Publications by authors named "Cyrille Boulogne"

Computed tomography (CT) has emerged as a noninvasive method to identify coronary artery calcifications (CAC). We sought to investigate the association between opportunistic visual CAC evaluation in patients without known coronary artery disease who underwent CT pulmonary angiography (CTPA) for pulmonary embolism (PE) suspicion, and cardiovascular prognosis. We analyzed data of patients who underwent CTPA for suspected PE in 2017 at CHU Dupuytren, Limoges, France.

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Article Synopsis
  • The study aimed to assess how 4D analysis using multiphase cardiac CT can help describe the aortic annulus in patients with bicuspid aortic valves, comparing it to those with normal tricuspid valves.
  • The methodology involved analyzing cardiac CT scans of 15 BAV patients and 15 TAV patients, measuring various 3D characteristics of the aortic annulus across different phases of the heart's cycle.
  • Results showed that the aortic annulus in BAV patients was significantly larger in multiple dimensions compared to TAV patients and demonstrated that 3D shape analysis can effectively differentiate between various types of BAV, revealing important anatomical details like the position of nonfunctional commissures.
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Objectives: To evaluate the precise dimensions of the normal aortic root, especially the true aortic annulus, during the cardiac cycle using an innovative reconstruction method based on multiphase cardiac computed tomography and to assess the feasibility and the reproducibility of this method for aortic root analysis.

Methods: Between January 2019 and June 2021, 30 optimal consecutive ECG-gated multiphase cardiac computed tomography of patients with normal tricuspid aortic valve were analysed using an in-house software. Aortic annulus border was pinpointed on 9 reconstructed planes and the 3D coordinates of the 18 consecutive points were interpolated into a 3D curve using a cubic spline.

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Background: Coronary artery calcium score (CACS) refines the cardiovascular disease (CVD) risk prediction in patients with Type-2 diabetes (T2D). We aimed to identify the determinants for high CACS in CVD-free patients with T2D.

Methods: We studied 796 patients with T2D with CACS measured in three centers: two in continental France and a third in the Reunion Island.

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Cardiac involvement in systemic light chain (AL) amyloidosis carries a poor prognosis mainly through involvement of the left ventricular (LV) myocardium. Despite its limitations, two-dimensional transthoracic echocardiography (2D-TTE) remains the main tool used for the assessment of LV systolic function in AL patients. We hypothesize that 3D-TTE coupled with speckle tracking imaging allows earlier detection of LV systolic dysfunction than 2D-TTE in AL amyloidosis.

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Background: Fabry cardiomyopathy (FC) and light-chain amyloid cardiomyopathy (AL) present with concentric left ventricular (LV) hypertrophy/remodeling and diastolic rather than systolic dysfunction. Direct comparisons are difficult due to rarity and confounded by variability of LV thickness.

Aims: To compare LV diastolic and systolic properties between patients with FC and AL in a cohort matched for interventricular septal thickness (IVS).

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Background: Systemic light chain amyloidosis (AL) is characterized by the extracellular deposition of amyloid fibrils. Transthoracic echocardiography is the modality of choice to assess cardiac function in patients with AL. Whereas left ventricular (LV) function has been well studied in this patient population, data regarding the value of left atrial (LA) function in AL patients are lacking.

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Aims: The prognostic impact of elevated pulmonary arterial pressure (PAP) remains controversial in aortic stenosis (AS) and few studies focused on patients with preserved left ventricular ejection fraction (LVEF). We aimed to investigate the impact of pulmonary hypertension (PH), invasively derived, on survival in severe AS with preserved LVEF.

Methods And Results: Between 2000 and 2010, 749 patients (74 ± 8 years, 57% males) with preserved LVEF and severe AS without other valvular heart disease underwent cardiac catheterization.

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Background: Left heart valve thickening (LVT) was described in patients with light-chain amyloidosis (AL). This phenomenon reflects likely infiltration of the valve by amyloid proteins. However, the prevalence of LVT and its prognostic value have not been investigated in patients with AL.

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Background: Cardiac involvement in systemic light-chain amyloidosis (AL) imparts an adverse impact on outcome. The left atrium (LA), by virtue of its anatomical location and muscular wall, is commonly affected by the amyloid process. Although LA infiltration by amyloid fibrils leads to a reduction in its pump function, the infiltration of the left ventricular (LV) myocardium results in diastolic dysfunction with subsequent increase in filling pressures and LA enlargement.

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Article Synopsis
  • The study looked at patients with severe aortic stenosis (AS) to see how low blood flow affects their health outcomes.
  • Researchers found that 27% of the patients had low stroke volume, and those patients generally had worse health and were older.
  • Low stroke volume was linked to higher chances of dying, so doctors should always check this measurement in patients with severe AS.
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Introduction: Global left ventricular (LV) afterload as assessed by valvulo-arterial impedance (Zva), may be an independent predictor of mortality in patients with severe aortic stenosis (AS) and preserved LV ejection fraction (LVEF). However, its quantification using echocardiography may be subject to error measurement. We aimed to determine the prevalence and impact on long-term survival of high Zva, purposely measured by cardiac catheterization.

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Background: Patients with severe aortic stenosis (AS) and paradoxical low flow (PLF) have worse outcome compared with those with normal flow. Furthermore, prosthesis-patient mismatch (PPM) after aortic valve replacement is a predictor of reduced survival. However, the prevalence and prognostic impact of PPM in patients with PLF-AS are unknown.

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