Publications by authors named "Caravita Sergio"

Despite the increasing prevalence and substantial burden of heart failure with preserved ejection fraction (HFpEF), which constitutes up to 50% of all heart failure cases, significant challenges persist in its diagnostic and therapeutic strategies. These difficulties arise primarily from the heterogeneous nature of the condition, the presence of various comorbidities and a wide range of phenotypic variations. Considering these challenges, current international guidelines endorse the utilization of invasive haemodynamic assessments, including resting and exercise haemodynamics, as the gold standard for enhancing diagnostic accuracy in cases where traditional diagnostic methods yield inconclusive results.

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Background: Invasive exercise right heart catheterization is a gold standard in diagnosing heart failure with preserved ejection fraction (HFpEF). Body positions during the test influence hemodynamics. However, the discrepancy in HFpEF diagnosis between exercise testing in supine versus upright position is unknown.

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Article Synopsis
  • Pulmonary hypertension (PH) linked to left heart failure (PH-LHF) is a common condition that worsens symptoms, reduces physical ability, and harms right heart function, leading to a poor outlook for patients.
  • Despite various drugs being tested, there are currently no specific treatments for PH-LHF, highlighting significant gaps in understanding its pathophysiology and clinical management.
  • The document calls for improved research on pulmonary venous changes, patient categorization for tailored therapies, and rigorous pre-clinical studies to enhance clinical trials and expand treatment options beyond current methods used for pulmonary arterial hypertension.
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Pulmonary hypertension (PH) is a frequent pathological condition worldwide, mainly secondary to cardiovascular and respiratory diseases, with a poor prognosis. Pulmonary arterial hypertension (PAH) is a rare form that affects the arterial pulmonary vasculature. PH and PAH are characterized by non-specific symptoms and a progressive increase of pulmonary vascular resistance that results in progressive, sometimes irreversible, right ventricular dysfunction.

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Pulmonary hypertension (PH) is a common complication of diseases affecting the left heart, mostly found in patients suffering from heart failure. Left atrial hypertension is the initial driver of post-capillary PH. However, several mechanisms may lead in a subset of patients to structural changes in the pulmonary vessels with development of a pre-capillary component.

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Background: In patients with secondary tricuspid regurgitation (STR), right atrial remodeling (RAR) is a proven marker of disease progression. However, the prognostic value of RAR, assessed by indexed right atrial volume (RAVi) and reservoir strain (RAS), remains to be clarified. Accordingly, the aim of our study is to investigate the association with outcome of RAR in patients with STR.

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Elevated left atrial pressure during exercise is a hallmark of heart failure (HF) and is associated with adverse left atrial remodeling and poor outcomes. To decompress the pressure-overloaded left atrium in patients with HF, several device-based approaches have been developed to create a permanent, pressure-dependent, left-to-right interatrial shunt. Such approaches are currently in various stages of investigations in both HF with reduced ejection fraction (EF) and HF with preserved EF.

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Article Synopsis
  • Clinical outcomes for patients with chronic heart failure (HF) have significantly improved, allowing many to safely spend time at high altitudes.
  • While heart failure does not prevent safe altitude stays, HF patients experience exercise performance reductions that worsen with altitude and severity of their condition.
  • It's essential for HF patients to have their functional capacity evaluated and receive tailored treatments for hypoxia to ensure safe adaptation to high altitude conditions.
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Pulmonary hypertension (PH) is a common complication of diseases affecting the left heart, mostly found in patients suffering from heart failure, with or without preserved left ventricular ejection fraction. Initially driven by a passive increase in left atrial pressure (postcapillary PH), several mechanisms may lead in a subset of patient to significant structural changes of the pulmonary vessels or a precapillary component. In addition, the right ventricle may be independently affected, which results in right ventricular to pulmonary artery uncoupling and right ventricular failure, all being associated with a worse outcome.

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Article Synopsis
  • - The study investigates the accuracy and precision of pulmonary artery wedge pressure (PAWP) as an indicator of left ventricular end-diastolic pressure (LVEDP) during exercise, particularly for diagnosing heart failure with preserved ejection fraction (HFpEF).
  • - A cohort of 46 participants underwent heart catheterization to compare PAWP and LVEDP values at rest and during exercise, with results showing a decent correlation but significant variability between the two measures.
  • - Findings suggest that while PAWP can provide a reasonably accurate estimate of LVEDP during exercise, there are still instances where the two measurements can lead to different conclusions regarding heart failure assessment.
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Background: Echocardiographic surrogates of right ventricle-to-pulmonary artery (RV-PA) coupling have been reported to be associated with outcomes in patients with secondary tricuspid regurgitation (STR). However, pulmonary artery systolic pressure (PASP) is difficult to estimate using echocardiography in patients with severe STR. The aim of the present study was to evaluate the predictive power of a surrogate of RV-PA coupling obtained using right ventricular (RV) volumes measured on three-dimensional echocardiography.

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Aims: The HFA-PEFF algorithm (Heart Failure Association-Pre-test assessment, Echocardiography and natriuretic peptide score, Functional testing in cases of uncertainty, Final aetiology) is a three-step algorithm to diagnose heart failure with preserved ejection fraction (HFpEF). It provides a three-level likelihood of HFpEF: low (score < 2), intermediate (score 2-4), or high (score > 4). HFpEF may be confirmed in individuals with a score > 4 (rule-in approach).

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Background: Although the assessment of left atrial (LA) mechanics has been reported to refine atrial fibrillation (AF) risk prediction, it doesn't completely predict AF recurrence. The potential added role of right atrial (RA) function in this setting is unknown. Accordingly, this study sought to evaluate the added value of RA longitudinal reservoir strain (RASr) for the prediction of AF recurrence after electrical cardioversion (ECV).

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Background: Right heart failure (RHF) is associated with a dismal prognosis in patients with pulmonary hypertension (PH). Exercise right heart catheterization may unmask right heart maladaptation as a sign of RHF. We sought to (1) define the normal limits of right atrial pressure (RAP) increase during exercise; (2) describe the right heart adaptation to exercise in PH owing to heart failure with preserved ejection fraction (PH-HFpEF) and in pulmonary arterial hypertension (PAH); and (3) identify the factors associated with right heart maladaptation during exercise.

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Background: Among patients with heart failure with preserved ejection fraction (HFpEF), a distinct hemodynamic phenotype has been recently described, ie, latent pulmonary vascular disease (HFpEF-latentPVD), defined by exercise pulmonary vascular resistance (PVR) >1.74 WU.

Objectives: This study aims to explore the pathophysiological significance of HFpEF-latentPVD.

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Patients with pulmonary embolism are a heterogeneous population and, after the acute phase and the first 3-6 months, the main issue is whether to continue, and hence how long and at what dose, or to stop anticoagulation therapy. In patients with venous thromboembolism (VTE), direct oral anticoagulants (DOACs) are the recommended treatment (class I, level of evidence B in the latest European guidelines), and in most cases, an "extended" or "long-term" low-dose therapy is warranted. This paper aims to provide a practical management tool to the clinician dealing with pulmonary embolism follow-up: from the evidence behind the most used exams (D-dimer, ultrasound Doppler of the lower limbs, imaging tests, recurrence and bleeding risk scores), and the use of DOACs in the extended phase, to six real clinical scenarios with the relative management in the acute phase and at follow-up.

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Background: Both secondary tricuspid regurgitation (STR) and heart failure with preserved ejection fraction (HFpEF) are relevant public health problems in the elderly population, presenting with potential overlaps and sharing similar risk factors. However, the impact of severe STR on hemodynamics and cardiorespiratory adaptation to exercise in HFpEF remains to be clarified.

Aim: To explore the impact of STR on exercise hemodynamics and cardiorespiratory adaptation in HFpEF.

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The combination of noradrenergic (reboxetine) plus antimuscarinic (oxybutynin) drugs (reb-oxy) reduced obstructive sleep apnea (OSA) severity but no data are available on its effects on cardiac autonomic modulation. We sought to evaluate the impact of 1-week reb-oxy treatment on cardiovascular autonomic control in OSA patients. OSA patients were randomized to a double-blind, crossover trial comparing 4 mg reboxetine plus 5 mg oxybutynin to a placebo for OSA treatment.

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Secondary (functional) tricuspid regurgitation (sTR) is common in patients with mitral regurgitation (MR). Because combined valvular heart disease affects long-term survival, in comparison with isolated MR or tricuspid regurgitation, it is essential to offer patients adequate treatment. Despite considerable experience, no conclusive data are yet available on the prognostic impact of concomitant tricuspid valve surgery at the time of mitral valve surgery.

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Objectives: We sought to analyze if left ventricular (LV) volumes and ejection fraction (EF) measured by three-dimensional echocardiography (3DE) have incremental prognostic value over measurements obtained from two-dimensional echocardiography (2DE) in patients referred to a high-volume echocardiography laboratory for routine, clinically-indicated studies.

Methods: We measured LV volumes and EF using both 2DE and 3DE in 725 consecutive patients (67% men; 59 ± 18 years) with various clinical indications referred for a routine clinical study.

Results: LV volumes were significantly larger, and EF was lower when measured by 3DE than 2DE.

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Pulmonary hypertension (PH) is associated with a poor prognosis in left heart disease (LHD). We sought to provide an updated analysis on the association of hemodynamic variables, such as pulmonary vascular resistance (PVR), pulmonary artery compliance (PAC), and diastolic pressure gradient (DPG), with prognosis in PH-LHD, through a systematic literature review. Sixteen articles were identified, including 9600 patients with LHD, heterogeneous in terms of age, sex, and etiology of cardiac disease.

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Aim: We sought to evaluate the differences in prognosis between the atrial (A-STR) and the ventricular (V-STR) phenotypes of secondary tricuspid regurgitation.

Materials And Methods: Consecutive patients with moderate or severe STR referred for echocardiography were enrolled. A-STR and V-STR were defined according to the last ACC/AHA guidelines criteria.

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