143 research outputs found
Mediterranean fish communities are struggling to adapt to global warming. Evidence from the western coast of Italy
BIM Methodology Applied to Architectural Heritage Preservation: Case Study of the Medina and Dungeons of Tetuán, Morocco
The aim of the proposed contribution is to investigate how the application of BIM methodology in the field of the architectural heritage can avail both the study of an historical building and its subsequent preservation. Starting from the analysis carried out in the Medina and Dungeons of Tetuán (Morocco), we propose a H-BIM (Historic Building Information Modelling) methodology focused on the pathological parametric study of the buildings (as-damaged model) and therefore obtain a specific information database for each architectural element. The goal of the work is to establish a digital parametric methodology that is both inherent to the pathological and geometric study of a vivienda of the Medina as well as applicable to diverse cases within that realm, starting with a hybrid traditional (CAD) and innovative (photogrammetry) database combined. Furthermore, the hybrid workflow allows to rise above the limitations that the (geographical) distance often presents from case studies and it allows overcoming the common difficulties encountered in a traditional restoration-conservative study in finding information. The choice of this particular case study enables evaluating the updatability of an H-BIM model and therefore the possibility of containing different information dating back to different phases of survey and project that can be parameterized and compared, with the aim of ensuring both the historical traceability of the degradation of the asset and its architectural composition over time. Lastly, an H-BIM catalogue of the different viviendas which were analysed in the preliminary phase is proposed, starting from a typical house in the Medina of Tetuán, so as to initiate a realistic data collection of the Medina of Tetuán with the aim of undertaking a preventive restoration without having to resort to interventions of emergency and structural reinforcement as foreseen in the case of the Ben Marzouk house and the dungeons (mazmorras)
EFFECT OF PELVIC POSITIONING AND TORSIONAL DEFORMITY ON CANINE ACETABULAR MORPHOLOGY WITH COMPUTED TOMOGRAPHY: A PHANTOM STUDY
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Ultrasound-guided removal of soft tissue foreign bodies in companion animals: A case series
Foreign bodies (FBs) retained in the subcutaneous tissues are a common reason for medical consultation.
In small animals, FBs usually consist of vegetal materials, especially grass awns. Failure to remove the FBs is likely
to give rise to acute or late complications. The surgical removal of the FBs can be invasive, costly and technically
challenging. Ultrasound has become a mainstay in the detection of FBs and it can be used to guide the extraction
of the FBs with a minimally invasive technique. This study describes the detection and extraction of soft-tissue
FBs in small animals. One hundred-sixty-two patients, presenting at two veterinary clinics with suspected FBs
retained in the soft tissues of various body districts, were considered. Once an ultrasound diagnosis was established,
the ultrasound-guided removal of the FB was performed. A high-frequency linear transducer, a skin disinfection,
sedation or anaesthesia was used when needed and a scalpel and some Hartmann forceps were also used. One
hundred-eighty-two FBs were successfully removed in all the patients. In six cases, the FB was identified during
a second ultrasonographic examination, after recurrence of the fistula. No complications were reported after
the procedure. The extraction of the FB was performed in an echographic suite in 138 cases and in a surgery room
with surgical intervention in 24 cases. In the latter situation, the surgical minimally invasive dissection of tissues
under ultrasound guidance was performed before the removal of the FB. In conclusion, the ultrasound-guided
removal of the FBs retained in the superficial soft tissue can be considered a good alternative to surgery. However,
failure to remove a FB does not preclude the removal by traditional surgery
The role of apparent diffusion coefficient (ADC) in the evaluation of lymph node status in patients with locally advanced cervical cancer : our experience and a review
Purpose: To evaluate the role of apparent diffusion coefficient (ADC) value measurement in the diagnosis of metastatic lymph nodes (LNs) in patients with locally advanced cervical cancer (LACC) and to present a systematic review of the literature. Material and methods: Magnetic resonance imaging (MRI) exams of patients with LACC were retrospectively eva luated. Mean ADC, relative ADC (rADC), and correct ADC (cADC) values of enlarged LNs were measured and compared between positron emission tomography (PET)-positive and PET-negative LNs. Comparisons were made using the Mann-Whitney U-test and Student’s t-test. ROC curves were generated for each parameter to identify the optimal cut-off value for differentiation of the LNs. A systematic search in the literature was performed, exploring several databases, including PubMed, Scopus, the Cochrane library, and Embase. Results: A total of 105 LNs in 34 patients were analysed. The median ADC value of PET-positive LNs (0.907 × 10-3 mm2/s [0.780-1.080]) was lower than that in PET-negative LNs (1.275 × 10-3 mm2/s [1.063-1.525]) (p < 0.05). rADC and cADC values were lower in PET-positive LNs (rADC: 0.120 × 10-3 mm2/s [–0.060-0.270]; cADC: 1.130 [0.980-1.420]) than in PET-negative LNs (rADC: 0.435 × 10-3 mm2/s [0.225-0.673]; cADC: 1.615 [1.210-1.993]) LNs (p < 0.05). ADC showed the highest area under the curve (AUC 0.808).
Conclusions: Mean ADC, rADC, and cADC were significantly lower in the PET-positive group than in the PET-negative group. The ADC cut-off value of 1.149 × 10-3 mm2/s showed the highest sensitivity. These results confirm the usefulness of ADC in differentiating metastatic from non-metastatic LNs in LACC
Perioperative anaphylactic risk score for risk-oriented premedication
Basing on the current knowledge, this paper is aimed to review the core characteristics of the most relevant therapeutic agents (steroids and antihistamines), administered to prevent perioperative anaphylaxis. Moreover, the Authors propose the validation of a Global Anaphylactic Risk Score, built up by recording the individual scores related to the most relevant anaphylaxis parameters (i.e. medical history, symptoms and medication for asthma, rhinitis and urticaria etc) and by adding them on all together; the score could be used in the preoperative phase to evaluate the global anaphylactic risk and to prescribe risk-oriented premedication protocols
Determinants of long COVID among adults hospitalized for SARS-CoV-2 infection: A prospective cohort study
Rationale: Factors associated with long-term sequelae emerging after the acute phase of COVID-19 (so called "long COVID") are unclear. Here, we aimed to identify risk factors for the development of COVID-19 sequelae in a prospective cohort of subjects hospitalized for SARS-CoV-2 infection and followed up one year after discharge. Methods: A total of 324 subjects underwent a comprehensive and multidisciplinary evaluation one year after hospital discharge for COVID-19. A subgroup of 247/324 who consented to donate a blood sample were tested for a panel of circulating cytokines. Results: In 122 patients (37.8%) there was evidence of at least one persisting physical symptom. After correcting for comorbidities and COVID-19 severity, the risk of developing long COVID was lower in the 109 subjects admitted to the hospital in the third wave of the pandemic than in the 215 admitted during the first wave, (OR 0.69, 95%CI 0.51-0.93, p=0.01). Univariable analysis revealed female sex, diffusing capacity of the lungs for carbon monoxide (DLCO) value, body mass index, anxiety and depressive symptoms to be positively associated with COVID-19 sequelae at 1 year. Following logistic regression analysis, DLCO was the only independent predictor of residual symptoms (OR 0.98 CI 95% (0.96-0.99), p=0.01). In the subgroup of subjects with normal DLCO (> 80%), for whom residual lung damage was an unlikely explanation for long COVID, the presence of anxiety and depressive symptoms was significantly associated to persistent symptoms, together with increased levels of a set of pro-inflammatory cytokines: interferon-gamma, tumor necrosis factor-alpha, interleukin (IL)-2, IL-12, IL-1β, IL-17. In logistic regression analysis, depressive symptoms (p=0.02, OR 4.57 [1.21-17.21]) and IL-12 levels (p=0.03, OR 1.06 [1.00-1.11]) 1-year after hospital discharge were independently associated with persistence of symptoms. Conclusions: Long COVID appears mainly related to respiratory sequelae, prevalently observed during the first pandemic wave. Among patients with little or no residual lung damage, a cytokine pattern consistent with systemic inflammation is in place
Natural History and Outcome of Hepatic Vascular Malformations in a Large Cohort of Patients with Hereditary Hemorrhagic Teleangiectasia
BACKGROUND: Hereditary hemorrhagic telangiectasia is a genetic disease characterized by teleangiectasias involving virtually every organ. There are limited data in the literature regarding the natural history of liver vascular malformations in hemorrhagic telangiectasia and their associated morbidity and mortality.
AIM: This prospective cohort study sought to assess the outcome of liver involvement in hereditary hemorrhagic telangiectasia patients.
METHODS: We analyzed 16 years of surveillance data from a tertiary hereditary hemorrhagic telangiectasia referral center in Italy. We considered for inclusion in this study 502 consecutive Italian patients at risk of hereditary hemorrhagic telangiectasia who presented at the hereditary hemorrhagic telangiectasia referral center and underwent a multidisciplinary screening protocol for the diagnosis of hereditary hemorrhagic telangiectasia. Of the 502 individuals assessed in the center, 154 had hepatic vascular malformations and were the subject of the study; 198 patients with hereditary hemorrhagic telangiectasia and without hepatic vascular malformations were the controls. Additionally, we report the response to treatment of patients with complicated hepatic vascular malformations.
RESULTS: The 154 patients were included and followed for a median period of 44 months (range 12-181); of these, eight (5.2%) died from VM-related complications and 39 (25.3%) experienced complications. The average incidence rates of death and complications were 1.1 and 3.6 per 100 person-years, respectively. The median overall survival and event-free survival after diagnosis were 175 and 90 months, respectively. The rate of complete response to therapy was 63%.
CONCLUSIONS: This study shows that substantial morbidity and mortality are associated with liver vascular malformations in hereditary hemorrhagic telangiectasia patients
Influence of Antisynthetase Antibodies Specificities on Antisynthetase Syndrome Clinical Spectrum TimeCourse
Introduction: Increased cardiovascular (CV) morbidity and mortality is observed in inflammatory joint diseases (IJDs) such as rheumatoid arthritis, ankylosing spondylitis, and psoriatic arthritis. However, the management of CV disease in these conditions is far from being well established.Areas covered: This review summarizes the main epidemiologic, pathophysiological, and clinical risk factors of CV disease associated with IJDs. Less common aspects on early diagnosis and risk stratification of the CV disease in these conditions are also discussed. In Europe, the most commonly used risk algorithm in patients with IJDs is the modified SCORE index based on the revised recommendations proposed by the EULAR task force in 2017.Expert opinion: Early identification of IJD patients at high risk of CV disease is essential. It should include the use of complementary noninvasive imaging techniques. A multidisciplinary approach aimed to improve heart-healthy habits, including strict control of classic CV risk factors is crucial. Adequate management of the underlying IJD is also of main importance since the reduction of disease activity decreases the risk of CV events. Non-steroidal anti-inflammatory drugs may have a lesser harmful effect in IJD than in the general population, due to their anti-inflammatory effects along with other potential beneficial effects.This research was partially funded by FOREUM—Foundation for Research in Rheumatolog
Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector
A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements
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