Publications by authors named "Valeria Calvi"

Chemotherapy-induced cardiomyopathy (CHIC) represents a growing clinical challenge due to the increasing use of cardiotoxic treatments. These therapies can lead to progressive myocardial dysfunction, ultimately resulting in heart failure. Cardiac resynchronization therapy (CRT) has been widely investigated in selected patients with chronic heart failure; however, those with CHIC remain underrepresented in CRT trials.

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Background: Variable evidence exists about the efficacy of Cardiac resynchronization therapy (CRT) in women vs. men with reduced left ventricular ejection fraction (LVEF) and wide QRS complex. Current guidelines, hindered by underrepresentation of women in clinical trials, lack definitive recommendations.

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Background And Objective: Device-detected subclinical atrial fibrillation (DDAF) and diabetes mellitus (DM) are common in patients with cardiac implantable devices. Our objective was to compare DDAF incidence between diabetic and non-diabetic patients with implantable cardioverter-defibrillator (ICD) or cardiac resynchronization therapy defibrillator (CRT-D), using propensity score (PS) matching to adjust for confounders.

Methods: Data from the Home Monitoring Expert Alliance dataset were analyzed for patients with ICD or CRT-D and no prior clinical AF.

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Background: The safety of subcutaneous implantable cardioverter defibrillator (S-ICD) recipients who lead active lifestyles and engage in recreational sports is unknown. We aimed to evaluate the association between lifestyle and recreational sports and the occurrence of arrhythmia- and device-related complications, appropriate and inappropriate shocks in S-ICD recipients.

Methods: We assessed a cohort of young-adult (15-65 years) S-ICD patients, evaluated their physical activity with IPAQ (International Physical Activity Questionnaire), and assessed the association between lifestyle and recreational sports on S-ICD safety and shocks.

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The historical restriction of magnetic resonance imaging (MRI) for patients with cardiac implantable electronic devices (CIEDs) has been lifted by certified MRI-conditional systems in recent years. Mixed-brand CIED systems consisting of a generator from one manufacturer and at least one lead from another manufacturer are not certified for MRI. We evaluated the temporal trend in the prevalence of mixed-brand systems in the era of MRI-conditional systems.

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Article Synopsis
  • Inappropriate therapies (ITs) in patients with implantable cardioverter-defibrillators (ICDs) are often triggered by supraventricular tachyarrhythmias (SVTs).
  • The THINGS study analyzed 526 patients with single-lead ICDs to estimate the IT incidence and identified factors like younger age and history of atrial fibrillation as significant risk contributors.
  • Results showed a low IT rate of 4.2% at one year and 7.1% at two years, with dual-chamber (DC) discrimination showing a trend towards fewer ITs compared to single-chamber (SC) discrimination in the VT zone.
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  • Subclinical atrial fibrillation (AF) increases risks of developing clinical AF, stroke, and cardiovascular death; researchers aimed to test if closed loop stimulation (CLS) could reduce atrial high-rate episodes (AHREs) in pacemaker patients compared to conventional dual-chamber rate-adaptive pacing (DDDR).
  • A study with 1,210 patients showed that those using CLS had a lower incidence of the primary endpoint (first AHRE lasting ≥6 min, stroke, or TIA) compared to DDDR over a 3-year period, particularly effective in patients without atrioventricular block or AF history.
  • The findings suggest that dual-chamber CLS significantly reduces AHRE occurrence, highlighting its potential benefits for patients
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Background: Atrial high-rate episodes (AHREs) are frequent in patients with cardiac implantable electronic devices. A decrease in device-detected P-wave amplitude may be an indicator of periods of increased risk of AHRE.

Objective: The objective of this study was to assess the association between P-wave amplitude and AHRE incidence.

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Article Synopsis
  • This study looked at how heart rates while sleeping and over 24 hours can affect patients with heart problems who use special devices to help their hearts.
  • Researchers found that patients with higher heart rates (more than 65 beats while sleeping and over 75 beats in a day) were at a greater risk of serious health problems, like dying or having dangerous heart rhythms.
  • The results suggest that keeping heart rates lower can help these patients stay safer and healthier.
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Introduction: Thoracic impedance (TI) drops measured by implantable cardioverter-defibrillators (ICDs) have been reported to correlate with ventricular tachycardia/fibrillation (VT/VF). The aim of our study was to assess the temporal association of decreasing TI trends with VT/VF episodes through a longitudinal analysis of daily remote monitoring data from ICDs and cardiac resynchronization therapy defibrillators (CRT-Ds).

Methods And Results: Retrospective data from 2384 patients were randomized 1:1 into a derivation or validation cohort.

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Background: Causes of sex differences in incidence of sustained ventricular arrhythmias (SVAs) are poorly understood.

Objectives: This study aims to investigate sex-specific risk of SVAs and device therapies by balancing sex groups in relation to several baseline characteristics with the propensity score (PS).

Methods: We used a large remote monitoring dataset from implantable cardioverter-defibrillators (ICDs) and cardiac resynchronization therapy defibrillators (CRT-Ds).

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Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia and catheter ablation, which can be used in symptomatic patients refractory to antiarrhythmic therapy. Pulmonary vein isolation (PVI) remains the cornerstone of any ablation procedure. A major limitation of current catheter ablation procedures is important to recognize because even when the PVI is performed in highly experienced centers, PVI reconnection was documented in about 20% of patients.

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Background: Defibrillation testing (DT) can be omitted in patients undergoing transvenous implantable cardioverter-defibrillator (T-ICD) implantation, but it is still recommended for patients at risk for a high defibrillation threshold and for ICD generator changes. Moreover, DT is still recommended on implantation of subcutaneous ICD (S-ICD). The aim of the present survey was to analyze the current practice of DT during T-ICD and S-ICD implantations.

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The variation between rest and peak stress end-systolic pressure-volume relation (ΔESPVR) is an index of myocardial contractility, easily obtained during routine stress echocardiography and never tested during dipyridamole stress-cardiac magnetic resonance (CMR). We assessed the ΔESPVR index in patients with known/suspected coronary artery disease (CAD) who underwent dipyridamole stress-CMR. One-hundred consecutive patients (24 females, 63.

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Purpose: The purpose of this study was to assess the available mortality risk stratification models for implantable cardioverter defibrillator (ICD) and cardiac resynchronization therapy defibrillator (CRT-D) patients.

Methods: We conducted a review of mortality risk stratification models and tested their ability to improve prediction of 1-year survival after implant in a database of patients who received a remotely controlled ICD/CRT-D device during routine care and included in the independent Home Monitoring Expert Alliance registry.

Results: We identified ten predicting models published in peer-reviewed journals between 2000 and 2021 (Parkash, PACE, MADIT, aCCI, CHA2DS2-VASc quartiles, CIDS, FADES, Sjoblom, AAACC, and MADIT-ICD non-arrhythmic mortality score) that could be tested in our database as based on common demographic, clinical, echocardiographic, electrocardiographic, and laboratory variables.

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Aims: There are conflicting data on the benefit of cardiac resynchronization therapy (CRT) in heart failure (HF) patients with permanent atrial fibrillation (AF). We aimed to compare patient outcomes according to the presence or absence of permanent AF at device implantation.

Methods And Results: We retrospectively analysed remote monitoring data from 1141 CRT defibrillators.

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Article Synopsis
  • Researchers created and validated an algorithm to predict heart failure hospitalizations using data from implanted defibrillators in 918 patients, focusing on various health metrics gathered through remote monitoring.
  • The algorithm combined heart rate patterns, activity levels, and a baseline risk assessment (Seattle HF Model) into a single index, achieving strong predictive capabilities with a C-statistics of 0.89 during the study.
  • The algorithm successfully predicted about 65.5% of heart failure hospitalizations with a low false alert rate of 0.7 per patient-year, indicating it could effectively aid in timely intervention.
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Introduction: Factors influencing malignant arrhythmia onset are not fully understood. We explored the circadian periodicity of ventricular arrhythmias (VAs) in patients with implantable cardioverter and cardiac resynchronization defibrillators (ICD/CRT-D).

Methods: Time, morphology (monomorphic/polymorphic), and mode of termination (anti-tachycardia pacing [ATP] or shock) of VAs stored in a database of remote monitoring data were adjudicated.

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A significant problem for patients undergoing oral anticoagulation therapy is gastrointestinal bleeding (GIB), a problem that has become increasingly urgent following the introduction of direct oral anticoagulants (DOACs). Furthermore, in recent years a greater focus has been placed on the quality of life (QOL) of patients on long-term oral anticoagulant therapy, which necessitates changes in lifestyle, as well as posing an increased risk of bleeding without producing objective symptomatic relief. Here, we examine current evidence linked to GIB associated with oral anticoagulants, with a focus on randomized control trials, meta-analyses, and postmarketing observational studies.

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Management of recent-onset (<36 h) atrial fibrillation (AF) in the emergency room is highly variable, particularly concerning the type and timing of cardioversion, and the logistics of the treatment pathway. In clinical practice, it is fairly common for patients with recent-onset AF an attempt at re-establishing sinus rhythm, either with electric or pharmacologic cardioversion, as soon as feasible. Nonetheless, a 'wait-and-see' approach, and potentially delayed cardioversion, could represent a valid alternative to early cardioversion, considering that, often, in recent-onset AF, sinus rhythm is re-established spontaneously, thus repealing the need for active cardioversion, hence avoiding the possible risks of treatment.

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Background: COVID-19 pandemic impacted on heart failure patients' lifestyle and quality of life, affecting both physical activity levels and state of health.

Methods: Demographic data and device records were extracted for patients with heart failure in the 16 weeks at the turn of lockdown during pandemic. To explore the variability across the lockdown period, a week-to-week analysis was performed.

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Background: Current medication adherence telemonitoring systems have several limitations prompting the need for simpler, low-cost and widely applicable tools. To meet these needs, we propose a novel method consisting in sending a digital feedback of medication intake by just reading a pre-defined Quick Response (QR) code attached on the pills box.

Methods: To assess the potential clinical applicability of the proposed QR code-based task, its feasibility was tested among elderly with heart diseases.

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Background: Parameters measured during implantable cardioverter defibrillator (ICD) implant also depend on bioelectrical properties of the myocardium. We aimed to explore their potential association with clinical outcomes in patients with single/dual-chamber ICD and cardiac resynchronization therapy defibrillator (CRT-D).

Methods: In the framework of the Home Monitoring Expert Alliance, baseline electrical parameters for all implanted leads were compared by the occurrence of all-cause mortality, adjudicated ventricular arrhythmia (VA), and atrial high-rate episode lasting ≥24 hours (24 h AHRE).

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