Publications by authors named "Nuno Cardim"

Cardiac ultrasound (CUS) has emerged as an indispensable bedside diagnostic and monitoring tool in cardiovascular emergencies and critical care, enabling rapid, noninvasive assessment of cardiac structure and function. This multidisciplinary consensus statement, jointly developed by the EACVI, ACVC, and EACTAIC, provides comprehensive, practical guidance on the use of CUS in acute care settings. The document outlines a pathophysiological framework for applying CUS across a wide spectrum of clinical scenarios, including cardiogenic shock, acute myocardial infarction, mechanical complications, acute heart failure, severe valvular disease, pericardial tamponade, pulmonary embolism, and cardiac arrest.

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Surgical aortic valve replacement (SAVR) is the treatment of choice for young patients with severe aortic stenosis (AS). Left ventricular (LV) reverse remodeling (RR) after surgery is expected to occur, even though its definition is largely heterogenous and ill-defined. However, LV RR not always occurs following afterload relief, and such may impact the prognosis.

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Tropical diseases (TDs), or neglected TDs, affect over 1 billion subjects globally, primarily in impoverished regions. Despite their impact, these diseases are often overlooked on the global health agenda, with limited resources allocated to their control. TDs are caused by various pathogens, including viruses, protozoa, helminths, and bacteria.

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Left ventricular hypertrophy (LVH) represents a frequent observation in clinical practice. Nonetheless, the hypertrophic phenotype emerges as a common manifestation of diverse conditions, thereby presenting a diagnostic conundrum for clinicians. Differentiation among the etiologies of LVH is imperative for therapy decision-making, as different approaches must be implemented for distinct conditions, such as LVH secondary to loading changes, hypertrophic cardiomyopathy (HCM), or HCM mimics.

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In Portugal, a 15.2% prevalence of heart failure with preserved ejection fraction (HFpEF) was recently identified among those aged ≥50 years. HFpEF represents 90% of Portuguese heart failure patients.

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Introduction: Heart failure is a major health challenge with high morbidity and socioeconomic burden, especially when diagnosis is delayed. In primary care, HF detection can be challenging due to symptoms overlapping with other conditions, limited access to diagnostic tools, and resource constraints. This study explores the use of natriuretic peptides (NT-proBNP) and point-of-care ultrasound (POCUS) with artificial intelligence integration as tools to improve HF screening and management in primary care.

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Heart failure (HF) with preserved ejection fraction (HFpEF) affects more than 50% of HF patients worldwide, and more than 70% of HF patients aged over 65. This is a complex syndrome with a clinically heterogeneous presentation and a multifactorial pathophysiology, both of which make its diagnosis and treatment challenging. A Portuguese HF expert panel convened to address HFpEF pathophysiology and therapy, as well as appropriate management within the Portuguese context.

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Early diagnosis of transthyretin amyloid cardiomyopathy (ATTR-CM) is crucial for better disease management and outcome. To ensure timely diagnosis, a multidisciplinary panel of Portuguese experts, including cardiologists, internal medicine specialists, and general practitioners, have developed a national consensus to aid physicians in enhancing the referral of patients with suspicion of ATTR-CM in Portugal. A structured approach was used to develop the consensus: (1) an online survey aimed at identifying clinical red flags, patient journeys, and diagnostic tools related to ATTR-CM; (2) a face-to-face roundtable meeting where the survey findings were discussed and a consensus was reached on referral and diagnostic algorithms for ATTR-CM in Portugal; and (3) critical review of the proposed algorithms.

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Background: Aficamten is a cardiac myosin inhibitor that mitigates left ventricular outflow gradients in obstructive hypertrophic cardiomyopathy (oHCM). The clinical efficacy of aficamten across multiple outcome domains in oHCM has not been fully defined.

Objectives: This responder analysis from the SEQUOIA-HCM (Phase 3 Trial to Evaluate the Efficacy and Safety of Aficamten Compared to Placebo in Adults With Symptomatic oHCM) trial characterizes the clinical impact of aficamten.

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Article Synopsis
  • Aficamten, a new cardiac myosin inhibitor, was tested in a Phase 3 trial (SEQUOIA-HCM) and effectively improved peak oxygen uptake and reduced left ventricular outflow gradients in adults with obstructive hypertrophic cardiomyopathy.
  • Serial echocardiograms over 28 weeks showed that aficamten significantly improved various echocardiographic measures, including left atrial volume and strain, while also reducing LVOT gradients.
  • The treatment resulted in a mild, reversible decrease in left ventricular ejection fraction, and post-treatment measures returned to baseline, indicating temporary effects on heart function.
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Article Synopsis
  • Aficamten is a new drug that helps reduce heart issues in patients with obstructive hypertrophic cardiomyopathy by targeting heart muscle contractility and maintaining safe blood flow levels.
  • * In a clinical trial involving 282 patients, those receiving aficamten were able to maintain effective heart function with minimal side effects, including a stable reduction in heart muscle contraction without significant adverse events.
  • * The findings suggest that using a tailored dosing strategy for aficamten is effective and safe, improving cardiovascular health without worsening conditions like heart failure.
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Atherosclerotic cardiovascular disease (ASCVD) remains the major cause of premature death and disability; effective cardiovascular (CV) risk prevention is fundamental. The World Heart Federation (WHF) Cholesterol Roadmap provides a framework for national policy development and aims to achieve ASCVD prevention. At the invitation of the WHF, a group of experts from the Portuguese Society of Cardiology (SPC), addressed the cholesterol burden at nationally and discussed possible strategies to include in a Portuguese cholesterol roadmap.

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Chronic thromboembolic pulmonary hypertension (CTEPH) is part of group 4 of the pulmonary hypertension (PH) classification and generally affects more than a third of patients referred to PH centers. It is a three-compartment disease involving proximal (lobar-to-segmental) and distal (subsegmental) pulmonary arteries that are obstructed by persistent fibrothrombotic material, and precapillary pulmonary arteries that can be affected as in pulmonary arterial hypertension. It is a rare complication of pulmonary embolism (PE), with an incidence of around 3% in PE survivors.

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Background: One of the major determinants of exercise intolerance and limiting symptoms among patients with obstructive hypertrophic cardiomyopathy (HCM) is an elevated intracardiac pressure resulting from left ventricular outflow tract obstruction. Aficamten is an oral selective cardiac myosin inhibitor that reduces left ventricular outflow tract gradients by mitigating cardiac hypercontractility.

Methods: In this phase 3, double-blind trial, we randomly assigned adults with symptomatic obstructive HCM to receive aficamten (starting dose, 5 mg; maximum dose, 20 mg) or placebo for 24 weeks, with dose adjustment based on echocardiography results.

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Left ventricular (LV) hypertrophy is a common finding in patients with severe aortic stenosis (AS). Cardiac magnetic resonance (CMR) is the gold-standard technique to evaluate LV remodeling. Our aim was to assess the prevalence and describe the patterns of LV adaptation in AS patients before and after surgical aortic valve replacement (AVR).

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Aims: Myocardial fibrosis (MF) takes part in left ventricular (LV) remodelling in patients with aortic stenosis (AS), driving the transition from hypertrophy to heart failure. The structural changes that occur in this transition are not fully enlightened. The aim of this study was to describe histopathological changes at endomyocardial biopsy (EMB) in patients with severe AS referred to surgical aortic valve replacement (AVR) and to correlate them with LV tissue characterization from pre-operative cardiac magnetic resonance (CMR).

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Patients with obstructive hypertrophic cardiomyopathy (oHCM) have increased risk of arrhythmia, stroke, heart failure, and sudden death. Contemporary management of oHCM has decreased annual hospitalization and mortality rates, yet patients have worsening health-related quality of life due to impaired exercise capacity and persistent residual symptoms. Here we consider the design of clinical trials evaluating potential oHCM therapies in the context of SEQUOIA-HCM (Safety, Efficacy, and Quantitative Understanding of Obstruction Impact of Aficamten in HCM).

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Background: Myocardial adaptation to severe aortic stenosis (AS) is a complex process that involves myocardial fibrosis (MF) beyond cardiomyocyte hypertrophy. Perfusion impairment is believed to be involved in myocardial remodeling in chronic pressure overload.

Aim: To describe morphological and ultrastructural myocardial changes at endomyocardial tissue sampling, possibly reflecting subendocardial ischemia, in a group of patients with severe AS referred to surgical aortic valve replacement (AVR), with no previous history of ischemic cardiomyopathy.

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