61 research outputs found

    Stellar Population gradients in galaxy discs from the CALIFA survey

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    While studies of gas-phase metallicity gradients in disc galaxies are common, very little has been done in the acquisition of stellar abundance gradients in the same regions. We present here a comparative study of the stellar metallicity and age distributions in a sample of 62 nearly face-on, spiral galaxies with and without bars, using data from the CALIFA survey. We measure the slopes of the gradients and study their relation with other properties of the galaxies. We find that the mean stellar age and metallicity gradients in the disc are shallow and negative. Furthermore, when normalized to the effective radius of the disc, the slope of the stellar population gradients does not correlate with the mass or with the morphological type of the galaxies. Contrary to this, the values of both age and metallicity at \sim2.5 scale-lengths correlate with the central velocity dispersion in a similar manner to the central values of the bulges, although bulges show, on average, older ages and higher metallicities than the discs. One of the goals of the present paper is to test the theoretical prediction that non-linear coupling between the bar and the spiral arms is an efficient mechanism for producing radial migrations across significant distances within discs. The process of radial migration should flatten the stellar metallicity gradient with time and, therefore, we would expect flatter stellar metallicity gradients in barred galaxies. However, we do not find any difference in the metallicity or age gradients in galaxies with without bars. We discuss possible scenarios that can lead to this absence of difference.Comment: 24 pages, 17 figures, accepted for publication in A&

    Barriers associated with emergency medical service activation in Italian patients with ST-segment elevation acute coronary syndromes

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    Abstract Background Many ST-segment elevation acute coronary syndrome (STEACS) patients fail to activate the Emergency Medical System (EMS), with possible dramatic consequences. Prior studies focusing on barriers to EMS activation include patients with any acute coronary syndrome (ACS) without representation of southern European populations. However, barriers are influenced by the ACS type and by socio-demographic and racial factors. Purpose We aimed to investigate the barriers to EMS call for patients diagnosed for STEACS in Italy. Methods A prospective, single-center, survey-based study, including all the patients treated with primary percutaneous coronary intervention for STEACS in a tertiary hospital in northern Italy from 1st June 2018 to 31st May 2020. Results The questionnaire was filled out by 293 patients. The majority of the participants were males (74%), married (70.4%), with a high-school degree (38.4%) and with a median age of 62 years. Chest pain as a possible symptom related to a cardiovascular attack is known by most of the respondents (89%), and left arm pain/shake by 53.7% of them, whilst the other possible signs and symptoms (i.e. dyspnea, asthenia, sweating, nausea, vomiting, dizziness) were unknown to the majority of the participants. Only 191 (65.2%) of the participants activated the EMS after symptoms onset. The main reasons for not calling EMS were the perception that symptoms were not related to an important health problem (45.5%) and that a private vehicle is faster than EMS to reach the hospital (34.7%). The median time to first medical contact was 60 minutes, and it was significantly higher in the patients who did not called EMS compared to those who did (180 [60–420] mins vs 35 [15–120] mins, p<0.001). The patients who called a private doctor after symptoms onset did not called EMS more frequently than those who did not (5.9% vs 8.2%, p=0.3). Moreover, 30% of the patients who did not call the EMS would still act in the same way if a new episode occurred and the main reasons for this were that they think to be faster than EMS (57.1%) and to live close to the hospital (17.9%). Analyzing predictors of EMS activation, only prior history of cardiovascular disease has been demonstrated to be a predictor of calling the EMS in case of symptoms suspected for STEACS. Conclusions Our study, from the southern Europe, showed that a substantial percentage of patients with symptoms suspected for STEACS preferred private vehicle rather than activating the EMS. Our results highlight the need for information campaigns targeted to both the general population and medical doctors, stressing that the EMS is faster than a private vehicle to direct the patient to the right hospital and increasing the awareness of the people on the type of possible heart attack symptoms, which seem to be the most neglected issues by patients who did not call the EMS. Funding Acknowledgement Type of funding sources: None

    Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

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    Funder: European Society of Intensive Care Medicine; doi: http://dx.doi.org/10.13039/501100013347Funder: Flemish Society for Critical Care NursesAbstract: Purpose: Intensive care unit (ICU) patients are particularly susceptible to developing pressure injuries. Epidemiologic data is however unavailable. We aimed to provide an international picture of the extent of pressure injuries and factors associated with ICU-acquired pressure injuries in adult ICU patients. Methods: International 1-day point-prevalence study; follow-up for outcome assessment until hospital discharge (maximum 12 weeks). Factors associated with ICU-acquired pressure injury and hospital mortality were assessed by generalised linear mixed-effects regression analysis. Results: Data from 13,254 patients in 1117 ICUs (90 countries) revealed 6747 pressure injuries; 3997 (59.2%) were ICU-acquired. Overall prevalence was 26.6% (95% confidence interval [CI] 25.9–27.3). ICU-acquired prevalence was 16.2% (95% CI 15.6–16.8). Sacrum (37%) and heels (19.5%) were most affected. Factors independently associated with ICU-acquired pressure injuries were older age, male sex, being underweight, emergency surgery, higher Simplified Acute Physiology Score II, Braden score 3 days, comorbidities (chronic obstructive pulmonary disease, immunodeficiency), organ support (renal replacement, mechanical ventilation on ICU admission), and being in a low or lower-middle income-economy. Gradually increasing associations with mortality were identified for increasing severity of pressure injury: stage I (odds ratio [OR] 1.5; 95% CI 1.2–1.8), stage II (OR 1.6; 95% CI 1.4–1.9), and stage III or worse (OR 2.8; 95% CI 2.3–3.3). Conclusion: Pressure injuries are common in adult ICU patients. ICU-acquired pressure injuries are associated with mainly intrinsic factors and mortality. Optimal care standards, increased awareness, appropriate resource allocation, and further research into optimal prevention are pivotal to tackle this important patient safety threat

    I bisogni dei familiari dei pazienti ricoverati in terapia intensiva (aperta vs chiusa)

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    Introduzione: il ricovero di un proprio caro in terapia intensiva provoca un profondo cambiamento nella gestione della vita quotidiana della famiglia. Questa situazione fa emerge la necessit\ue0 di svolgere ricerche che analizzino i bisogni dei familiari per comprenderne i problemi che sorgono durante la degenza in Terapia Intensiva (TI). Obiettivo: rilevare i bisogni dei familiari dei pazienti ricoverati in terapia intensiva confrontando le differenze emerse tra TI aperte e TI chiuse. Materiali e metodi: somministrazione del questionario Critical Care Family Needs Inventory (CCFNI) ai familiari dei pazienti di 8 TI dopo 36 ore dal ricovero. Risultati: i 66 questionari distribuiti sono stati compilati soprattutto dal coniuge o dal figlio/a. Non emergono differenze statisticamente significative tra i punteggi delle domande in funzione delle caratteristiche considerate nel campione ovvero: il grado di parentela del compilatore, la sua et\ue0, le ore di lavoro, il livello di istruzione, il tempo impiegato per giungere in ospedale, gli anni del paziente e le pregresse esperienze di ricovero. Discussione: i bisogni identificati come prioritari possono essere ricondotti in gran parte alla necessit\ue0 di ricevere informazioni sufficienti e adeguate circa l\u2019andamento clinico del paziente; quanto riscontrato \ue8 concorde con la letteratura. Conclusioni: sono da implementare e sostenere i modelli assistenziali e organizzativi che possano permettere al personale di intraprendere nuove strategie operative e creare strumenti in grado di accogliere le necessit\ue0 manifestate dai familiari

    Quality of life of adult survivors after extra corporeal membrane oxygenation (ECMO) : a quantitative study

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    Introduction: Extracorporeal Membrane Oxygenation (ECMO) is a technique used in the treatment of patients with severe respiratory failure. A lot of studies in the literature investigated the survival rate of patients treated with ECMO, but few are those that assess the long-term outcomes and the quality of life (QoL) of survivors. Materials and Methods: A retrospective observational study with prospective QoL assessment through administration of the questionnaire EuroQol-5 Dimension was conducted in acute respiratory distress syndrome patients who h ad ECMO as a rescue therapy for reversible refractory hypoxemia from January 2013 until December 2015 in an Italian referral ECMO center. Results: Forty patients were enrolled, but the telephone interview was possible only in 17. The interviewed patients presented a reduction in QoL in the items concerning pain (59%), followed by problems regarding mobility (47%) and anxiety (47%). The patients' perceived QoL, showed in a 0 to100 scale (0 being the worst, 100 being the best value), is of 75% (interquartile range, 70-80). Discussion: The problems found are in agreement with the literature about this particular type of patients. Conclusion: Most ECMO patients have good physical and social functioning after hospital discharge
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