Publications by authors named "Merella P"

Background: Antithrombotic therapy (AT) after left atrial appendage occlusion (LAAO) in patients with non-valvular atrial fibrillation (NVAF) has the purpose of preventing device related thrombosis (DRT), avoiding embolic events; nevertheless, the correct antithrombotic regimen after LAAO is still under debate.

Aims: Aim of this substudy of the observational LOGIC registry was to describe the efficacy and safety of a light antithrombotic regimen, comprising single antiplatelet therapy or none, compared to a standard antithrombotic regimen, after a successful LAAO.

Methods: Patients with NVAF that underwent LAAO were previously included in the LOGIC registry.

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Objectives: Oral anticoagulation therapy (OAC) is often contraindicated in patients with atrial fibrillation (AF) and cerebral amyloid angiopathy (CAA) because of the high hemorrhagic risk. Left atrial appendage occlusion (LAAO) can prevent thromboembolic events while avoiding long-term anticoagulation. However, a short period of antithrombotic therapy (AT) is still recommended after LAAO, and, therefore, it is unclear whether patients with CAA can be candidates for LAAO.

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Article Synopsis
  • The study focuses on the diplectanid monogenean, a common gill parasite of the gilthead seabream found in the Mediterranean Sea, aiming to understand its population structure and genetic diversity through molecular analysis.
  • Researchers analyzed samples from wild and cage-reared gilthead seabream across fifteen locations in Tunisia, Italy, and Spain, revealing that there is likely just one species of the parasite widespread throughout the region, with evidence of recent population expansion.
  • The study shows high haplotype diversity and significant genetic variation among the parasite populations, with notable differences between those in the Adriatic Sea and other areas, suggesting considerable gene flow due to host movement.
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Background: We aimed to perform a meta-analysis of randomized trials comparing long-term outcomes of patients undergoing transcatheter aortic valve replacement (TAVR) vs surgical aortic valve replacement (SAVR) for severe aortic stenosis. The short-term efficacy and safety of TAVR are proven, but long-term outcomes are unclear.

Methods: We included randomized controlled trials comparing TAVR vs SAVR at the longest available follow-up.

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Aims: A paucity of studies addressed sex-related differences in clinical outcomes in the long term following acute coronary syndrome (ACS) treated with percutaneous coronary intervention (PCI). In these patients, it remains uncertain whether heart failure (HF) might exert a differential impact on the prognosis in the long term.

Methods: We queried a large-scale database of ACS patients undergoing PCI.

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Background: Chronic diseases have a negative impact on quality of life (QOL) and psychological health. There are limited related data regarding this topic in Brugada syndrome (BrS). We evaluated the effects of the diagnosis of BrS on health-related QOL and psychological status among patients and their relatives.

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Barcoding studies have provided significant insights into phylogenetic relationships among species belonging to the genus (Crustacea, Isopoda). Herein the diversity of the Italian sea slater from Tunisia is studied for the first time. Samples were collected from 18 localities in Tunisia, and the analysis included previously published sequences from Italy and Greece available in GenBank.

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Background: Debates persist regarding the optimal duration of dual antiplatelet therapy (DAPT) after percutaneous coronary intervention (PCI) in coronary artery disease (CAD). Recent trials have introduced a novel approach involving P2Y12 inhibitor monotherapy with ticagrelor or clopidogrel, after a short DAPT. However, the effectiveness and safety of this strategy remains to be established.

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Virtual reality offers a multisensory experience to patients, allowing them to hear, watch, and interact in a virtual environment. Immersive virtual reality is particularly suitable for the purpose of completely isolating patients from the external environment to transport them away from the suffering related to the disease. On this state of the art, we summarize the available literature on the effectiveness of virtual reality on various physical and psychological outcomes in patients with atherosclerotic cardiovascular disease.

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Background: Cardiac procedures often induce pain and anxiety in patients, adversely impacting recovery. Pharmachological approaches have limitations, prompting exploration of innovative digital solutions like virtual reality (VR). Although early evidence suggests a potential favourable benefit with VR, it remains unclear whether the implementation of this technology can improve pain and anxiety.

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Non-valvular atrial fibrillation (AF) and cerebral amyloid angiopathy (CAA) are two common diseases in elderly populations. Despite the effectiveness of oral anticoagulant therapy in cardioembolic stroke prevention, intracranial hemorrhage represents the most serious complication of these therapies. Cerebral amyloid angiopathy is one of the main risk factors for spontaneous intracranial bleeding, and this risk is highly increased by age and concomitant antithrombotic therapies.

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Background: The prevalence of atrial fibrillation (AF) in end stage kidney disease (ESKD) patients undergoing dialysis is high, however, the high risk of bleeding often hampers with a correct anticoagulation in ESKD patients with AF, despite high thromboembolic risk. Left atrial appendage (LAA) occlusion is a anticoagulation (OAT) for thromboembolism prevention in AF populations with high hemorrhagic risk.

Methods And Results: The purpose of the study was to evaluate the efficacy and safety of LAA occlusion in a cohort of dialysis patients undergoing the procedure (LAA occlusion cohort,  = 106), in comparison with two other ESKD cohorts, one taking warfarin (Warfarin cohort,  = 114) and the other without anticoagulation therapy (No-OAT cohort,  = 148).

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Non-valvular AF is a common clinical condition associated with an increased risk of thromboembolic complications. As a consequence, oral anticoagulant therapy (OAT) is the cornerstone of non-valvular AF management. Despite the well-established efficacy of OAT, many patients cannot receive this preventive therapy due to bleeding or a high risk of bleeding.

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Background: In the setting of coronary artery dissection, both spontaneous and iatrogenic, fixing the intimal tear, usually with stent implantation, can be extremely challenging if the distal wire position has been lost. Common complications are mainly related to the inadvertent subintimal tracking of the guidewire while attempting to gain the distal true lumen.

Aims: To report the registry results of using the SUOH 0.

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Aging of the vascular system is associated with deep changes of the structural proprieties of the arterial wall. Arterial hypertension, diabetes mellitus, and chronic kidney disease are the major determinants for the loss of elasticity and reduced compliance of vascular wall. Arterial stiffness is a key parameter for assessing the elasticity of the arterial wall and can be easily evaluated with non-invasive methods, such as pulse wave velocity.

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Article Synopsis
  • This research investigates how brain-encysting trematodes affect host fish behavior by mapping the distribution of metacercariae in both wild and farmed fish.
  • The study found that metacercariae primarily target specific brain regions, like the optic lobe and medulla oblongata, which could influence sensory and motor functions crucial for fish survival.
  • While the research provides valuable insights into the effects of these parasites on fish brains, further experiments are needed to determine if the observed brain occupancy causes behavioral changes in the hosts.
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Aims: To compare outcomes of patients who underwent left atrial appendage occlusion (LAAO) for nonvalvular atrial fibrillation (NVAF) and contraindication to anticoagulants due to history of either gastrointestinal (GI) or intracranial (IC) bleeding.

Methods: Patients with NVAF that underwent LAAO for GI or IC bleeding from seven centers were included in this observational study. Baseline characteristics, procedural features, and follow-up data were collected, and compared between the two groups.

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Health care spending in Italy is high and continues to increase; assessing the long-term health and economic outcomes of new therapies is essential. Atopic dermatitis (AD) is a chronic, pruritic, immune-mediated inflammatory dermatosis, a clinical condition that significantly affects patients' quality of life at a high cost and requires continuous care. This retrospective study aimed to assess the direct cost and adverse drug reactions (ADRs) of Dupilumab and patients' clinical outcomes.

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Article Synopsis
  • The study focuses on Sparicotyle chrysophrii, a parasite affecting the gilthead sea bream, which can lead to disease and death in aquaculture.
  • It investigates genetic variation and population structure using two molecular markers (28S rRNA and COI), analyzing samples from both wild and farmed fish in Italy and Spain.
  • Findings indicate low genetic diversity within S. chrysophrii from S. aurata, potential identification of a sister species from another host, and initial evidence of parasite transfer between wild and farmed populations.
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Atrial fibrillation (AF) is the most common arrhythmia. The most fearful complication of AF is represented by cardio-embolic stroke and 30% of ischaemic strokes are attributable to AF. The prevention of cardio-embolic risk is therefore based on oral anticoagulant therapy (OAT).

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This study aims to investigate the level of genetic variability of flukes isolated from cattle in Algeria and to determine the phylogenetic and phylogeographic relationships with sequences isolated worldwide. Mitochondrial (Cytochrome c Oxidase subunit I gene - COI) and nuclear markers (Internal Transcribed Spacers of nuclear ribosomal DNA - ITS) for 24 flukes isolated from 12 cattle in North Algeria were characterised. Only two haplotypes were obtained for the COI gene, resulting in a low level of genetic variation.

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During PCI, stent entrapment and dislodgment in the coronary arteries is a rare but potentially fatal complication that can lead to emergent cardiac surgery. Percutaneous stent retrieval is an alternative way to solve this challenging complication while avoiding cardiac surgery.

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The microcotylid is a pathogenic monogenean infecting , a candidate for species diversification in the Mediterranean aquaculture. Life-history stages of commonly co-occur in field infections, but to date, morphological data have only been provided for oncomiracidia and adults although identifying life-history stages can be useful in infection management. A total of 114 specimens of were analysed to characterize the developmental events and to assess morphological and morphometric variations before and after maturity.

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