170 research outputs found

    Investigating the Role of Minimally Invasive Surgery in Patients with Chronic Pulmonary Disease.

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    In the recent years, the role of minimally invasive surgery (e.g., laparoscopic or robotic assisted surgery) has emerged for the treatments of several benign and malignant conditions [1–4]. Growing..

    Excel spectroscopic tools to visualize, analyze and manipulate remotely sensed data of planetary bodies. This work has been developed under the ASI-INAF agreement n. 2023-6-HH.0.

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    This manual describes how to use an interactive Excel tool that provides a quick and easy way to visualize and manipulate laboratory spectroscopic data

    Ultrafast Charge Carrier Dynamics in Vanadium-Modified TiO2 Thin Films and Its Relation to Their Photoelectrocatalytic Efficiency for Water Splitting

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    Light absorption and charge transport in oxide semiconductors can be tuned by the introduction, during deposition, of a small quantity of foreign elements, leading to the improvement of the photoelectrocatalytic performance. In this work, both unmodified and vanadium-modified TiO2 thin films deposited by radio-frequency magnetron sputtering are investigated as photoanodes for photoelectrochemical water splitting. Following a structural characterization by X-ray diffraction, atomic force microscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy, photoelectrocatalysis is discussed based on ultrafast transient absorbance spectroscopy measurements. In particular, three different pump wavelengths from UV to the visible range are used (300, 390, and 530 nm) in order to cover the relevant photoactive spectral range of modified TiO2. Incident photon-to-current conversion efficiency spectra show that incorporation of vanadium in TiO2 extends water splitting in the visible range up to approximate to 530 nm, a significant improvement compared to unmodified TiO2 that is active only in the UV range less than or similar to 390 nm. However, transient absorbance spectroscopy clearly reveals that vanadium accelerates electron-hole recombination upon UV irradiation, resulting in a lower photon-to-current conversion efficiency in the UV spectral range with respect to unmodified TiO2. The new photoelectrocatalytic activity in the visible range is attributed to a V-induced introduction of intragap levels at approximate to 2.2 eV below the bottom of the conduction band. This is confirmed by long-living transient signals due to electrons photoexcited into the conduction band after visible light (530 nm) pulses. The remaining holes migrate to the semiconductor-electrolyte interface where they are captured by long-lived traps and eventually promote water oxidation under visible light

    The Anesthesiologist's Perspective Regarding Non-intubated Thoracic Surgery: A Scoping Review

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    Non-intubated thoracic surgery (NITS) is a growing practice, alongside minimally invasive thoracic surgery. To date, only a consensus of experts provided opinions on NITS leaving a number of questions unresolved. We then conducted a scoping review to clarify the state of the art regarding NITS. The systematic review of all randomized and non-randomized clinical trials dealing with NITS, based on Pubmed, EMBASE, and Scopus, retrieved 665 articles. After the exclusion of ineligible studies, 53 were assessed examining: study type, Country of origin, surgical procedure, age, body mass index, American Society of Anesthesiologist's physical status, airway management device, conversion to orotracheal intubation and pulmonary complications rates and length of hospital stay. It emerged that NITS is a procedure performed predominantly in Asia, and certain European Countries. In China, NITS is more frequently performed for parenchymal resection surgery, whereas in Europe, it is mainly employed for pleural pathologies. The most commonly used device for airway management is the laryngeal mask. The conversion rate to orotracheal intubation is a~3%. The results of the scoping review seem to suggest that NITS procedures are becoming increasingly popular, but its role needs to be better defined. Further randomized clinical trials are needed to better define the role of the clinical variables possibly impacting on the technique effectiveness. SYSTEMATIC REVIEW REGISTRATION: https://osf.io/mfvp3/, identifier: 10.17605/OSF.IO/MFVP3

    Wearable Health Technology for Preoperative Risk Assessment in Elderly Patients: The WELCOME Study

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    Preoperative identification of high-risk groups has been extensively studied to improve patients’ outcomes. Wearable devices, which can track heart rate and physical activity data, are starting to be evaluated for patients’ management. We hypothesized that commercial wearable devices (WD) may provide data associated with preoperative evaluation scales and tests, to identify patients with poor functional capacity at increased risk for complications. We conducted a prospective observational study including seventy-year-old patients undergoing two-hour surgeries under general anesthesia. Patients were asked to wear a WD for 7 days before surgery. WD data were compared to preoperatory clinical evaluation scales and with a 6-min walking test (6MWT). We enrolled 31 patients, with a mean age of 76.1 (SD ± 4.9) years. There were 11 (35%) ASA 3–4 patients. 6MWT results averaged 328.9 (SD ± 99.5) m. Daily steps and 2 as recorded using WD and were associated with 6MWT performance (R = 0.56, p = 0.001 and r = 0.58, p = 0.006, respectively) and clinical evaluation scales. This is the first study to evaluate WD as preoperative evaluation tools; we found a strong association between 6MWT, preoperative scales, and WD data. Low-cost wearable devices are a promising tool for the evaluation of cardiopulmonary fitness. Further research is needed to validate WD in this setting

    Preoperative SARS-CoV-2 infection screening before thoracic surgery during COVID-19 pandemic: a multicenter retrospective study

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    Objectives. During coronavirus disease (COVID-19) pandemic, preoperative screening before thoracic surgery is paramount in order to protect patients and staff from undetected infections. This study aimed to determine which preoperative COVID-19 screening tool was the most effective strategy before thoracic surgery. Methods. This retrospective cohort multicenter study was performed at 3 Italian thoracic surgery centers. All adult patients scheduled for thoracic surgery procedures from 4th March until 24th April, 2020, and submitted to COVID-19 preoperative screenings were included. The primary outcome was the yield of screening of the different strategies. Results. A total of 430 screenings were performed on 275 patients; 275 anamnestic questionnaires were administered. 77 patients were screened by an anamnestic questionnaire and reverse transcriptase polymerase chain reaction (RT-PCR). 78 patients were selected to combine screening with anamnestic questionnaire and chest computed tomography (CT). The positive yield of screening using a combination of anamnestic questionnaire and RT-PCR was 7.8% (95% CI: 2.6-14.3), while using a combination of anamnestic questionnaire and chest CT was 3.8% (95% CI: 0-9). Individual yields were 1.1% (95% CI: 0-2.5) for anamnestic questionnaire, 5.2% (95% CI: 1.3-11.7) for RT-PCR, and 3.8% (95% CI: 0-9). Conclusions. The association of anamnestic questionnaire and RT-PCR is able to detect around 8 positives in 100 asymptomatic patients. This combined strategy could be a valuable preoperative SARS-CoV-2 screening tool before thoracic surgery

    School in Italy: a safe place for children and adolescents

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    Background: During the first SARS-CoV-2 pandemic phase, the sudden closure of schools was one of the main measures to minimize the spread of the virus. In the second phase, several safety procedures were implemented to avoid school closure. To evaluate if the school is a safe place, students and staff of two school complexes of Rome were monitored to evaluate the efficacy of prevention measures inside the school buildings. Methods: Oral secretions specimens were collected from 1262 subjects for a total of 3431 samples, collected over a 3 months period. Detection of Coronavirus SARS-CoV-2 was performed by real-time PCR. Target genes were represented by E gene, RdRP/S gene and N gene. Results: Among the 3431 samples analyzed, just 16 sample resulted as positive or low positive: 1 sample in the first month, 12 samples in the second month and 3 in the third month. In each period of evaluation, all positive children attended different classes. Conclusions: Even if the school has the potential for spreading viruses, our preliminary results show the efficacy of the implementations undertaken in this setting to minimize virus diffusion. Our evidence suggests that school does not act as an amplifier for transmission of SARS-CoV-2 and can be really considered a safe place for students

    Rapid clinical management of leishmaniasis in emergency department: a case report with clinical review of recent literature

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    Systemic or localized lympho-adenomegaly is a common cause of access to the emergency department (ED), and differential diagnosis is often complicated. The combination of anamnesis, physical examination, laboratory tests, and instrumental diagnosis are extremely important to orientate toward a rapid and correct therapy, even if a prompt discrimination of the etiology of this lymphadenomegaly is not often possible. Our aim with this review is to improve the management of a dierential diagnosis between hematological and infective diseases as leishmaniasis in ED and suggest quick diagnostic techniques that might be useful for early identification. Together in the review, we describe a case report of a young man aected from visceral leishmaniasis who presented to our ED and was incorrectly addressed to the wrong ward for the study of his condition. Subsequently, we focus on the clinical presentation of visceral leishmaniasis and compare it to the most common dierential diagnoses that are usually taken into account in the management of such patients

    Ganymede from 2D to 3D: A multidisciplinary approach in preparation for JUICE. Preliminary results

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    The research project: "Ganimede from 2D to 3D: A multidisciplinary approach in preparation for JUICE", was selected in 2019 in the framework of an "INAF Mainstream" call. This work aims to show the potential of a multidisciplinary data analysis approach in anticipation of the JUICE mission.We focus on three instruments carried onboard the ESA JUICE mission, where Italy's National Institute for Astrophysics (INAF) is involved: the optical camera (JANUS), sensitive to the 0.4-1.0 µm spectral region [1], the VIS-NIR imaging spectrometer (MAJIS), operating in the overall 0.5-5.54 µm spectral domain [2], and the radar sounder (RIME), operating at 9 MHz (33.3 m) [3]. This project is important to prepare combined analysis techniques and models that could be applied to a larger number of regions of interest that will be observed by JUICE in the 2030s, when data of the icy Galilean moons will be finally acquired. Here we show regions of interest on Ganymede that are most promising for a multi-sensor data analysis, first of all by combining optical images acquired by the Galileo/SSI framing camera and by the Galileo/NIMS imaging spectrometer with good spatial resolution. Unfortunately, topographic information is currently not available for most of the Ganymede's surface. However, we built a synthetic topographic dataset for the Nippur Sulcus region based on the existing high-resolution optical images, which could be representative of topographic models that will be obtained in the future by means of JUICE data. We process such a synthetic topographic dataset with a self-similar clustering method [e.g., 4] able to model how the fractures are distributed not only on the surface, but also inside the icy crust.In the near future, this synthetic topographic dataset will also be used to apply a code able to simulate radar echoes coming from the radio waves investigation of Ganymede's subsurface, which was successfully tested on Mars by means of the MARSIS radar data [5].Among other things, the study of specific regions of interest on Ganymede is key to drive the planning and prioritization of the observations to be carried out by multiple JUICE instruments, especially during the dedicated Ganymede orbit phase, which will be the final and salient phase of the entire mission. References [1] Della Corte, V., Noci, G., Turella, A., Paolinetti R., et al. (2019). Scientific objectives of JANUS Instrument onboard JUICE mission and key technical solutions for its Optical Head. Proceedings of the 2019 IEEE 5th International Workshop on Metrology for AeroSpace, Turin (Italy), 19-21 June 2019. Doi: 10.1109/MetroAeroSpace.2019.8869584. [2] Piccioni, G., Tommasi, L., Langevin, Y., Filacchione, G., et al. (2019). Scientific goals and technical challenges of the MAJIS imaging spectrometer for the JUICE mission. Proceedings of the 2019 IEEE 5th International Workshop on Metrology for AeroSpace, Turin (Italy), 19-21 June 2019. Doi: 10.1109/MetroAeroSpace.2019.8869566. [3] Bruzzone, L., Croci, R. (2019). Radar for Icy Moon Exploration (RIME). Proceedings of the 2019 IEEE 5th International Workshop on Metrology for AeroSpace, Turin (Italy), 19-21 June 2019. Doi: 10.1109/MetroAeroSpace.2019.8869624. [4] Lucchetti, A., Pozzobon, R., Mazzarini, F., Cremonese, G., Massironi, M. (2017). Brittle ice shell thickness of Enceladus from fracture distribution analysis. Icarus 297, 252-264. Doi: 10.1016/j.icarus.2017.07.009. [5] Orosei, R., Rossi, A. P., Cantini, F., Caprarelli, et al. (2017). Radar sounding of Lucus Planum, Mars, by MARSIS. Journal of Geophysical Research (Planets) 122 (7), 1405-1418. Doi: 10.1002/2016JE005232
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