245 research outputs found

    Prospects for Gamma-Ray Bursts detection by the Cherenkov Telescope Array

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    The first Gamma-Ray Burst (GRB) catalog presented by the Fermi-Large Area Telescope (LAT) collaboration includes 28 GRBs, detected above 100 MeV over the first three years since the launch of the Fermi mission. However, more than 100 GRBs are expected to be found over a period of six years of data collection thanks to a new detection algorithm and to the development of a new LAT event reconstruction, the so-called "Pass 8." Our aim is to provide revised prospects for GRB alerts in the CTA era in light of these new LAT discoveries. We focus initially on the possibility of GRB detection with the Large Size Telescopes (LSTs). Moreover, we investigate the contribution of the Middle Size Telescopes (MSTs), which are crucial for the search of larger areas on short post trigger timescales. The study of different spectral components in the prompt and afterglow phase, and the limits on the Extragalactic background light are highlighted. Different strategies to repoint part of - or the entire array - are studied in detail.Comment: In Proceedings of the 34th International Cosmic Ray Conference (ICRC 2015), The Hague, The Netherland

    COVID-19 pandemic: what consequences for cardiac rehabilitation?

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    The ongoing COVID-19 pandemic spreading all around the world has stressed over its capabilities and determined profound changes in the health systems in all countries and has caused hundreds of thousand deaths. Health professionals have been called to a tremendous effort to deal with this emergency, often contaminating or succumbing themselves to the disease

    Prospects for Gamma-Ray Bursts detection by the Cherenkov Telescope Array

    Get PDF
    The first Gamma-Ray Burst (GRB) catalog presented by the Fermi-Large Area Telescope (LAT) collaboration includes 28 GRBs, detected above 100 MeV over the first three years since the launch of the Fermi mission. However, more than 100 GRBs are expected to be found over a period of six years of data collection thanks to a new detection algorithm and to the development of a new LAT event reconstruction, the so-called "Pass 8." Our aim is to provide revised prospects for GRB alerts in the CTA era in light of these new LAT discoveries. We focus initially on the possibility of GRB detection with the Large Size Telescopes (LSTs). Moreover, we investigate the contribution of the Middle Size Telescopes (MSTs), which are crucial for the search of larger areas on short post trigger timescales. The study of different spectral components in the prompt and afterglow phase, and the limits on the Extragalactic background light are highlighted. Different strategies to repoint part of - or the entire array - are studied in detail

    Clinical Characteristics and Course of Patients Entering Cardiac Rehabilitation with Chronic Kidney Disease: Data from the Italian Survey on Cardiac Rehabilitation

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    This survey shows the clinical risk profile, resource utilization, pharmacologic treatment, and course of cardiac rehabilitation (CR) programs in patients with chronic kidney disease (CKD). Data from 165 CR units in Italy were collected online from January 28 to February 10, 2008. The study cohort consisted of 2281 patients: 200 CKD patients and 2081 non-CKD patients. CKD patients were older and showed more comorbidity and complications during CR, a more complex clinical course and interventions with less functional evaluation, and a different pattern of drug therapy at hospital discharge. CKD patients had higher mortality during CR programs due to heart failure, respiratory insufficiency, and cognitive impairment. These findings suggest that patients with CKD should not be denied access to CR, provided careful attention to clinical status, possible complications, optimization of drug therapy, and close followup

    Clinical Characteristics and Course of Patients Entering Cardiac Rehabilitation with Chronic Kidney Disease: Data from the Italian Survey on Cardiac Rehabilitation

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    This survey shows the clinical risk profile, resource utilization, pharmacologic treatment, and course of cardiac rehabilitation (CR) programs in patients with chronic kidney disease (CKD). Data from 165 CR units in Italy were collected online from January 28 to February 10, 2008. The study cohort consisted of 2281 patients: 200 CKD patients and 2081 non-CKD patients. CKD patients were older and showed more comorbidity and complications during CR, a more complex clinical course and interventions with less functional evaluation, and a different pattern of drug therapy at hospital discharge. CKD patients had higher mortality during CR programs due to heart failure, respiratory insufficiency, and cognitive impairment. These findings suggest that patients with CKD should not be denied access to CR, provided careful attention to clinical status, possible complications, optimization of drug therapy, and close followup

    Relationship between heart rate recovery and inflammatory markers in patients with polycystic ovary syndrome: a cross-sectional study

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    <p>Abstract</p> <p>Background</p> <p>Polycystic ovary syndrome (PCOS) is an endocrine disease closely related to several risk factors for cardiovascular disease. An abnormal heart rate recovery (HRR), an easily-obtained measure derived from exercise stress test and closely related to an increased risk for cardiovascular mortality, has been recently described in PCOS women. A subclinical increase of the inflammation markers has been also observed in the PCOS. This study was designed to study the relationships between HRR and inflammatory markers in PCOS women.</p> <p>Methods</p> <p>Two-hundred forty-three young PCOS patients without known risk factors for cardiovascular risk were enrolled. All patients underwent hormonal and metabolic profile, white blood cells (WBCs) count and C-reactive protein (CRP). HRR was calculated as the difference between heart rate at peak exercise and heart rate at first minute of the cool-down period. Abnormal HRR was defined as ≤18 beats/min for standard exercise testing.</p> <p>Results</p> <p>Eighty-nine out of 243 patients presented abnormal HRR. Serum CRP (1.8 ± 0.7 vs. 1.1 ± 0.4 mg/dl, <it>p </it>< 0.001) and WBCs (7.3 ± 1.8 vs. 6.6 ± 1.5 10<sup>9 </sup>cells/l, <it>p </it>< 0.001) concentrations were significantly higher in PCOS patients with abnormal <it>versus </it>normal HRR. HRR was significantly associated with both CRP (r = -0.33, <it>p </it>< 0.001) and WBCs (r = -0.29, <it>p </it>< 0.001), although in a stepwise multiple regression HRR resulted independently associated with CRP (beta = -0.151, p = 0.001) alone. In a logistic multivariate model, the group within the highest quartile of CRP (odds ratio 1.59, 95% CI 1.07–2.33) was more likely to have abnormal HRR than those within the lowest quartile.</p> <p>Conclusion</p> <p>Abnormal HRR and inflammatory markers are closely associated in PCOS women acting probably in concert to increase the cardiovascular risk profile of these patients.</p

    Cardiopulmonary assessment in primary ciliary dyskinesia.

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    Background Primary ciliary dyskinesia (PCD) is a rare, usually autosomal recessive disorder of ciliary dysfunction associated with lung involvement, which has a great impact on health. There is limited information concerning the aerobic fitness of children and adolescents with PCD. The aim of this study was to assess cardiopulmonary functional capacity and its relationship with pulmonary function and physical activity (PA) levels in patients with PCD. Design Ten patients with PCD (age 13·2±2·8years) underwent spirometry and cardiopulmonary exercise testing. PA was investigated through a questionnaire. Eight age- and body mass index-matched healthy children were enrolled as controls. Main variables were forced expiratory volume at 1s, peak oxygen uptake (VO 2peak) and time spent in PA. Results Forty per cent of patients with PCD had impaired lung function as expressed by FEV 1<85% predicted. Only patients with impaired lung function exhibited reduced VO 2peak (18·1±7·9mL/kg/min). Time spent in total daily PA was slightly lower in patients than controls, with no difference between patients with normal or reduced lung function. In multiple regression models, male gender (??=0·518, P=0·018), age (??=0·752, P=0·035) and time spent in vigorous PA (??=0·353, P=0·049) were independent predictors of aerobic fitness. Conclusions Assessment of resting pulmonary function and cardiopulmonary functional capacity could contribute to the evaluation of pulmonary impairment in PCD. Given the benefit of physical exercise on airway clearance and on general health and quality of life, patients with PCD should be encouraged to adopt an active lifestyle
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