Publications by authors named "Pascal Gueret"

Objective: To determine whether coronary computed tomography angiography (CTA) should be performed in patients with any clinical probability of coronary artery disease (CAD), and whether the diagnostic performance differs between subgroups of patients.

Design: Prospectively designed meta-analysis of individual patient data from prospective diagnostic accuracy studies.

Data Sources: Medline, Embase, and Web of Science for published studies.

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The original version of this article, published on 19 March 2018, unfortunately contained a mistake. The following correction has therefore been made in the original: The names of the authors Philipp A. Kaufmann, Ronny Ralf Buechel and Bernhard A.

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Objectives: To analyse the implementation, applicability and accuracy of the pretest probability calculation provided by NICE clinical guideline 95 for decision making about imaging in patients with chest pain of recent onset.

Methods: The definitions for pretest probability calculation in the original Duke clinical score and the NICE guideline were compared. We also calculated the agreement and disagreement in pretest probability and the resulting imaging and management groups based on individual patient data from the Collaborative Meta-Analysis of Cardiac CT (CoMe-CCT).

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Background: ST-segment-elevation myocardial infarction (STEMI) and non-ST-segment-elevation myocardial infarction (NSTEMI) management has evolved considerably over the past 2 decades. Little information on mortality trends in the most recent years is available. We assessed trends in characteristics, treatments, and outcomes for acute myocardial infarction in France between 1995 and 2015.

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Background And Aims: Although much has been written about the conventional cardiovascular risk factor correlates of the extent of coronary artery calcification (CAC), few studies have been carried out on symptomatic patients. This paper assesses the potential ability of risk factors to associate with an increasing CAC score.

Methods: From the European Calcific Coronary Artery Disease (Euro-CCAD) cohort, we retrospectively investigated 6309 symptomatic patients, 62% male, from Denmark, France, Germany, Italy, Spain and the USA.

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Aims: Alhough cardiogenic shock (CS) after acute myocardial infarction (AMI) is more common in elderly patients, information on the epidemiology of these patients is scarce. This study aimed to assess the trends in prevalence, characteristics, management, and outcomes of elderly patients admitted with CS complicating AMI between 1995 and 2010, using data from the FAST-MI programme.

Methods And Results: We analysed the incidence and 1-year mortality of CS in four nationwide French surveys carried out 5 years apart from 1995 to 2010, including consecutive AMI patients over 1-month periods.

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Several non-invasive imaging techniques are currently available for coronary artery disease detection in stable patients with chest pain: exercise electrocardiogram, myocardial scintigraphy, stress echocardiography, stress MRI, positron emission tomography and computed tomography coronary angiography. According to recent guidelines from the European Society of Cardiology, the diagnosis process shall be guided by the coronary risk of the patient. The first recommended step is to clinically assess the probability of coronary artery disease.

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Background: Improved early outcome in non-ST elevation myocardial infarction (NSTEMI) patients has been mainly attributed to a broader use of invasive strategies. Little is known about the impact of other changes in early management.

Methods: We aimed to assess 15-year trends in one-year mortality and their determinants in NSTEMI patients.

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Article Synopsis
  • Epicardial adipose tissue (EAT) is fat around the heart that might be linked to heart problems and artery blockages.
  • In a study of 970 patients, those with heart disease (CAD) had thicker EAT compared to those without.
  • EAT thickness could help predict heart issues, but it’s not very reliable for diagnosing them on its own.
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Background: Dobutamine induced tachycardia increases myocardial oxygen consumption and impairs ventricular filling. We hypothesized that Ivabradine may be efficient to control dobutamine induced tachycardia.

Methods: We assessed the effects of Ivabradine in addition to dobutamine in stable heart failure (HF) patients (LVEF < 35%, n = 22, test population) and validated its effects in refractory cardiogenic shock patients (n = 9, validation population) with contraindication to cardiac assistance or transplant.

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Objectives: To determine the costs and cost-effectiveness of a diagnostic strategy including computed tomography coronary angiography (CTCA) in comparison with invasive conventional coronary angiography (CA) for the detection of significant coronary artery disease from the point of view of the healthcare provider.

Methods: The average cost per CTCA was determined via a micro-costing method in four French hospitals, and the cost of CA was taken from the 2011 French National Cost Study that collects data at the patient level from a sample of 51 public or not-for-profit hospitals.

Results: The average cost of CTCA was estimated to be 180 (95 % CI 162-206) based on the use of a 64-slice CT scanner active for 10 h per day.

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Aims: To evaluate the prognostic impact of QRS width in patients with low-flow/low-gradient aortic stenosis (LF/LGAS).

Methods And Results: Among 88 consecutive patients referred to our institution for LF/LGAS from September 1994 to March 2007, baseline demographic, clinical, echocardiographic, and electrocardiographic data were collected. This population was divided into two groups according to baseline QRS duration (cut-off QRS ≥130 ms).

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Background: Coupled pacing (CP), which consists of an additional beat delivered after ventricular refractory period, has been proposed to reduce ventricular rate and increase ventricular contractility. We hypothesized that CP may be added to cardiac resynchronization therapy (CRT) to improve CRT effect in heart failure (HF) patients.

Methods: The study included 20 consecutive HF patients in sinus rhythm referred for CRT-defibrillator (CRT-D) implantation (baseline left ventricular ejection fraction [LVEF] 27 ± 6%, baseline QRS duration 149 ± 33 ms, age = 63 ± 11 years).

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Background: The aim of this study was to evaluate changes in three-dimensional (3D) speckle-tracking-derived myocardial strain during ischemia.

Methods: Twenty patients referred for percutaneous coronary intervention were studied (mean age, 65 ± 11 years; mean left ventricular ejection fraction, 56 ± 7%). Of the 20 study patients, 12 had severe left anterior descending coronary artery stenosis.

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The ratio of early transmitral blood flow velocity over tissue Doppler early diastolic mitral annulus velocity (E/e') was found unreliable for estimating pulmonary capillary wedge pressure (PCWP) in patients with decompensated systolic heart failure (HF). The objective of this study was to test its reliability in stable HF. Therefore, 130 consecutive patients with a left ventricular (LV) ejection fraction of <35% and stable HF underwent right-sided cardiac catheterization and transthoracic echocardiography with measurement of transmitral flow velocities (E, A) and mitral annulus velocities during systole (s') and diastole (e').

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Background: The benefit of load expansion is controversial in acute pulmonary embolism (PE). The aim of this study was to evaluate the benefit of furosemide in cases of normotensive acute PE.

Methods And Results: We retrospectively included 70 consecutive normotensive patients (systolic blood pressure ≥ 90 mmHg) admitted for acute PE with right ventricular dilation.

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Background: Currently, several anatomical approaches and intervention sites can be used to perform transcatheter aortic valve implantations (TAVIs), often with no clinical indications for choosing one or another. While these choices can have an impact on resource consumption, no costing study is available in the European context to provide information on resource use and assist decision-making.

Aims: To provide comparative data on the cost of the TAVI procedure, depending on anatomical approach and intervention site used, from a hospital perspective, and to analyze factors associated with cost of hospital stay.

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Background: Right ventricular (RV) function is a strong predictor of patient outcome after cardiac surgery. Limited studies have compared the predictive value of RV global longitudinal strain (RV-GLS) with tricuspid annular plane systolic excursion (TAPSE) and RV fractional area change (RVFAC) in this setting.

Methods: The study included 250 patients (66 ± 13 years old, LVEF = 52% ± 12%) referred for cardiac surgery (EuroSCORE-II = 4.

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