Publications by authors named "Clarissa Borguezan Daros"

Background: Regional wall motion abnormality is considered a sensitive and specific marker of ischemia during stress echocardiography (SE). However, ischemia is a multifaceted entity associated with either coronary artery disease (CAD) or angina with normal coronary arteries, a distinction difficult to make using a single sign. The aim of this study was to evaluate the diagnostic potential of the five-step ABCDE SE protocol for CAD detection.

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Article Synopsis
  • Left atrial myopathy is common in chronic coronary syndromes and can be triggered by stress, especially in patients with atrial fibrillation.
  • A study involving 3042 patients assessed left atrial volume and function at rest and during stress, showing that left atrial volume index increased and LA strain decreased as patients progressed from sinus rhythm to permanent atrial fibrillation.
  • The findings highlighted that both paroxysmal and permanent AF are linked to greater left atrial dilation and dysfunction, which correlates with more instances of stress-induced ischemia and pulmonary congestion.
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Background: Lung ultrasound detects pulmonary congestion as B-lines at rest, and more frequently, during exercise stress echocardiography (ESE).

Methods: We performed ESE plus lung ultrasound (4-site simplified scan) in 4392 subjects referred for semi-supine bike ESE in 24 certified centers in 9 countries. B-line score ranged from 0 (normal) to 40 (severely abnormal).

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With stress echo (SE) 2020 study, a new standard of practice in stress imaging was developed and disseminated: the ABCDE protocol for functional testing within and beyond CAD. ABCDE protocol was the fruit of SE 2020, and is the seed of SE 2030, which is articulated in 12 projects: 1-SE in coronary artery disease (SECAD); 2-SE in diastolic heart failure (SEDIA); 3-SE in hypertrophic cardiomyopathy (SEHCA); 4-SE post-chest radiotherapy and chemotherapy (SERA); 5-Artificial intelligence SE evaluation (AI-SEE); 6-Environmental stress echocardiography and air pollution (ESTER); 7-SE in repaired Tetralogy of Fallot (SETOF); 8-SE in post-COVID-19 (SECOV); 9: Recovery by stress echo of conventionally unfit donor good hearts (RESURGE); 10-SE for mitral ischemic regurgitation (SEMIR); 11-SE in valvular heart disease (SEVA); 12-SE for coronary vasospasm (SESPASM). The study aims to recruit in the next 5 years (2021-2025) ≥10,000 patients followed for ≥5 years (up to 2030) from ≥20 quality-controlled laboratories from ≥10 countries.

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: Left ventricular contractile reserve (LVCR), coronary flow velocity reserve (CFVR), and heart rate reserve (HRR) affect outcome in heart failure (HF). They can be simultaneously measured during dipyridamole stress echocardiography (DSE). : To assess the value of comprehensive DSE in patients with non-ischemic HF.

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Background: Two-dimensional volumetric exercise stress echocardiography (ESE) provides an integrated view of left ventricular (LV) preload reserve through end-diastolic volume (EDV) and LV contractile reserve (LVCR) through end-systolic volume (ESV) changes.

Purpose: To assess the dependence of cardiac reserve upon LVCR, EDV, and heart rate (HR) during ESE.

Methods: We prospectively performed semi-supine bicycle or treadmill ESE in 1344 patients (age 59.

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An enlarged left atrial volume index (LAVI) at rest mirrors increased LA pressure and/or impairment of LA function. A cardiovascular stress may acutely modify left atrial volume (LAV) within minutes. Aim of this study was to assess the feasibility and functional correlates of LAV-stress echocardiography (SE) Out of 514 subjects referred to 10 quality-controlled labs, LAV-SE was completed in 490 (359 male, age 67 ± 12 years) with suspected or known chronic coronary syndromes (n = 462) or asymptomatic controls (n = 28).

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For the past 40 years, the methodology for stress echocardiography (SE) has remained basically unchanged. It is based on two-dimensional, black and white imaging, and is used to detect regional wall motion abnormalities (RWMA) in patients with known or suspected coronary artery disease (CAD). In the last five years much has changed and RWMA is not enough on its own to stratify patient risk and dictate therapy.

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Article Synopsis
  • The study aimed to evaluate how B-lines, identified through lung ultrasound during stress echocardiography, relate to lung congestion and patient prognosis.
  • Researchers analyzed 2,145 patients using transthoracic echocardiography and lung ultrasound, classifying B-lines into four severity groups based on their presence during stress tests.
  • Findings showed that patients with severe B-lines had a significantly higher risk for adverse outcomes, including death and nonfatal myocardial infarctions, during a median follow-up period of 15.2 months.
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Background: Stroke volume response during stress is a major determinant of functional status in heart failure and can be measured by two-dimensional (2-D) volumetric stress echocardiography (SE). The present study hypothesis is that SE may identify mechanisms underlying the change in stroke volume by measuring preload reserve through end-diastolic volume (EDV) and left ventricular contractile reserve (LVCR) with systolic blood pressure and end-systolic volume (ESV).

Methods: We enrolled 4735 patients (age 63.

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Background: The assessment of coronary flow velocity reserve (CFVR) in left anterior descending coronary artery (LAD) expands the risk stratification potential of stress echocardiography (SE) based on stress-induced regional wall motion abnormalities (RWMA).

Objectives: The purpose of this study was to assess the feasibility and functional correlates of CFVR.

Methods: This prospective, observational, multicenter study initially screened 3,410 patients (2,061 [60%] male; age 63 ± 11 years; ejection fraction 61 ± 9%) with known or suspected coronary artery disease and/or heart failure.

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  • The "Stress echo (SE) 2020" trial investigates innovative uses of stress echocardiography (SE) for diagnosing coronary artery disease and includes a lung ultrasound component to assess pulmonary congestion.
  • A group of 60 readers from 16 countries undertook a training module before evaluating video clips of lung ultrasounds, aiming for a high diagnostic accuracy and standardized reading criteria.
  • All readers achieved accreditation with an average diagnostic accuracy of 95%, and even those new to B-lines scoring performed comparably to experts, highlighting the effectiveness of the web-based quality control training.
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Background: The trial "Stress Echo (SE) 2020" evaluates novel applications of SE beyond coronary artery disease. The aim of the study was control quality and harmonize reading criteria.

Methods: One reader from 78 centers of the SE 2020 network asked for credentials to read a set of 20 SE video-clips selected by the core lab.

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Article Synopsis
  • Stress echocardiography (SE) is widely used and recognized in guidelines, but its applications now extend beyond just coronary artery disease (CAD), highlighting the need for comprehensive studies on its diverse uses.
  • A prospective, international study will involve over 100 high-volume SE labs, collecting clinical and imaging data across various heart conditions, aiming to uncover new insights regarding cardiac response to therapy.
  • The project plans to recruit around 10,000 patients over a 5-year span and will focus on diverse issues such as heart failure types, cardiac therapies, and genetic heart diseases to analyze the effectiveness and consistency of SE parameters.
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