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1. The Diverse Meteorology of Jezero Crater over the First 250 Sols of Perseverance on Mars

Author

Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo, Ministerio de Economía y Competitividad (MINECO). España, Ministerio de Ciencia, Innovación y Universidades (MICINN). España, Ministerio de Ciencia e Innovación (MICIN). España, Spanish State Research Agency (AEI), Gobierno Vasco, European Research Council (ERC), National Aeronautics and Space Administration, Rodríguez Manfredi, J. A., Torre Juárez, M. de la, Sánchez Lavega, A., Hueso, R., Martínez, G., Lemmon, M. T., Newman, C. E., Munguira, A., Hieta, M., Tamppari, L. K., Espejo Meana, Servando Carlos, Zurita, S., Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo, Ministerio de Economía y Competitividad (MINECO). España, Ministerio de Ciencia, Innovación y Universidades (MICINN). España, Ministerio de Ciencia e Innovación (MICIN). España, Spanish State Research Agency (AEI), Gobierno Vasco, European Research Council (ERC), National Aeronautics and Space Administration, Rodríguez Manfredi, J. A., Torre Juárez, M. de la, Sánchez Lavega, A., Hueso, R., Martínez, G., Lemmon, M. T., Newman, C. E., Munguira, A., Hieta, M., Tamppari, L. K., Espejo Meana, Servando Carlos, and Zurita, S.

Abstract

NASA’s Perseverance rover’s Mars Environmental Dynamics Analyzer is collecting data at Jezero crater, characterizing the physical processes in the lowest layer of the Martian atmosphere. Here we present measurements from the instrument’s first 250 sols of operation, revealing a spatially and temporally variable meteorology at Jezero. We find that temperature measurements at four heights capture the response of the atmospheric surface layer to multiple phenomena. We observe the transition from a stable night-time thermal inversion to a daytime, highly turbulent convective regime, with large vertical thermal gradients. Measurement of multiple daily optical depths suggests aerosol concentrations are higher in the morning than in the afternoon. Measured wind patterns are driven mainly by local topography, with a small contribution from regional winds. Daily and seasonal variability of relative humidity shows a complex hydrologic cycle. These observations suggest that changes in some local surface properties, such as surface albedo and thermal inertia, play an influential role. On a larger scale, surface pressure measurements show typical signatures of gravity waves and baroclinic eddies in a part of the seasonal cycle previously characterized as low wave activity. These observations, both combined and simultaneous, unveil the diversity of processes driving change on today’s Martian surface at Jezero crater.

Published
2023

2. The diverse meteorology of Jezero crater over the first 250 sols of Perseverance on Mars

Author

Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Ciencia e Innovación (España), Instituto Nacional de Técnica Aeroespacial (España), European Commission, National Aeronautics and Space Administration (US), NASA Jet Propulsion Laboratory, California Institute of Technology, Rodriguez-Manfredi, J. A. [0000-0003-0461-9815], Torre Juarez, Manuel de la [0000-0003-1393-5297], Sánchez-Lavega, A. [0000-0001-7234-7634], Hueso, R. [0000-0003-0169-123X], Martinez, G. [0000-0001-5885-236X], Lemmon, M. T. [0000-0002-4504-5136], Newman, C. E. [0000-0001-9990-8817], Munguira, A. [0000-0002-1677-6327], Jaakonaho, I. [0000-0001-7343-5556], Viudez-Moreiras, D. [0000-0001-8442-3788], Ramos, M. Ángeles [0000-0003-3648-6818], Saiz-Lopez, A. [0000-0002-0060-1581], Lepinette, A. [0000-0002-5213-3521], Sullivan, R. J. [0000-0003-4191-598X], Apestigue, V. [0000-0002-4349-8019], Río Gaztelurrutia, Teresa del [0000-0001-8552-226X], Murdoch, N. [0000-0002-9701-4075], Arruego, I. [0000-0001-9705-9743], Banfield, D. [0000-0003-2664-0164], Brown, A. J. [0000-0002-9352-6989], Ceballos, J. [0000-0002-6727-1062], Dominguez-Pumar, M. [0000-0001-5439-7953], Espejo, S. [0000-0003-2609-2663], Fischer, E. [0000-0002-2098-5295], Guzewich, S. D. [0000-0003-1149-7385], Makinen, T. [0000-0001-9489-8154], Martin, C. [0000-0002-8898-4061], Molina, A. [0000-0002-5038-2022], Mora-Sotomayor, L. [0000-0002-8209-1190], Navarro, S. [0000-0001-8606-7799], Perez-Grande, I. [0000-0002-7145-2835], Romero, C. [0000-0001-5442-2581], Rodríguez-Manfredi, José Antonio, Torre Juarez, Manuel de la, Sánchez-Lavega, A., Hueso, R., Martínez, G., Lemmon, M. T., Newman, C. E., Munguira, A., Hieta, M., Tamppari, L. K., Polkko, J., Toledo, D., Sebastian, E., Smith, M. D., Jaakonaho, I., Genzer, M., Vicente-Retortillo, A. de, Viúdez-Moreiras, Daniel, Ramos, M. Ángeles, Saiz-Lopez, A., Lepinette, A., Wolff, M., Sullivan, R. J., Gómez-Elvira, Javier, Apestigue, V., Conrad, P. G., Río Gaztelurrutia, Teresa del, Murdoch, N., Arruego, I., Banfield, D., Boland, J., Brown, A. J., Ceballos, J., Dominguez-Pumar, M., Espejo, S., Fairén, A. G., Ferrandiz, R., Fischer, E., García-Villadangos, Miriam, Gimenez, S., Gomez-Gomez, F., Guzewich, S. D., Harri, A. M., Jimenez, J. J., Jimenez, V., Makinen, T., Marin, M., Martín, C., Martin-Soler, J., Molina, A., Mora-Sotomayor, L., Navarro, S., Peinado, V., Pérez-Grande, I., Pla-Garcia, J., Postigo, M., Prieto-Ballesteros, Olga, Rafkin, Scot C. R., Richardson, M. I., Romeral, J., Romero, C., Savijärvi, H., Schofield, J. T., Torres, J., Urqui, R., Zurita, S., Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Ciencia e Innovación (España), Instituto Nacional de Técnica Aeroespacial (España), European Commission, National Aeronautics and Space Administration (US), NASA Jet Propulsion Laboratory, California Institute of Technology, Rodriguez-Manfredi, J. A. [0000-0003-0461-9815], Torre Juarez, Manuel de la [0000-0003-1393-5297], Sánchez-Lavega, A. [0000-0001-7234-7634], Hueso, R. [0000-0003-0169-123X], Martinez, G. [0000-0001-5885-236X], Lemmon, M. T. [0000-0002-4504-5136], Newman, C. E. [0000-0001-9990-8817], Munguira, A. [0000-0002-1677-6327], Jaakonaho, I. [0000-0001-7343-5556], Viudez-Moreiras, D. [0000-0001-8442-3788], Ramos, M. Ángeles [0000-0003-3648-6818], Saiz-Lopez, A. [0000-0002-0060-1581], Lepinette, A. [0000-0002-5213-3521], Sullivan, R. J. [0000-0003-4191-598X], Apestigue, V. [0000-0002-4349-8019], Río Gaztelurrutia, Teresa del [0000-0001-8552-226X], Murdoch, N. [0000-0002-9701-4075], Arruego, I. [0000-0001-9705-9743], Banfield, D. [0000-0003-2664-0164], Brown, A. J. [0000-0002-9352-6989], Ceballos, J. [0000-0002-6727-1062], Dominguez-Pumar, M. [0000-0001-5439-7953], Espejo, S. [0000-0003-2609-2663], Fischer, E. [0000-0002-2098-5295], Guzewich, S. D. [0000-0003-1149-7385], Makinen, T. [0000-0001-9489-8154], Martin, C. [0000-0002-8898-4061], Molina, A. [0000-0002-5038-2022], Mora-Sotomayor, L. [0000-0002-8209-1190], Navarro, S. [0000-0001-8606-7799], Perez-Grande, I. [0000-0002-7145-2835], Romero, C. [0000-0001-5442-2581], Rodríguez-Manfredi, José Antonio, Torre Juarez, Manuel de la, Sánchez-Lavega, A., Hueso, R., Martínez, G., Lemmon, M. T., Newman, C. E., Munguira, A., Hieta, M., Tamppari, L. K., Polkko, J., Toledo, D., Sebastian, E., Smith, M. D., Jaakonaho, I., Genzer, M., Vicente-Retortillo, A. de, Viúdez-Moreiras, Daniel, Ramos, M. Ángeles, Saiz-Lopez, A., Lepinette, A., Wolff, M., Sullivan, R. J., Gómez-Elvira, Javier, Apestigue, V., Conrad, P. G., Río Gaztelurrutia, Teresa del, Murdoch, N., Arruego, I., Banfield, D., Boland, J., Brown, A. J., Ceballos, J., Dominguez-Pumar, M., Espejo, S., Fairén, A. G., Ferrandiz, R., Fischer, E., García-Villadangos, Miriam, Gimenez, S., Gomez-Gomez, F., Guzewich, S. D., Harri, A. M., Jimenez, J. J., Jimenez, V., Makinen, T., Marin, M., Martín, C., Martin-Soler, J., Molina, A., Mora-Sotomayor, L., Navarro, S., Peinado, V., Pérez-Grande, I., Pla-Garcia, J., Postigo, M., Prieto-Ballesteros, Olga, Rafkin, Scot C. R., Richardson, M. I., Romeral, J., Romero, C., Savijärvi, H., Schofield, J. T., Torres, J., Urqui, R., and Zurita, S.

Abstract

NASA’s Perseverance rover’s Mars Environmental Dynamics Analyzer is collecting data at Jezero crater, characterizing the physical processes in the lowest layer of the Martian atmosphere. Here we present measurements from the instrument’s first 250 sols of operation, revealing a spatially and temporally variable meteorology at Jezero. We find that temperature measurements at four heights capture the response of the atmospheric surface layer to multiple phenomena. We observe the transition from a stable night-time thermal inversion to a daytime, highly turbulent convective regime, with large vertical thermal gradients. Measurement of multiple daily optical depths suggests aerosol concentrations are higher in the morning than in the afternoon. Measured wind patterns are driven mainly by local topography, with a small contribution from regional winds. Daily and seasonal variability of relative humidity shows a complex hydrologic cycle. These observations suggest that changes in some local surface properties, such as surface albedo and thermal inertia, play an influential role. On a larger scale, surface pressure measurements show typical signatures of gravity waves and baroclinic eddies in a part of the seasonal cycle previously characterized as low wave activity. These observations, both combined and simultaneous, unveil the diversity of processes driving change on today’s Martian surface at Jezero crater.

Published
2023

3. The Mars Environmental Dynamics Analyzer, MEDA. A Suite of Environmental Sensors for the Mars 2020 Mission

Author

Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Instituto Nacional de Técnica Aeroespacial (España), Centro para el Desarrollo Tecnológico Industrial (España), Eusko Jaurlaritza, European Research Council, Rodríguez Manfredi, José Antonio, Torre Juárez, M. de la, Alonso, A., Apéstigue, V., Arruego, I., Atienza, T., Banfield, D., Boland, J., Carrera, M. A., Castañer, L., Ceballos-Cáceres, J., Chen-Chen, H, Cobos, A., Conrad, P.G., Cordoba, E., Río Gaztelurrutia, Teresa del, de Vicente Retortillo, A., Domínguez-Pumar, M., Díaz-Espejo, Antonio, González Fairén, Alberto, Fernández-Palma, A., Ferrándiz, Ricardo, Ferri, F., Fischer, E., García-Manchado, A., García-Villadangos, Miriam, Genzer, M., Giménez, S., Gómez-Elvira, Javier, Gómez, Felipe, Guzewich, Scott D., Harri, A-M, Hernández, C.D., Hieta, M., Hueso, R., Jaakonaho, I., Jiménez, J. J., Jiménez, V., Larman, A., Leiter, R., Lepinette, Alain, Lemmon, M.T., López, G, Madsen, S.N., Mäkinen, T., Marín, M., Martín Soler, Javier, Martínez, G., Molina-Jurado, Antonio, Mora Sotomayor, Luis, Moreno-Álvarez, J. F., Navarro, Sara, Newman, C E, Ortega, C., Parrondo, M.C., Peinado, Verónica, Peña, A., Pérez-Grande, I., Pérez-Hoyos, S., Pla-García, Jorge, Polkko, J., Postigo Cacho, Marina, Prieto-Ballesteros, Olga, Rafkin, Scot C. R., Ramos, M. Ángeles, Richardson, M. I., Romeral Planelló, Julio J., Romero, C, Runyon, K D, Saiz-Lopez, A., Sánchez-Lavega, A., Sard, I., Schofield, J. T., Sebastián-Martínez, Eduardo, Smith, M D, Sullivan, R J, Tamppari, L K, Thompson, A D, Toledo, D, Torrero, F, Torres-Redondo, Josefina, Urquí, R., Velasco, T., Viúdez-Moreiras, Daniel, Zurita, S., Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Instituto Nacional de Técnica Aeroespacial (España), Centro para el Desarrollo Tecnológico Industrial (España), Eusko Jaurlaritza, European Research Council, Rodríguez Manfredi, José Antonio, Torre Juárez, M. de la, Alonso, A., Apéstigue, V., Arruego, I., Atienza, T., Banfield, D., Boland, J., Carrera, M. A., Castañer, L., Ceballos-Cáceres, J., Chen-Chen, H, Cobos, A., Conrad, P.G., Cordoba, E., Río Gaztelurrutia, Teresa del, de Vicente Retortillo, A., Domínguez-Pumar, M., Díaz-Espejo, Antonio, González Fairén, Alberto, Fernández-Palma, A., Ferrándiz, Ricardo, Ferri, F., Fischer, E., García-Manchado, A., García-Villadangos, Miriam, Genzer, M., Giménez, S., Gómez-Elvira, Javier, Gómez, Felipe, Guzewich, Scott D., Harri, A-M, Hernández, C.D., Hieta, M., Hueso, R., Jaakonaho, I., Jiménez, J. J., Jiménez, V., Larman, A., Leiter, R., Lepinette, Alain, Lemmon, M.T., López, G, Madsen, S.N., Mäkinen, T., Marín, M., Martín Soler, Javier, Martínez, G., Molina-Jurado, Antonio, Mora Sotomayor, Luis, Moreno-Álvarez, J. F., Navarro, Sara, Newman, C E, Ortega, C., Parrondo, M.C., Peinado, Verónica, Peña, A., Pérez-Grande, I., Pérez-Hoyos, S., Pla-García, Jorge, Polkko, J., Postigo Cacho, Marina, Prieto-Ballesteros, Olga, Rafkin, Scot C. R., Ramos, M. Ángeles, Richardson, M. I., Romeral Planelló, Julio J., Romero, C, Runyon, K D, Saiz-Lopez, A., Sánchez-Lavega, A., Sard, I., Schofield, J. T., Sebastián-Martínez, Eduardo, Smith, M D, Sullivan, R J, Tamppari, L K, Thompson, A D, Toledo, D, Torrero, F, Torres-Redondo, Josefina, Urquí, R., Velasco, T., Viúdez-Moreiras, Daniel, and Zurita, S.

Abstract

NASA's Mars 2020 (M2020) rover mission includes a suite of sensors to monitor current environmental conditions near the surface of Mars and to constrain bulk aerosol properties from changes in atmospheric radiation at the surface. The Mars Environmental Dynamics Analyzer (MEDA) consists of a set of meteorological sensors including wind sensor, a barometer, a relative humidity sensor, a set of 5 thermocouples to measure atmospheric temperature at ∼1.5 m and ∼0.5 m above the surface, a set of thermopiles to characterize the thermal IR brightness temperatures of the surface and the lower atmosphere. MEDA adds a radiation and dust sensor to monitor the optical atmospheric properties that can be used to infer bulk aerosol physical properties such as particle size distribution, non-sphericity, and concentration. The MEDA package and its scientific purpose are described in this document as well as how it responded to the calibration tests and how it helps prepare for the human exploration of Mars. A comparison is also presented to previous environmental monitoring payloads landed on Mars on the Viking, Pathfinder, Phoenix, MSL, and InSight spacecraft.

Published
2021

4. The Mars Environmental Dynamics Analyzer, MEDA. A Suite of Environmental Sensors for the Mars 2020 Mission

Author

Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Instituto Nacional de Técnica Aeroespacial (España), Eusko Jaurlaritza, National Aeronautics and Space Administration (US), Rodríguez-Manfredi, José Antonio, Torre Juárez, Manuel de la, Alonso, A., Apéstigue, V., Arruego, I., Atienza, T., Banfield, D., Boland, J., Carrera, M. A., Castañer, L., Ceballos-Cáceres, J., Chen-Chen, H., Cobos, A., Conrad, P.G., Cordoba, E., Río Gaztelurrutia, Teresa del, Vicente-Retortillo, A. de, Domínguez-Pumar, M., Espejo, S., Gómez-Elvira, Javier, Gómez, F., Fairen, A.G., Fernández-Palma, A., Ferrándiz, R., Ferri, F., Fischer, E., García-Manchado, A., García-Villadangos, Miriam, Genzer, M., Giménez, S., Guzewich, Scott D., Harri, A.M., Hernández, C.D., Hieta, M., Hueso, R., Jaakonaho, I., Jiménez, J.J., Jiménez, V., Larman, A., Leiter, R., Lepinette, A., Lemmon, M.T., López, G., Madsen, S.N., Mäkinen, T., Marín, M., Martín-Soler, J., Martínez, G., Molina, A., Mora-Sotomayor, L., Moreno-Álvarez, J.F., Navarro, S., Ortega, C., Parrondo, M.C., Peinado, V., Peña, A., Pérez-Grande, I., Pérez-Hoyos, S., Pla-García, J., Postigo, M., Prieto-Ballesteros, Olga, Ramos, M., Romeral, J., Romero, C., Saiz-Lopez, A., Sánchez-Lavega, A., Sard, I., Sebastian, E., Toledo, D., Torrero, F., Torres, J., Urquí, R., Velasco, T., Viúdez-Moreiras, Daniel, Zurita, S., Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Instituto Nacional de Técnica Aeroespacial (España), Eusko Jaurlaritza, National Aeronautics and Space Administration (US), Rodríguez-Manfredi, José Antonio, Torre Juárez, Manuel de la, Alonso, A., Apéstigue, V., Arruego, I., Atienza, T., Banfield, D., Boland, J., Carrera, M. A., Castañer, L., Ceballos-Cáceres, J., Chen-Chen, H., Cobos, A., Conrad, P.G., Cordoba, E., Río Gaztelurrutia, Teresa del, Vicente-Retortillo, A. de, Domínguez-Pumar, M., Espejo, S., Gómez-Elvira, Javier, Gómez, F., Fairen, A.G., Fernández-Palma, A., Ferrándiz, R., Ferri, F., Fischer, E., García-Manchado, A., García-Villadangos, Miriam, Genzer, M., Giménez, S., Guzewich, Scott D., Harri, A.M., Hernández, C.D., Hieta, M., Hueso, R., Jaakonaho, I., Jiménez, J.J., Jiménez, V., Larman, A., Leiter, R., Lepinette, A., Lemmon, M.T., López, G., Madsen, S.N., Mäkinen, T., Marín, M., Martín-Soler, J., Martínez, G., Molina, A., Mora-Sotomayor, L., Moreno-Álvarez, J.F., Navarro, S., Ortega, C., Parrondo, M.C., Peinado, V., Peña, A., Pérez-Grande, I., Pérez-Hoyos, S., Pla-García, J., Postigo, M., Prieto-Ballesteros, Olga, Ramos, M., Romeral, J., Romero, C., Saiz-Lopez, A., Sánchez-Lavega, A., Sard, I., Sebastian, E., Toledo, D., Torrero, F., Torres, J., Urquí, R., Velasco, T., Viúdez-Moreiras, Daniel, and Zurita, S.

Abstract

NASA’s Mars 2020 (M2020) rover mission includes a suite of sensors to monitor current environmental conditions near the surface of Mars and to constrain bulk aerosol properties from changes in atmospheric radiation at the surface. The Mars Environmental Dynamics Analyzer (MEDA) consists of a set of meteorological sensors including wind sensor, a barometer, a relative humidity sensor, a set of 5 thermocouples to measure atmospheric temperature at ∼1.5 m and ∼0.5 m above the surface, a set of thermopiles to characterize the thermal IR brightness temperatures of the surface and the lower atmosphere. MEDA adds a radiation and dust sensor to monitor the optical atmospheric properties that can be used to infer bulk aerosol physical properties such as particle size distribution, non-sphericity, and concentration. The MEDA package and its scientific purpose are described in this document as well as how it responded to the calibration tests and how it helps prepare for the human exploration of Mars. A comparison is also presented to previous environmental monitoring payloads landed on Mars on the Viking, Pathfinder, Phoenix, MSL, and InSight spacecraft.

Published
2021

5. Denoising Atmospheric Temperature Measurements Taken by the Mars Science Laboratory on the Martian Surface

Author

Zurita-Zurita, S., Escribano, Francisco J., Sáez-Landete, J., Rodríguez-Manfredi, J. A., Zurita-Zurita, S., Escribano, Francisco J., Sáez-Landete, J., and Rodríguez-Manfredi, J. A.

Abstract

In the present article we analyze data from two temperature sensors of the Mars Science Laboratory, which has been active in Mars since August 2012. Temperature measurements received from the rover are noisy and must be processed and validated before being delivered to the scientific community. Currently, a simple Moving Average (MA) filter is used to perform signal denoising. The application of this basic method relies on the assumption that the noise is stationary and statistically independent from the underlying structure of the signal, an arguable assumption in this kind of harsh environment. In this paper, we analyze the application of two alternative methods to process the temperature sensor measurements: the Discrete Wavelet Transform (DWT) and the Hilbert-Huang Transform (HHT). We consider two different datasets, one belonging to the current Martian measurement campaigns, and the other to the Thermal Vacuum Tests. The processing of these datasets allows to separate the random noise from the interference created by other systems. The experiments show that the MA filter may provide useful results under given circumstances. However, the proposed methods allow a better fitting for all the realistic scenarios, while providing the possibility to identify and analyze other interesting signal features and artifacts that could be later studied and classified. The large amount of data to be processed makes computational efficiency an important requirement in this mission. Considering the computational cost and the filtering performance, we propose the method based on DWT as more suitable for this application., Comment: 10 pages, 7 figures, accepted for publication at IEEE Transactions on Instrumentation and Measurement

Published
2020
Full Text
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6. Denoising Atmospheric Temperature Measurements Taken by the Mars Science Laboratory on the Martian Surface

Author

Zurita-Zurita, S., Escribano, Francisco J., Sáez-Landete, J., Rodríguez-Manfredi, J. A., Zurita-Zurita, S., Escribano, Francisco J., Sáez-Landete, J., and Rodríguez-Manfredi, J. A.

Abstract

In the present article we analyze data from two temperature sensors of the Mars Science Laboratory, which has been active in Mars since August 2012. Temperature measurements received from the rover are noisy and must be processed and validated before being delivered to the scientific community. Currently, a simple Moving Average (MA) filter is used to perform signal denoising. The application of this basic method relies on the assumption that the noise is stationary and statistically independent from the underlying structure of the signal, an arguable assumption in this kind of harsh environment. In this paper, we analyze the application of two alternative methods to process the temperature sensor measurements: the Discrete Wavelet Transform (DWT) and the Hilbert-Huang Transform (HHT). We consider two different datasets, one belonging to the current Martian measurement campaigns, and the other to the Thermal Vacuum Tests. The processing of these datasets allows to separate the random noise from the interference created by other systems. The experiments show that the MA filter may provide useful results under given circumstances. However, the proposed methods allow a better fitting for all the realistic scenarios, while providing the possibility to identify and analyze other interesting signal features and artifacts that could be later studied and classified. The large amount of data to be processed makes computational efficiency an important requirement in this mission. Considering the computational cost and the filtering performance, we propose the method based on DWT as more suitable for this application., Comment: 10 pages, 7 figures, accepted for publication at IEEE Transactions on Instrumentation and Measurement

Published
2020
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8. External pancreatic fistula treated by endoscopic ultrasound-guided drainage with a novel lumen-apposing metal stent mounted on a cautery-tipped delivery system

Author

Orellana, F, Attili, F, Andrade Zurita, S, Costamagna, Guido, Larghi, Alberto Leonardo, Costamagna, Guido (ORCID:0000-0002-8100-2731), Larghi, Alberto, Orellana, F, Attili, F, Andrade Zurita, S, Costamagna, Guido, Larghi, Alberto Leonardo, Costamagna, Guido (ORCID:0000-0002-8100-2731), and Larghi, Alberto

Abstract

One of the most common causes of external pancreatic fistula is the iatrogenic manipulation of a complex pancreatic fluid collection concomitantly associated with a disconnected pancreatic duct [1] [2]. This situation can lead to the development of a high output (up to 400 mL/d) external pancreatic fistula that is difficult to manage and sometimes requires surgery [3]. In 2012, a 40-year-old woman underwent laparoscopic cholecystectomy with a hepaticojejunal Roux-en-Y anastomosis for a congenital Todani’s type IV common bile duct cyst. Postoperative pancreatitis resulted in the development of a complex pancreatic fluid collection in the pancreatic head, which was drained percutaneously. Subsequently, an external pancreatic fistula formed with an output of 200 mL/d. In 2014, the patient was referred to us for further evaluation. Endoscopic retrograde cholangiopancreatography (ERCP) showed a normal main pancreatic duct that lacked a clear communication with the collection ([Fig. 1]). The injection of contrast through the percutaneous catheter showed the presence of a 4-cm fluid collection ([Fig. 2]). Endoscopic ultrasound (EUS)-guided drainage with the placement of plastic stents was planned.

Published
2015

9. Accuracy and inter-observer agreement of the ProcoreTM 25 gauge needle for endoscopic ultrasound-guided tissue core biopsy.

Author

Rindi, Guido, Attili, F, Petrone, G., Abdulkader, I, Correale, L, Inzani, Frediano, Iglesias Garcia, J, Hassan, Cesare, Dominguez Muñoz, Je, Costamagna, Guido, Larghi, Alberto Leonardo, Andrade Zurita, S, Rindi, Guido (ORCID:0000-0003-2996-4404), Costamagna, Guido (ORCID:0000-0002-8100-2731), Larghi, Alberto, Rindi, Guido, Attili, F, Petrone, G., Abdulkader, I, Correale, L, Inzani, Frediano, Iglesias Garcia, J, Hassan, Cesare, Dominguez Muñoz, Je, Costamagna, Guido, Larghi, Alberto Leonardo, Andrade Zurita, S, Rindi, Guido (ORCID:0000-0003-2996-4404), Costamagna, Guido (ORCID:0000-0002-8100-2731), and Larghi, Alberto

Abstract

Accuracy and inter-observer agreement of the ProcoreTM 25 gauge needle for endoscopic ultrasound-guided tissue core biopsy.

Published
2015

10. Zapoteco de Santa Catarina Quioquitani

Author

Marlett, Stephen A., Ward, Michael, Zurita S., Emiliano, Marlett, Stephen A., Ward, Michael, and Zurita S., Emiliano

Abstract

http://www.sil.org/resources/archives/2090

Published
2008

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