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12 results on '"Guglielmetti, Massimo"'

1. Mediastinoscopy

Author

Sorino, Claudio, primary, Guglielmetti, Massimo, additional, Calati, Angelo, additional, Maida, Simona, additional, Trevisan, Daniele, additional, and Caronno, Roberto, additional

Published
2017
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3. Testing a new model for the L-band radiation of moist leaf litter

Author

Schwank, Mike, Guglielmetti, Massimo, Matzler, Christian, and Fluhler, Hannes

Subjects
Forest litter -- Properties, Microwaves -- Properties, Radiative transfer -- Evaluation, Soil moisture -- Measurement, Radiation -- Measurement, Radiation -- Methods, Business, Earth sciences, Electronics and electrical industries
Abstract

The crown vegetation of a deciduous forest is known to be semitransparent at low microwave frequencies, and leaf litter covering the forest soil has been recognized to have a significant impact on ground emission. The proposed approach for modeling the L-band radiative transfer through leaf litter consists of an isotropic effective medium approach for the litter permittivities, a coherent radiative transfer model for computing the coherent reflectivities from dielectric depth profiles, and an averaging procedure for computing the reflectivities determining the field-scale brightness temperatures. Evaluations were performed for the case of leaf litter on top of a conducting wire grid (litter-grid formation) and for litter on underlying soil (litter-soil formation). A model sensitivity analysis was performed with respect to parameters characterizing litter thickness variations and boundary roughness. For the litter-soil formation, the model was rather sensitive to local irregularities at the air-to-litter boundary. Modeled microwave signatures reproduced the major features of the measurements performed on a site comprising a litter-grid formation. Under dry conditions, the investigated litter layer was nearly 'invisible.' When the same litter layer was wetted, it acted as an important radiation source to be taken into account for the quantitative remote soil moisture detection of forested areas. Under certain conditions, the simulations revealed an increasing brightness when the litter is wetted prior to tile underlying soil. Further wetting of the litter-soil system then resulted in a decreasing brightness as expected for increased moisture. Such effects are important to know to avoid misleading interpretations of L-band signatures. Index Terms--Leaf litter, microwave radiometry, radiative transfer, soil moisture.

Published
2008

4. Calibration of the L-MEB model over a coniferous and a deciduous forest

Author

Grant, Jennifer P., Saleh-Contell, Kauzar, Wigneron, Jean-Pierre, Guglielmetti, Massimo, Kerr, Yann H., Schwank, Mike, Skou, Niels, and Van de Griend, Adriaan A.

Subjects
Coniferous forests -- Analysis, Deciduous forests -- Analysis, Soil moisture -- Analysis, Business, Earth sciences, Electronics and electrical industries
Abstract

In this paper, the L-band Microwave Emission of the Biosphere (L-MEB) model used in the Soil Moisture and Ocean Salinity (SMOS) Level 2 Soil Moisture algorithm is calibrated using L-band (1.4 GHz) microwave measurements over a coniferous (Pine) and a deciduous (mixed/Beech) forest. This resulted in working values of the main canopy parameters optical depth ([tau]), single scattering albedo ([omega]), and structural parameters tt (H) and tt (V), besides the soil roughness parameters [H.sub.R] and [N.sub.R]. Using these calibrated values in the forward model resulted in a root mean-square error in brightness temperatures from 2.8 to 3.8 K, depending on data set and polarization. Furthermore, the relationship between canopy optical depth and leaf area index is investigated for the deciduous site. Finally, a sensitivity study is conducted for the focus parameters, temperature, soil moisture, and precipitation. The results found in this paper will be integrated in the operational SMOS Level 2 Soil Moisture algorithm and used in future inversions of the L-MEB model, for soil moisture retrievals over heterogeneous, partly forested areas. Index Terms--Forest, L-band, microwave radiometry, soil moisture, Soil Moisture and Ocean Salinity (SMOS).

Published
2008

5. FOSMEX: forest soil moisture experiments with microwave radiometry

Author

Guglielmetti, Massimo, Schwank, Mike, Matzler, Christian, Oberdorster, Christoph, Vanderborght, Jan, and Fluhler, Hannes

Subjects
Soil moisture -- Analysis, Soil moisture -- Observations, Salinity -- Observations, Salinity -- Analysis, Forest soils -- Analysis, Forest soils -- Observations, Business, Earth sciences, Electronics and electrical industries
Abstract

The microwave Forest Soil Moisture Experiment (FOSMEX) was performed at a deciduous forest site at the Research Centre Julich (Germany). An L- and an X-band radiometer were mounted 100 m above ground and directed to the canopy. The measurements consist of dual- and single-polarized L- and X-band data and simultaneously recorded ground moisture, temperature, and meteorological data. The canopy L-band transmissivity was estimated from a subset of the FOSMEX data, where the ground was masked with a metalized foil. For the foliage-free canopy, the reflecting foil diminished the L-band brightness by [approximately or equal to]24 K, whereas brightness increased by [approximatelyor equal to]14 K when the foil was removed from below the foliated canopy. Depending on the assumption made on the scattering albedo of the canopy, the transmissivities were between 0.2 and 0.51. Furthermore, the contribution of the foliage was quantified. Although, the evaluation revealed the semitransparency of the canopy for L-band frequencies, the brightness sensitivity with respect to ground moisture was substantially reduced for all foliation states. The effect of ground surface moisture was explored in an irrigation experiment. The L-band measurements were only affected for a few hours until the water drained through the litter layer. This emphasizes the significance of the presence of litter for soil moisture retrieval from remotely sensed L-band brightness data. The FOSMEX database serves for further testing and improving radiative transfer models used for interpreting microwave data received from future spaceborne L-band radiometers flying over areas comprising a considerable fraction of deciduous forests. Index Terms--Canopy transmissivity, forest, microwave radiometry, radiative transfer, soil moisture.

Published
2008

6. L-band radiometer measurements of soil water under growing clover grass

Author

Schwank, Mike, Matzler, Christian, Guglielmetti, Massimo, and Fluhler, Hannes

Subjects
Remote sensing -- Research, Soil structure -- Research, Radiation -- Measurement, Radiation -- Research, Business, Earth sciences, Electronics and electrical industries
Abstract

A field experiment with an L-band radiometer at 1.4 GHz was performed from May-July 2004 at an experimental site near Zurich, Switzerland. Before the experiment started, clover grass was seeded. Thermal infrared, in situ temperature, and time-domain reflectometer (TDR) measurements were taken simultaneously with hourly radiometer measurements. This setup allowed for investigation of the microwave optical depths and mode opacities (parallel and perpendicular to the soil surface) of the clover grass canopy. Optical depths and opacities were determined by in situ analysis and remotely sensed measurements using a nonscattering radiative transfer model. Due to the canopy structure, optical depth and opacity depend on the polarization and radiometer direction, respectively. A linear relation between vegetation water-mass equivalent and polarization-averaged optical depth was observed. Furthermore, measured and modeled radiative transfer properties of the canopy were compared. The model is based on an effective-medium approach considering the vegetation components as ellipsoidal inclusions. The effect of the canopy structure on the opacities was simulated by assuming an anisotropic orientation of the vegetation components. The observed effect of modified canopy structure due to a hail event was successfully reproduced by the model. It is demonstrated that anisotropic vegetation models should be used to represent the emission properties of vegetation. The sensitivity of radiometer measurements to soil water content was investigated in terms of the fractional contribution of radiation emitted from the soil to total radiation. The fraction of soil-emitted radiation was reduced to approximately 0.3 at the most developed vegetation state. The results presented contribute toward a better understanding of the interaction between L-band radiation and vegetation canopies. Such knowledge is important for evaluating data generated from future satellite measurements. Index Terms--Microwave measurements, microwave radiometry, remote sensing, soil, soil measurements, soil moisture, vegetation.

Published
2005

7. Impact of COVID-19 outbreak on esophageal cancer surgery in Northern Italy: lessons learned from a multicentric snapshot

Author

Rebecchi, Fabrizio, primary, Arolfo, Simone, additional, Ugliono, Elettra, additional, Morino, Mario, additional, Asti, Emanuele, additional, Bonavina, Luigi, additional, Borghi, Felice, additional, Coratti, Andrea, additional, Cossu, Andrea, additional, De Manzoni, Giovanni, additional, De Pascale, Stefano, additional, Ferrari, Giovanni Carlo, additional, Fumagalli Romario, Uberto, additional, Giacopuzzi, Simone, additional, Gualtierotti, Monica, additional, Guglielmetti, Massimo, additional, Merigliano, Stefano, additional, Pallabazzer, Giovanni, additional, Parise, Paolo, additional, Peri, Andrea, additional, Pietrabissa, Andrea, additional, Rosati, Riccardo, additional, Santi, Stefano, additional, Tribuzi, Angela, additional, Valmasoni, Michele, additional, Viganò, Jacopo, additional, and Weindelmayer, Jacopo, additional

Published
2020
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8. Impact of COVID-19 outbreak on esophageal cancer surgery in Northern Italy: lessons learned from a multicentric snapshot.

Author

Rebecchi, Fabrizio, Arolfo, Simone, Ugliono, Elettra, Morino, Mario, Asti, Emanuele, Bonavina, Luigi, Borghi, Felice, Coratti, Andrea, Cossu, Andrea, Manzoni, Giovanni De, Pascale, Stefano De, Ferrari, Giovanni Carlo, Romario, Uberto Fumagalli, Giacopuzzi, Simone, Gualtierotti, Monica, Guglielmetti, Massimo, Merigliano, Stefano, Pallabazzer, Giovanni, Parise, Paolo, and Peri, Andrea

Subjects
COVID-19 pandemic, ESOPHAGEAL cancer, COVID-19, ESOPHAGUS diseases, NEOADJUVANT chemotherapy, ONCOLOGIC surgery
Abstract

Coronavirus Disease-19 (COVID-19) outbreak has significantly burdened healthcare systems worldwide, leading to reorganization of healthcare services and reallocation of resources. The Italian Society for Study of Esophageal Diseases (SISME) conducted a national survey to evaluate changes in esophageal cancer management in a region severely struck by COVID-19 pandemic. A web-based questionnaire (26 items) was sent to 12 SISME units. Short-term outcomes of esophageal resections performed during the lockdown were compared with those achieved in the same period of 2019. Six (50%) centers had significant restrictions in their activity. However, overall number of resections did not decrease compared to 2019, while a higher rate of open esophageal resections was observed (40 vs. 21.7%; P  = 0.034). Surgery was delayed in 24 (36.9%) patients in 6 (50%) centers, mostly due to shortage of anesthesiologists, and occupation of intensive care unit beds from intubated COVID-19 patients. Indications for neoadjuvant chemo (radio) therapy were extended in 14% of patients. Separate COVID-19 hospital pathways were active in 11 (91.7%) units. COVID-19 screening protocols included nasopharyngeal swab in 91.7%, chest computed tomography scan in 8.3% and selective use of lung ultrasound in 75% of units. Postoperative interstitial pneumonia occurred in 1 (1.5%) patient. Recovery from COVID-19 pandemic was characterized by screening of patients in all units, and follow-up outpatient visits in only 33% of units. This survey shows that clinical strategies differed considerably among the 12 SISME centers. Evidence-based guidelines are needed to support the surgical esophageal community and to standardize clinical practice in case of further pandemics. [ABSTRACT FROM AUTHOR]

Published
2021
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9. Parameterisation and calibration of L-MEB in the Level-2 SMOS algorithm

Author

Wigneron, Jean-Pierre, Kerr, Yann H., Saleh Contell, Kauzar, Richaume, Philippe, De Rosnay, Patricia, Escorihuela, Maria-José, Calvet, Jean-Christophe, Cano, Aurelio, Chanzy, Andre, Demontoux, François, Grant, Jennifer, Guglielmetti, Massimo, Ferrazzoli, Paolo, Lawrence, Heather, Lopez-Baeza, Ernesto, Mialon, Arnaud, Pellarin, Thierry, Rüdiger, Christoph, Ruffié, Gilles, Schwank, Mike, Skou, Niels, Waldteufel, Philippe, Berger, Michael, Delwart, Steven, Écologie fonctionnelle et physique de l'environnement (EPHYSE), Institut National de la Recherche Agronomique (INRA), Centre d'études spatiales de la biosphère (CESBIO), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), European Centre for Medium-Range Weather Forecasts (ECMWF), Centre national de recherches météorologiques (CNRM), Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS), Universitat de València (UV), Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes (EMMAH), Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), VU University Amsterdam, Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Università degli Studi di Roma Tor Vergata [Roma], Centre National de la Recherche Scientifique (CNRS), Institute of Terrestrial Ecosystems (ITES), National Space Institute [Lyngby] (DTU Space), Technical University of Denmark [Lyngby] (DTU), Service d'aéronomie (SA), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), European Space Agency (ESA), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Vrije Universiteit Amsterdam [Amsterdam] (VU), Danmarks Tekniske Universitet = Technical University of Denmark (DTU), Agence Spatiale Européenne = European Space Agency (ESA), Groupe d'étude de l'atmosphère météorologique (CNRM-GAME), Faculty of Earth and Life Sciences, Department of Computer Science [ETH Zürich] (D-INFK), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich), Université de Valence, University of Valencia, Laboratoire d'étude des transferts en hydrologie et environnement (LTHE), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Allergy Unit - Department of Dermatology, University of Zürich [Zürich] (UZH), Institut Pierre-Simon-Laplace (IPSL), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), European Space Research and Technology Centre (ESTEC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Écologie fonctionnelle et physique de l'environnement (EPHYSE - UR1263), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Ørsted-DTU, École normale supérieure - Paris (ENS Paris)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National d'Études Spatiales [Toulouse] (CNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X), and Vrije universiteit = Free university of Amsterdam [Amsterdam] (VU)

Subjects
analyse de données, télédétection, MISSION SMOS, Signal and Image processing, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, Electromagnétisme, [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism, Electromagnetism, Traitement du signal et de l'image, humidité du sol, SMOS-Soil moisture-LMEB algorithm, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, ComputingMilieux_MISCELLANEOUS, modélisation
Abstract

International audience; ESA's Soil Moisture and Ocean Salinity (SMOS) mission is currently under preparation with a launch early 2008. When operational, it will provide global microwave brightness temperature observations at L-band, in dual polarisation and under a range of viewing angles, both, over land and water surfaces. For the purpose of relating the observed quantities to soil moisture, the L-band Microwave Emission of the Biosphere (L-MEB) model has been developed, specifically for its use for L-band emission over land surfaces. The core of L-MEB is the t-w approach which takes into account vegetation cover effects on the soil moisture signal. The final version of L-MEB is the result of an exhaustive review of "state of the art" modeling approaches in the field of passive microwaves, with the objective of being accurate while remaining simple enough for operational use at global scale. L-MEB is the forward model used in the SMOS level 2 processor, in order to produce geophysical products, e.g. soil moisture (SM) and vegetation characteristics. The principle of the algorithm is based on an iterative approach, minimizing a cost function computed from the sum of squared weighted differences between measured and modelled brightness temperature (TB) data, for a variety of incidence angles. The retrievals provide the best suited parameters driving the direct TB model that minimize the cost function. In the algorithm process, for each incidence angle, the different cover types (vegetated area, open water, urban area, land use, etc.) present within the SMOS footprint are estimated from high resolution land use maps. For low vegetation and forest categories, these maps allow to distinguish between a large number of sub-categories (N > 200) corresponding to grasslands, crops, scrubs, tropical & boreal forests, etc. for a variety of climatic and geographic conditions. Based on these refined vegetation classes, corresponding to specific vegetation structure, and on maps of soil properties (for soil texture, roughness and bulk density) parameters driving the L-MEB have to be selected and tabulated. Tests and evaluations of the L-MEB model have been made using experimental data sets, based on airborne measurements (COSMOS / NAFE campaign in Australia (Saleh et al., this issue) and CAROLS in France) and ground-based measurements (SMOSREX over soils and fallow, BRAY '04 and FOSMEX over forests, REBEX over corn, MELBEX I and II over matorral and vineyards in the Mediterranean environment of Valencia (Cano et al., this issue), etc.) This paper will make a synthesis of the calibration of L-MEB obtained during the evaluation of the Level-2 algorithm over these different data sets.

Published
2008

10. Remote sensing of temporally varying forest soil properties using microwave radiometry

Author

Guglielmetti, Massimo

Subjects
BODENFEUCHTIGKEIT (BODENKUNDE), BODENVERMESSUNG, BODENKARTIERUNG UND LANDKLASSIFIZIERUNG (PEDOLOGIE), MIKROWELLEN, MW, 30 MHZ BIS 3 THZ (ELEKTROTECHNIK), SOIL SURVEYING + LAND SURVEYING (PEDOLOGY), MICROWAVES, MW, 30 MHZ TO 3 THZ (ELECTRICAL ENGINEERING), FOREST SOILS (FORESTRY), SOIL MOISTURE (PEDOLOGY), RADIOMETRIC ANALYSIS (ANALYTICAL CHEMISTRY), Agriculture, WALDBÖDEN (FORSTWIRTSCHAFT), RADIOMETRISCHE ANALYSE (ANALYTISCHE CHEMIE)
Published
2007
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11. Recent studies about forest emission at L band, in view of SMOS

Author

Della Vecchia, E., Ferrazzoli, P., Guerriero, L., Wigneron, Jean-Pierre, Grant, J.P., Guglielmetti, Massimo, Schwank, Mike, Università degli Studi di Roma Tor Vergata [Roma], Écologie fonctionnelle et physique de l'environnement (EPHYSE), Institut National de la Recherche Agronomique (INRA), VU University Amsterdam, Institute of Terrestrial Ecology, Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), and Vrije universiteit = Free university of Amsterdam [Amsterdam] (VU)

Subjects
arbre forestier, couvert végétal, télédétection, [SDV]Life Sciences [q-bio], MISSION SMOS, [SDE]Environmental Sciences, humidité du sol, radiomètre, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2006

12. Impact of COVID-19 outbreak on esophageal cancer surgery in Northern Italy: lessons learned from a multicentric snapshot

Author

Monica Gualtierotti, Riccardo Rosati, Luigi Bonavina, Michele Valmasoni, Stefano Santi, Andrea Peri, Andrea Pietrabissa, Stefano De Pascale, Mario Morino, Emanuele Asti, Andrea Coratti, J. Viganò, Fabrizio Rebecchi, Angela Tribuzi, Simone Giacopuzzi, Giovanni Ferrari, Felice Borghi, Jacopo Weindelmayer, Stefano Merigliano, Massimo Guglielmetti, Andrea Cossu, Uberto Fumagalli Romario, Giovanni de Manzoni, Simone Arolfo, Paolo Parise, Giovanni Pallabazzer, Elettra Ugliono, Rebecchi, Fabrizio, Arolfo, Simone, Ugliono, Elettra, Morino, Mario, Asti, Emanuele, Bonavina, Luigi, Borghi, Felice, Coratti, Andrea, Cossu, Andrea, De Manzoni, Giovanni, De Pascale, Stefano, Ferrari, Giovanni Carlo, Fumagalli Romario, Uberto, Giacopuzzi, Simone, Gualtierotti, Monica, Guglielmetti, Massimo, Merigliano, Stefano, Pallabazzer, Giovanni, Parise, Paolo, Peri, Andrea, Pietrabissa, Andrea, Rosati, Riccardo, Santi, Stefano, Tribuzi, Angela, Valmasoni, Michele, Viganò, Jacopo, and Weindelmayer, Jacopo

Subjects
medicine.medical_specialty, Coronavirus disease 2019 (COVID-19), Esophageal Neoplasms, law.invention, Disease Outbreaks, surgery, 03 medical and health sciences, 0302 clinical medicine, law, Health care, Pandemic, medicine, Humans, survey, esophageal cancer, COVID-19, management, Pandemics, Digestive System Surgical Procedures, AcademicSubjects/MED00260, Surgeons, business.industry, Esophageal disease, SARS-CoV-2, Gastroenterology, Outbreak, General Medicine, Esophageal cancer, medicine.disease, Intensive care unit, Northern italy, Surgery, Italy, 030220 oncology & carcinogenesis, Communicable Disease Control, 030211 gastroenterology & hepatology, Original Article, business
Abstract

Coronavirus Disease-19 (COVID-19) outbreak has significantly burdened healthcare systems worldwide, leading to reorganization of healthcare services and reallocation of resources. The Italian Society for Study of Esophageal Diseases (SISME) conducted a national survey to evaluate changes in esophageal cancer management in a region severely struck by COVID-19 pandemic. A web-based questionnaire (26 items) was sent to 12 SISME units. Short-term outcomes of esophageal resections performed during the lockdown were compared with those achieved in the same period of 2019. Six (50%) centers had significant restrictions in their activity. However, overall number of resections did not decrease compared to 2019, while a higher rate of open esophageal resections was observed (40 vs. 21.7%; P = 0.034). Surgery was delayed in 24 (36.9%) patients in 6 (50%) centers, mostly due to shortage of anesthesiologists, and occupation of intensive care unit beds from intubated COVID-19 patients. Indications for neoadjuvant chemo (radio) therapy were extended in 14% of patients. Separate COVID-19 hospital pathways were active in 11 (91.7%) units. COVID-19 screening protocols included nasopharyngeal swab in 91.7%, chest computed tomography scan in 8.3% and selective use of lung ultrasound in 75% of units. Postoperative interstitial pneumonia occurred in 1 (1.5%) patient. Recovery from COVID-19 pandemic was characterized by screening of patients in all units, and follow-up outpatient visits in only 33% of units. This survey shows that clinical strategies differed considerably among the 12 SISME centers. Evidence-based guidelines are needed to support the surgical esophageal community and to standardize clinical practice in case of further pandemics.

Published
2020

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