick, Clare Appleby, James M Cotton, Andrew Wragg, Nick Curzen, Keith G Oldroyd, Mitchell Lindsay, J Paul Rocchiccioli, Aadil Shaukat, Richard Good, Stuart Watkins, Keith Robertson, Christopher Malkin, Lynn Martin, Lynsey Gillespie, Thomas J Ford, Mark C Petrie, Peter W Macfarlane, R Campbell Tait, Paul Welsh, Naveed Sattar, Robin A Weir, Keith A Fox, Ian Ford, Alex McConnachie, Colin Berry
Importance: Microvascular obstruction commonly affects patients with acute ST-segment elevation myocardial infarction (STEMI) and is associated with adverse outcomes. Objective: To determine whether a therapeutic strategy involving low-dose intracoronary fibrinolytic therapy with alteplase infused early after coronary reperfusion will reduce microvascular obstruction. Design, Setting, and Participants: Between March 17, 2016, and December 21, 2017, 440 patients presenting at 11 hospitals in the United Kingdom within 6 hours of STEMI due to a proximal-mid-vessel occlusion of a major coronary artery were randomized in a 1:1:1 dose-ranging trial design...
January 1, 2019: JAMA: the Journal of the American Medical Association
Filippo Crea, Cathleen Noel Bairey Merz, John F Beltrame, Colin Berry, Paolo G Camici, Juan Carlos Kaski, Peter Ong, Carl J Pepine, Udo Sechtem, Hiroaki Shimokawa
Persistence or recurrence of angina after a percutaneous coronary intervention (PCI) may affect about 20-40% of patients during short-medium-term follow-up. This appears to be true even when PCI is 'optimized' using physiology-guided approaches and drug-eluting stents. Importantly, persistent or recurrent angina post-PCI is associated with a significant economic burden. Healthcare costs may be almost two-fold higher among patients with persistent or recurrent angina post-PCI vs. those who become symptom-free...
January 4, 2019: European Heart Journal
Colin Berry, Frank M Bengel
No abstract text is available yet for this article.
January 1, 2019: Cardiovascular Research
Annette Maznyczka, Colin Berry
No abstract text is available yet for this article.
January 15, 2019: International Journal of Cardiology
Anvesha Singh, Mark A Horsfield, Soliana Bekele, John P Greenwood, Dana K Dawson, Colin Berry, Kai Hogrefe, Damian J Kelly, John G Houston, Prasad Guntur Ramkumar, Akhlaque Uddin, Toru Suzuki, Gerry P McCann
OBJECTIVES: To compare aortic size and stiffness parameters on MRI between bicuspid aortic valve (BAV) and tricuspid aortic valve (TAV) patients with aortic stenosis (AS). METHODS: MRI was performed in 174 patients with asymptomatic moderate-severe AS (mean AVAI 0.57 ± 0.14 cm2 /m2 ) and 23 controls on 3T scanners. Valve morphology was available/analysable in 169 patients: 63 BAV (41 type-I, 22 type-II) and 106 TAV. Aortic cross-sectional areas were measured at the level of the pulmonary artery bifurcation...
November 28, 2018: European Radiology
Peter J McCartney, Colin Berry
No abstract text is available yet for this article.
November 21, 2018: European Heart Journal Cardiovascular Imaging
Colin McGinty, Robert Reich, Harry Clark, Valerie Finnemeyer, Shaun Berry, Philip Bos
Microbolometers are the dominant technology for uncooled thermal imaging; however, devices based on a direct retardation measurement of a liquid crystal (LC) transducer pixel have been shown to have comparable sensitivity. In this paper, an approach for increasing LC transducer sensitivity utilizing an etalon structure is considered. A detailed design for an LC resonant cavity between dielectric mirrors is proposed and the performance is evaluated numerically. The measured quantity is the transmission of a visible wavelength through the etalon, which requires no thermal contact with the IR sensor...
October 1, 2018: Applied Optics
Kenneth Mangion, David Carrick, Jaclyn Carberry, Ahmed Mahrous, Christie McComb, Keith G Oldroyd, Hany Eteiba, Mitchell Lindsay, Margaret McEntegart, Stuart Hood, Mark C Petrie, Stuart Watkins, Andrew Davie, Xiaodong Zhong, Frederick H Epstein, Caroline E Haig, Colin Berry
Purpose To investigate the prognostic value of circumferential left ventricular (LV) strain measured by using cardiac MRI for prediction of major adverse cardiac events (MACE) following an acute ST-segment-elevation myocardial infarction (STEMI). Materials and Methods Participants with acute STEMI were prospectively enrolled from May 11, 2011, to November 22, 2012. Cardiac MRI was performed at 1.5 T during the index hospitalization. Displacement encoding with stimulated echoes (DENSE) and feature tracking of cine cardiac MRI was used to assess circumferential LV strain...
November 20, 2018: Radiology
Shu Ning Yew, David Carrick, David Corcoran, Nadeem Ahmed, Jaclyn Carberry, Vannesa Teng Yue May, Margaret McEntegart, Mark C Petrie, Hany Eteiba, Mitchell Lindsay, Stuart Hood, Stuart Watkins, Andrew Davie, Ahmed Mahrous, Ify Mordi, Ian Ford, Keith G Oldroyd, Colin Berry
Background Invasive measures of microvascular resistance in the culprit coronary artery have potential for risk stratification in acute ST-segment-elevation myocardial infarction. We aimed to investigate the pathological and prognostic significance of coronary thermodilution waveforms using a diagnostic guidewire. Methods and Results Coronary thermodilution was measured at the end of percutaneous coronary intervention, (PCI) and contrast-enhanced cardiac magnetic resonance imaging (MRI) was intended on day 2 and 6 months later to assess left ventricular (LV) function and pathology...
August 7, 2018: Journal of the American Heart Association
Colin Berry, Kenneth Mangion, Faraz Pathan
No abstract text is available yet for this article.
October 2018: JACC. Cardiovascular Imaging
Thomas J Ford, Bethany Stanley, Richard Good, Paul Rocchiccioli, Margaret McEntegart, Stuart Watkins, Hany Eteiba, Aadil Shaukat, Mitchell Lindsay, Keith Robertson, Stuart Hood, Ross McGeoch, Robert McDade, Eric Yii, Novalia Sidik, Peter McCartney, David Corcoran, Damien Collison, Christopher Rush, Alex McConnachie, Rhian M Touyz, Keith G Oldroyd, Colin Berry
BACKGROUND: Patients with angina symptoms and/or signs of ischemia but no obstructive coronary artery disease (INOCA) pose a diagnostic and therapeutic challenge. OBJECTIVES: The purpose of this study was to test whether an interventional diagnostic procedure (IDP) linked to stratified medicine improves health status in patients with INOCA. METHODS: The authors conducted a randomized, controlled, blinded clinical trial of stratified medical therapy versus standard care in patients with angina...
December 11, 2018: Journal of the American College of Cardiology
Valentina O Puntmann, Silvia Valbuena, Rocio Hinojar, Steffen E Petersen, John P Greenwood, Christopher M Kramer, Raymond Y Kwong, Gerry P McCann, Colin Berry, Eike Nagel
Cardiovascular disease remains a leading cause of morbidity and mortality globally. Changing natural history of the disease due to improved care of acute conditions and ageing population necessitates new strategies to tackle conditions which have more chronic and indolent course. These include an increased deployment of safe screening methods, life-long surveillance, and monitoring of both disease activity and tailored-treatment, by way of increasingly personalized medical care. Cardiovascular magnetic resonance (CMR) is a non-invasive, ionising radiation-free method, which can support a significant number of clinically relevant measurements and offers new opportunities to advance the state of art of diagnosis, prognosis and treatment...
September 20, 2018: Journal of Cardiovascular Magnetic Resonance
Yuhei Kobayashi, Jacob Lønborg, Andy Jong, Takeshi Nishi, Bernard De Bruyne, Dan Eik Høfsten, Henning Kelbæk, Jamie Layland, Chang-Wook Nam, Nico H J Pijls, Pim A L Tonino, Julie Warnøe, Keith G Oldroyd, Colin Berry, Thomas Engstrøm, William F Fearon
BACKGROUND: The residual SYNTAX (Synergy Between Percutaneous Coronary Intervention With Taxus and Cardiac Surgery) score (RSS) quantitatively assesses angiographic completeness of revascularization after percutaneous coronary intervention (PCI) and has been shown to be a predictor of events after angiography-guided PCI. In stable patients undergoing functionally complete revascularization with fractional flow reserve (FFR) guidance, RSS did not predict outcome. Whether this is also true in patients with acute coronary syndromes (ACS) is unknown...
September 18, 2018: Journal of the American College of Cardiology
Anoop S V Shah, Atul Anand, Fiona E Strachan, Amy V Ferry, Kuan Ken Lee, Andrew R Chapman, Dennis Sandeman, Catherine L Stables, Philip D Adamson, Jack P M Andrews, Mohamed S Anwar, John Hung, Alistair J Moss, Rachel O'Brien, Colin Berry, Iain Findlay, Simon Walker, Anne Cruickshank, Alan Reid, Alasdair Gray, Paul O Collinson, Fred S Apple, David A McAllister, Donogh Maguire, Keith A A Fox, David E Newby, Christopher Tuck, Ronald Harkess, Richard A Parker, Catriona Keerie, Christopher J Weir, Nicholas L Mills
BACKGROUND: High-sensitivity cardiac troponin assays permit use of lower thresholds for the diagnosis of myocardial infarction, but whether this improves clinical outcomes is unknown. We aimed to determine whether the introduction of a high-sensitivity cardiac troponin I (hs-cTnI) assay with a sex-specific 99th centile diagnostic threshold would reduce subsequent myocardial infarction or cardiovascular death in patients with suspected acute coronary syndrome. METHODS: In this stepped-wedge, cluster-randomised controlled trial across ten secondary or tertiary care hospitals in Scotland, we evaluated the implementation of an hs-cTnI assay in consecutive patients who had been admitted to the hospitals' emergency departments with suspected acute coronary syndrome...
September 15, 2018: Lancet
Thomas J Ford, Paul Rocchiccioli, Richard Good, Margaret McEntegart, Hany Eteiba, Stuart Watkins, Aadil Shaukat, Mitchell Lindsay, Keith Robertson, Stuart Hood, Eric Yii, Novalia Sidik, Adam Harvey, Augusto C Montezano, Elisabeth Beattie, Laura Haddow, Keith G Oldroyd, Rhian M Touyz, Colin Berry
Aims: Coronary microvascular dysfunction and/or vasospasm are potential causes of ischaemia in patients with no obstructive coronary artery disease (INOCA). We tested the hypothesis that these patients also have functional abnormalities in peripheral small arteries. Methods and results: Patients were prospectively enrolled and categorised as having microvascular angina (MVA), vasospastic angina (VSA) or normal control based on invasive coronary artery function tests incorporating probes of endothelial and endothelial-independent function (acetylcholine and adenosine)...
August 27, 2018: European Heart Journal
Colin Berry
Recent advances in our understanding of the process of carcinogenesis in Man have required revision of our thinking about the classical initiation/promotion sequence; understanding must now encompass the roles of both genetic and epigenetic change, realisation of the importance of the variable genetic backgrounds of the tumour bearers in any group and an understanding of the importance of random genetic events over time. The behavior of tumours, once established, is more complex than has been thought. Current views of the processes involved are not modelled in toxicity testing programmes...
July 1, 2018: Toxicology Research
Sonia V Shah, Frederik M Zimmermann, Nils P Johnson, Takeshi Nishi, Yuhei Kobayashi, Nils Witt, Colin Berry, Allen Jeremias, Bon-Kwon Koo, Giovanni Esposito, Gilles Rioufol, Seung-Jung Park, Keith G Oldroyd, Emanuele Barbato, Nico H J Pijls, Bernard De Bruyne, William F Fearon
OBJECTIVES: The goal of this study was to investigate sex differences in adenosine-free coronary pressure indexes. BACKGROUND: Several adenosine-free coronary pressure wire indexes have been proposed to assess the functional significance of coronary artery lesions; however, there is a theoretical concern that sex differences may affect diagnostic performance because of differences in resting flow and distal myocardial mass. METHODS: In this CONTRAST (Can Contrast Injection Better Approximate FFR Compared to Pure Resting Physiology?) substudy, contrast fractional flow reserve (cFFR), obtained during contrast-induced submaximal hyperemia, the instantaneous wave-free ratio (iFR), and distal/proximal coronary pressure ratio (Pd/Pa) were compared with fractional flow reserve (FFR) in 547 men and 216 women...
August 13, 2018: JACC. Cardiovascular Interventions
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